[Qemu-devel] [RFC PATCH 00/26] replay additions

[Qemu-devel] [RFC PATCH 00/26] replay additions

[Pavel Dovgalyuk]

Accidentally sent draft version of patches to the mailing list.
Please consider this one as the correct one.

This set of patches includex fixes from Alex Bennée for fixing
BQL and replay locks after inventing the MTTCG. It also includes some
additional replay patches that makes this set of fixes working.
It is also fixes some vmstate creation (and loading) issues
in record/replay modes:
 - VM start/stop fixes in replay mode
 - overlay creation for blkreplay filter
 - fixes for vmstate save/load in record/replay mode
 - fixes for host clock vmstate
 - fixes for icount timers vmstate

There is also a set of helper scripts written by Alex Bennée
for debugging the record/replay code.

---

Alex Bennée (12):
      target/arm/arm-powertctl: drop BQL assertions
      cpus: push BQL lock to qemu_*_wait_io_event
      cpus: only take BQL for sleeping threads
      replay/replay.c: bump REPLAY_VERSION again
      replay/replay-internal.c: track holding of replay_lock
      replay: make locking visible outside replay code
      replay: push replay_mutex_lock up the call tree
      scripts/qemu-gdb: add simple tcg lock status helper
      util/qemu-thread-*: add qemu_lock, locked and unlock trace events
      scripts/analyse-locks-simpletrace.py: script to analyse lock times
      scripts/replay-dump.py: replay log dumper
      scripts/qemu-gdb/timers.py: new helper to dump timer state

Pavel Dovgalyuk (14):
      block: implement bdrv_snapshot_goto for blkreplay
      blkreplay: create temporary overlay for underlaying devices
      replay: disable default snapshot for record/replay
      replay: fix processing async events
      replay: fixed replay_enable_events
      replay: fix save/load vm for non-empty queue
      replay: added replay log format description
      replay: make safe vmstop at record/replay
      replay: save prior value of the host clock
      icount: fixed saving/restoring of icount warp timers
      cpu-exec: don't overwrite exception_index
      cpu-exec: reset exit flag before calling cpu_exec_nocache
      replay: don't destroy mutex at exit
      replay: check return values of fwrite


 accel/kvm/kvm-all.c                  |    4 
 accel/tcg/cpu-exec.c                 |    5 -
 block/blkreplay.c                    |   73 ++++++++
 cpus-common.c                        |   13 +
 cpus.c                               |  149 +++++++++++++---
 docs/replay.txt                      |   88 ++++++++++
 include/qemu/thread.h                |   14 +-
 include/qemu/timer.h                 |   14 ++
 include/sysemu/replay.h              |   19 ++
 migration/savevm.c                   |   13 +
 replay/replay-char.c                 |   21 +-
 replay/replay-events.c               |   30 +--
 replay/replay-internal.c             |   26 +++
 replay/replay-internal.h             |    9 +
 replay/replay-snapshot.c             |    9 +
 replay/replay-time.c                 |   10 +
 replay/replay.c                      |   43 ++---
 scripts/analyse-locks-simpletrace.py |   99 +++++++++++
 scripts/qemu-gdb.py                  |    4 
 scripts/qemugdb/tcg.py               |   46 +++++
 scripts/qemugdb/timers.py            |   54 ++++++
 scripts/replay-dump.py               |  308 ++++++++++++++++++++++++++++++++++
 stubs/replay.c                       |   16 ++
 target/arm/arm-powerctl.c            |    8 -
 target/i386/hax-all.c                |    3 
 util/main-loop.c                     |   23 ++-
 util/qemu-thread-posix.c             |   21 +-
 util/qemu-timer.c                    |   12 +
 util/trace-events                    |    7 -
 vl.c                                 |   12 +
 30 files changed, 1014 insertions(+), 139 deletions(-)
 create mode 100755 scripts/analyse-locks-simpletrace.py
 create mode 100644 scripts/qemugdb/tcg.py
 create mode 100644 scripts/qemugdb/timers.py
 create mode 100755 scripts/replay-dump.py

-- 
Pavel Dovgalyuk

[Qemu-devel] [RFC PATCH 01/26] block: implement bdrv_snapshot_goto for blkreplay

[Pavel Dovgalyuk]

From: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

This patch enables making snapshots with blkreplay used in
block devices.
This function is required to make bdrv_snapshot_goto without
calling .bdrv_open which is not implemented.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 block/blkreplay.c |    8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/block/blkreplay.c b/block/blkreplay.c
index 61e44a1..82a88f8 100755
--- a/block/blkreplay.c
+++ b/block/blkreplay.c
@@ -127,6 +127,12 @@ static int coroutine_fn blkreplay_co_flush(BlockDriverState *bs)
     return ret;
 }
 
+static int blkreplay_snapshot_goto(BlockDriverState *bs,
+                                   const char *snapshot_id)
+{
+    return bdrv_snapshot_goto(bs->file->bs, snapshot_id);
+}
+
 static BlockDriver bdrv_blkreplay = {
     .format_name            = "blkreplay",
     .protocol_name          = "blkreplay",
@@ -143,6 +149,8 @@ static BlockDriver bdrv_blkreplay = {
     .bdrv_co_pwrite_zeroes  = blkreplay_co_pwrite_zeroes,
     .bdrv_co_pdiscard       = blkreplay_co_pdiscard,
     .bdrv_co_flush          = blkreplay_co_flush,
+
+    .bdrv_snapshot_goto     = blkreplay_snapshot_goto,
 };
 
 static void bdrv_blkreplay_init(void)

[Qemu-devel] [RFC PATCH 02/26] blkreplay: create temporary overlay for underlaying devices

[Pavel Dovgalyuk]

From: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

This patch allows using '-snapshot' behavior in record/replay mode.
blkreplay layer creates temporary overlays on top of underlaying
disk images. It is needed, because creating an overlay over blkreplay
breaks the determinism.
This patch creates similar temporary overlay (when it is needed)
under the blkreplay driver. Therefore all block operations are controlled
by blkreplay.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 block/blkreplay.c |   65 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 stubs/replay.c    |    1 +
 vl.c              |    2 +-
 3 files changed, 67 insertions(+), 1 deletion(-)

diff --git a/block/blkreplay.c b/block/blkreplay.c
index 82a88f8..c489d50 100755
--- a/block/blkreplay.c
+++ b/block/blkreplay.c
@@ -14,12 +14,69 @@
 #include "block/block_int.h"
 #include "sysemu/replay.h"
 #include "qapi/error.h"
+#include "qapi/qmp/qstring.h"
 
 typedef struct Request {
     Coroutine *co;
     QEMUBH *bh;
 } Request;
 
+static BlockDriverState *blkreplay_append_snapshot(BlockDriverState *bs,
+                                                   Error **errp)
+{
+    int ret;
+    BlockDriverState *bs_snapshot;
+    int64_t total_size;
+    QemuOpts *opts = NULL;
+    char tmp_filename[PATH_MAX + 1];
+    QDict *snapshot_options = qdict_new();
+
+    /* Prepare options QDict for the overlay file */
+    qdict_put(snapshot_options, "file.driver", qstring_from_str("file"));
+    qdict_put(snapshot_options, "driver", qstring_from_str("qcow2"));
+
+    /* Create temporary file */
+    ret = get_tmp_filename(tmp_filename, PATH_MAX + 1);
+    if (ret < 0) {
+        error_setg_errno(errp, -ret, "Could not get temporary filename");
+        goto out;
+    }
+    qdict_put(snapshot_options, "file.filename",
+              qstring_from_str(tmp_filename));
+
+    /* Get the required size from the image */
+    total_size = bdrv_getlength(bs);
+    if (total_size < 0) {
+        error_setg_errno(errp, -total_size, "Could not get image size");
+        goto out;
+    }
+
+    opts = qemu_opts_create(bdrv_qcow2.create_opts, NULL, 0, &error_abort);
+    qemu_opt_set_number(opts, BLOCK_OPT_SIZE, total_size, &error_abort);
+    ret = bdrv_create(&bdrv_qcow2, tmp_filename, opts, errp);
+    qemu_opts_del(opts);
+    if (ret < 0) {
+        error_prepend(errp, "Could not create temporary overlay '%s': ",
+                      tmp_filename);
+        goto out;
+    }
+
+    bs_snapshot = bdrv_open(NULL, NULL, snapshot_options,
+                            BDRV_O_RDWR | BDRV_O_TEMPORARY, errp);
+    snapshot_options = NULL;
+    if (!bs_snapshot) {
+        goto out;
+    }
+
+    bdrv_append(bs_snapshot, bs, errp);
+
+    return bs_snapshot;
+
+out:
+    QDECREF(snapshot_options);
+    return NULL;
+}
+
 static int blkreplay_open(BlockDriverState *bs, QDict *options, int flags,
                           Error **errp)
 {
@@ -35,6 +92,14 @@ static int blkreplay_open(BlockDriverState *bs, QDict *options, int flags,
         goto fail;
     }
 
+    /* Add temporary snapshot to preserve the image */
+    if (!replay_snapshot
+        && !blkreplay_append_snapshot(bs->file->bs, &local_err)) {
+        ret = -EINVAL;
+        error_propagate(errp, local_err);
+        goto fail;
+    }
+
     ret = 0;
 fail:
     return ret;
diff --git a/stubs/replay.c b/stubs/replay.c
index 9c8aa48..9991ee5 100644
--- a/stubs/replay.c
+++ b/stubs/replay.c
@@ -3,6 +3,7 @@
 #include "sysemu/sysemu.h"
 
 ReplayMode replay_mode;
+char *replay_snapshot;
 
 int64_t replay_save_clock(unsigned int kind, int64_t clock)
 {
diff --git a/vl.c b/vl.c
index ec29909..7aa59f0 100644
--- a/vl.c
+++ b/vl.c
@@ -4661,7 +4661,7 @@ int main(int argc, char **argv, char **envp)
         qapi_free_BlockdevOptions(bdo->bdo);
         g_free(bdo);
     }
-    if (snapshot || replay_mode != REPLAY_MODE_NONE) {
+    if (snapshot) {
         qemu_opts_foreach(qemu_find_opts("drive"), drive_enable_snapshot,
                           NULL, NULL);
     }

[Qemu-devel] [RFC PATCH 03/26] replay: disable default snapshot for record/replay

[Pavel Dovgalyuk]

From: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

This patch disables setting '-snapshot' option on by default
in record/replay mode. This is needed for creating vmstates in record
and replay modes.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 vl.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/vl.c b/vl.c
index 7aa59f0..a8e0d03 100644
--- a/vl.c
+++ b/vl.c
@@ -3314,7 +3314,13 @@ int main(int argc, char **argv, char **envp)
                 drive_add(IF_PFLASH, -1, optarg, PFLASH_OPTS);
                 break;
             case QEMU_OPTION_snapshot:
-                snapshot = 1;
+                {
+                    Error *blocker = NULL;
+                    snapshot = 1;
+                    error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED,
+                               "-snapshot");
+                    replay_add_blocker(blocker);
+                }
                 break;
             case QEMU_OPTION_hdachs:
                 {

[Qemu-devel] [RFC PATCH 04/26] replay: fix processing async events

[Pavel Dovgalyuk]

Asynchronous events saved at checkpoints may invoke
callbacks when processed. These callbacks may also generate/read
new events (e.g. clock reads). Therefore event processing flag must be
reset before callback invocation.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 replay/replay-events.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/replay/replay-events.c b/replay/replay-events.c
index 94a6dcc..768b505 100644
--- a/replay/replay-events.c
+++ b/replay/replay-events.c
@@ -295,13 +295,13 @@ void replay_read_events(int checkpoint)
         if (!event) {
             break;
         }
+        replay_finish_event();
+        read_event_kind = -1;
         replay_mutex_unlock();
         replay_run_event(event);
         replay_mutex_lock();
 
         g_free(event);
-        replay_finish_event();
-        read_event_kind = -1;
     }
 }
 

[Qemu-devel] [RFC PATCH 05/26] replay: fixed replay_enable_events

[Pavel Dovgalyuk]

This patch fixes assignment to internal events_enabled variable.
Now it is set only in record/replay mode. This affects the behavior
of the external functions that check this flag.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 replay/replay-events.c |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/replay/replay-events.c b/replay/replay-events.c
index 768b505..e858254 100644
--- a/replay/replay-events.c
+++ b/replay/replay-events.c
@@ -67,7 +67,9 @@ static void replay_run_event(Event *event)
 
 void replay_enable_events(void)
 {
-    events_enabled = true;
+    if (replay_mode != REPLAY_MODE_NONE) {
+        events_enabled = true;
+    }
 }
 
 bool replay_has_events(void)
@@ -141,7 +143,7 @@ void replay_add_event(ReplayAsyncEventKind event_kind,
 
 void replay_bh_schedule_event(QEMUBH *bh)
 {
-    if (replay_mode != REPLAY_MODE_NONE && events_enabled) {
+    if (events_enabled) {
         uint64_t id = replay_get_current_step();
         replay_add_event(REPLAY_ASYNC_EVENT_BH, bh, NULL, id);
     } else {
@@ -161,7 +163,7 @@ void replay_add_input_sync_event(void)
 
 void replay_block_event(QEMUBH *bh, uint64_t id)
 {
-    if (replay_mode != REPLAY_MODE_NONE && events_enabled) {
+    if (events_enabled) {
         replay_add_event(REPLAY_ASYNC_EVENT_BLOCK, bh, NULL, id);
     } else {
         qemu_bh_schedule(bh);

[Qemu-devel] [RFC PATCH 06/26] replay: fix save/load vm for non-empty queue

[Pavel Dovgalyuk]

This patch does not allows saving/loading vmstate when
replay events queue is not empty. There is no reliable
way to save events queue, because it describes internal
coroutine state. Therefore saving and loading operations
should be deferred to another record/replay step.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 include/sysemu/replay.h  |    3 +++
 migration/savevm.c       |   13 +++++++++++++
 replay/replay-snapshot.c |    6 ++++++
 3 files changed, 22 insertions(+)

diff --git a/include/sysemu/replay.h b/include/sysemu/replay.h
index fa14d0e..b86d6bb 100644
--- a/include/sysemu/replay.h
+++ b/include/sysemu/replay.h
@@ -165,5 +165,8 @@ void replay_audio_in(int *recorded, void *samples, int *wpos, int size);
 /*! Called at the start of execution.
     Loads or saves initial vmstate depending on execution mode. */
 void replay_vmstate_init(void);
+/*! Called to ensure that replay state is consistent and VM snapshot
+    can be created */
+bool replay_can_snapshot(void);
 
 #endif
diff --git a/migration/savevm.c b/migration/savevm.c
index 4a88228..20cebe1 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -52,6 +52,7 @@
 #include "qemu/cutils.h"
 #include "io/channel-buffer.h"
 #include "io/channel-file.h"
+#include "sysemu/replay.h"
 
 #ifndef ETH_P_RARP
 #define ETH_P_RARP 0x8035
@@ -2141,6 +2142,12 @@ int save_snapshot(const char *name, Error **errp)
     struct tm tm;
     AioContext *aio_context;
 
+    if (!replay_can_snapshot()) {
+        monitor_printf(mon, "Record/replay does not allow making snapshot "
+                        "right now. Try once more later.\n");
+        return ret;
+    }
+
     if (!bdrv_all_can_snapshot(&bs)) {
         error_setg(errp, "Device '%s' is writable but does not support "
                    "snapshots", bdrv_get_device_name(bs));
@@ -2310,6 +2317,12 @@ int load_snapshot(const char *name, Error **errp)
     AioContext *aio_context;
     MigrationIncomingState *mis = migration_incoming_get_current();
 
+    if (!replay_can_snapshot()) {
+        error_report("Record/replay does not allow loading snapshot "
+                     "right now. Try once more later.\n");
+        return -EINVAL;
+    }
+
     if (!bdrv_all_can_snapshot(&bs)) {
         error_setg(errp,
                    "Device '%s' is writable but does not support snapshots",
diff --git a/replay/replay-snapshot.c b/replay/replay-snapshot.c
index b2e1076..7075986 100644
--- a/replay/replay-snapshot.c
+++ b/replay/replay-snapshot.c
@@ -83,3 +83,9 @@ void replay_vmstate_init(void)
         }
     }
 }
+
+bool replay_can_snapshot(void)
+{
+    return replay_mode == REPLAY_MODE_NONE
+        || !replay_has_events();
+}

[Qemu-devel] [RFC PATCH 07/26] replay: added replay log format description

[Pavel Dovgalyuk]

From: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

This patch adds description of the replay log file format
into the docs/replay.txt.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 docs/replay.txt |   69 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)

diff --git a/docs/replay.txt b/docs/replay.txt
index 486c1e0..c52407f 100644
--- a/docs/replay.txt
+++ b/docs/replay.txt
@@ -232,3 +232,72 @@ Audio devices
 Audio data is recorded and replay automatically. The command line for recording
 and replaying must contain identical specifications of audio hardware, e.g.:
  -soundhw ac97
+
+Replay log format
+-----------------
+
+Record/replay log consits of the header and the sequence of execution
+events. The header includes 4-byte replay version id and 8-byte reserved
+field. Version is updated every time replay log format changes to prevent
+using replay log created by another build of qemu.
+
+The sequence of the events describes virtual machine state changes.
+It includes all non-deterministic inputs of VM, synchronization marks and
+instruction counts used to correctly inject inputs at replay.
+
+Synchronization marks (checkpoints) are used for synchronizing qemu threads
+that perform operations with virtual hardware. These operations may change
+system's state (e.g., change some register or generate interrupt) and
+therefore should execute synchronously with CPU thread.
+
+Every event in the log includes 1-byte event id and optional arguments.
+When argument is an array, it is stored as 4-byte array length
+and corresponding number of bytes with data.
+Here is the list of events that are written into the log:
+
+ - EVENT_INSTRUCTION. Instructions executed since last event.
+   Argument: 4-byte number of executed instructions.
+ - EVENT_INTERRUPT. Used to synchronize interrupt processing.
+ - EVENT_EXCEPTION. Used to synchronize exception handling.
+ - EVENT_ASYNC. This is a group of events. They are always processed
+   together with checkpoints. When such an event is generated, it is
+   stored in the queue and processed only when checkpoint occurs.
+   Every such event is followed by 1-byte checkpoint id and 1-byte
+   async event id from the following list:
+     - REPLAY_ASYNC_EVENT_BH. Bottom-half callback. This event synchronizes
+       callbacks that affect virtual machine state, but normally called
+       asyncronously.
+       Argument: 8-byte operation id.
+     - REPLAY_ASYNC_EVENT_INPUT. Input device event. Contains
+       parameters of keyboard and mouse input operations
+       (key press/release, mouse pointer movement).
+       Arguments: 9-16 bytes depending of input event.
+     - REPLAY_ASYNC_EVENT_INPUT_SYNC. Internal input synchronization event.
+     - REPLAY_ASYNC_EVENT_CHAR_READ. Character (e.g., serial port) device input
+       initiated by the sender.
+       Arguments: 1-byte character device id.
+                  Array with bytes were read.
+     - REPLAY_ASYNC_EVENT_BLOCK. Block device operation. Used to synchronize
+       operations with disk and flash drives with CPU.
+       Argument: 8-byte operation id.
+     - REPLAY_ASYNC_EVENT_NET. Incoming network packet.
+       Arguments: 1-byte network adapter id.
+                  4-byte packet flags.
+                  Array with packet bytes.
+ - EVENT_SHUTDOWN. Occurs when user sends shutdown event to qemu,
+   e.g., by closing the window.
+ - EVENT_CHAR_WRITE. Used to synchronize character output operations.
+   Arguments: 4-byte output function return value.
+              4-byte offset in the output array.
+ - EVENT_CHAR_READ_ALL. Used to synchronize character input operations,
+   initiated by qemu.
+   Argument: Array with bytes that were read.
+ - EVENT_CHAR_READ_ALL_ERROR. Unsuccessful character input operation,
+   initiated by qemu.
+   Argument: 4-byte error code.
+ - EVENT_CLOCK + clock_id. Group of events for host clock read operations.
+   Argument: 8-byte clock value.
+ - EVENT_CHECKPOINT + checkpoint_id. Checkpoint for synchronization of
+   CPU, internal threads, and asynchronous input events. May be followed
+   by one or more EVENT_ASYNC events.
+ - EVENT_END. Last event in the log.

[Qemu-devel] [RFC PATCH 08/26] replay: make safe vmstop at record/replay

[Pavel Dovgalyuk]

From: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

This patch disables bdrv flush/drain in record/replay mode.
When block request is in the replay queue it cannot be processed
with drain/flush until it is found in the log.
Therefore vm should just stop leaving unfinished operations
in the queue.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 cpus.c             |    7 ++++---
 migration/savevm.c |    4 ++--
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/cpus.c b/cpus.c
index 114c29b..c728f3a 100644
--- a/cpus.c
+++ b/cpus.c
@@ -942,9 +942,10 @@ static int do_vm_stop(RunState state)
         qapi_event_send_stop(&error_abort);
     }
 
-    bdrv_drain_all();
-    replay_disable_events();
-    ret = bdrv_flush_all();
+    if (!replay_events_enabled()) {
+        bdrv_drain_all();
+        ret = bdrv_flush_all();
+    }
 
     return ret;
 }
diff --git a/migration/savevm.c b/migration/savevm.c
index 20cebe1..41a13c0 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -2143,8 +2143,8 @@ int save_snapshot(const char *name, Error **errp)
     AioContext *aio_context;
 
     if (!replay_can_snapshot()) {
-        monitor_printf(mon, "Record/replay does not allow making snapshot "
-                        "right now. Try once more later.\n");
+        error_report("Record/replay does not allow making snapshot "
+                     "right now. Try once more later.\n");
         return ret;
     }
 

[Qemu-devel] [RFC PATCH 09/26] replay: save prior value of the host clock

[Pavel Dovgalyuk]

This patch adds saving/restoring of the host clock field 'last'.
It is used in host clock calculation and therefore clock may
become incorrect when using restored vmstate.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 include/qemu/timer.h     |   14 ++++++++++++++
 replay/replay-internal.h |    2 ++
 replay/replay-snapshot.c |    3 +++
 util/qemu-timer.c        |   12 ++++++++++++
 4 files changed, 31 insertions(+)

diff --git a/include/qemu/timer.h b/include/qemu/timer.h
index 1b518bc..a610a17 100644
--- a/include/qemu/timer.h
+++ b/include/qemu/timer.h
@@ -251,6 +251,20 @@ bool qemu_clock_run_timers(QEMUClockType type);
  */
 bool qemu_clock_run_all_timers(void);
 
+/**
+ * qemu_clock_get_last:
+ *
+ * Returns last clock query time.
+ */
+uint64_t qemu_clock_get_last(QEMUClockType type);
+/**
+ * qemu_clock_set_last:
+ *
+ * Sets last clock query time.
+ */
+void qemu_clock_set_last(QEMUClockType type, uint64_t last);
+
+
 /*
  * QEMUTimerList
  */
diff --git a/replay/replay-internal.h b/replay/replay-internal.h
index 3ebb199..be96d7e 100644
--- a/replay/replay-internal.h
+++ b/replay/replay-internal.h
@@ -78,6 +78,8 @@ typedef struct ReplayState {
         This counter is global, because requests from different
         block devices should not get overlapping ids. */
     uint64_t block_request_id;
+    /*! Prior value of the host clock */
+    uint64_t host_clock_last;
 } ReplayState;
 extern ReplayState replay_state;
 
diff --git a/replay/replay-snapshot.c b/replay/replay-snapshot.c
index 7075986..e0b2204 100644
--- a/replay/replay-snapshot.c
+++ b/replay/replay-snapshot.c
@@ -25,6 +25,7 @@ static int replay_pre_save(void *opaque)
 {
     ReplayState *state = opaque;
     state->file_offset = ftell(replay_file);
+    state->host_clock_last = qemu_clock_get_last(QEMU_CLOCK_HOST);
 
     return 0;
 }
@@ -33,6 +34,7 @@ static int replay_post_load(void *opaque, int version_id)
 {
     ReplayState *state = opaque;
     fseek(replay_file, state->file_offset, SEEK_SET);
+    qemu_clock_set_last(QEMU_CLOCK_HOST, state->host_clock_last);
     /* If this was a vmstate, saved in recording mode,
        we need to initialize replay data fields. */
     replay_fetch_data_kind();
@@ -54,6 +56,7 @@ static const VMStateDescription vmstate_replay = {
         VMSTATE_UINT32(has_unread_data, ReplayState),
         VMSTATE_UINT64(file_offset, ReplayState),
         VMSTATE_UINT64(block_request_id, ReplayState),
+        VMSTATE_UINT64(host_clock_last, ReplayState),
         VMSTATE_END_OF_LIST()
     },
 };
diff --git a/util/qemu-timer.c b/util/qemu-timer.c
index 82d5650..2ed1bf2 100644
--- a/util/qemu-timer.c
+++ b/util/qemu-timer.c
@@ -622,6 +622,18 @@ int64_t qemu_clock_get_ns(QEMUClockType type)
     }
 }
 
+uint64_t qemu_clock_get_last(QEMUClockType type)
+{
+    QEMUClock *clock = qemu_clock_ptr(type);
+    return clock->last;
+}
+
+void qemu_clock_set_last(QEMUClockType type, uint64_t last)
+{
+    QEMUClock *clock = qemu_clock_ptr(type);
+    clock->last = last;
+}
+
 void qemu_clock_register_reset_notifier(QEMUClockType type,
                                         Notifier *notifier)
 {

[Qemu-devel] [RFC PATCH 10/26] icount: fixed saving/restoring of icount warp timers

[Pavel Dovgalyuk]

This patch adds saving and restoring of the icount warp
timers in the vmstate.
It is needed because there timers affect the virtual clock value.
Therefore determinism of the execution in icount record/replay mode
depends on determinism of the timers.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 cpus.c |   85 ++++++++++++++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 66 insertions(+), 19 deletions(-)

diff --git a/cpus.c b/cpus.c
index c728f3a..2eec54f 100644
--- a/cpus.c
+++ b/cpus.c
@@ -119,16 +119,11 @@ static bool all_cpu_threads_idle(void)
 /* Protected by TimersState seqlock */
 
 static bool icount_sleep = true;
-static int64_t vm_clock_warp_start = -1;
 /* Conversion factor from emulated instructions to virtual clock ticks.  */
 static int icount_time_shift;
 /* Arbitrarily pick 1MIPS as the minimum allowable speed.  */
 #define MAX_ICOUNT_SHIFT 10
 
-static QEMUTimer *icount_rt_timer;
-static QEMUTimer *icount_vm_timer;
-static QEMUTimer *icount_warp_timer;
-
 typedef struct TimersState {
     /* Protected by BQL.  */
     int64_t cpu_ticks_prev;
@@ -146,6 +141,11 @@ typedef struct TimersState {
     int64_t qemu_icount_bias;
     /* Only written by TCG thread */
     int64_t qemu_icount;
+    /* for adjusting icount */
+    int64_t vm_clock_warp_start;
+    QEMUTimer *icount_rt_timer;
+    QEMUTimer *icount_vm_timer;
+    QEMUTimer *icount_warp_timer;
 } TimersState;
 
 static TimersState timers_state;
@@ -431,14 +431,14 @@ static void icount_adjust(void)
 
 static void icount_adjust_rt(void *opaque)
 {
-    timer_mod(icount_rt_timer,
+    timer_mod(timers_state.icount_rt_timer,
               qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL_RT) + 1000);
     icount_adjust();
 }
 
 static void icount_adjust_vm(void *opaque)
 {
-    timer_mod(icount_vm_timer,
+    timer_mod(timers_state.icount_vm_timer,
                    qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
                    NANOSECONDS_PER_SECOND / 10);
     icount_adjust();
@@ -459,7 +459,7 @@ static void icount_warp_rt(void)
      */
     do {
         seq = seqlock_read_begin(&timers_state.vm_clock_seqlock);
-        warp_start = vm_clock_warp_start;
+        warp_start = timers_state.vm_clock_warp_start;
     } while (seqlock_read_retry(&timers_state.vm_clock_seqlock, seq));
 
     if (warp_start == -1) {
@@ -472,7 +472,7 @@ static void icount_warp_rt(void)
                                      cpu_get_clock_locked());
         int64_t warp_delta;
 
-        warp_delta = clock - vm_clock_warp_start;
+        warp_delta = clock - timers_state.vm_clock_warp_start;
         if (use_icount == 2) {
             /*
              * In adaptive mode, do not let QEMU_CLOCK_VIRTUAL run too
@@ -484,7 +484,7 @@ static void icount_warp_rt(void)
         }
         timers_state.qemu_icount_bias += warp_delta;
     }
-    vm_clock_warp_start = -1;
+    timers_state.vm_clock_warp_start = -1;
     seqlock_write_end(&timers_state.vm_clock_seqlock);
 
     if (qemu_clock_expired(QEMU_CLOCK_VIRTUAL)) {
@@ -593,11 +593,13 @@ void qemu_start_warp_timer(void)
              * every 100ms.
              */
             seqlock_write_begin(&timers_state.vm_clock_seqlock);
-            if (vm_clock_warp_start == -1 || vm_clock_warp_start > clock) {
-                vm_clock_warp_start = clock;
+            if (timers_state.vm_clock_warp_start == -1
+                || timers_state.vm_clock_warp_start > clock) {
+                timers_state.vm_clock_warp_start = clock;
             }
             seqlock_write_end(&timers_state.vm_clock_seqlock);
-            timer_mod_anticipate(icount_warp_timer, clock + deadline);
+            timer_mod_anticipate(timers_state.icount_warp_timer,
+                                 clock + deadline);
         }
     } else if (deadline == 0) {
         qemu_clock_notify(QEMU_CLOCK_VIRTUAL);
@@ -622,7 +624,7 @@ static void qemu_account_warp_timer(void)
         return;
     }
 
-    timer_del(icount_warp_timer);
+    timer_del(timers_state.icount_warp_timer);
     icount_warp_rt();
 }
 
@@ -631,6 +633,44 @@ static bool icount_state_needed(void *opaque)
     return use_icount;
 }
 
+static bool warp_timer_state_needed(void *opaque)
+{
+    TimersState *s = opaque;
+    return s->icount_warp_timer != NULL;
+}
+
+static bool adjust_timers_state_needed(void *opaque)
+{
+    TimersState *s = opaque;
+    return s->icount_rt_timer != NULL;
+}
+
+/*
+ * Subsection for warp timer migration is optional, because may not be created
+ */
+static const VMStateDescription icount_vmstate_warp_timer = {
+    .name = "timer/icount/warp_timer",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .needed = warp_timer_state_needed,
+    .fields = (VMStateField[]) {
+        VMSTATE_TIMER_PTR(icount_warp_timer, TimersState),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
+static const VMStateDescription icount_vmstate_adjust_timers = {
+    .name = "timer/icount/timers",
+    .version_id = 1,
+    .minimum_version_id = 1,
+    .needed = adjust_timers_state_needed,
+    .fields = (VMStateField[]) {
+        VMSTATE_TIMER_PTR(icount_rt_timer, TimersState),
+        VMSTATE_TIMER_PTR(icount_vm_timer, TimersState),
+        VMSTATE_END_OF_LIST()
+    }
+};
+
 /*
  * This is a subsection for icount migration.
  */
@@ -642,7 +682,13 @@ static const VMStateDescription icount_vmstate_timers = {
     .fields = (VMStateField[]) {
         VMSTATE_INT64(qemu_icount_bias, TimersState),
         VMSTATE_INT64(qemu_icount, TimersState),
+        VMSTATE_INT64(vm_clock_warp_start, TimersState),
         VMSTATE_END_OF_LIST()
+    },
+    .subsections = (const VMStateDescription*[]) {
+        &icount_vmstate_warp_timer,
+        &icount_vmstate_adjust_timers,
+        NULL
     }
 };
 
@@ -753,7 +799,7 @@ void configure_icount(QemuOpts *opts, Error **errp)
 
     icount_sleep = qemu_opt_get_bool(opts, "sleep", true);
     if (icount_sleep) {
-        icount_warp_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL_RT,
+        timers_state.icount_warp_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL_RT,
                                          icount_timer_cb, NULL);
     }
 
@@ -787,13 +833,14 @@ void configure_icount(QemuOpts *opts, Error **errp)
        the virtual time trigger catches emulated time passing too fast.
        Realtime triggers occur even when idle, so use them less frequently
        than VM triggers.  */
-    icount_rt_timer = timer_new_ms(QEMU_CLOCK_VIRTUAL_RT,
+    timers_state.vm_clock_warp_start = -1;
+    timers_state.icount_rt_timer = timer_new_ms(QEMU_CLOCK_VIRTUAL_RT,
                                    icount_adjust_rt, NULL);
-    timer_mod(icount_rt_timer,
+    timer_mod(timers_state.icount_rt_timer,
                    qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL_RT) + 1000);
-    icount_vm_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
+    timers_state.icount_vm_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
                                         icount_adjust_vm, NULL);
-    timer_mod(icount_vm_timer,
+    timer_mod(timers_state.icount_vm_timer,
                    qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL) +
                    NANOSECONDS_PER_SECOND / 10);
 }

[Qemu-devel] [RFC PATCH 11/26] target/arm/arm-powertctl: drop BQL assertions

[Pavel Dovgalyuk]

From: Alex Bennée <alex.bennee@linaro.org>

The powerctl code is run in the context of the vCPU changing power
state. It does not need the BQL to protect its changes.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

---
 target/arm/arm-powerctl.c |    8 --------
 1 file changed, 8 deletions(-)

diff --git a/target/arm/arm-powerctl.c b/target/arm/arm-powerctl.c
index 25207cb..9661a59 100644
--- a/target/arm/arm-powerctl.c
+++ b/target/arm/arm-powerctl.c
@@ -124,7 +124,6 @@ static void arm_set_cpu_on_async_work(CPUState *target_cpu_state,
     g_free(info);
 
     /* Finally set the power status */
-    assert(qemu_mutex_iothread_locked());
     target_cpu->power_state = PSCI_ON;
 }
 
@@ -135,8 +134,6 @@ int arm_set_cpu_on(uint64_t cpuid, uint64_t entry, uint64_t context_id,
     ARMCPU *target_cpu;
     struct CpuOnInfo *info;
 
-    assert(qemu_mutex_iothread_locked());
-
     DPRINTF("cpu %" PRId64 " (EL %d, %s) @ 0x%" PRIx64 " with R0 = 0x%" PRIx64
             "\n", cpuid, target_el, target_aa64 ? "aarch64" : "aarch32", entry,
             context_id);
@@ -227,7 +224,6 @@ static void arm_set_cpu_off_async_work(CPUState *target_cpu_state,
 {
     ARMCPU *target_cpu = ARM_CPU(target_cpu_state);
 
-    assert(qemu_mutex_iothread_locked());
     target_cpu->power_state = PSCI_OFF;
     target_cpu_state->halted = 1;
     target_cpu_state->exception_index = EXCP_HLT;
@@ -238,8 +234,6 @@ int arm_set_cpu_off(uint64_t cpuid)
     CPUState *target_cpu_state;
     ARMCPU *target_cpu;
 
-    assert(qemu_mutex_iothread_locked());
-
     DPRINTF("cpu %" PRId64 "\n", cpuid);
 
     /* change to the cpu we are powering up */
@@ -274,8 +268,6 @@ int arm_reset_cpu(uint64_t cpuid)
     CPUState *target_cpu_state;
     ARMCPU *target_cpu;
 
-    assert(qemu_mutex_iothread_locked());
-
     DPRINTF("cpu %" PRId64 "\n", cpuid);
 
     /* change to the cpu we are resetting */

[Qemu-devel] [RFC PATCH 12/26] cpus: push BQL lock to qemu_*_wait_io_event

[Pavel Dovgalyuk]

From: Alex Bennée <alex.bennee@linaro.org>

We only really need to grab the lock for initial setup (so we don't
race with the thread-spawning thread). After that we can drop the lock
for the whole main loop and only grab it for waiting for IO events.

There is a slight wrinkle for the round-robin TCG thread as we also
expire timers which needs to be done under BQL as they are in the
main-loop.

This is stage one of reducing the lock impact as we can drop the
requirement of implicit BQL for async work and only grab the lock when
we need to sleep on the cpu->halt_cond.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 accel/kvm/kvm-all.c   |    4 ----
 cpus.c                |   27 ++++++++++++++++++++-------
 target/i386/hax-all.c |    3 +--
 3 files changed, 21 insertions(+), 13 deletions(-)

diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index f290f48..8d1d2c4 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -1857,9 +1857,7 @@ int kvm_cpu_exec(CPUState *cpu)
         return EXCP_HLT;
     }
 
-    qemu_mutex_unlock_iothread();
     cpu_exec_start(cpu);
-
     do {
         MemTxAttrs attrs;
 
@@ -1989,8 +1987,6 @@ int kvm_cpu_exec(CPUState *cpu)
     } while (ret == 0);
 
     cpu_exec_end(cpu);
-    qemu_mutex_lock_iothread();
-
     if (ret < 0) {
         cpu_dump_state(cpu, stderr, fprintf, CPU_DUMP_CODE);
         vm_stop(RUN_STATE_INTERNAL_ERROR);
diff --git a/cpus.c b/cpus.c
index 2eec54f..efde5c1 100644
--- a/cpus.c
+++ b/cpus.c
@@ -1127,6 +1127,8 @@ static bool qemu_tcg_should_sleep(CPUState *cpu)
 
 static void qemu_tcg_wait_io_event(CPUState *cpu)
 {
+    qemu_mutex_lock_iothread();
+
     while (qemu_tcg_should_sleep(cpu)) {
         stop_tcg_kick_timer();
         qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex);
@@ -1135,15 +1137,21 @@ static void qemu_tcg_wait_io_event(CPUState *cpu)
     start_tcg_kick_timer();
 
     qemu_wait_io_event_common(cpu);
+
+    qemu_mutex_unlock_iothread();
 }
 
 static void qemu_kvm_wait_io_event(CPUState *cpu)
 {
+    qemu_mutex_lock_iothread();
+
     while (cpu_thread_is_idle(cpu)) {
         qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex);
     }
 
     qemu_wait_io_event_common(cpu);
+
+    qemu_mutex_unlock_iothread();
 }
 
 static void *qemu_kvm_cpu_thread_fn(void *arg)
@@ -1169,6 +1177,8 @@ static void *qemu_kvm_cpu_thread_fn(void *arg)
 
     /* signal CPU creation */
     cpu->created = true;
+    qemu_mutex_unlock_iothread();
+
     qemu_cond_signal(&qemu_cpu_cond);
 
     do {
@@ -1211,10 +1221,10 @@ static void *qemu_dummy_cpu_thread_fn(void *arg)
 
     /* signal CPU creation */
     cpu->created = true;
+    qemu_mutex_unlock_iothread();
     qemu_cond_signal(&qemu_cpu_cond);
 
     while (1) {
-        qemu_mutex_unlock_iothread();
         do {
             int sig;
             r = sigwait(&waitset, &sig);
@@ -1225,6 +1235,7 @@ static void *qemu_dummy_cpu_thread_fn(void *arg)
         }
         qemu_mutex_lock_iothread();
         qemu_wait_io_event_common(cpu);
+        qemu_mutex_unlock_iothread();
     }
 
     return NULL;
@@ -1313,11 +1324,9 @@ static int tcg_cpu_exec(CPUState *cpu)
 #ifdef CONFIG_PROFILER
     ti = profile_getclock();
 #endif
-    qemu_mutex_unlock_iothread();
     cpu_exec_start(cpu);
     ret = cpu_exec(cpu);
     cpu_exec_end(cpu);
-    qemu_mutex_lock_iothread();
 #ifdef CONFIG_PROFILER
     tcg_time += profile_getclock() - ti;
 #endif
@@ -1377,6 +1386,7 @@ static void *qemu_tcg_rr_cpu_thread_fn(void *arg)
             qemu_wait_io_event_common(cpu);
         }
     }
+    qemu_mutex_unlock_iothread();
 
     start_tcg_kick_timer();
 
@@ -1386,6 +1396,9 @@ static void *qemu_tcg_rr_cpu_thread_fn(void *arg)
     cpu->exit_request = 1;
 
     while (1) {
+
+        qemu_mutex_lock_iothread();
+
         /* Account partial waits to QEMU_CLOCK_VIRTUAL.  */
         qemu_account_warp_timer();
 
@@ -1394,6 +1407,8 @@ static void *qemu_tcg_rr_cpu_thread_fn(void *arg)
          */
         handle_icount_deadline();
 
+        qemu_mutex_unlock_iothread();
+
         if (!cpu) {
             cpu = first_cpu;
         }
@@ -1419,9 +1434,7 @@ static void *qemu_tcg_rr_cpu_thread_fn(void *arg)
                     cpu_handle_guest_debug(cpu);
                     break;
                 } else if (r == EXCP_ATOMIC) {
-                    qemu_mutex_unlock_iothread();
                     cpu_exec_step_atomic(cpu);
-                    qemu_mutex_lock_iothread();
                     break;
                 }
             } else if (cpu->stop) {
@@ -1462,6 +1475,7 @@ static void *qemu_hax_cpu_thread_fn(void *arg)
     current_cpu = cpu;
 
     hax_init_vcpu(cpu);
+    qemu_mutex_unlock_iothread();
     qemu_cond_signal(&qemu_cpu_cond);
 
     while (1) {
@@ -1512,6 +1526,7 @@ static void *qemu_tcg_cpu_thread_fn(void *arg)
     cpu->created = true;
     cpu->can_do_io = 1;
     current_cpu = cpu;
+    qemu_mutex_unlock_iothread();
     qemu_cond_signal(&qemu_cpu_cond);
 
     /* process any pending work */
@@ -1536,9 +1551,7 @@ static void *qemu_tcg_cpu_thread_fn(void *arg)
                 g_assert(cpu->halted);
                 break;
             case EXCP_ATOMIC:
-                qemu_mutex_unlock_iothread();
                 cpu_exec_step_atomic(cpu);
-                qemu_mutex_lock_iothread();
             default:
                 /* Ignore everything else? */
                 break;
diff --git a/target/i386/hax-all.c b/target/i386/hax-all.c
index 3ce6950..99af6bb 100644
--- a/target/i386/hax-all.c
+++ b/target/i386/hax-all.c
@@ -513,11 +513,10 @@ static int hax_vcpu_hax_exec(CPUArchState *env)
 
         hax_vcpu_interrupt(env);
 
-        qemu_mutex_unlock_iothread();
         cpu_exec_start(cpu);
         hax_ret = hax_vcpu_run(vcpu);
+        current_cpu = cpu;
         cpu_exec_end(cpu);
-        qemu_mutex_lock_iothread();
 
         /* Simply continue the vcpu_run if system call interrupted */
         if (hax_ret == -EINTR || hax_ret == -EAGAIN) {

[Qemu-devel] [RFC PATCH 13/26] cpus: only take BQL for sleeping threads

[Pavel Dovgalyuk]

From: Alex Bennée <alex.bennee@linaro.org>

Now the only real need to hold the BQL is for when we sleep on the
cpu->halt conditional. The lock is actually dropped while the thread
sleeps so the actual window for contention is pretty small. This also
means we can remove the special case hack for exclusive work and
simply declare that work no longer has an implicit BQL held. This
isn't a major problem async work is generally only changing things in
the context of its own vCPU. If it needs to work across vCPUs it
should be using the exclusive mechanism or possibly taking the lock
itself.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 cpus-common.c |   13 +++++--------
 cpus.c        |   10 ++++------
 2 files changed, 9 insertions(+), 14 deletions(-)

diff --git a/cpus-common.c b/cpus-common.c
index 59f751e..64661c3 100644
--- a/cpus-common.c
+++ b/cpus-common.c
@@ -310,6 +310,11 @@ void async_safe_run_on_cpu(CPUState *cpu, run_on_cpu_func func,
     queue_work_on_cpu(cpu, wi);
 }
 
+/* Work items run outside of the BQL. This is essential for avoiding a
+ * deadlock for exclusive work but also applies to non-exclusive work.
+ * If the work requires cross-vCPU changes then it should use the
+ * exclusive mechanism.
+ */
 void process_queued_cpu_work(CPUState *cpu)
 {
     struct qemu_work_item *wi;
@@ -327,17 +332,9 @@ void process_queued_cpu_work(CPUState *cpu)
         }
         qemu_mutex_unlock(&cpu->work_mutex);
         if (wi->exclusive) {
-            /* Running work items outside the BQL avoids the following deadlock:
-             * 1) start_exclusive() is called with the BQL taken while another
-             * CPU is running; 2) cpu_exec in the other CPU tries to takes the
-             * BQL, so it goes to sleep; start_exclusive() is sleeping too, so
-             * neither CPU can proceed.
-             */
-            qemu_mutex_unlock_iothread();
             start_exclusive();
             wi->func(cpu, wi->data);
             end_exclusive();
-            qemu_mutex_lock_iothread();
         } else {
             wi->func(cpu, wi->data);
         }
diff --git a/cpus.c b/cpus.c
index efde5c1..de6dfce 100644
--- a/cpus.c
+++ b/cpus.c
@@ -1127,31 +1127,29 @@ static bool qemu_tcg_should_sleep(CPUState *cpu)
 
 static void qemu_tcg_wait_io_event(CPUState *cpu)
 {
-    qemu_mutex_lock_iothread();
 
     while (qemu_tcg_should_sleep(cpu)) {
+        qemu_mutex_lock_iothread();
         stop_tcg_kick_timer();
         qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex);
+        qemu_mutex_unlock_iothread();
     }
 
     start_tcg_kick_timer();
 
     qemu_wait_io_event_common(cpu);
-
-    qemu_mutex_unlock_iothread();
 }
 
 static void qemu_kvm_wait_io_event(CPUState *cpu)
 {
-    qemu_mutex_lock_iothread();
 
     while (cpu_thread_is_idle(cpu)) {
+        qemu_mutex_lock_iothread();
         qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex);
+        qemu_mutex_unlock_iothread();
     }
 
     qemu_wait_io_event_common(cpu);
-
-    qemu_mutex_unlock_iothread();
 }
 
 static void *qemu_kvm_cpu_thread_fn(void *arg)

[Qemu-devel] [RFC PATCH 14/26] replay/replay.c: bump REPLAY_VERSION again

[Pavel Dovgalyuk]

From: Alex Bennée <alex.bennee@linaro.org>

This time commit 802f045a5f61b781df55e4492d896b4d20503ba7 broke the
replay file format. Also add a comment about this to
replay-internal.h.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 replay/replay-internal.h |    2 +-
 replay/replay.c          |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/replay/replay-internal.h b/replay/replay-internal.h
index be96d7e..8e4c701 100644
--- a/replay/replay-internal.h
+++ b/replay/replay-internal.h
@@ -12,7 +12,7 @@
  *
  */
 
-
+/* Any changes to order/number of events will need to bump REPLAY_VERSION */
 enum ReplayEvents {
     /* for instruction event */
     EVENT_INSTRUCTION,
diff --git a/replay/replay.c b/replay/replay.c
index ff58a5a..4f24498 100644
--- a/replay/replay.c
+++ b/replay/replay.c
@@ -22,7 +22,7 @@
 
 /* Current version of the replay mechanism.
    Increase it when file format changes. */
-#define REPLAY_VERSION              0xe02006
+#define REPLAY_VERSION              0xe02007
 /* Size of replay log header */
 #define HEADER_SIZE                 (sizeof(uint32_t) + sizeof(uint64_t))
 

[Qemu-devel] [RFC PATCH 15/26] replay/replay-internal.c: track holding of replay_lock

[Pavel Dovgalyuk]

From: Alex Bennée <alex.bennee@linaro.org>

This is modelled after the iothread mutex lock. We keep a TLS flag to
indicate when that thread has acquired the lock and assert we don't
double-lock or release when we shouldn't have.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 replay/replay-internal.c |   11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/replay/replay-internal.c b/replay/replay-internal.c
index fca8514..157c863 100644
--- a/replay/replay-internal.c
+++ b/replay/replay-internal.c
@@ -179,13 +179,24 @@ void replay_mutex_destroy(void)
     qemu_mutex_destroy(&lock);
 }
 
+static __thread bool replay_locked;
+
+static bool replay_mutex_locked(void)
+{
+    return replay_locked;
+}
+
 void replay_mutex_lock(void)
 {
+    g_assert(!replay_mutex_locked());
     qemu_mutex_lock(&lock);
+    replay_locked = true;
 }
 
 void replay_mutex_unlock(void)
 {
+    g_assert(replay_mutex_locked());
+    replay_locked = false;
     qemu_mutex_unlock(&lock);
 }
 

[Qemu-devel] [RFC PATCH 16/26] replay: make locking visible outside replay code

[Pavel Dovgalyuk]

From: Alex Bennée <alex.bennee@linaro.org>

The replay_mutex_lock/unlock/locked functions are now going to be used
for ensuring lock-step behaviour between the two threads. Make them
public API functions and also provide stubs for non-QEMU builds on
common paths.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 include/sysemu/replay.h  |   14 ++++++++++++++
 replay/replay-internal.c |    5 ++---
 replay/replay-internal.h |    5 ++---
 stubs/replay.c           |   15 +++++++++++++++
 4 files changed, 33 insertions(+), 6 deletions(-)

diff --git a/include/sysemu/replay.h b/include/sysemu/replay.h
index b86d6bb..9973849 100644
--- a/include/sysemu/replay.h
+++ b/include/sysemu/replay.h
@@ -47,6 +47,20 @@ extern ReplayMode replay_mode;
 /* Name of the initial VM snapshot */
 extern char *replay_snapshot;
 
+/* Replay locking
+ *
+ * The locks are needed to protect the shared structures and log file
+ * when doing record/replay. They also are the main sync-point between
+ * the main-loop thread and the vCPU thread. This was a role
+ * previously filled by the BQL which has been busy trying to reduce
+ * its impact across the code. This ensures blocks of events stay
+ * sequential and reproducible.
+ */
+
+void replay_mutex_lock(void);
+void replay_mutex_unlock(void);
+bool replay_mutex_locked(void);
+
 /* Replay process control functions */
 
 /*! Enables recording or saving event log with specified parameters */
diff --git a/replay/replay-internal.c b/replay/replay-internal.c
index 157c863..e6b2fdb 100644
--- a/replay/replay-internal.c
+++ b/replay/replay-internal.c
@@ -181,7 +181,7 @@ void replay_mutex_destroy(void)
 
 static __thread bool replay_locked;
 
-static bool replay_mutex_locked(void)
+bool replay_mutex_locked(void)
 {
     return replay_locked;
 }
@@ -204,7 +204,7 @@ void replay_mutex_unlock(void)
 void replay_save_instructions(void)
 {
     if (replay_file && replay_mode == REPLAY_MODE_RECORD) {
-        replay_mutex_lock();
+        g_assert(replay_mutex_locked());
         int diff = (int)(replay_get_current_step() - replay_state.current_step);
 
         /* Time can only go forward */
@@ -215,6 +215,5 @@ void replay_save_instructions(void)
             replay_put_dword(diff);
             replay_state.current_step += diff;
         }
-        replay_mutex_unlock();
     }
 }
diff --git a/replay/replay-internal.h b/replay/replay-internal.h
index 8e4c701..f5f8e96 100644
--- a/replay/replay-internal.h
+++ b/replay/replay-internal.h
@@ -100,12 +100,11 @@ int64_t replay_get_qword(void);
 void replay_get_array(uint8_t *buf, size_t *size);
 void replay_get_array_alloc(uint8_t **buf, size_t *size);
 
-/* Mutex functions for protecting replay log file */
+/* Mutex functions for protecting replay log file and ensuring
+ * synchronisation between vCPU and main-loop threads. */
 
 void replay_mutex_init(void);
 void replay_mutex_destroy(void);
-void replay_mutex_lock(void);
-void replay_mutex_unlock(void);
 
 /*! Checks error status of the file. */
 void replay_check_error(void);
diff --git a/stubs/replay.c b/stubs/replay.c
index 9991ee5..cb050ef 100644
--- a/stubs/replay.c
+++ b/stubs/replay.c
@@ -73,3 +73,18 @@ uint64_t blkreplay_next_id(void)
 {
     return 0;
 }
+
+void replay_mutex_lock(void)
+{
+    abort();
+}
+
+void replay_mutex_unlock(void)
+{
+    abort();
+}
+
+bool replay_mutex_locked(void)
+{
+    return false;
+}

[Qemu-devel] [RFC PATCH 17/26] replay: push replay_mutex_lock up the call tree

[Pavel Dovgalyuk]

From: Alex Bennée <alex.bennee@linaro.org>

Now instead of using the replay_lock to guard the output of the log we
now use it to protect the whole execution section. This replaces what
the BQL used to do when it was held during TCG execution.

We also introduce some rules for locking order - mainly that you
cannot take the replay_mutex while holding the BQL. This leads to some
slight sophistry during start-up and extending the
replay_mutex_destroy function to unlock the mutex without checking
for the BQL condition so it can be cleanly dropped in the non-replay
case.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 cpus.c                   |   32 ++++++++++++++++++++++++++++++++
 docs/replay.txt          |   19 +++++++++++++++++++
 include/sysemu/replay.h  |    2 ++
 replay/replay-char.c     |   21 ++++++++-------------
 replay/replay-events.c   |   18 +++++-------------
 replay/replay-internal.c |   18 +++++++++++++-----
 replay/replay-time.c     |   10 +++++-----
 replay/replay.c          |   40 ++++++++++++++++++++--------------------
 util/main-loop.c         |   23 ++++++++++++++++++++---
 vl.c                     |    2 ++
 10 files changed, 126 insertions(+), 59 deletions(-)

diff --git a/cpus.c b/cpus.c
index de6dfce..110ce0a 100644
--- a/cpus.c
+++ b/cpus.c
@@ -1293,6 +1293,10 @@ static void prepare_icount_for_run(CPUState *cpu)
         insns_left = MIN(0xffff, cpu->icount_budget);
         cpu->icount_decr.u16.low = insns_left;
         cpu->icount_extra = cpu->icount_budget - insns_left;
+
+        if (replay_mode != REPLAY_MODE_NONE) {
+            replay_mutex_lock();
+        }
     }
 }
 
@@ -1308,6 +1312,10 @@ static void process_icount_data(CPUState *cpu)
         cpu->icount_budget = 0;
 
         replay_account_executed_instructions();
+
+        if (replay_mode != REPLAY_MODE_NONE) {
+            replay_mutex_unlock();
+        }
     }
 }
 
@@ -1395,6 +1403,10 @@ static void *qemu_tcg_rr_cpu_thread_fn(void *arg)
 
     while (1) {
 
+        if (replay_mode != REPLAY_MODE_NONE) {
+            replay_mutex_lock();
+        }
+
         qemu_mutex_lock_iothread();
 
         /* Account partial waits to QEMU_CLOCK_VIRTUAL.  */
@@ -1407,6 +1419,10 @@ static void *qemu_tcg_rr_cpu_thread_fn(void *arg)
 
         qemu_mutex_unlock_iothread();
 
+        if (replay_mode != REPLAY_MODE_NONE) {
+            replay_mutex_unlock();
+        }
+
         if (!cpu) {
             cpu = first_cpu;
         }
@@ -1677,12 +1693,28 @@ void pause_all_vcpus(void)
         cpu_stop_current();
     }
 
+    /* We need to drop the replay_lock so any vCPU threads woken up
+     * can finish their replay tasks
+     */
+    if (replay_mode != REPLAY_MODE_NONE) {
+        g_assert(replay_mutex_locked());
+        qemu_mutex_unlock_iothread();
+        replay_mutex_unlock();
+        qemu_mutex_lock_iothread();
+    }
+
     while (!all_vcpus_paused()) {
         qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex);
         CPU_FOREACH(cpu) {
             qemu_cpu_kick(cpu);
         }
     }
+
+    if (replay_mode != REPLAY_MODE_NONE) {
+        qemu_mutex_unlock_iothread();
+        replay_mutex_lock();
+        qemu_mutex_lock_iothread();
+    }
 }
 
 void cpu_resume(CPUState *cpu)
diff --git a/docs/replay.txt b/docs/replay.txt
index c52407f..994153e 100644
--- a/docs/replay.txt
+++ b/docs/replay.txt
@@ -49,6 +49,25 @@ Modifications of qemu include:
  * recording/replaying user input (mouse and keyboard)
  * adding internal checkpoints for cpu and io synchronization
 
+Locking and thread synchronisation
+----------------------------------
+
+Previously the synchronisation of the main thread and the vCPU thread
+was ensured by the holding of the BQL. However the trend has been to
+reduce the time the BQL was held across the system including under TCG
+system emulation. As it is important that batches of events are kept
+in sequence (e.g. expiring timers and checkpoints in the main thread
+while instruction checkpoints are written by the vCPU thread) we need
+another lock to keep things in lock-step. This role is now handled by
+the replay_mutex_lock. It used to be held only for each event being
+written but now it is held for a whole execution period. This results
+in a deterministic ping-pong between the two main threads.
+
+As deadlocks are easy to introduce a new rule is introduced that the
+replay_mutex_lock is taken before any BQL locks. Conversely you cannot
+release the replay_lock while the BQL is still held.
+
+
 Non-deterministic events
 ------------------------
 
diff --git a/include/sysemu/replay.h b/include/sysemu/replay.h
index 9973849..d026b28 100644
--- a/include/sysemu/replay.h
+++ b/include/sysemu/replay.h
@@ -63,6 +63,8 @@ bool replay_mutex_locked(void);
 
 /* Replay process control functions */
 
+/*! Enables and take replay locks (even if we don't use it) */
+void replay_init_locks(void);
 /*! Enables recording or saving event log with specified parameters */
 void replay_configure(struct QemuOpts *opts);
 /*! Initializes timers used for snapshotting and enables events recording */
diff --git a/replay/replay-char.c b/replay/replay-char.c
index cbf7c04..736cc8c 100755
--- a/replay/replay-char.c
+++ b/replay/replay-char.c
@@ -96,25 +96,24 @@ void *replay_event_char_read_load(void)
 
 void replay_char_write_event_save(int res, int offset)
 {
+    g_assert(replay_mutex_locked());
+
     replay_save_instructions();
-    replay_mutex_lock();
     replay_put_event(EVENT_CHAR_WRITE);
     replay_put_dword(res);
     replay_put_dword(offset);
-    replay_mutex_unlock();
 }
 
 void replay_char_write_event_load(int *res, int *offset)
 {
+    g_assert(replay_mutex_locked());
+
     replay_account_executed_instructions();
-    replay_mutex_lock();
     if (replay_next_event_is(EVENT_CHAR_WRITE)) {
         *res = replay_get_dword();
         *offset = replay_get_dword();
         replay_finish_event();
-        replay_mutex_unlock();
     } else {
-        replay_mutex_unlock();
         error_report("Missing character write event in the replay log");
         exit(1);
     }
@@ -122,23 +121,21 @@ void replay_char_write_event_load(int *res, int *offset)
 
 int replay_char_read_all_load(uint8_t *buf)
 {
-    replay_mutex_lock();
+    g_assert(replay_mutex_locked());
+
     if (replay_next_event_is(EVENT_CHAR_READ_ALL)) {
         size_t size;
         int res;
         replay_get_array(buf, &size);
         replay_finish_event();
-        replay_mutex_unlock();
         res = (int)size;
         assert(res >= 0);
         return res;
     } else if (replay_next_event_is(EVENT_CHAR_READ_ALL_ERROR)) {
         int res = replay_get_dword();
         replay_finish_event();
-        replay_mutex_unlock();
         return res;
     } else {
-        replay_mutex_unlock();
         error_report("Missing character read all event in the replay log");
         exit(1);
     }
@@ -146,19 +143,17 @@ int replay_char_read_all_load(uint8_t *buf)
 
 void replay_char_read_all_save_error(int res)
 {
+    g_assert(replay_mutex_locked());
     assert(res < 0);
     replay_save_instructions();
-    replay_mutex_lock();
     replay_put_event(EVENT_CHAR_READ_ALL_ERROR);
     replay_put_dword(res);
-    replay_mutex_unlock();
 }
 
 void replay_char_read_all_save_buf(uint8_t *buf, int offset)
 {
+    g_assert(replay_mutex_locked());
     replay_save_instructions();
-    replay_mutex_lock();
     replay_put_event(EVENT_CHAR_READ_ALL);
     replay_put_array(buf, offset);
-    replay_mutex_unlock();
 }
diff --git a/replay/replay-events.c b/replay/replay-events.c
index e858254..a941efb 100644
--- a/replay/replay-events.c
+++ b/replay/replay-events.c
@@ -79,16 +79,14 @@ bool replay_has_events(void)
 
 void replay_flush_events(void)
 {
-    replay_mutex_lock();
+    g_assert(replay_mutex_locked());
+
     while (!QTAILQ_EMPTY(&events_list)) {
         Event *event = QTAILQ_FIRST(&events_list);
-        replay_mutex_unlock();
         replay_run_event(event);
-        replay_mutex_lock();
         QTAILQ_REMOVE(&events_list, event, events);
         g_free(event);
     }
-    replay_mutex_unlock();
 }
 
 void replay_disable_events(void)
@@ -102,14 +100,14 @@ void replay_disable_events(void)
 
 void replay_clear_events(void)
 {
-    replay_mutex_lock();
+    g_assert(replay_mutex_locked());
+
     while (!QTAILQ_EMPTY(&events_list)) {
         Event *event = QTAILQ_FIRST(&events_list);
         QTAILQ_REMOVE(&events_list, event, events);
 
         g_free(event);
     }
-    replay_mutex_unlock();
 }
 
 /*! Adds specified async event to the queue */
@@ -136,9 +134,8 @@ void replay_add_event(ReplayAsyncEventKind event_kind,
     event->opaque2 = opaque2;
     event->id = id;
 
-    replay_mutex_lock();
+    g_assert(replay_mutex_locked());
     QTAILQ_INSERT_TAIL(&events_list, event, events);
-    replay_mutex_unlock();
 }
 
 void replay_bh_schedule_event(QEMUBH *bh)
@@ -210,10 +207,7 @@ void replay_save_events(int checkpoint)
     while (!QTAILQ_EMPTY(&events_list)) {
         Event *event = QTAILQ_FIRST(&events_list);
         replay_save_event(event, checkpoint);
-
-        replay_mutex_unlock();
         replay_run_event(event);
-        replay_mutex_lock();
         QTAILQ_REMOVE(&events_list, event, events);
         g_free(event);
     }
@@ -299,9 +293,7 @@ void replay_read_events(int checkpoint)
         }
         replay_finish_event();
         read_event_kind = -1;
-        replay_mutex_unlock();
         replay_run_event(event);
-        replay_mutex_lock();
 
         g_free(event);
     }
diff --git a/replay/replay-internal.c b/replay/replay-internal.c
index e6b2fdb..d036a02 100644
--- a/replay/replay-internal.c
+++ b/replay/replay-internal.c
@@ -174,11 +174,6 @@ void replay_mutex_init(void)
     qemu_mutex_init(&lock);
 }
 
-void replay_mutex_destroy(void)
-{
-    qemu_mutex_destroy(&lock);
-}
-
 static __thread bool replay_locked;
 
 bool replay_mutex_locked(void)
@@ -186,15 +181,28 @@ bool replay_mutex_locked(void)
     return replay_locked;
 }
 
+void replay_mutex_destroy(void)
+{
+    if (replay_mutex_locked()) {
+        qemu_mutex_unlock(&lock);
+    }
+    qemu_mutex_destroy(&lock);
+}
+
+
+/* Ordering constraints, replay_lock must be taken before BQL */
 void replay_mutex_lock(void)
 {
+    g_assert(!qemu_mutex_iothread_locked());
     g_assert(!replay_mutex_locked());
     qemu_mutex_lock(&lock);
     replay_locked = true;
 }
 
+/* BQL can't be held when releasing the replay_lock */
 void replay_mutex_unlock(void)
 {
+    g_assert(!qemu_mutex_iothread_locked());
     g_assert(replay_mutex_locked());
     replay_locked = false;
     qemu_mutex_unlock(&lock);
diff --git a/replay/replay-time.c b/replay/replay-time.c
index f70382a..6a7565e 100644
--- a/replay/replay-time.c
+++ b/replay/replay-time.c
@@ -17,13 +17,13 @@
 
 int64_t replay_save_clock(ReplayClockKind kind, int64_t clock)
 {
-    replay_save_instructions();
 
     if (replay_file) {
-        replay_mutex_lock();
+        g_assert(replay_mutex_locked());
+
+        replay_save_instructions();
         replay_put_event(EVENT_CLOCK + kind);
         replay_put_qword(clock);
-        replay_mutex_unlock();
     }
 
     return clock;
@@ -46,16 +46,16 @@ void replay_read_next_clock(ReplayClockKind kind)
 /*! Reads next clock event from the input. */
 int64_t replay_read_clock(ReplayClockKind kind)
 {
+    g_assert(replay_file && replay_mutex_locked());
+
     replay_account_executed_instructions();
 
     if (replay_file) {
         int64_t ret;
-        replay_mutex_lock();
         if (replay_next_event_is(EVENT_CLOCK + kind)) {
             replay_read_next_clock(kind);
         }
         ret = replay_state.cached_clock[kind];
-        replay_mutex_unlock();
 
         return ret;
     }
diff --git a/replay/replay.c b/replay/replay.c
index 4f24498..7fc50ea 100644
--- a/replay/replay.c
+++ b/replay/replay.c
@@ -80,8 +80,9 @@ int replay_get_instructions(void)
 
 void replay_account_executed_instructions(void)
 {
+    g_assert(replay_mutex_locked());
+
     if (replay_mode == REPLAY_MODE_PLAY) {
-        replay_mutex_lock();
         if (replay_state.instructions_count > 0) {
             int count = (int)(replay_get_current_step()
                               - replay_state.current_step);
@@ -100,24 +101,22 @@ void replay_account_executed_instructions(void)
                 qemu_notify_event();
             }
         }
-        replay_mutex_unlock();
     }
 }
 
 bool replay_exception(void)
 {
+
     if (replay_mode == REPLAY_MODE_RECORD) {
+        g_assert(replay_mutex_locked());
         replay_save_instructions();
-        replay_mutex_lock();
         replay_put_event(EVENT_EXCEPTION);
-        replay_mutex_unlock();
         return true;
     } else if (replay_mode == REPLAY_MODE_PLAY) {
+        g_assert(replay_mutex_locked());
         bool res = replay_has_exception();
         if (res) {
-            replay_mutex_lock();
             replay_finish_event();
-            replay_mutex_unlock();
         }
         return res;
     }
@@ -129,10 +128,9 @@ bool replay_has_exception(void)
 {
     bool res = false;
     if (replay_mode == REPLAY_MODE_PLAY) {
+        g_assert(replay_mutex_locked());
         replay_account_executed_instructions();
-        replay_mutex_lock();
         res = replay_next_event_is(EVENT_EXCEPTION);
-        replay_mutex_unlock();
     }
 
     return res;
@@ -141,17 +139,15 @@ bool replay_has_exception(void)
 bool replay_interrupt(void)
 {
     if (replay_mode == REPLAY_MODE_RECORD) {
+        g_assert(replay_mutex_locked());
         replay_save_instructions();
-        replay_mutex_lock();
         replay_put_event(EVENT_INTERRUPT);
-        replay_mutex_unlock();
         return true;
     } else if (replay_mode == REPLAY_MODE_PLAY) {
+        g_assert(replay_mutex_locked());
         bool res = replay_has_interrupt();
         if (res) {
-            replay_mutex_lock();
             replay_finish_event();
-            replay_mutex_unlock();
         }
         return res;
     }
@@ -163,10 +159,9 @@ bool replay_has_interrupt(void)
 {
     bool res = false;
     if (replay_mode == REPLAY_MODE_PLAY) {
+        g_assert(replay_mutex_locked());
         replay_account_executed_instructions();
-        replay_mutex_lock();
         res = replay_next_event_is(EVENT_INTERRUPT);
-        replay_mutex_unlock();
     }
     return res;
 }
@@ -174,9 +169,8 @@ bool replay_has_interrupt(void)
 void replay_shutdown_request(ShutdownCause cause)
 {
     if (replay_mode == REPLAY_MODE_RECORD) {
-        replay_mutex_lock();
+        g_assert(replay_mutex_locked());
         replay_put_event(EVENT_SHUTDOWN + cause);
-        replay_mutex_unlock();
     }
 }
 
@@ -190,9 +184,9 @@ bool replay_checkpoint(ReplayCheckpoint checkpoint)
         return true;
     }
 
-    replay_mutex_lock();
 
     if (replay_mode == REPLAY_MODE_PLAY) {
+        g_assert(replay_mutex_locked());
         if (replay_next_event_is(EVENT_CHECKPOINT + checkpoint)) {
             replay_finish_event();
         } else if (replay_state.data_kind != EVENT_ASYNC) {
@@ -205,15 +199,21 @@ bool replay_checkpoint(ReplayCheckpoint checkpoint)
            checkpoint were processed */
         res = replay_state.data_kind != EVENT_ASYNC;
     } else if (replay_mode == REPLAY_MODE_RECORD) {
+        g_assert(replay_mutex_locked());
         replay_put_event(EVENT_CHECKPOINT + checkpoint);
         replay_save_events(checkpoint);
         res = true;
     }
 out:
-    replay_mutex_unlock();
     return res;
 }
 
+void replay_init_locks(void)
+{
+    replay_mutex_init();
+    replay_mutex_lock(); /* Hold while we start-up */
+}
+
 static void replay_enable(const char *fname, int mode)
 {
     const char *fmode = NULL;
@@ -233,8 +233,6 @@ static void replay_enable(const char *fname, int mode)
 
     atexit(replay_finish);
 
-    replay_mutex_init();
-
     replay_file = fopen(fname, fmode);
     if (replay_file == NULL) {
         fprintf(stderr, "Replay: open %s: %s\n", fname, strerror(errno));
@@ -274,6 +272,8 @@ void replay_configure(QemuOpts *opts)
     Location loc;
 
     if (!opts) {
+        /* we no longer need this lock */
+        replay_mutex_destroy();
         return;
     }
 
diff --git a/util/main-loop.c b/util/main-loop.c
index 7558eb5..7c5b163 100644
--- a/util/main-loop.c
+++ b/util/main-loop.c
@@ -29,6 +29,7 @@
 #include "qemu/sockets.h"	// struct in_addr needed for libslirp.h
 #include "sysemu/qtest.h"
 #include "sysemu/cpus.h"
+#include "sysemu/replay.h"
 #include "slirp/libslirp.h"
 #include "qemu/main-loop.h"
 #include "block/aio.h"
@@ -245,19 +246,26 @@ static int os_host_main_loop_wait(int64_t timeout)
         timeout = SCALE_MS;
     }
 
+
     if (timeout) {
         spin_counter = 0;
-        qemu_mutex_unlock_iothread();
     } else {
         spin_counter++;
     }
+    qemu_mutex_unlock_iothread();
+
+    if (replay_mode != REPLAY_MODE_NONE) {
+        replay_mutex_unlock();
+    }
 
     ret = qemu_poll_ns((GPollFD *)gpollfds->data, gpollfds->len, timeout);
 
-    if (timeout) {
-        qemu_mutex_lock_iothread();
+    if (replay_mode != REPLAY_MODE_NONE) {
+        replay_mutex_lock();
     }
 
+    qemu_mutex_lock_iothread();
+
     glib_pollfds_poll();
 
     g_main_context_release(context);
@@ -463,8 +471,17 @@ static int os_host_main_loop_wait(int64_t timeout)
     poll_timeout_ns = qemu_soonest_timeout(poll_timeout_ns, timeout);
 
     qemu_mutex_unlock_iothread();
+
+    if (replay_mode != REPLAY_MODE_NONE) {
+        replay_mutex_unlock();
+    }
+
     g_poll_ret = qemu_poll_ns(poll_fds, n_poll_fds + w->num, poll_timeout_ns);
 
+    if (replay_mode != REPLAY_MODE_NONE) {
+        replay_mutex_lock();
+    }
+
     qemu_mutex_lock_iothread();
     if (g_poll_ret > 0) {
         for (i = 0; i < w->num; i++) {
diff --git a/vl.c b/vl.c
index a8e0d03..77fc1ef 100644
--- a/vl.c
+++ b/vl.c
@@ -3137,6 +3137,8 @@ int main(int argc, char **argv, char **envp)
 
     qemu_init_cpu_list();
     qemu_init_cpu_loop();
+
+    replay_init_locks();
     qemu_mutex_lock_iothread();
 
     atexit(qemu_run_exit_notifiers);

[Qemu-devel] [RFC PATCH 18/26] cpu-exec: don't overwrite exception_index

[Pavel Dovgalyuk]

This patch adds a condition before overwriting exception_index fiels.
It is needed when exception_index is already set to some meaningful value.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 accel/tcg/cpu-exec.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
index 4318441..35d0240 100644
--- a/accel/tcg/cpu-exec.c
+++ b/accel/tcg/cpu-exec.c
@@ -585,7 +585,9 @@ static inline bool cpu_handle_interrupt(CPUState *cpu,
     if (unlikely(atomic_read(&cpu->exit_request)
         || (use_icount && cpu->icount_decr.u16.low + cpu->icount_extra == 0))) {
         atomic_set(&cpu->exit_request, 0);
-        cpu->exception_index = EXCP_INTERRUPT;
+        if (cpu->exception_index == -1) {
+            cpu->exception_index = EXCP_INTERRUPT;
+        }
         return true;
     }
 

[Qemu-devel] [RFC PATCH 19/26] cpu-exec: reset exit flag before calling cpu_exec_nocache

[Pavel Dovgalyuk]

This patch resets icount_decr.u32.high before calling cpu_exec_nocache
when exception is pending. Exception is caused by the first instruction
in the block and it cannot be executed without resetting the flag.

Signed-off-by: Maria Klimushenkova <maria.klimushenkova@ispras.ru>
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 accel/tcg/cpu-exec.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
index 35d0240..aaa9c2d 100644
--- a/accel/tcg/cpu-exec.c
+++ b/accel/tcg/cpu-exec.c
@@ -500,6 +500,7 @@ static inline bool cpu_handle_exception(CPUState *cpu, int *ret)
     } else if (replay_has_exception()
                && cpu->icount_decr.u16.low + cpu->icount_extra == 0) {
         /* try to cause an exception pending in the log */
+        atomic_set(&cpu->icount_decr.u16.high, 0);
         cpu_exec_nocache(cpu, 1, tb_find(cpu, NULL, 0, curr_cflags()), true);
         *ret = -1;
         return true;

[Qemu-devel] [RFC PATCH 20/26] replay: don't destroy mutex at exit

[Pavel Dovgalyuk]

Replay mutex is held by vCPU thread and destroy function is called
from atexit of the main thread. Therefore we cannot destroy it safely.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 replay/replay.c |    1 -
 1 file changed, 1 deletion(-)

diff --git a/replay/replay.c b/replay/replay.c
index 7fc50ea..3f431ad 100644
--- a/replay/replay.c
+++ b/replay/replay.c
@@ -358,7 +358,6 @@ void replay_finish(void)
     replay_snapshot = NULL;
 
     replay_finish_events();
-    replay_mutex_destroy();
 }
 
 void replay_add_blocker(Error *reason)

[Qemu-devel] [RFC PATCH 21/26] replay: check return values of fwrite

[Pavel Dovgalyuk]

This patch adds error reporting when fwrite cannot completely
save the buffer to the file.

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 replay/replay-internal.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/replay/replay-internal.c b/replay/replay-internal.c
index d036a02..0f73fdc 100644
--- a/replay/replay-internal.c
+++ b/replay/replay-internal.c
@@ -62,7 +62,9 @@ void replay_put_array(const uint8_t *buf, size_t size)
 {
     if (replay_file) {
         replay_put_dword(size);
-        fwrite(buf, 1, size, replay_file);
+        if (fwrite(buf, 1, size, replay_file) != size) {
+            error_report("replay write error");
+        }
     }
 }
 

[Qemu-devel] [RFC PATCH 22/26] scripts/qemu-gdb: add simple tcg lock status helper

[Pavel Dovgalyuk]

From: Alex Bennée <alex.bennee@linaro.org>

Add a simple helper to dump lock state.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

---
 scripts/qemu-gdb.py    |    3 ++-
 scripts/qemugdb/tcg.py |   46 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 48 insertions(+), 1 deletion(-)
 create mode 100644 scripts/qemugdb/tcg.py

diff --git a/scripts/qemu-gdb.py b/scripts/qemu-gdb.py
index b3f8e04..d58213e 100644
--- a/scripts/qemu-gdb.py
+++ b/scripts/qemu-gdb.py
@@ -26,7 +26,7 @@ import os, sys
 
 sys.path.append(os.path.dirname(__file__))
 
-from qemugdb import aio, mtree, coroutine
+from qemugdb import aio, mtree, coroutine, tcg
 
 class QemuCommand(gdb.Command):
     '''Prefix for QEMU debug support commands'''
@@ -38,6 +38,7 @@ QemuCommand()
 coroutine.CoroutineCommand()
 mtree.MtreeCommand()
 aio.HandlersCommand()
+tcg.TCGLockStatusCommand()
 
 coroutine.CoroutineSPFunction()
 coroutine.CoroutinePCFunction()
diff --git a/scripts/qemugdb/tcg.py b/scripts/qemugdb/tcg.py
new file mode 100644
index 0000000..8c7f1d7
--- /dev/null
+++ b/scripts/qemugdb/tcg.py
@@ -0,0 +1,46 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+#
+# GDB debugging support, TCG status
+#
+# Copyright 2016 Linaro Ltd
+#
+# Authors:
+#  Alex Bennée <alex.bennee@linaro.org>
+#
+# This work is licensed under the terms of the GNU GPL, version 2.  See
+# the COPYING file in the top-level directory.
+#
+# Contributions after 2012-01-13 are licensed under the terms of the
+# GNU GPL, version 2 or (at your option) any later version.
+
+# 'qemu tcg-lock-status' -- display the TCG lock status across threads
+
+import gdb
+
+class TCGLockStatusCommand(gdb.Command):
+    '''Display TCG Execution Status'''
+    def __init__(self):
+        gdb.Command.__init__(self, 'qemu tcg-lock-status', gdb.COMMAND_DATA,
+                             gdb.COMPLETE_NONE)
+
+    def invoke(self, arg, from_tty):
+        gdb.write("Thread, BQL (iothread_mutex), Replay, Blocked?\n")
+        for thread in gdb.inferiors()[0].threads():
+            thread.switch()
+
+            iothread = gdb.parse_and_eval("iothread_locked")
+            replay = gdb.parse_and_eval("replay_locked")
+
+            frame = gdb.selected_frame()
+            if frame.name() == "__lll_lock_wait":
+                frame.older().select()
+                mutex = gdb.parse_and_eval("mutex")
+                owner = gdb.parse_and_eval("mutex->__data.__owner")
+                blocked = ("__lll_lock_wait waiting on %s from %d" %
+                           (mutex, owner))
+            else:
+                blocked = "not blocked"
+
+            gdb.write("%d/%d, %s, %s, %s\n" % (thread.num, thread.ptid[1],
+                                               iothread, replay, blocked))

[Qemu-devel] [RFC PATCH 23/26] util/qemu-thread-*: add qemu_lock, locked and unlock trace events

[Pavel Dovgalyuk]

From: Alex Bennée <alex.bennee@linaro.org>

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

---
v1
  - fix merge conflicts with existing tracing
  - add trylock/cond_wait traces

---
 include/qemu/thread.h    |   14 ++++++++++----
 util/qemu-thread-posix.c |   21 ++++++++++++---------
 util/trace-events        |    7 ++++---
 3 files changed, 26 insertions(+), 16 deletions(-)

diff --git a/include/qemu/thread.h b/include/qemu/thread.h
index 9910f49..c51a7f1 100644
--- a/include/qemu/thread.h
+++ b/include/qemu/thread.h
@@ -22,9 +22,13 @@ typedef struct QemuThread QemuThread;
 
 void qemu_mutex_init(QemuMutex *mutex);
 void qemu_mutex_destroy(QemuMutex *mutex);
-void qemu_mutex_lock(QemuMutex *mutex);
-int qemu_mutex_trylock(QemuMutex *mutex);
-void qemu_mutex_unlock(QemuMutex *mutex);
+int qemu_mutex_trylock_impl(QemuMutex *mutex, const char *file, const int line);
+void qemu_mutex_lock_impl(QemuMutex *mutex, const char *file, const int line);
+void qemu_mutex_unlock_impl(QemuMutex *mutex, const char *file, const int line);
+
+#define qemu_mutex_lock(mutex) qemu_mutex_lock_impl(mutex, __FILE__, __LINE__)
+#define qemu_mutex_trylock(mutex) qemu_mutex_trylock_impl(mutex, __FILE__, __LINE__)
+#define qemu_mutex_unlock(mutex) qemu_mutex_unlock_impl(mutex, __FILE__, __LINE__)
 
 /* Prototypes for other functions are in thread-posix.h/thread-win32.h.  */
 void qemu_rec_mutex_init(QemuRecMutex *mutex);
@@ -39,7 +43,9 @@ void qemu_cond_destroy(QemuCond *cond);
  */
 void qemu_cond_signal(QemuCond *cond);
 void qemu_cond_broadcast(QemuCond *cond);
-void qemu_cond_wait(QemuCond *cond, QemuMutex *mutex);
+void qemu_cond_wait_impl(QemuCond *cond, QemuMutex *mutex, const char *file, const int line);
+
+#define qemu_cond_wait(cond, mutex) qemu_cond_wait_impl(cond, mutex, __FILE__, __LINE__)
 
 void qemu_sem_init(QemuSemaphore *sem, int init);
 void qemu_sem_post(QemuSemaphore *sem);
diff --git a/util/qemu-thread-posix.c b/util/qemu-thread-posix.c
index 7306475..1a838a9 100644
--- a/util/qemu-thread-posix.c
+++ b/util/qemu-thread-posix.c
@@ -57,26 +57,28 @@ void qemu_mutex_destroy(QemuMutex *mutex)
         error_exit(err, __func__);
 }
 
-void qemu_mutex_lock(QemuMutex *mutex)
+void qemu_mutex_lock_impl(QemuMutex *mutex, const char *file, const int line)
 {
     int err;
 
     assert(mutex->initialized);
+    trace_qemu_mutex_lock(mutex, file, line);
+
     err = pthread_mutex_lock(&mutex->lock);
     if (err)
         error_exit(err, __func__);
 
-    trace_qemu_mutex_locked(mutex);
+    trace_qemu_mutex_locked(mutex, file, line);
 }
 
-int qemu_mutex_trylock(QemuMutex *mutex)
+int qemu_mutex_trylock_impl(QemuMutex *mutex, const char *file, const int line)
 {
     int err;
 
     assert(mutex->initialized);
     err = pthread_mutex_trylock(&mutex->lock);
     if (err == 0) {
-        trace_qemu_mutex_locked(mutex);
+        trace_qemu_mutex_locked(mutex, file, line);
         return 0;
     }
     if (err != EBUSY) {
@@ -85,15 +87,16 @@ int qemu_mutex_trylock(QemuMutex *mutex)
     return -EBUSY;
 }
 
-void qemu_mutex_unlock(QemuMutex *mutex)
+void qemu_mutex_unlock_impl(QemuMutex *mutex, const char *file, const int line)
 {
     int err;
 
     assert(mutex->initialized);
-    trace_qemu_mutex_unlocked(mutex);
     err = pthread_mutex_unlock(&mutex->lock);
     if (err)
         error_exit(err, __func__);
+
+    trace_qemu_mutex_unlock(mutex, file, line);
 }
 
 void qemu_rec_mutex_init(QemuRecMutex *mutex)
@@ -152,14 +155,14 @@ void qemu_cond_broadcast(QemuCond *cond)
         error_exit(err, __func__);
 }
 
-void qemu_cond_wait(QemuCond *cond, QemuMutex *mutex)
+void qemu_cond_wait_impl(QemuCond *cond, QemuMutex *mutex, const char *file, const int line)
 {
     int err;
 
     assert(cond->initialized);
-    trace_qemu_mutex_unlocked(mutex);
+    trace_qemu_mutex_unlock(mutex, file, line);
     err = pthread_cond_wait(&cond->cond, &mutex->lock);
-    trace_qemu_mutex_locked(mutex);
+    trace_qemu_mutex_locked(mutex, file, line);
     if (err)
         error_exit(err, __func__);
 }
diff --git a/util/trace-events b/util/trace-events
index 025499f..515e625 100644
--- a/util/trace-events
+++ b/util/trace-events
@@ -56,6 +56,7 @@ lockcnt_futex_wait(const void *lockcnt, int val) "lockcnt %p waiting on %d"
 lockcnt_futex_wait_resume(const void *lockcnt, int new) "lockcnt %p after wait: %d"
 lockcnt_futex_wake(const void *lockcnt) "lockcnt %p waking up one waiter"
 
-# util/qemu-thread-posix.c
-qemu_mutex_locked(void *lock) "locked mutex %p"
-qemu_mutex_unlocked(void *lock) "unlocked mutex %p"
+# util/qemu-thread.c
+qemu_mutex_lock(void *mutex, const char *file, const int line) "waiting on mutex %p (%s:%d)"
+qemu_mutex_locked(void *mutex, const char *file, const int line) "taken mutex %p (%s:%d)"
+qemu_mutex_unlock(void *mutex, const char *file, const int line) "released mutex %p (%s:%d)"

[Qemu-devel] [RFC PATCH 24/26] scripts/analyse-locks-simpletrace.py: script to analyse lock times

[Pavel Dovgalyuk]

From: Alex Bennée <alex.bennee@linaro.org>

This script allows analysis of mutex acquisition and hold times based
on a trace file. Given a trace control file of:

  qemu_mutex_lock
  qemu_mutex_locked
  qemu_mutex_unlock

And running with:

  $QEMU $QEMU_ARGS -trace events=./lock-trace

You can analyse the results with:

  ./scripts/analyse-locks-simpletrace.py trace-events-all ./trace-21812

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

---
 scripts/analyse-locks-simpletrace.py |   99 ++++++++++++++++++++++++++++++++++
 1 file changed, 99 insertions(+)
 create mode 100755 scripts/analyse-locks-simpletrace.py

diff --git a/scripts/analyse-locks-simpletrace.py b/scripts/analyse-locks-simpletrace.py
new file mode 100755
index 0000000..b72c951
--- /dev/null
+++ b/scripts/analyse-locks-simpletrace.py
@@ -0,0 +1,99 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# Analyse lock events and
+#
+# Author: Alex Bennée <alex.bennee@linaro.org>
+#
+
+import os
+import simpletrace
+import argparse
+import numpy as np
+
+class MutexAnalyser(simpletrace.Analyzer):
+    "A simpletrace Analyser for checking locks."
+
+    def __init__(self):
+        self.locks = 0
+        self.locked = 0
+        self.unlocks = 0
+        self.mutex_records = {}
+
+    def _get_mutex(self, mutex):
+        if not mutex in self.mutex_records:
+            self.mutex_records[mutex] = {"locks": 0,
+                                         "lock_time": 0,
+                                         "acquire_times": [],
+                                         "locked": 0,
+                                         "locked_time": 0,
+                                         "held_times": [],
+                                         "unlocked": 0}
+
+        return self.mutex_records[mutex]
+
+    def qemu_mutex_lock(self, timestamp, mutex, filename, line):
+        self.locks += 1
+        rec = self._get_mutex(mutex)
+        rec["locks"] += 1
+        rec["lock_time"] = timestamp[0]
+        rec["lock_loc"] = (filename, line)
+
+    def qemu_mutex_locked(self, timestamp, mutex, filename, line):
+        self.locked += 1
+        rec = self._get_mutex(mutex)
+        rec["locked"] += 1
+        rec["locked_time"] = timestamp[0]
+        acquire_time = rec["locked_time"] - rec["lock_time"]
+        rec["locked_loc"] = (filename, line)
+        rec["acquire_times"].append(acquire_time)
+
+    def qemu_mutex_unlock(self, timestamp, mutex, filename, line):
+        self.unlocks += 1
+        rec = self._get_mutex(mutex)
+        rec["unlocked"] += 1
+        held_time = timestamp[0] - rec["locked_time"]
+        rec["held_times"].append(held_time)
+        rec["unlock_loc"] = (filename, line)
+
+
+def get_args():
+    "Grab options"
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--output", "-o", type=str, help="Render plot to file")
+    parser.add_argument("events", type=str, help='trace file read from')
+    parser.add_argument("tracefile", type=str, help='trace file read from')
+    return parser.parse_args()
+
+if __name__ == '__main__':
+    args = get_args()
+
+    # Gather data from the trace
+    analyser = MutexAnalyser()
+    simpletrace.process(args.events, args.tracefile, analyser)
+
+    print ("Total locks: %d, locked: %d, unlocked: %d" %
+           (analyser.locks, analyser.locked, analyser.unlocks))
+
+    # Now dump the individual lock stats
+    for key, val in sorted(analyser.mutex_records.iteritems(),
+                           key=lambda (k,v): v["locks"]):
+        print ("Lock: %#x locks: %d, locked: %d, unlocked: %d" %
+               (key, val["locks"], val["locked"], val["unlocked"]))
+
+        acquire_times = np.array(val["acquire_times"])
+        if len(acquire_times) > 0:
+            print ("  Acquire Time: min:%d median:%d avg:%.2f max:%d" %
+                   (acquire_times.min(), np.median(acquire_times),
+                    acquire_times.mean(), acquire_times.max()))
+
+        held_times = np.array(val["held_times"])
+        if len(held_times) > 0:
+            print ("  Held Time: min:%d median:%d avg:%.2f max:%d" %
+                   (held_times.min(), np.median(held_times),
+                    held_times.mean(), held_times.max()))
+
+        # Check if any locks still held
+        if val["locks"] > val["locked"]:
+            print ("  LOCK HELD (%s:%s)" % (val["locked_loc"]))
+            print ("  BLOCKED   (%s:%s)" % (val["lock_loc"]))

[Qemu-devel] [RFC PATCH 25/26] scripts/replay-dump.py: replay log dumper

[Pavel Dovgalyuk]

From: Alex Bennée <alex.bennee@linaro.org>

This script is a debugging tool for looking through the contents of a
replay log file. It is incomplete but should fail gracefully at events
it doesn't understand.

It currently understands two different log formats as the audio
record/replay support was merged during since MTTCG. It was written to
help debug what has caused the BQL changes to break replay support.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

---
v2
  - yet another update to the log format

---
 scripts/replay-dump.py |  308 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 308 insertions(+)
 create mode 100755 scripts/replay-dump.py

diff --git a/scripts/replay-dump.py b/scripts/replay-dump.py
new file mode 100755
index 0000000..203bb31
--- /dev/null
+++ b/scripts/replay-dump.py
@@ -0,0 +1,308 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+# Dump the contents of a recorded execution stream
+#
+#  Copyright (c) 2017 Alex Bennée <alex.bennee@linaro.org>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, see <http://www.gnu.org/licenses/>.
+
+import argparse
+import struct
+from collections import namedtuple
+
+# This mirrors some of the global replay state which some of the
+# stream loading refers to. Some decoders may read the next event so
+# we need handle that case. Calling reuse_event will ensure the next
+# event is read from the cache rather than advancing the file.
+
+class ReplayState(object):
+    def __init__(self):
+        self.event = -1
+        self.event_count = 0
+        self.already_read = False
+        self.current_checkpoint = 0
+        self.checkpoint = 0
+
+    def set_event(self, ev):
+        self.event = ev
+        self.event_count += 1
+
+    def get_event(self):
+        self.already_read = False
+        return self.event
+
+    def reuse_event(self, ev):
+        self.event = ev
+        self.already_read = True
+
+    def set_checkpoint(self):
+        self.checkpoint = self.event - self.checkpoint_start
+
+    def get_checkpoint(self):
+        return self.checkpoint
+
+replay_state = ReplayState()
+
+# Simple read functions that mirror replay-internal.c
+# The file-stream is big-endian and manually written out a byte at a time.
+
+def read_byte(fin):
+    "Read a single byte"
+    return struct.unpack('>B', fin.read(1))[0]
+
+def read_event(fin):
+    "Read a single byte event, but save some state"
+    if replay_state.already_read:
+        return replay_state.get_event()
+    else:
+        replay_state.set_event(read_byte(fin))
+        return replay_state.event
+
+def read_word(fin):
+    "Read a 16 bit word"
+    return struct.unpack('>H', fin.read(2))[0]
+
+def read_dword(fin):
+    "Read a 32 bit word"
+    return struct.unpack('>I', fin.read(4))[0]
+
+def read_qword(fin):
+    "Read a 64 bit word"
+    return struct.unpack('>Q', fin.read(8))[0]
+
+# Generic decoder structure
+Decoder = namedtuple("Decoder", "eid name fn")
+
+def call_decode(table, index, dumpfile):
+    "Search decode table for next step"
+    decoder = next((d for d in table if d.eid == index), None)
+    if not decoder:
+        print "Could not decode index: %d" % (index)
+        print "Entry is: %s" % (decoder)
+        print "Decode Table is:\n%s" % (table)
+        return False
+    else:
+        return decoder.fn(decoder.eid, decoder.name, dumpfile)
+
+# Print event
+def print_event(eid, name, string=None, event_count=None):
+    "Print event with count"
+    if not event_count:
+        event_count = replay_state.event_count
+
+    if string:
+        print "%d:%s(%d) %s" % (event_count, name, eid, string)
+    else:
+        print "%d:%s(%d)" % (event_count, name, eid)
+
+
+# Decoders for each event type
+
+def decode_unimp(eid, name, _unused_dumpfile):
+    "Unimplimented decoder, will trigger exit"
+    print "%s not handled - will now stop" % (name)
+    return False
+
+# Checkpoint decoder
+def swallow_async_qword(eid, name, dumpfile):
+    "Swallow a qword of data without looking at it"
+    step_id = read_qword(dumpfile)
+    print "  %s(%d) @ %d" % (name, eid, step_id)
+    return True
+
+async_decode_table = [ Decoder(0, "REPLAY_ASYNC_EVENT_BH", swallow_async_qword),
+                       Decoder(1, "REPLAY_ASYNC_INPUT", decode_unimp),
+                       Decoder(2, "REPLAY_ASYNC_INPUT_SYNC", decode_unimp),
+                       Decoder(3, "REPLAY_ASYNC_CHAR_READ", decode_unimp),
+                       Decoder(4, "REPLAY_ASYNC_EVENT_BLOCK", decode_unimp),
+                       Decoder(5, "REPLAY_ASYNC_EVENT_NET", decode_unimp),
+]
+# See replay_read_events/replay_read_event
+def decode_async(eid, name, dumpfile):
+    """Decode an ASYNC event"""
+
+    print_event(eid, name)
+
+    async_event_kind = read_byte(dumpfile)
+    async_event_checkpoint = read_byte(dumpfile)
+
+    if async_event_checkpoint != replay_state.current_checkpoint:
+        print "  mismatch between checkpoint %d and async data %d" % (
+            replay_state.current_checkpoint, async_event_checkpoint)
+        return True
+
+    return call_decode(async_decode_table, async_event_kind, dumpfile)
+
+
+def decode_instruction(eid, name, dumpfile):
+    ins_diff = read_dword(dumpfile)
+    print_event(eid, name, "0x%x" % (ins_diff))
+    return True
+
+def decode_audio_out(eid, name, dumpfile):
+    audio_data = read_dword(dumpfile)
+    print_event(eid, name, "%d" % (audio_data))
+    return True
+
+def decode_checkpoint(eid, name, dumpfile):
+    """Decode a checkpoint.
+
+    Checkpoints contain a series of async events with their own specific data.
+    """
+    replay_state.set_checkpoint()
+    # save event count as we peek ahead
+    event_number = replay_state.event_count
+    next_event = read_event(dumpfile)
+
+    # if the next event is EVENT_ASYNC there are a bunch of
+    # async events to read, otherwise we are done
+    if next_event != 3:
+        print_event(eid, name, "no additional data", event_number)
+    else:
+        print_event(eid, name, "more data follows", event_number)
+
+    replay_state.reuse_event(next_event)
+    return True
+
+def decode_checkpoint_init(eid, name, dumpfile):
+    print_event(eid, name)
+    return True
+
+def decode_interrupt(eid, name, dumpfile):
+    print_event(eid, name)
+    return True
+
+def decode_clock(eid, name, dumpfile):
+    clock_data = read_qword(dumpfile)
+    print_event(eid, name, "0x%x" % (clock_data))
+    return True
+
+
+# pre-MTTCG merge
+v5_event_table = [Decoder(0, "EVENT_INSTRUCTION", decode_instruction),
+                  Decoder(1, "EVENT_INTERRUPT", decode_interrupt),
+                  Decoder(2, "EVENT_EXCEPTION", decode_unimp),
+                  Decoder(3, "EVENT_ASYNC", decode_async),
+                  Decoder(4, "EVENT_SHUTDOWN", decode_unimp),
+                  Decoder(5, "EVENT_CHAR_WRITE", decode_unimp),
+                  Decoder(6, "EVENT_CHAR_READ_ALL", decode_unimp),
+                  Decoder(7, "EVENT_CHAR_READ_ALL_ERROR", decode_unimp),
+                  Decoder(8, "EVENT_CLOCK_HOST", decode_clock),
+                  Decoder(9, "EVENT_CLOCK_VIRTUAL_RT", decode_clock),
+                  Decoder(10, "EVENT_CP_CLOCK_WARP_START", decode_checkpoint),
+                  Decoder(11, "EVENT_CP_CLOCK_WARP_ACCOUNT", decode_checkpoint),
+                  Decoder(12, "EVENT_CP_RESET_REQUESTED", decode_checkpoint),
+                  Decoder(13, "EVENT_CP_SUSPEND_REQUESTED", decode_checkpoint),
+                  Decoder(14, "EVENT_CP_CLOCK_VIRTUAL", decode_checkpoint),
+                  Decoder(15, "EVENT_CP_CLOCK_HOST", decode_checkpoint),
+                  Decoder(16, "EVENT_CP_CLOCK_VIRTUAL_RT", decode_checkpoint),
+                  Decoder(17, "EVENT_CP_INIT", decode_checkpoint_init),
+                  Decoder(18, "EVENT_CP_RESET", decode_checkpoint),
+]
+
+# post-MTTCG merge, AUDIO support added
+v6_event_table = [Decoder(0, "EVENT_INSTRUCTION", decode_instruction),
+                  Decoder(1, "EVENT_INTERRUPT", decode_interrupt),
+                  Decoder(2, "EVENT_EXCEPTION", decode_unimp),
+                  Decoder(3, "EVENT_ASYNC", decode_async),
+                  Decoder(4, "EVENT_SHUTDOWN", decode_unimp),
+                  Decoder(5, "EVENT_CHAR_WRITE", decode_unimp),
+                  Decoder(6, "EVENT_CHAR_READ_ALL", decode_unimp),
+                  Decoder(7, "EVENT_CHAR_READ_ALL_ERROR", decode_unimp),
+                  Decoder(8, "EVENT_AUDIO_OUT", decode_audio_out),
+                  Decoder(9, "EVENT_AUDIO_IN", decode_unimp),
+                  Decoder(10, "EVENT_CLOCK_HOST", decode_clock),
+                  Decoder(11, "EVENT_CLOCK_VIRTUAL_RT", decode_clock),
+                  Decoder(12, "EVENT_CP_CLOCK_WARP_START", decode_checkpoint),
+                  Decoder(13, "EVENT_CP_CLOCK_WARP_ACCOUNT", decode_checkpoint),
+                  Decoder(14, "EVENT_CP_RESET_REQUESTED", decode_checkpoint),
+                  Decoder(15, "EVENT_CP_SUSPEND_REQUESTED", decode_checkpoint),
+                  Decoder(16, "EVENT_CP_CLOCK_VIRTUAL", decode_checkpoint),
+                  Decoder(17, "EVENT_CP_CLOCK_HOST", decode_checkpoint),
+                  Decoder(18, "EVENT_CP_CLOCK_VIRTUAL_RT", decode_checkpoint),
+                  Decoder(19, "EVENT_CP_INIT", decode_checkpoint_init),
+                  Decoder(20, "EVENT_CP_RESET", decode_checkpoint),
+]
+
+# Shutdown cause added
+v7_event_table = [Decoder(0, "EVENT_INSTRUCTION", decode_instruction),
+                  Decoder(1, "EVENT_INTERRUPT", decode_interrupt),
+                  Decoder(2, "EVENT_EXCEPTION", decode_unimp),
+                  Decoder(3, "EVENT_ASYNC", decode_async),
+                  Decoder(4, "EVENT_SHUTDOWN", decode_unimp),
+                  Decoder(5, "EVENT_SHUTDOWN_HOST_ERR", decode_unimp),
+                  Decoder(6, "EVENT_SHUTDOWN_HOST_QMP", decode_unimp),
+                  Decoder(7, "EVENT_SHUTDOWN_HOST_SIGNAL", decode_unimp),
+                  Decoder(8, "EVENT_SHUTDOWN_HOST_UI", decode_unimp),
+                  Decoder(9, "EVENT_SHUTDOWN_GUEST_SHUTDOWN", decode_unimp),
+                  Decoder(10, "EVENT_SHUTDOWN_GUEST_RESET", decode_unimp),
+                  Decoder(11, "EVENT_SHUTDOWN_GUEST_PANIC", decode_unimp),
+                  Decoder(12, "EVENT_SHUTDOWN___MAX", decode_unimp),
+                  Decoder(13, "EVENT_CHAR_WRITE", decode_unimp),
+                  Decoder(14, "EVENT_CHAR_READ_ALL", decode_unimp),
+                  Decoder(15, "EVENT_CHAR_READ_ALL_ERROR", decode_unimp),
+                  Decoder(16, "EVENT_AUDIO_OUT", decode_audio_out),
+                  Decoder(17, "EVENT_AUDIO_IN", decode_unimp),
+                  Decoder(18, "EVENT_CLOCK_HOST", decode_clock),
+                  Decoder(19, "EVENT_CLOCK_VIRTUAL_RT", decode_clock),
+                  Decoder(20, "EVENT_CP_CLOCK_WARP_START", decode_checkpoint),
+                  Decoder(21, "EVENT_CP_CLOCK_WARP_ACCOUNT", decode_checkpoint),
+                  Decoder(22, "EVENT_CP_RESET_REQUESTED", decode_checkpoint),
+                  Decoder(23, "EVENT_CP_SUSPEND_REQUESTED", decode_checkpoint),
+                  Decoder(24, "EVENT_CP_CLOCK_VIRTUAL", decode_checkpoint),
+                  Decoder(25, "EVENT_CP_CLOCK_HOST", decode_checkpoint),
+                  Decoder(26, "EVENT_CP_CLOCK_VIRTUAL_RT", decode_checkpoint),
+                  Decoder(27, "EVENT_CP_INIT", decode_checkpoint_init),
+                  Decoder(28, "EVENT_CP_RESET", decode_checkpoint),
+]
+
+def parse_arguments():
+    "Grab arguments for script"
+    parser = argparse.ArgumentParser()
+    parser.add_argument("-f", "--file", help='record/replay dump to read from',
+                        required=True)
+    return parser.parse_args()
+
+def decode_file(filename):
+    "Decode a record/replay dump"
+    dumpfile = open(filename, "rb")
+
+    # read and throwaway the header
+    version = read_dword(dumpfile)
+    junk = read_qword(dumpfile)
+
+    print "HEADER: version 0x%x" % (version)
+
+    if version == 0xe02007:
+        event_decode_table = v7_event_table
+        replay_state.checkpoint_start = 12
+    elif version == 0xe02006:
+        event_decode_table = v6_event_table
+        replay_state.checkpoint_start = 12
+    else:
+        event_decode_table = v5_event_table
+        replay_state.checkpoint_start = 10
+
+    try:
+        decode_ok = True
+        while decode_ok:
+            event = read_event(dumpfile)
+            decode_ok = call_decode(event_decode_table, event, dumpfile)
+    finally:
+        dumpfile.close()
+
+if __name__ == "__main__":
+    args = parse_arguments()
+    decode_file(args.file)

[Qemu-devel] [RFC PATCH 26/26] scripts/qemu-gdb/timers.py: new helper to dump timer state

[Pavel Dovgalyuk]

From: Alex Bennée <alex.bennee@linaro.org>

This introduces the qemu-gdb command "qemu timers" which will dump the
state of the main timers in the system.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

---
 scripts/qemu-gdb.py       |    3 ++-
 scripts/qemugdb/timers.py |   54 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+), 1 deletion(-)
 create mode 100644 scripts/qemugdb/timers.py

diff --git a/scripts/qemu-gdb.py b/scripts/qemu-gdb.py
index d58213e..690827e 100644
--- a/scripts/qemu-gdb.py
+++ b/scripts/qemu-gdb.py
@@ -26,7 +26,7 @@ import os, sys
 
 sys.path.append(os.path.dirname(__file__))
 
-from qemugdb import aio, mtree, coroutine, tcg
+from qemugdb import aio, mtree, coroutine, tcg, timers
 
 class QemuCommand(gdb.Command):
     '''Prefix for QEMU debug support commands'''
@@ -39,6 +39,7 @@ coroutine.CoroutineCommand()
 mtree.MtreeCommand()
 aio.HandlersCommand()
 tcg.TCGLockStatusCommand()
+timers.TimersCommand()
 
 coroutine.CoroutineSPFunction()
 coroutine.CoroutinePCFunction()
diff --git a/scripts/qemugdb/timers.py b/scripts/qemugdb/timers.py
new file mode 100644
index 0000000..be71a00
--- /dev/null
+++ b/scripts/qemugdb/timers.py
@@ -0,0 +1,54 @@
+#!/usr/bin/python
+# GDB debugging support
+#
+# Copyright 2017 Linaro Ltd
+#
+# Author: Alex Bennée <alex.bennee@linaro.org>
+#
+# This work is licensed under the terms of the GNU GPL, version 2.  See
+# the COPYING file in the top-level directory.
+
+# 'qemu timers' -- display the current timerlists
+
+import gdb
+
+class TimersCommand(gdb.Command):
+    '''Display the current QEMU timers'''
+
+    def __init__(self):
+        'Register the class as a gdb command'
+        gdb.Command.__init__(self, 'qemu timers', gdb.COMMAND_DATA,
+                             gdb.COMPLETE_NONE)
+
+    def dump_timers(self, timer):
+        "Follow a timer and recursively dump each one in the list."
+        # timer should be of type QemuTimer
+        gdb.write("    timer %s/%s (cb:%s,opq:%s)\n" % (
+            timer['expire_time'],
+            timer['scale'],
+            timer['cb'],
+            timer['opaque']))
+
+        if int(timer['next']) > 0:
+            self.dump_timers(timer['next'])
+
+
+    def process_timerlist(self, tlist, ttype):
+        gdb.write("Processing %s timers\n" % (ttype))
+        gdb.write("  clock %s is enabled:%s, last:%s\n" % (
+            tlist['clock']['type'],
+            tlist['clock']['enabled'],
+            tlist['clock']['last']))
+        if int(tlist['active_timers']) > 0:
+            self.dump_timers(tlist['active_timers'])
+
+
+    def invoke(self, arg, from_tty):
+        'Run the command'
+        main_timers = gdb.parse_and_eval("main_loop_tlg")
+
+        # This will break if QEMUClockType in timer.h is redfined
+        self.process_timerlist(main_timers['tl'][0], "Realtime")
+        self.process_timerlist(main_timers['tl'][1], "Virtual")
+        self.process_timerlist(main_timers['tl'][2], "Host")
+        self.process_timerlist(main_timers['tl'][3], "Virtual RT")

Re: [Qemu-devel] [RFC PATCH 00/26] replay additions

[no-reply]

Hi,

This series seems to have some coding style problems. See output below for
more information:

Subject: [Qemu-devel] [RFC PATCH 00/26] replay additions
Type: series
Message-id: 20171031112457.10516.8971.stgit@pasha-VirtualBox

=== TEST SCRIPT BEGIN ===
#!/bin/bash

BASE=base
n=1
total=$(git log --oneline $BASE.. | wc -l)
failed=0

git config --local diff.renamelimit 0
git config --local diff.renames True

commits="$(git log --format=%H --reverse $BASE..)"
for c in $commits; do
    echo "Checking PATCH $n/$total: $(git log -n 1 --format=%s $c)..."
    if ! git show $c --format=email | ./scripts/checkpatch.pl --mailback -; then
        failed=1
        echo
    fi
    n=$((n+1))
done

exit $failed
=== TEST SCRIPT END ===

Updating 3c8cf5a9c21ff8782164d1def7f44bd888713384
From https://github.com/patchew-project/qemu
 * [new tag]               patchew/20171031154407.4184-1-michael.nawrocki@gtri.gatech.edu -> patchew/20171031154407.4184-1-michael.nawrocki@gtri.gatech.edu
 * [new tag]               patchew/20171031155435.4618-1-michael.nawrocki@gtri.gatech.edu -> patchew/20171031155435.4618-1-michael.nawrocki@gtri.gatech.edu
Switched to a new branch 'test'
20d0b17232 scripts/qemu-gdb/timers.py: new helper to dump timer state
64421a4f52 scripts/replay-dump.py: replay log dumper
700ca82a54 scripts/analyse-locks-simpletrace.py: script to analyse lock times
809c77a69b util/qemu-thread-*: add qemu_lock, locked and unlock trace events
1c8e6e0cfb scripts/qemu-gdb: add simple tcg lock status helper
75eda61076 replay: check return values of fwrite
4bf82dfcd4 replay: don't destroy mutex at exit
d0c3f4f989 cpu-exec: reset exit flag before calling cpu_exec_nocache
3b3054a617 cpu-exec: don't overwrite exception_index
362d866789 replay: push replay_mutex_lock up the call tree
9a3dd0433a replay: make locking visible outside replay code
d52a8fc2ff replay/replay-internal.c: track holding of replay_lock
3ca13ccdaf replay/replay.c: bump REPLAY_VERSION again
5538b997a4 cpus: only take BQL for sleeping threads
937a1af99a cpus: push BQL lock to qemu_*_wait_io_event
ee006ece2f target/arm/arm-powertctl: drop BQL assertions
04a87d3a23 icount: fixed saving/restoring of icount warp timers
de234114a4 replay: save prior value of the host clock
20fc2a4788 replay: make safe vmstop at record/replay
1a2355af98 replay: added replay log format description
0f5ab37dfc replay: fix save/load vm for non-empty queue
200b9b8b38 replay: fixed replay_enable_events
56dc9c67cd replay: fix processing async events
46418d342b replay: disable default snapshot for record/replay
2dc294f393 blkreplay: create temporary overlay for underlaying devices
5c6e2e0033 block: implement bdrv_snapshot_goto for blkreplay

=== OUTPUT BEGIN ===
Checking PATCH 1/26: block: implement bdrv_snapshot_goto for blkreplay...
Checking PATCH 2/26: blkreplay: create temporary overlay for underlaying devices...
Checking PATCH 3/26: replay: disable default snapshot for record/replay...
Checking PATCH 4/26: replay: fix processing async events...
Checking PATCH 5/26: replay: fixed replay_enable_events...
Checking PATCH 6/26: replay: fix save/load vm for non-empty queue...
ERROR: Error messages should not contain newlines
#60: FILE: migration/savevm.c:2322:
+                     "right now. Try once more later.\n");

total: 1 errors, 0 warnings, 48 lines checked

Your patch has style problems, please review.  If any of these errors
are false positives report them to the maintainer, see
CHECKPATCH in MAINTAINERS.

Checking PATCH 7/26: replay: added replay log format description...
Checking PATCH 8/26: replay: make safe vmstop at record/replay...
ERROR: Error messages should not contain newlines
#45: FILE: migration/savevm.c:2147:
+                     "right now. Try once more later.\n");

total: 1 errors, 0 warnings, 23 lines checked

Your patch has style problems, please review.  If any of these errors
are false positives report them to the maintainer, see
CHECKPATCH in MAINTAINERS.

Checking PATCH 9/26: replay: save prior value of the host clock...
Checking PATCH 10/26: icount: fixed saving/restoring of icount warp timers...
ERROR: spaces required around that '*' (ctx:VxV)
#171: FILE: cpus.c:688:
+    .subsections = (const VMStateDescription*[]) {
                                             ^

total: 1 errors, 0 warnings, 174 lines checked

Your patch has style problems, please review.  If any of these errors
are false positives report them to the maintainer, see
CHECKPATCH in MAINTAINERS.

Checking PATCH 11/26: target/arm/arm-powertctl: drop BQL assertions...
Checking PATCH 12/26: cpus: push BQL lock to qemu_*_wait_io_event...
Checking PATCH 13/26: cpus: only take BQL for sleeping threads...
Checking PATCH 14/26: replay/replay.c: bump REPLAY_VERSION again...
Checking PATCH 15/26: replay/replay-internal.c: track holding of replay_lock...
Checking PATCH 16/26: replay: make locking visible outside replay code...
Checking PATCH 17/26: replay: push replay_mutex_lock up the call tree...
Checking PATCH 18/26: cpu-exec: don't overwrite exception_index...
Checking PATCH 19/26: cpu-exec: reset exit flag before calling cpu_exec_nocache...
Checking PATCH 20/26: replay: don't destroy mutex at exit...
Checking PATCH 21/26: replay: check return values of fwrite...
Checking PATCH 22/26: scripts/qemu-gdb: add simple tcg lock status helper...
Checking PATCH 23/26: util/qemu-thread-*: add qemu_lock, locked and unlock trace events...
WARNING: line over 80 characters
#30: FILE: include/qemu/thread.h:30:
+#define qemu_mutex_trylock(mutex) qemu_mutex_trylock_impl(mutex, __FILE__, __LINE__)

WARNING: line over 80 characters
#31: FILE: include/qemu/thread.h:31:
+#define qemu_mutex_unlock(mutex) qemu_mutex_unlock_impl(mutex, __FILE__, __LINE__)

ERROR: line over 90 characters
#40: FILE: include/qemu/thread.h:46:
+void qemu_cond_wait_impl(QemuCond *cond, QemuMutex *mutex, const char *file, const int line);

WARNING: line over 80 characters
#42: FILE: include/qemu/thread.h:48:
+#define qemu_cond_wait(cond, mutex) qemu_cond_wait_impl(cond, mutex, __FILE__, __LINE__)

ERROR: line over 90 characters
#107: FILE: util/qemu-thread-posix.c:158:
+void qemu_cond_wait_impl(QemuCond *cond, QemuMutex *mutex, const char *file, const int line)

total: 2 errors, 3 warnings, 103 lines checked

Your patch has style problems, please review.  If any of these errors
are false positives report them to the maintainer, see
CHECKPATCH in MAINTAINERS.

Checking PATCH 24/26: scripts/analyse-locks-simpletrace.py: script to analyse lock times...
Checking PATCH 25/26: scripts/replay-dump.py: replay log dumper...
Checking PATCH 26/26: scripts/qemu-gdb/timers.py: new helper to dump timer state...
=== OUTPUT END ===

Test command exited with code: 1


---
Email generated automatically by Patchew [http://patchew.org/].
Please send your feedback to patchew-devel@freelists.org

Re: [Qemu-devel] [RFC PATCH 00/26] replay additions

[no-reply]

Hi,

This series failed automatic build test. Please find the testing commands and
their output below. If you have docker installed, you can probably reproduce it
locally.

Subject: [Qemu-devel] [RFC PATCH 00/26] replay additions
Type: series
Message-id: 20171031112457.10516.8971.stgit@pasha-VirtualBox

=== TEST SCRIPT BEGIN ===
#!/bin/bash
set -e
git submodule update --init dtc
# Let docker tests dump environment info
export SHOW_ENV=1
export J=8
time make docker-test-quick@centos6
time make docker-test-build@min-glib
time make docker-test-mingw@fedora
time make docker-test-block@fedora
=== TEST SCRIPT END ===

Updating 3c8cf5a9c21ff8782164d1def7f44bd888713384
Switched to a new branch 'test'
20d0b17232 scripts/qemu-gdb/timers.py: new helper to dump timer state
64421a4f52 scripts/replay-dump.py: replay log dumper
700ca82a54 scripts/analyse-locks-simpletrace.py: script to analyse lock times
809c77a69b util/qemu-thread-*: add qemu_lock, locked and unlock trace events
1c8e6e0cfb scripts/qemu-gdb: add simple tcg lock status helper
75eda61076 replay: check return values of fwrite
4bf82dfcd4 replay: don't destroy mutex at exit
d0c3f4f989 cpu-exec: reset exit flag before calling cpu_exec_nocache
3b3054a617 cpu-exec: don't overwrite exception_index
362d866789 replay: push replay_mutex_lock up the call tree
9a3dd0433a replay: make locking visible outside replay code
d52a8fc2ff replay/replay-internal.c: track holding of replay_lock
3ca13ccdaf replay/replay.c: bump REPLAY_VERSION again
5538b997a4 cpus: only take BQL for sleeping threads
937a1af99a cpus: push BQL lock to qemu_*_wait_io_event
ee006ece2f target/arm/arm-powertctl: drop BQL assertions
04a87d3a23 icount: fixed saving/restoring of icount warp timers
de234114a4 replay: save prior value of the host clock
20fc2a4788 replay: make safe vmstop at record/replay
1a2355af98 replay: added replay log format description
0f5ab37dfc replay: fix save/load vm for non-empty queue
200b9b8b38 replay: fixed replay_enable_events
56dc9c67cd replay: fix processing async events
46418d342b replay: disable default snapshot for record/replay
2dc294f393 blkreplay: create temporary overlay for underlaying devices
5c6e2e0033 block: implement bdrv_snapshot_goto for blkreplay

=== OUTPUT BEGIN ===
Submodule 'dtc' (git://git.qemu-project.org/dtc.git) registered for path 'dtc'
Cloning into '/var/tmp/patchew-tester-tmp-g_i2minb/src/dtc'...
Submodule path 'dtc': checked out '558cd81bdd432769b59bff01240c44f82cfb1a9d'
  BUILD   centos6
make[1]: Entering directory '/var/tmp/patchew-tester-tmp-g_i2minb/src'
  GEN     /var/tmp/patchew-tester-tmp-g_i2minb/src/docker-src.2017-10-31-14.21.13.18423/qemu.tar
Cloning into '/var/tmp/patchew-tester-tmp-g_i2minb/src/docker-src.2017-10-31-14.21.13.18423/qemu.tar.vroot'...
done.
Checking out files:  17% (975/5658)   
Checking out files:  18% (1019/5658)   
Checking out files:  19% (1076/5658)   
Checking out files:  20% (1132/5658)   
Checking out files:  21% (1189/5658)   
Checking out files:  22% (1245/5658)   
Checking out files:  23% (1302/5658)   
Checking out files:  24% (1358/5658)   
Checking out files:  25% (1415/5658)   
Checking out files:  26% (1472/5658)   
Checking out files:  27% (1528/5658)   
Checking out files:  28% (1585/5658)   
Checking out files:  29% (1641/5658)   
Checking out files:  30% (1698/5658)   
Checking out files:  31% (1754/5658)   
Checking out files:  32% (1811/5658)   
Checking out files:  33% (1868/5658)   
Checking out files:  34% (1924/5658)   
Checking out files:  35% (1981/5658)   
Checking out files:  36% (2037/5658)   
Checking out files:  37% (2094/5658)   
Checking out files:  38% (2151/5658)   
Checking out files:  39% (2207/5658)   
Checking out files:  40% (2264/5658)   
Checking out files:  41% (2320/5658)   
Checking out files:  42% (2377/5658)   
Checking out files:  43% (2433/5658)   
Checking out files:  44% (2490/5658)   
Checking out files:  45% (2547/5658)   
Checking out files:  46% (2603/5658)   
Checking out files:  47% (2660/5658)   
Checking out files:  48% (2716/5658)   
Checking out files:  49% (2773/5658)   
Checking out files:  50% (2829/5658)   
Checking out files:  51% (2886/5658)   
Checking out files:  52% (2943/5658)   
Checking out files:  53% (2999/5658)   
Checking out files:  54% (3056/5658)   
Checking out files:  55% (3112/5658)   
Checking out files:  56% (3169/5658)   
Checking out files:  56% (3182/5658)   
Checking out files:  57% (3226/5658)   
Checking out files:  58% (3282/5658)   
Checking out files:  59% (3339/5658)   
Checking out files:  60% (3395/5658)   
Checking out files:  61% (3452/5658)   
Checking out files:  62% (3508/5658)   
Checking out files:  63% (3565/5658)   
Checking out files:  64% (3622/5658)   
Checking out files:  65% (3678/5658)   
Checking out files:  66% (3735/5658)   
Checking out files:  67% (3791/5658)   
Checking out files:  68% (3848/5658)   
Checking out files:  69% (3905/5658)   
Checking out files:  70% (3961/5658)   
Checking out files:  71% (4018/5658)   
Checking out files:  72% (4074/5658)   
Checking out files:  73% (4131/5658)   
Checking out files:  74% (4187/5658)   
Checking out files:  75% (4244/5658)   
Checking out files:  76% (4301/5658)   
Checking out files:  77% (4357/5658)   
Checking out files:  78% (4414/5658)   
Checking out files:  79% (4470/5658)   
Checking out files:  80% (4527/5658)   
Checking out files:  81% (4583/5658)   
Checking out files:  82% (4640/5658)   
Checking out files:  83% (4697/5658)   
Checking out files:  84% (4753/5658)   
Checking out files:  85% (4810/5658)   
Checking out files:  86% (4866/5658)   
Checking out files:  87% (4923/5658)   
Checking out files:  88% (4980/5658)   
Checking out files:  89% (5036/5658)   
Checking out files:  90% (5093/5658)   
Checking out files:  91% (5149/5658)   
Checking out files:  92% (5206/5658)   
Checking out files:  93% (5262/5658)   
Checking out files:  94% (5319/5658)   
Checking out files:  95% (5376/5658)   
Checking out files:  96% (5432/5658)   
Checking out files:  97% (5489/5658)   
Checking out files:  98% (5545/5658)   
Checking out files:  99% (5602/5658)   
Checking out files: 100% (5658/5658)   
Checking out files: 100% (5658/5658), done.
Your branch is up-to-date with 'origin/test'.
Submodule 'dtc' (git://git.qemu-project.org/dtc.git) registered for path 'dtc'
Cloning into '/var/tmp/patchew-tester-tmp-g_i2minb/src/docker-src.2017-10-31-14.21.13.18423/qemu.tar.vroot/dtc'...
Submodule path 'dtc': checked out '558cd81bdd432769b59bff01240c44f82cfb1a9d'
Submodule 'ui/keycodemapdb' (git://git.qemu.org/keycodemapdb.git) registered for path 'ui/keycodemapdb'
Cloning into '/var/tmp/patchew-tester-tmp-g_i2minb/src/docker-src.2017-10-31-14.21.13.18423/qemu.tar.vroot/ui/keycodemapdb'...
Submodule path 'ui/keycodemapdb': checked out '10739aa26051a5d49d88132604539d3ed085e72e'
  COPY    RUNNER
    RUN test-quick in qemu:centos6 
Packages installed:
SDL-devel-1.2.14-7.el6_7.1.x86_64
bison-2.4.1-5.el6.x86_64
bzip2-devel-1.0.5-7.el6_0.x86_64
ccache-3.1.6-2.el6.x86_64
csnappy-devel-0-6.20150729gitd7bc683.el6.x86_64
flex-2.5.35-9.el6.x86_64
gcc-4.4.7-18.el6.x86_64
gettext-0.17-18.el6.x86_64
git-1.7.1-9.el6_9.x86_64
glib2-devel-2.28.8-9.el6.x86_64
libepoxy-devel-1.2-3.el6.x86_64
libfdt-devel-1.4.0-1.el6.x86_64
librdmacm-devel-1.0.21-0.el6.x86_64
lzo-devel-2.03-3.1.el6_5.1.x86_64
make-3.81-23.el6.x86_64
mesa-libEGL-devel-11.0.7-4.el6.x86_64
mesa-libgbm-devel-11.0.7-4.el6.x86_64
package g++ is not installed
pixman-devel-0.32.8-1.el6.x86_64
spice-glib-devel-0.26-8.el6.x86_64
spice-server-devel-0.12.4-16.el6.x86_64
tar-1.23-15.el6_8.x86_64
vte-devel-0.25.1-9.el6.x86_64
xen-devel-4.6.6-2.el6.x86_64
zlib-devel-1.2.3-29.el6.x86_64

Environment variables:
PACKAGES=bison     bzip2-devel     ccache     csnappy-devel     flex     g++     gcc     gettext     git     glib2-devel     libepoxy-devel     libfdt-devel     librdmacm-devel     lzo-devel     make     mesa-libEGL-devel     mesa-libgbm-devel     pixman-devel     SDL-devel     spice-glib-devel     spice-server-devel     tar     vte-devel     xen-devel     zlib-devel
HOSTNAME=e2e268e22429
MAKEFLAGS= -j8
J=8
CCACHE_DIR=/var/tmp/ccache
EXTRA_CONFIGURE_OPTS=
V=
SHOW_ENV=1
PATH=/usr/lib/ccache:/usr/lib64/ccache:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
PWD=/
TARGET_LIST=
SHLVL=1
HOME=/root
TEST_DIR=/tmp/qemu-test
FEATURES= dtc
DEBUG=
_=/usr/bin/env

Configure options:
--enable-werror --target-list=x86_64-softmmu,aarch64-softmmu --prefix=/tmp/qemu-test/install
No C++ compiler available; disabling C++ specific optional code
Install prefix    /tmp/qemu-test/install
BIOS directory    /tmp/qemu-test/install/share/qemu
firmware path     /tmp/qemu-test/install/share/qemu-firmware
binary directory  /tmp/qemu-test/install/bin
library directory /tmp/qemu-test/install/lib
module directory  /tmp/qemu-test/install/lib/qemu
libexec directory /tmp/qemu-test/install/libexec
include directory /tmp/qemu-test/install/include
config directory  /tmp/qemu-test/install/etc
local state directory   /tmp/qemu-test/install/var
Manual directory  /tmp/qemu-test/install/share/man
ELF interp prefix /usr/gnemul/qemu-%M
Source path       /tmp/qemu-test/src
GIT submodules    
C compiler        cc
Host C compiler   cc
C++ compiler      
Objective-C compiler cc
ARFLAGS           rv
CFLAGS            -O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -g 
QEMU_CFLAGS       -I/usr/include/pixman-1   -I$(SRC_PATH)/dtc/libfdt -pthread -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include   -DNCURSES_WIDECHAR   -fPIE -DPIE -m64 -mcx16 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wall -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv  -Wendif-labels -Wno-missing-include-dirs -Wempty-body -Wnested-externs -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wold-style-declaration -Wold-style-definition -Wtype-limits -fstack-protector-all  -I/usr/include/libpng12   -I/usr/include/libdrm     -I/usr/include/spice-server -I/usr/include/cacard -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/nss3 -I/usr/include/nspr4 -I/usr/include/spice-1  
LDFLAGS           -Wl,--warn-common -Wl,-z,relro -Wl,-z,now -pie -m64 -g 
make              make
install           install
python            python -B
smbd              /usr/sbin/smbd
module support    no
host CPU          x86_64
host big endian   no
target list       x86_64-softmmu aarch64-softmmu
gprof enabled     no
sparse enabled    no
strip binaries    yes
profiler          no
static build      no
SDL support       yes (1.2.14)
GTK support       yes (2.24.23)
GTK GL support    no
VTE support       yes (0.25.1)
TLS priority      NORMAL
GNUTLS support    no
GNUTLS rnd        no
libgcrypt         no
libgcrypt kdf     no
nettle            no 
nettle kdf        no
libtasn1          no
curses support    yes
virgl support     no
curl support      no
mingw32 support   no
Audio drivers     oss
Block whitelist (rw) 
Block whitelist (ro) 
VirtFS support    no
Multipath support no
VNC support       yes
VNC SASL support  no
VNC JPEG support  yes
VNC PNG support   yes
xen support       yes
xen ctrl version  40600
pv dom build      no
brlapi support    no
bluez  support    no
Documentation     no
PIE               yes
vde support       no
netmap support    no
Linux AIO support no
ATTR/XATTR support yes
Install blobs     yes
KVM support       yes
HAX support       no
TCG support       yes
TCG debug enabled no
TCG interpreter   no
RDMA support      yes
fdt support       yes
preadv support    yes
fdatasync         yes
madvise           yes
posix_madvise     yes
libcap-ng support no
vhost-net support yes
vhost-scsi support yes
vhost-vsock support yes
vhost-user support yes
Trace backends    log
spice support     yes (0.12.6/0.12.4)
rbd support       no
xfsctl support    no
smartcard support yes
libusb            no
usb net redir     no
OpenGL support    yes
OpenGL dmabufs    no
libiscsi support  no
libnfs support    no
build guest agent yes
QGA VSS support   no
QGA w32 disk info no
QGA MSI support   no
seccomp support   no
coroutine backend ucontext
coroutine pool    yes
debug stack usage no
crypto afalg      no
GlusterFS support no
gcov              gcov
gcov enabled      no
TPM support       yes
libssh2 support   no
TPM passthrough   yes
TPM emulator      yes
QOM debugging     yes
Live block migration yes
lzo support       yes
snappy support    no
bzip2 support     yes
NUMA host support no
tcmalloc support  no
jemalloc support  no
avx2 optimization no
replication support yes
VxHS block device no
capstone          no
mkdir -p dtc/libfdt
mkdir -p dtc/tests
  GEN     x86_64-softmmu/config-devices.mak.tmp
  GEN     aarch64-softmmu/config-devices.mak.tmp
  GEN     config-host.h
  GEN     qemu-options.def
  GEN     qapi-visit.h
  GEN     qmp-commands.h
  GEN     qapi-types.h
  GEN     qapi-event.h
  GEN     x86_64-softmmu/config-devices.mak
  GEN     qmp-marshal.c
  GEN     aarch64-softmmu/config-devices.mak
  GEN     qapi-types.c
  GEN     qapi-visit.c
  GEN     qapi-event.c
  GEN     qmp-introspect.h
  GEN     qmp-introspect.c
  GEN     trace/generated-tcg-tracers.h
  GEN     trace/generated-helpers-wrappers.h
  GEN     trace/generated-helpers.h
  GEN     trace/generated-helpers.c
  GEN     module_block.h
  GEN     ui/input-keymap-linux-to-qcode.c
  GEN     ui/input-keymap-qcode-to-qnum.c
  GEN     ui/input-keymap-qnum-to-qcode.c
  GEN     tests/test-qapi-types.h
  GEN     tests/test-qapi-visit.h
  GEN     tests/test-qmp-commands.h
  GEN     tests/test-qapi-event.h
  GEN     trace-root.h
  GEN     tests/test-qmp-introspect.h
  GEN     util/trace.h
  GEN     crypto/trace.h
  GEN     io/trace.h
  GEN     migration/trace.h
  GEN     block/trace.h
  GEN     chardev/trace.h
  GEN     hw/block/trace.h
  GEN     hw/block/dataplane/trace.h
  GEN     hw/char/trace.h
  GEN     hw/intc/trace.h
  GEN     hw/net/trace.h
  GEN     hw/audio/trace.h
  GEN     hw/virtio/trace.h
  GEN     hw/misc/trace.h
  GEN     hw/usb/trace.h
  GEN     hw/scsi/trace.h
  GEN     hw/nvram/trace.h
  GEN     hw/display/trace.h
  GEN     hw/input/trace.h
  GEN     hw/timer/trace.h
  GEN     hw/dma/trace.h
  GEN     hw/sparc/trace.h
  GEN     hw/sd/trace.h
  GEN     hw/isa/trace.h
  GEN     hw/mem/trace.h
  GEN     hw/i386/trace.h
  GEN     hw/i386/xen/trace.h
  GEN     hw/9pfs/trace.h
  GEN     hw/ppc/trace.h
  GEN     hw/pci/trace.h
  GEN     hw/s390x/trace.h
  GEN     hw/vfio/trace.h
  GEN     hw/acpi/trace.h
  GEN     hw/arm/trace.h
  GEN     hw/alpha/trace.h
  GEN     hw/xen/trace.h
  GEN     hw/ide/trace.h
  GEN     ui/trace.h
  GEN     audio/trace.h
  GEN     net/trace.h
  GEN     target/arm/trace.h
  GEN     target/i386/trace.h
  GEN     target/mips/trace.h
  GEN     target/sparc/trace.h
  GEN     target/s390x/trace.h
  GEN     target/ppc/trace.h
  GEN     qom/trace.h
  GEN     linux-user/trace.h
  GEN     qapi/trace.h
  GEN     accel/tcg/trace.h
  GEN     accel/kvm/trace.h
  GEN     nbd/trace.h
  GEN     scsi/trace.h
  GEN     trace-root.c
  GEN     util/trace.c
  GEN     crypto/trace.c
  GEN     io/trace.c
  GEN     migration/trace.c
  GEN     block/trace.c
  GEN     chardev/trace.c
  GEN     hw/block/trace.c
  GEN     hw/block/dataplane/trace.c
  GEN     hw/char/trace.c
  GEN     hw/intc/trace.c
  GEN     hw/net/trace.c
  GEN     hw/virtio/trace.c
  GEN     hw/audio/trace.c
  GEN     hw/misc/trace.c
  GEN     hw/usb/trace.c
  GEN     hw/scsi/trace.c
  GEN     hw/nvram/trace.c
  GEN     hw/display/trace.c
  GEN     hw/input/trace.c
  GEN     hw/timer/trace.c
  GEN     hw/dma/trace.c
  GEN     hw/sparc/trace.c
  GEN     hw/sd/trace.c
  GEN     hw/isa/trace.c
  GEN     hw/mem/trace.c
  GEN     hw/i386/trace.c
  GEN     hw/i386/xen/trace.c
  GEN     hw/9pfs/trace.c
  GEN     hw/ppc/trace.c
  GEN     hw/pci/trace.c
  GEN     hw/s390x/trace.c
  GEN     hw/vfio/trace.c
  GEN     hw/acpi/trace.c
  GEN     hw/arm/trace.c
  GEN     hw/alpha/trace.c
  GEN     hw/xen/trace.c
  GEN     hw/ide/trace.c
  GEN     ui/trace.c
  GEN     audio/trace.c
  GEN     net/trace.c
  GEN     target/arm/trace.c
  GEN     target/i386/trace.c
  GEN     target/mips/trace.c
  GEN     target/sparc/trace.c
  GEN     target/s390x/trace.c
  GEN     target/ppc/trace.c
  GEN     qom/trace.c
  GEN     linux-user/trace.c
  GEN     qapi/trace.c
  GEN     accel/tcg/trace.c
  GEN     accel/kvm/trace.c
  GEN     nbd/trace.c
  GEN     scsi/trace.c
  GEN     config-all-devices.mak
	 DEP /tmp/qemu-test/src/dtc/tests/dumptrees.c
	 DEP /tmp/qemu-test/src/dtc/tests/trees.S
	 DEP /tmp/qemu-test/src/dtc/tests/testutils.c
	 DEP /tmp/qemu-test/src/dtc/tests/asm_tree_dump.c
	 DEP /tmp/qemu-test/src/dtc/tests/truncated_property.c
	 DEP /tmp/qemu-test/src/dtc/tests/value-labels.c
	 DEP /tmp/qemu-test/src/dtc/tests/check_path.c
	 DEP /tmp/qemu-test/src/dtc/tests/overlay_bad_fixup.c
	 DEP /tmp/qemu-test/src/dtc/tests/overlay.c
	 DEP /tmp/qemu-test/src/dtc/tests/subnode_iterate.c
	 DEP /tmp/qemu-test/src/dtc/tests/property_iterate.c
	 DEP /tmp/qemu-test/src/dtc/tests/integer-expressions.c
	 DEP /tmp/qemu-test/src/dtc/tests/utilfdt_test.c
	 DEP /tmp/qemu-test/src/dtc/tests/path_offset_aliases.c
	 DEP /tmp/qemu-test/src/dtc/tests/dtbs_equal_unordered.c
	 DEP /tmp/qemu-test/src/dtc/tests/add_subnode_with_nops.c
	 DEP /tmp/qemu-test/src/dtc/tests/dtb_reverse.c
	 DEP /tmp/qemu-test/src/dtc/tests/dtbs_equal_ordered.c
	 DEP /tmp/qemu-test/src/dtc/tests/extra-terminating-null.c
	 DEP /tmp/qemu-test/src/dtc/tests/incbin.c
	 DEP /tmp/qemu-test/src/dtc/tests/boot-cpuid.c
	 DEP /tmp/qemu-test/src/dtc/tests/phandle_format.c
	 DEP /tmp/qemu-test/src/dtc/tests/references.c
	 DEP /tmp/qemu-test/src/dtc/tests/string_escapes.c
	 DEP /tmp/qemu-test/src/dtc/tests/path-references.c
	 DEP /tmp/qemu-test/src/dtc/tests/propname_escapes.c
	 DEP /tmp/qemu-test/src/dtc/tests/appendprop2.c
	 DEP /tmp/qemu-test/src/dtc/tests/appendprop1.c
	 DEP /tmp/qemu-test/src/dtc/tests/del_node.c
	 DEP /tmp/qemu-test/src/dtc/tests/del_property.c
	 DEP /tmp/qemu-test/src/dtc/tests/setprop.c
	 DEP /tmp/qemu-test/src/dtc/tests/set_name.c
	 DEP /tmp/qemu-test/src/dtc/tests/rw_tree1.c
	 DEP /tmp/qemu-test/src/dtc/tests/open_pack.c
	 DEP /tmp/qemu-test/src/dtc/tests/nopulate.c
	 DEP /tmp/qemu-test/src/dtc/tests/mangle-layout.c
	 DEP /tmp/qemu-test/src/dtc/tests/move_and_save.c
	 DEP /tmp/qemu-test/src/dtc/tests/sw_tree1.c
	 DEP /tmp/qemu-test/src/dtc/tests/nop_node.c
	 DEP /tmp/qemu-test/src/dtc/tests/nop_property.c
	 DEP /tmp/qemu-test/src/dtc/tests/setprop_inplace.c
	 DEP /tmp/qemu-test/src/dtc/tests/stringlist.c
	 DEP /tmp/qemu-test/src/dtc/tests/addr_size_cells.c
	 DEP /tmp/qemu-test/src/dtc/tests/notfound.c
	 DEP /tmp/qemu-test/src/dtc/tests/sized_cells.c
	 DEP /tmp/qemu-test/src/dtc/tests/char_literal.c
	 DEP /tmp/qemu-test/src/dtc/tests/get_alias.c
	 DEP /tmp/qemu-test/src/dtc/tests/node_offset_by_compatible.c
	 DEP /tmp/qemu-test/src/dtc/tests/node_check_compatible.c
	 DEP /tmp/qemu-test/src/dtc/tests/node_offset_by_phandle.c
	 DEP /tmp/qemu-test/src/dtc/tests/node_offset_by_prop_value.c
	 DEP /tmp/qemu-test/src/dtc/tests/parent_offset.c
	 DEP /tmp/qemu-test/src/dtc/tests/supernode_atdepth_offset.c
	 DEP /tmp/qemu-test/src/dtc/tests/get_path.c
	 DEP /tmp/qemu-test/src/dtc/tests/get_phandle.c
	 DEP /tmp/qemu-test/src/dtc/tests/getprop.c
	 DEP /tmp/qemu-test/src/dtc/tests/get_name.c
	 DEP /tmp/qemu-test/src/dtc/tests/path_offset.c
	 DEP /tmp/qemu-test/src/dtc/tests/subnode_offset.c
	 DEP /tmp/qemu-test/src/dtc/tests/find_property.c
	 DEP /tmp/qemu-test/src/dtc/tests/root_node.c
	 DEP /tmp/qemu-test/src/dtc/tests/get_mem_rsv.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_overlay.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_addresses.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_empty_tree.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_strerror.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_rw.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_sw.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_wip.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_ro.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt.c
	 DEP /tmp/qemu-test/src/dtc/util.c
	 DEP /tmp/qemu-test/src/dtc/fdtput.c
	 DEP /tmp/qemu-test/src/dtc/fdtget.c
	 DEP /tmp/qemu-test/src/dtc/fdtdump.c
	 LEX convert-dtsv0-lexer.lex.c
	 DEP /tmp/qemu-test/src/dtc/srcpos.c
	 BISON dtc-parser.tab.c
	 LEX dtc-lexer.lex.c
	 DEP /tmp/qemu-test/src/dtc/treesource.c
	 DEP /tmp/qemu-test/src/dtc/livetree.c
	 DEP /tmp/qemu-test/src/dtc/fstree.c
	 DEP /tmp/qemu-test/src/dtc/flattree.c
	 DEP /tmp/qemu-test/src/dtc/dtc.c
	 DEP /tmp/qemu-test/src/dtc/data.c
	 DEP /tmp/qemu-test/src/dtc/checks.c
	 DEP convert-dtsv0-lexer.lex.c
	 DEP dtc-parser.tab.c
	 DEP dtc-lexer.lex.c
	CHK version_gen.h
	UPD version_gen.h
	 DEP /tmp/qemu-test/src/dtc/util.c
	 CC libfdt/fdt.o
	 CC libfdt/fdt_ro.o
	 CC libfdt/fdt_wip.o
	 CC libfdt/fdt_rw.o
	 CC libfdt/fdt_sw.o
	 CC libfdt/fdt_strerror.o
	 CC libfdt/fdt_empty_tree.o
	 CC libfdt/fdt_addresses.o
	 CC libfdt/fdt_overlay.o
	 AR libfdt/libfdt.a
ar: creating libfdt/libfdt.a
a - libfdt/fdt.o
a - libfdt/fdt_ro.o
a - libfdt/fdt_wip.o
a - libfdt/fdt_sw.o
a - libfdt/fdt_rw.o
a - libfdt/fdt_strerror.o
a - libfdt/fdt_empty_tree.o
a - libfdt/fdt_addresses.o
a - libfdt/fdt_overlay.o
mkdir -p dtc/libfdt
mkdir -p dtc/tests
  CC      tests/qemu-iotests/socket_scm_helper.o
  GEN     qga/qapi-generated/qga-qapi-types.h
  GEN     qga/qapi-generated/qga-qapi-visit.h
  GEN     qga/qapi-generated/qga-qmp-commands.h
  GEN     qga/qapi-generated/qga-qapi-types.c
  GEN     qga/qapi-generated/qga-qapi-visit.c
  GEN     qga/qapi-generated/qga-qmp-marshal.c
  CC      qmp-introspect.o
  CC      qapi-types.o
  CC      qapi-visit.o
  CC      qapi-event.o
  CC      qapi/qapi-visit-core.o
  CC      qapi/qapi-dealloc-visitor.o
  CC      qapi/qobject-input-visitor.o
  CC      qapi/qobject-output-visitor.o
  CC      qapi/qmp-registry.o
  CC      qapi/qmp-dispatch.o
  CC      qapi/string-input-visitor.o
  CC      qapi/string-output-visitor.o
  CC      qapi/opts-visitor.o
  CC      qapi/qapi-clone-visitor.o
  CC      qapi/qmp-event.o
  CC      qobject/qnull.o
  CC      qobject/qnum.o
  CC      qobject/qstring.o
  CC      qapi/qapi-util.o
  CC      qobject/qdict.o
  CC      qobject/qlist.o
  CC      qobject/qbool.o
  CC      qobject/qlit.o
  CC      qobject/qjson.o
  CC      qobject/qobject.o
  CC      qobject/json-lexer.o
  CC      qobject/json-parser.o
  CC      trace/control.o
  CC      trace/qmp.o
  CC      qobject/json-streamer.o
  CC      util/osdep.o
  CC      util/cutils.o
  CC      util/unicode.o
  CC      util/qemu-timer-common.o
  CC      util/bufferiszero.o
  CC      util/lockcnt.o
  CC      util/aiocb.o
  CC      util/async.o
  CC      util/thread-pool.o
  CC      util/qemu-timer.o
  CC      util/main-loop.o
  CC      util/iohandler.o
  CC      util/compatfd.o
  CC      util/aio-posix.o
  CC      util/event_notifier-posix.o
  CC      util/mmap-alloc.o
  CC      util/oslib-posix.o
  CC      util/qemu-openpty.o
  CC      util/qemu-thread-posix.o
  CC      util/memfd.o
  CC      util/envlist.o
  CC      util/path.o
  CC      util/module.o
  CC      util/host-utils.o
  CC      util/bitops.o
  CC      util/bitmap.o
  CC      util/hbitmap.o
  CC      util/fifo8.o
  CC      util/acl.o
  CC      util/cacheinfo.o
  CC      util/error.o
  CC      util/qemu-error.o
  CC      util/id.o
  CC      util/iov.o
  CC      util/qemu-config.o
  CC      util/qemu-sockets.o
  CC      util/uri.o
  CC      util/notify.o
  CC      util/qemu-option.o
  CC      util/keyval.o
  CC      util/qemu-progress.o
  CC      util/hexdump.o
  CC      util/crc32c.o
  CC      util/uuid.o
  CC      util/throttle.o
  CC      util/getauxval.o
  CC      util/readline.o
  CC      util/rcu.o
  CC      util/qemu-coroutine-lock.o
  CC      util/qemu-coroutine-io.o
  CC      util/qemu-coroutine.o
  CC      util/qemu-coroutine-sleep.o
  CC      util/coroutine-ucontext.o
  CC      util/buffer.o
  CC      util/timed-average.o
  CC      util/base64.o
  CC      util/pagesize.o
  CC      util/qdist.o
  CC      util/qht.o
  CC      util/range.o
  CC      util/log.o
  CC      trace-root.o
  CC      util/systemd.o
  CC      util/stats64.o
  CC      util/trace.o
  CC      crypto/trace.o
  CC      migration/trace.o
  CC      block/trace.o
  CC      io/trace.o
  CC      chardev/trace.o
  CC      hw/block/trace.o
  CC      hw/block/dataplane/trace.o
  CC      hw/char/trace.o
  CC      hw/intc/trace.o
  CC      hw/net/trace.o
  CC      hw/virtio/trace.o
  CC      hw/audio/trace.o
  CC      hw/misc/trace.o
  CC      hw/usb/trace.o
  CC      hw/scsi/trace.o
  CC      hw/display/trace.o
  CC      hw/nvram/trace.o
  CC      hw/input/trace.o
  CC      hw/timer/trace.o
  CC      hw/dma/trace.o
  CC      hw/sparc/trace.o
  CC      hw/sd/trace.o
  CC      hw/isa/trace.o
  CC      hw/mem/trace.o
  CC      hw/i386/trace.o
  CC      hw/i386/xen/trace.o
  CC      hw/9pfs/trace.o
  CC      hw/ppc/trace.o
  CC      hw/pci/trace.o
  CC      hw/s390x/trace.o
  CC      hw/vfio/trace.o
  CC      hw/acpi/trace.o
  CC      hw/arm/trace.o
  CC      hw/alpha/trace.o
  CC      hw/xen/trace.o
  CC      hw/ide/trace.o
  CC      ui/trace.o
  CC      audio/trace.o
  CC      net/trace.o
  CC      target/arm/trace.o
  CC      target/i386/trace.o
  CC      target/mips/trace.o
  CC      target/sparc/trace.o
  CC      target/s390x/trace.o
  CC      target/ppc/trace.o
  CC      qom/trace.o
  CC      linux-user/trace.o
  CC      qapi/trace.o
  CC      accel/kvm/trace.o
  CC      nbd/trace.o
  CC      accel/tcg/trace.o
  CC      scsi/trace.o
  CC      crypto/pbkdf-stub.o
  CC      stubs/arch-query-cpu-def.o
  CC      stubs/arch-query-cpu-model-expansion.o
  CC      stubs/arch-query-cpu-model-comparison.o
  CC      stubs/bdrv-next-monitor-owned.o
  CC      stubs/arch-query-cpu-model-baseline.o
  CC      stubs/blk-commit-all.o
  CC      stubs/blockdev-close-all-bdrv-states.o
  CC      stubs/clock-warp.o
  CC      stubs/cpu-get-clock.o
  CC      stubs/cpu-get-icount.o
  CC      stubs/dump.o
  CC      stubs/error-printf.o
  CC      stubs/fdset.o
  CC      stubs/get-vm-name.o
  CC      stubs/gdbstub.o
  CC      stubs/iothread-lock.o
  CC      stubs/iothread.o
  CC      stubs/is-daemonized.o
  CC      stubs/machine-init-done.o
  CC      stubs/change-state-handler.o
  CC      stubs/migr-blocker.o
  CC      stubs/monitor.o
  CC      stubs/notify-event.o
  CC      stubs/qtest.o
  CC      stubs/replay.o
  CC      stubs/runstate-check.o
  CC      stubs/set-fd-handler.o
  CC      stubs/slirp.o
  CC      stubs/sysbus.o
  CC      stubs/tpm.o
  CC      stubs/trace-control.o
  CC      stubs/uuid.o
  CC      stubs/vm-stop.o
  CC      stubs/vmstate.o
  CC      stubs/qmp_pc_dimm.o
  CC      stubs/target-monitor-defs.o
  CC      stubs/target-get-monitor-def.o
  CC      stubs/pc_madt_cpu_entry.o
  CC      stubs/vmgenid.o
  CC      stubs/xen-common.o
  CC      stubs/xen-hvm.o
  CC      stubs/pci-host-piix.o
  CC      contrib/ivshmem-client/ivshmem-client.o
  CC      contrib/ivshmem-client/main.o
  CC      contrib/ivshmem-server/ivshmem-server.o
  CC      contrib/ivshmem-server/main.o
  CC      qemu-nbd.o
  CC      block.o
  CC      blockjob.o
  CC      qemu-io-cmds.o
  CC      replication.o
  CC      block/raw-format.o
  CC      block/qcow.o
  CC      block/vdi.o
  CC      block/vmdk.o
  CC      block/cloop.o
  CC      block/vvfat.o
  CC      block/dmg.o
  CC      block/bochs.o
  CC      block/vpc.o
  CC      block/qcow2.o
  CC      block/qcow2-refcount.o
  CC      block/qcow2-cluster.o
  CC      block/qcow2-snapshot.o
  CC      block/qcow2-bitmap.o
  CC      block/qed.o
  CC      block/qed-l2-cache.o
  CC      block/qcow2-cache.o
  CC      block/qed-table.o
  CC      block/qed-cluster.o
  CC      block/qed-check.o
  CC      block/vhdx.o
  CC      block/vhdx-endian.o
  CC      block/vhdx-log.o
  CC      block/quorum.o
  CC      block/parallels.o
  CC      block/blkdebug.o
  CC      block/blkverify.o
  CC      block/blkreplay.o
  CC      block/block-backend.o
  CC      block/snapshot.o
  CC      block/qapi.o
  CC      block/file-posix.o
  CC      block/null.o
  CC      block/mirror.o
  CC      block/commit.o
  CC      block/io.o
  CC      block/throttle-groups.o
  CC      block/nbd.o
  CC      block/nbd-client.o
  CC      block/sheepdog.o
  CC      block/accounting.o
  CC      block/dirty-bitmap.o
  CC      block/write-threshold.o
  CC      block/backup.o
  CC      block/replication.o
  CC      block/throttle.o
  CC      block/crypto.o
  CC      nbd/server.o
  CC      nbd/client.o
  CC      nbd/common.o
  CC      scsi/utils.o
  CC      scsi/pr-manager.o
  CC      scsi/pr-manager-helper.o
  CC      block/dmg-bz2.o
  CC      crypto/init.o
  CC      crypto/hash-glib.o
  CC      crypto/hash.o
  CC      crypto/hmac-glib.o
  CC      crypto/desrfb.o
  CC      crypto/hmac.o
  CC      crypto/aes.o
  CC      crypto/tlscreds.o
  CC      crypto/cipher.o
  CC      crypto/tlscredsanon.o
  CC      crypto/tlssession.o
  CC      crypto/secret.o
  CC      crypto/random-platform.o
  CC      crypto/tlscredsx509.o
  CC      crypto/pbkdf.o
  CC      crypto/ivgen.o
  CC      crypto/ivgen-essiv.o
  CC      crypto/ivgen-plain.o
  CC      crypto/ivgen-plain64.o
  CC      crypto/afsplit.o
  CC      crypto/xts.o
  CC      crypto/block.o
  CC      crypto/block-qcow.o
  CC      crypto/block-luks.o
  CC      io/channel.o
  CC      io/channel-buffer.o
  CC      io/channel-command.o
  CC      io/channel-socket.o
  CC      io/channel-tls.o
  CC      io/channel-file.o
  CC      io/channel-watch.o
  CC      io/channel-websock.o
  CC      io/channel-util.o
  CC      io/dns-resolver.o
  CC      io/task.o
  CC      qom/object.o
  CC      qom/container.o
  CC      qom/qom-qobject.o
  CC      qom/object_interfaces.o
  CC      qemu-io.o
  GEN     qemu-img-cmds.h
  CC      scsi/qemu-pr-helper.o
  CC      qemu-bridge-helper.o
  CC      blockdev.o
  CC      blockdev-nbd.o
  CC      bootdevice.o
  CC      iothread.o
  CC      qdev-monitor.o
  CC      device-hotplug.o
  CC      os-posix.o
  CC      bt-host.o
  CC      bt-vhci.o
  CC      dma-helpers.o
  CC      vl.o
  CC      tpm.o
  CC      device_tree.o
  CC      qmp-marshal.o
  CC      qmp.o
  CC      hmp.o
  CC      cpus-common.o
  CC      audio/audio.o
  CC      audio/noaudio.o
  CC      audio/wavaudio.o
  CC      audio/mixeng.o
  CC      audio/sdlaudio.o
  CC      audio/ossaudio.o
  CC      audio/spiceaudio.o
  CC      audio/wavcapture.o
  CC      backends/rng.o
  CC      backends/rng-egd.o
  CC      backends/rng-random.o
  CC      backends/hostmem.o
  CC      backends/tpm.o
  CC      backends/hostmem-ram.o
  CC      backends/hostmem-file.o
  CC      backends/cryptodev.o
  CC      backends/cryptodev-builtin.o
  CC      chardev/msmouse.o
  CC      block/stream.o
  CC      chardev/wctablet.o
  CC      chardev/testdev.o
  CC      chardev/spice.o
  CC      disas/arm.o
  CC      disas/i386.o
  CC      fsdev/qemu-fsdev-dummy.o
  CC      fsdev/qemu-fsdev-throttle.o
  CC      fsdev/qemu-fsdev-opts.o
  CC      hw/acpi/piix4.o
  CC      hw/acpi/core.o
  CC      hw/acpi/pcihp.o
  CC      hw/acpi/ich9.o
  CC      hw/acpi/tco.o
  CC      hw/acpi/cpu_hotplug.o
  CC      hw/acpi/memory_hotplug.o
  CC      hw/acpi/cpu.o
  CC      hw/acpi/nvdimm.o
  CC      hw/acpi/vmgenid.o
  CC      hw/acpi/acpi_interface.o
  CC      hw/acpi/bios-linker-loader.o
  CC      hw/acpi/ipmi.o
  CC      hw/acpi/aml-build.o
  CC      hw/acpi/ipmi-stub.o
  CC      hw/audio/sb16.o
  CC      hw/acpi/acpi-stub.o
  CC      hw/audio/ac97.o
  CC      hw/audio/es1370.o
  CC      hw/audio/fmopl.o
  CC      hw/audio/adlib.o
  CC      hw/audio/gus.o
  CC      hw/audio/gusemu_hal.o
  CC      hw/audio/cs4231a.o
  CC      hw/audio/gusemu_mixer.o
  CC      hw/audio/intel-hda.o
  CC      hw/audio/hda-codec.o
  CC      hw/audio/pl041.o
  CC      hw/audio/pcspk.o
  CC      hw/audio/wm8750.o
  CC      hw/audio/lm4549.o
  CC      hw/audio/marvell_88w8618.o
  CC      hw/audio/soundhw.o
  CC      hw/block/block.o
  CC      hw/block/cdrom.o
  CC      hw/block/hd-geometry.o
  CC      hw/block/m25p80.o
  CC      hw/block/pflash_cfi01.o
  CC      hw/block/nand.o
  CC      hw/block/fdc.o
  CC      hw/block/pflash_cfi02.o
  CC      hw/block/xen_disk.o
  CC      hw/block/onenand.o
  CC      hw/block/nvme.o
  CC      hw/bt/core.o
  CC      hw/bt/sdp.o
  CC      hw/block/ecc.o
  CC      hw/bt/l2cap.o
  CC      hw/bt/hci.o
  CC      hw/bt/hid.o
  CC      hw/bt/hci-csr.o
  CC      hw/char/ipoctal232.o
  CC      hw/char/parallel.o
  CC      hw/char/pl011.o
  CC      hw/char/serial.o
  CC      hw/char/serial-isa.o
  CC      hw/char/serial-pci.o
  CC      hw/char/virtio-console.o
  CC      hw/char/xen_console.o
  CC      hw/char/cadence_uart.o
  CC      hw/char/cmsdk-apb-uart.o
  CC      hw/char/debugcon.o
  CC      hw/char/imx_serial.o
  CC      hw/core/qdev.o
  CC      hw/core/qdev-properties.o
  CC      hw/core/bus.o
  CC      hw/core/fw-path-provider.o
  CC      hw/core/reset.o
  CC      hw/core/hotplug.o
  CC      hw/core/irq.o
  CC      hw/core/nmi.o
  CC      hw/core/ptimer.o
  CC      hw/core/sysbus.o
  CC      hw/core/machine.o
  CC      hw/core/loader.o
  CC      hw/core/qdev-properties-system.o
  CC      hw/core/register.o
  CC      hw/core/or-irq.o
  CC      hw/core/platform-bus.o
  CC      hw/cpu/core.o
  CC      hw/display/ads7846.o
  CC      hw/display/cirrus_vga.o
  CC      hw/display/pl110.o
  CC      hw/display/ssd0323.o
  CC      hw/display/ssd0303.o
  CC      hw/display/xenfb.o
  CC      hw/display/vga-pci.o
  CC      hw/display/vga-isa.o
  CC      hw/display/vmware_vga.o
  CC      hw/display/blizzard.o
  CC      hw/display/exynos4210_fimd.o
  CC      hw/display/framebuffer.o
  CC      hw/display/tc6393xb.o
  CC      hw/display/qxl.o
  CC      hw/display/qxl-logger.o
  CC      hw/display/qxl-render.o
  CC      hw/dma/pl080.o
  CC      hw/dma/pl330.o
  CC      hw/dma/i8257.o
  CC      hw/dma/xlnx-zynq-devcfg.o
  CC      hw/gpio/max7310.o
  CC      hw/gpio/pl061.o
  CC      hw/gpio/zaurus.o
  CC      hw/i2c/core.o
  CC      hw/i2c/smbus.o
  CC      hw/i2c/smbus_eeprom.o
  CC      hw/gpio/gpio_key.o
  CC      hw/i2c/i2c-ddc.o
  CC      hw/i2c/versatile_i2c.o
  CC      hw/i2c/smbus_ich9.o
  CC      hw/i2c/pm_smbus.o
  CC      hw/i2c/bitbang_i2c.o
  CC      hw/i2c/exynos4210_i2c.o
  CC      hw/i2c/imx_i2c.o
  CC      hw/i2c/aspeed_i2c.o
  CC      hw/ide/core.o
  CC      hw/ide/atapi.o
  CC      hw/ide/qdev.o
  CC      hw/ide/pci.o
  CC      hw/ide/isa.o
  CC      hw/ide/piix.o
  CC      hw/ide/microdrive.o
  CC      hw/ide/ahci.o
  CC      hw/ide/ich.o
  CC      hw/input/hid.o
  CC      hw/input/lm832x.o
  CC      hw/input/pckbd.o
  CC      hw/input/pl050.o
  CC      hw/input/ps2.o
  CC      hw/input/stellaris_input.o
  CC      hw/input/tsc2005.o
  CC      hw/input/vmmouse.o
  CC      hw/input/virtio-input.o
  CC      hw/input/virtio-input-hid.o
  CC      hw/input/virtio-input-host.o
  CC      hw/intc/i8259_common.o
  CC      hw/intc/pl190.o
  CC      hw/intc/i8259.o
  CC      hw/intc/imx_avic.o
  CC      hw/intc/realview_gic.o
  CC      hw/intc/ioapic_common.o
  CC      hw/intc/arm_gic_common.o
  CC      hw/intc/arm_gic.o
  CC      hw/intc/arm_gicv2m.o
  CC      hw/intc/arm_gicv3_common.o
  CC      hw/intc/arm_gicv3_dist.o
  CC      hw/intc/arm_gicv3_redist.o
  CC      hw/intc/arm_gicv3_its_common.o
  CC      hw/intc/intc.o
  CC      hw/intc/arm_gicv3.o
  CC      hw/ipack/ipack.o
  CC      hw/ipack/tpci200.o
  CC      hw/ipmi/ipmi.o
  CC      hw/ipmi/ipmi_bmc_sim.o
  CC      hw/ipmi/ipmi_bmc_extern.o
  CC      hw/ipmi/isa_ipmi_kcs.o
  CC      hw/ipmi/isa_ipmi_bt.o
  CC      hw/isa/isa-bus.o
  CC      hw/mem/pc-dimm.o
  CC      hw/isa/apm.o
  CC      hw/mem/nvdimm.o
  CC      hw/misc/applesmc.o
  CC      hw/misc/max111x.o
  CC      hw/misc/tmp105.o
  CC      hw/misc/tmp421.o
  CC      hw/misc/debugexit.o
  CC      hw/misc/pc-testdev.o
  CC      hw/misc/sga.o
  CC      hw/misc/pci-testdev.o
  CC      hw/misc/edu.o
  CC      hw/misc/unimp.o
  CC      hw/misc/vmcoreinfo.o
  CC      hw/misc/arm_l2x0.o
  CC      hw/misc/arm_integrator_debug.o
  CC      hw/misc/a9scu.o
  CC      hw/misc/arm11scu.o
  CC      hw/net/xen_nic.o
  CC      hw/net/ne2000.o
  CC      hw/net/pcnet-pci.o
  CC      hw/net/eepro100.o
  CC      hw/net/pcnet.o
  CC      hw/net/e1000.o
  CC      hw/net/e1000x_common.o
  CC      hw/net/net_tx_pkt.o
  CC      hw/net/net_rx_pkt.o
  CC      hw/net/e1000e.o
  CC      hw/net/e1000e_core.o
  CC      hw/net/rtl8139.o
  CC      hw/net/vmxnet3.o
  CC      hw/net/smc91c111.o
  CC      hw/net/lan9118.o
  CC      hw/net/ne2000-isa.o
  CC      hw/net/xgmac.o
  CC      hw/net/allwinner_emac.o
  CC      hw/net/imx_fec.o
  CC      hw/net/cadence_gem.o
  CC      hw/net/stellaris_enet.o
  CC      hw/net/ftgmac100.o
  CC      hw/net/rocker/rocker.o
  CC      hw/net/rocker/rocker_fp.o
  CC      hw/net/rocker/rocker_world.o
  CC      hw/net/rocker/rocker_of_dpa.o
  CC      hw/net/rocker/rocker_desc.o
  CC      hw/nvram/eeprom93xx.o
  CC      hw/nvram/fw_cfg.o
  CC      hw/nvram/chrp_nvram.o
  CC      hw/pci-bridge/pci_bridge_dev.o
  CC      hw/pci-bridge/pcie_pci_bridge.o
  CC      hw/pci-bridge/pcie_root_port.o
  CC      hw/pci-bridge/gen_pcie_root_port.o
  CC      hw/pci-bridge/pci_expander_bridge.o
  CC      hw/pci-bridge/xio3130_upstream.o
  CC      hw/pci-bridge/xio3130_downstream.o
  CC      hw/pci-bridge/i82801b11.o
  CC      hw/pci-bridge/ioh3420.o
  CC      hw/pci-host/pam.o
  CC      hw/pci-host/versatile.o
  CC      hw/pci-host/piix.o
  CC      hw/pci-host/q35.o
  CC      hw/pci-host/gpex.o
  CC      hw/pci/pci.o
  CC      hw/pci/pci_bridge.o
  CC      hw/pci/msix.o
  CC      hw/pci/msi.o
  CC      hw/pci/shpc.o
  CC      hw/pci/slotid_cap.o
  CC      hw/pci/pci_host.o
  CC      hw/pci/pcie_host.o
  CC      hw/pci/pcie.o
  CC      hw/pci/pcie_aer.o
  CC      hw/pci/pcie_port.o
  CC      hw/pci/pci-stub.o
  CC      hw/pcmcia/pcmcia.o
  CC      hw/scsi/scsi-disk.o
  CC      hw/scsi/scsi-generic.o
  CC      hw/scsi/scsi-bus.o
  CC      hw/scsi/lsi53c895a.o
  CC      hw/scsi/mptsas.o
  CC      hw/scsi/mptconfig.o
  CC      hw/scsi/mptendian.o
  CC      hw/scsi/megasas.o
  CC      hw/scsi/vmw_pvscsi.o
  CC      hw/scsi/esp.o
  CC      hw/scsi/esp-pci.o
  CC      hw/sd/pl181.o
  CC      hw/sd/ssi-sd.o
  CC      hw/sd/sd.o
  CC      hw/sd/core.o
  CC      hw/sd/sdhci.o
  CC      hw/smbios/smbios.o
  CC      hw/smbios/smbios_type_38.o
  CC      hw/smbios/smbios-stub.o
  CC      hw/smbios/smbios_type_38-stub.o
  CC      hw/ssi/pl022.o
  CC      hw/ssi/xilinx_spips.o
  CC      hw/ssi/ssi.o
  CC      hw/ssi/aspeed_smc.o
  CC      hw/ssi/stm32f2xx_spi.o
  CC      hw/ssi/mss-spi.o
  CC      hw/timer/arm_timer.o
  CC      hw/timer/arm_mptimer.o
  CC      hw/timer/armv7m_systick.o
  CC      hw/timer/a9gtimer.o
  CC      hw/timer/cadence_ttc.o
  CC      hw/timer/ds1338.o
  CC      hw/timer/i8254_common.o
  CC      hw/timer/hpet.o
  CC      hw/timer/i8254.o
  CC      hw/timer/pl031.o
  CC      hw/timer/twl92230.o
  CC      hw/timer/imx_gpt.o
  CC      hw/timer/stm32f2xx_timer.o
  CC      hw/timer/aspeed_timer.o
  CC      hw/timer/cmsdk-apb-timer.o
  CC      hw/timer/imx_epit.o
  CC      hw/timer/mss-timer.o
  CC      hw/tpm/tpm_tis.o
  CC      hw/tpm/tpm_passthrough.o
  CC      hw/tpm/tpm_util.o
  CC      hw/tpm/tpm_emulator.o
  CC      hw/usb/core.o
  CC      hw/usb/combined-packet.o
  CC      hw/usb/bus.o
  CC      hw/usb/libhw.o
  CC      hw/usb/desc.o
  CC      hw/usb/desc-msos.o
  CC      hw/usb/hcd-uhci.o
  CC      hw/usb/hcd-ohci.o
  CC      hw/usb/hcd-ehci.o
  CC      hw/usb/hcd-ehci-pci.o
  CC      hw/usb/hcd-ehci-sysbus.o
  CC      hw/usb/hcd-xhci.o
  CC      hw/usb/hcd-musb.o
  CC      hw/usb/hcd-xhci-nec.o
  CC      hw/usb/dev-hub.o
  CC      hw/usb/dev-hid.o
  CC      hw/usb/dev-wacom.o
  CC      hw/usb/dev-storage.o
  CC      hw/usb/dev-uas.o
  CC      hw/usb/dev-audio.o
  CC      hw/usb/dev-serial.o
  CC      hw/usb/dev-network.o
  CC      hw/usb/dev-bluetooth.o
  CC      hw/usb/dev-smartcard-reader.o
  CC      hw/usb/ccid-card-passthru.o
  CC      hw/usb/ccid-card-emulated.o
  CC      hw/usb/dev-mtp.o
  CC      hw/usb/host-stub.o
  CC      hw/virtio/virtio-rng.o
  CC      hw/virtio/virtio-pci.o
  CC      hw/virtio/virtio-bus.o
  CC      hw/virtio/virtio-mmio.o
  CC      hw/virtio/vhost-stub.o
  CC      hw/watchdog/watchdog.o
  CC      hw/watchdog/wdt_i6300esb.o
  CC      hw/watchdog/wdt_aspeed.o
  CC      hw/xen/xen_backend.o
  CC      hw/xen/xen_devconfig.o
  CC      hw/watchdog/wdt_ib700.o
  CC      hw/xen/xen_pvdev.o
  CC      hw/xen/xen-common.o
  CC      migration/migration.o
  CC      migration/socket.o
  CC      migration/exec.o
  CC      migration/fd.o
  CC      migration/tls.o
  CC      migration/savevm.o
  CC      migration/channel.o
  CC      migration/colo-comm.o
  CC      migration/colo.o
  CC      migration/colo-failover.o
  CC      migration/vmstate.o
  CC      migration/vmstate-types.o
  CC      migration/page_cache.o
  CC      migration/qemu-file.o
  CC      migration/global_state.o
  CC      migration/qemu-file-channel.o
  CC      migration/xbzrle.o
  CC      migration/postcopy-ram.o
  CC      migration/qjson.o
  CC      migration/rdma.o
  CC      migration/block.o
  CC      net/net.o
  CC      net/queue.o
  CC      net/checksum.o
  CC      net/util.o
  CC      net/hub.o
  CC      net/socket.o
  CC      net/eth.o
  CC      net/l2tpv3.o
  CC      net/dump.o
  CC      net/vhost-user.o
  CC      net/slirp.o
  CC      net/filter.o
  CC      net/filter-buffer.o
  CC      net/filter-mirror.o
  CC      net/colo-compare.o
  CC      net/colo.o
  CC      net/filter-rewriter.o
  CC      net/filter-replay.o
  CC      net/tap.o
  CC      qom/cpu.o
  CC      net/tap-linux.o
  CC      replay/replay.o
  CC      replay/replay-internal.o
  CC      replay/replay-events.o
  CC      replay/replay-time.o
  CC      replay/replay-input.o
  CC      replay/replay-char.o
  CC      replay/replay-snapshot.o
  CC      replay/replay-audio.o
  CC      replay/replay-net.o
  CC      slirp/cksum.o
  CC      slirp/if.o
  CC      slirp/ip6_icmp.o
  CC      slirp/ip_icmp.o
  CC      slirp/ip6_input.o
  CC      slirp/ip6_output.o
  CC      slirp/ip_input.o
  CC      slirp/ip_output.o
  CC      slirp/dnssearch.o
  CC      slirp/slirp.o
  CC      slirp/dhcpv6.o
  CC      slirp/mbuf.o
  CC      slirp/misc.o
  CC      slirp/sbuf.o
  CC      slirp/socket.o
  CC      slirp/tcp_input.o
  CC      slirp/tcp_output.o
  CC      slirp/tcp_subr.o
  CC      slirp/tcp_timer.o
  CC      slirp/udp.o
  CC      slirp/udp6.o
  CC      slirp/bootp.o
  CC      slirp/tftp.o
/tmp/qemu-test/src/slirp/tcp_input.c: In function 'tcp_input':
/tmp/qemu-test/src/slirp/tcp_input.c:219: warning: 'save_ip.ip_p' may be used uninitialized in this function
/tmp/qemu-test/src/slirp/tcp_input.c:219: warning: 'save_ip.ip_len' may be used uninitialized in this function
/tmp/qemu-test/src/slirp/tcp_input.c:219: warning: 'save_ip.ip_tos' may be used uninitialized in this function
/tmp/qemu-test/src/slirp/tcp_input.c:219: warning: 'save_ip.ip_id' may be used uninitialized in this function
/tmp/qemu-test/src/slirp/tcp_input.c:219: warning: 'save_ip.ip_off' may be used uninitialized in this function
/tmp/qemu-test/src/slirp/tcp_input.c:219: warning: 'save_ip.ip_ttl' may be used uninitialized in this function
/tmp/qemu-test/src/slirp/tcp_input.c:219: warning: 'save_ip.ip_sum' may be used uninitialized in this function
/tmp/qemu-test/src/slirp/tcp_input.c:219: warning: 'save_ip.ip_src.s_addr' may be used uninitialized in this function
/tmp/qemu-test/src/slirp/tcp_input.c:219: warning: 'save_ip.ip_dst.s_addr' may be used uninitialized in this function
/tmp/qemu-test/src/slirp/tcp_input.c:220: warning: 'save_ip6.ip_nh' may be used uninitialized in this function
  CC      slirp/arp_table.o
  CC      slirp/ndp_table.o
  CC      slirp/ncsi.o
  CC      ui/console.o
  CC      ui/cursor.o
  CC      ui/keymaps.o
  CC      ui/qemu-pixman.o
  CC      ui/input.o
  CC      ui/input-keymap.o
  CC      ui/input-legacy.o
  CC      ui/input-linux.o
  CC      ui/spice-core.o
  CC      ui/spice-input.o
  CC      ui/spice-display.o
  CC      ui/sdl.o
  CC      ui/sdl_zoom.o
  CC      ui/x_keymap.o
  CC      ui/curses.o
  CC      ui/vnc.o
  CC      ui/vnc-enc-zlib.o
  CC      ui/vnc-enc-hextile.o
  CC      ui/vnc-enc-zrle.o
  CC      ui/vnc-enc-tight.o
  CC      ui/vnc-palette.o
  CC      ui/vnc-auth-vencrypt.o
  CC      ui/vnc-ws.o
  CC      ui/vnc-jobs.o
  CC      ui/gtk.o
  VERT    ui/shader/texture-blit-vert.h
  FRAG    ui/shader/texture-blit-frag.h
  VERT    ui/shader/texture-blit-flip-vert.h
  CC      ui/console-gl.o
  CC      ui/egl-context.o
  CC      ui/egl-helpers.o
  CC      ui/gtk-egl.o
  CC      chardev/char.o
  CC      chardev/char-fe.o
  CC      chardev/char-fd.o
  CC      chardev/char-file.o
  CC      chardev/char-io.o
  CC      chardev/char-mux.o
  CC      chardev/char-null.o
In file included from /usr/include/gtk-2.0/gtk/gtk.h:235,
                 from /tmp/qemu-test/src/include/ui/gtk.h:10,
                 from /tmp/qemu-test/src/ui/gtk.c:43:
/usr/include/gtk-2.0/gtk/gtkitemfactory.h:47: warning: function declaration isn't a prototype
  CC      chardev/char-parallel.o
  CC      chardev/char-pty.o
  CC      chardev/char-pipe.o
  CC      chardev/char-serial.o
  CC      chardev/char-ringbuf.o
  CC      chardev/char-socket.o
In file included from /usr/include/gtk-2.0/gtk/gtk.h:235,
                 from /tmp/qemu-test/src/include/ui/gtk.h:10,
                 from /tmp/qemu-test/src/ui/gtk-egl.c:21:
/usr/include/gtk-2.0/gtk/gtkitemfactory.h:47: warning: function declaration isn't a prototype
  CC      chardev/char-stdio.o
  CC      chardev/char-udp.o
  LINK    tests/qemu-iotests/socket_scm_helper
  CC      qga/commands.o
  CC      qga/guest-agent-command-state.o
  CC      qga/main.o
  CC      qga/commands-posix.o
  CC      qga/channel-posix.o
  CC      qga/qapi-generated/qga-qapi-types.o
  CC      qga/qapi-generated/qga-qapi-visit.o
  CC      qga/qapi-generated/qga-qmp-marshal.o
  AR      libqemuutil.a
  CC      qemu-img.o
  CC      ui/shader.o
  AS      optionrom/multiboot.o
  AS      optionrom/linuxboot.o
  CC      optionrom/linuxboot_dma.o
  AS      optionrom/kvmvapic.o
cc: unrecognized option '-no-integrated-as'
cc: unrecognized option '-no-integrated-as'
  BUILD   optionrom/linuxboot_dma.img
  LINK    qemu-ga
  BUILD   optionrom/kvmvapic.img
  BUILD   optionrom/multiboot.img
  BUILD   optionrom/linuxboot.img
  BUILD   optionrom/linuxboot_dma.raw
  BUILD   optionrom/linuxboot.raw
  BUILD   optionrom/kvmvapic.raw
  SIGN    optionrom/linuxboot_dma.bin
  BUILD   optionrom/multiboot.raw
  SIGN    optionrom/linuxboot.bin
  SIGN    optionrom/multiboot.bin
  SIGN    optionrom/kvmvapic.bin
  LINK    ivshmem-client
  LINK    ivshmem-server
  LINK    qemu-nbd
  LINK    qemu-img
  LINK    qemu-io
  LINK    scsi/qemu-pr-helper
  LINK    qemu-bridge-helper
  GEN     x86_64-softmmu/hmp-commands.h
  GEN     x86_64-softmmu/hmp-commands-info.h
  GEN     x86_64-softmmu/config-target.h
  GEN     aarch64-softmmu/hmp-commands.h
  GEN     aarch64-softmmu/config-target.h
  GEN     aarch64-softmmu/hmp-commands-info.h
  CC      aarch64-softmmu/tcg/optimize.o
  CC      aarch64-softmmu/exec.o
  CC      aarch64-softmmu/tcg/tcg.o
  CC      aarch64-softmmu/tcg/tcg-common.o
  CC      aarch64-softmmu/tcg/tcg-op.o
  CC      aarch64-softmmu/disas.o
  CC      aarch64-softmmu/fpu/softfloat.o
  CC      x86_64-softmmu/exec.o
  CC      x86_64-softmmu/tcg/tcg.o
  CC      x86_64-softmmu/tcg/tcg-op.o
  CC      x86_64-softmmu/tcg/optimize.o
  CC      x86_64-softmmu/tcg/tcg-common.o
  GEN     aarch64-softmmu/gdbstub-xml.c
  CC      aarch64-softmmu/arch_init.o
  CC      aarch64-softmmu/cpus.o
  CC      aarch64-softmmu/monitor.o
  CC      x86_64-softmmu/fpu/softfloat.o
  CC      x86_64-softmmu/disas.o
  GEN     x86_64-softmmu/gdbstub-xml.c
  CC      aarch64-softmmu/gdbstub.o
  CC      x86_64-softmmu/arch_init.o
  CC      x86_64-softmmu/cpus.o
  CC      x86_64-softmmu/monitor.o
  CC      x86_64-softmmu/gdbstub.o
  CC      x86_64-softmmu/ioport.o
  CC      x86_64-softmmu/balloon.o
  CC      x86_64-softmmu/numa.o
  CC      aarch64-softmmu/balloon.o
  CC      x86_64-softmmu/qtest.o
  CC      x86_64-softmmu/memory.o
  CC      x86_64-softmmu/memory_mapping.o
  CC      x86_64-softmmu/dump.o
  CC      aarch64-softmmu/ioport.o
  CC      aarch64-softmmu/numa.o
  CC      aarch64-softmmu/qtest.o
  CC      x86_64-softmmu/migration/ram.o
  CC      x86_64-softmmu/accel/accel.o
  CC      x86_64-softmmu/accel/kvm/kvm-all.o
  CC      x86_64-softmmu/accel/stubs/hax-stub.o
  CC      x86_64-softmmu/accel/tcg/tcg-all.o
  CC      x86_64-softmmu/accel/tcg/cputlb.o
  CC      aarch64-softmmu/memory.o
  CC      x86_64-softmmu/accel/tcg/tcg-runtime.o
  CC      x86_64-softmmu/accel/tcg/cpu-exec.o
  CC      aarch64-softmmu/memory_mapping.o
  CC      aarch64-softmmu/dump.o
  CC      x86_64-softmmu/accel/tcg/cpu-exec-common.o
  CC      x86_64-softmmu/accel/tcg/translate-all.o
  CC      x86_64-softmmu/accel/tcg/translator.o
  CC      aarch64-softmmu/migration/ram.o
  CC      aarch64-softmmu/accel/accel.o
  CC      x86_64-softmmu/hw/block/virtio-blk.o
  CC      x86_64-softmmu/hw/block/dataplane/virtio-blk.o
  CC      aarch64-softmmu/accel/stubs/kvm-stub.o
  CC      x86_64-softmmu/hw/core/generic-loader.o
  CC      x86_64-softmmu/hw/char/virtio-serial-bus.o
  CC      aarch64-softmmu/accel/tcg/tcg-all.o
  CC      aarch64-softmmu/accel/stubs/hax-stub.o
  CC      x86_64-softmmu/hw/core/null-machine.o
  CC      aarch64-softmmu/accel/tcg/cputlb.o
  CC      aarch64-softmmu/accel/tcg/tcg-runtime.o
  CC      x86_64-softmmu/hw/display/vga.o
  CC      aarch64-softmmu/accel/tcg/cpu-exec.o
  CC      x86_64-softmmu/hw/display/virtio-gpu.o
  CC      aarch64-softmmu/accel/tcg/cpu-exec-common.o
  CC      aarch64-softmmu/accel/tcg/translate-all.o
  CC      x86_64-softmmu/hw/display/virtio-gpu-3d.o
  CC      aarch64-softmmu/accel/tcg/translator.o
  CC      aarch64-softmmu/hw/adc/stm32f2xx_adc.o
  CC      aarch64-softmmu/hw/block/virtio-blk.o
  CC      x86_64-softmmu/hw/display/virtio-gpu-pci.o
  CC      x86_64-softmmu/hw/display/virtio-vga.o
  CC      aarch64-softmmu/hw/block/dataplane/virtio-blk.o
  CC      x86_64-softmmu/hw/intc/apic.o
  CC      aarch64-softmmu/hw/char/exynos4210_uart.o
  CC      x86_64-softmmu/hw/intc/apic_common.o
  CC      x86_64-softmmu/hw/intc/ioapic.o
  CC      aarch64-softmmu/hw/char/omap_uart.o
  CC      x86_64-softmmu/hw/isa/lpc_ich9.o
  CC      x86_64-softmmu/hw/misc/vmport.o
  CC      aarch64-softmmu/hw/char/digic-uart.o
  CC      x86_64-softmmu/hw/misc/ivshmem.o
  CC      x86_64-softmmu/hw/misc/pvpanic.o
  CC      aarch64-softmmu/hw/char/stm32f2xx_usart.o
  CC      aarch64-softmmu/hw/char/bcm2835_aux.o
  CC      x86_64-softmmu/hw/misc/hyperv_testdev.o
  CC      x86_64-softmmu/hw/misc/mmio_interface.o
  CC      aarch64-softmmu/hw/char/virtio-serial-bus.o
  CC      aarch64-softmmu/hw/core/generic-loader.o
  CC      x86_64-softmmu/hw/net/virtio-net.o
  CC      x86_64-softmmu/hw/net/vhost_net.o
  CC      x86_64-softmmu/hw/scsi/virtio-scsi-dataplane.o
  CC      x86_64-softmmu/hw/scsi/virtio-scsi.o
  CC      aarch64-softmmu/hw/core/null-machine.o
  CC      x86_64-softmmu/hw/scsi/vhost-scsi-common.o
  CC      x86_64-softmmu/hw/scsi/vhost-scsi.o
  CC      x86_64-softmmu/hw/scsi/vhost-user-scsi.o
  CC      x86_64-softmmu/hw/timer/mc146818rtc.o
  CC      aarch64-softmmu/hw/cpu/arm11mpcore.o
  CC      x86_64-softmmu/hw/vfio/common.o
  CC      x86_64-softmmu/hw/vfio/pci.o
  CC      aarch64-softmmu/hw/cpu/realview_mpcore.o
  CC      x86_64-softmmu/hw/vfio/pci-quirks.o
  CC      x86_64-softmmu/hw/vfio/platform.o
  CC      aarch64-softmmu/hw/cpu/a9mpcore.o
  CC      x86_64-softmmu/hw/vfio/spapr.o
  CC      aarch64-softmmu/hw/cpu/a15mpcore.o
  CC      x86_64-softmmu/hw/virtio/virtio.o
  CC      aarch64-softmmu/hw/display/omap_dss.o
  CC      aarch64-softmmu/hw/display/omap_lcdc.o
  CC      aarch64-softmmu/hw/display/pxa2xx_lcd.o
  CC      aarch64-softmmu/hw/display/bcm2835_fb.o
  CC      x86_64-softmmu/hw/virtio/vhost.o
  CC      x86_64-softmmu/hw/virtio/virtio-balloon.o
  CC      aarch64-softmmu/hw/display/vga.o
  CC      x86_64-softmmu/hw/virtio/vhost-backend.o
  CC      aarch64-softmmu/hw/display/virtio-gpu.o
  CC      x86_64-softmmu/hw/virtio/vhost-user.o
  CC      x86_64-softmmu/hw/virtio/vhost-vsock.o
  CC      aarch64-softmmu/hw/display/virtio-gpu-3d.o
  CC      x86_64-softmmu/hw/virtio/virtio-crypto.o
  CC      x86_64-softmmu/hw/virtio/virtio-crypto-pci.o
  CC      aarch64-softmmu/hw/display/virtio-gpu-pci.o
  CC      x86_64-softmmu/hw/xen/xen-host-pci-device.o
  CC      aarch64-softmmu/hw/display/dpcd.o
  CC      x86_64-softmmu/hw/xen/xen_pt.o
  CC      x86_64-softmmu/hw/xen/xen_pt_config_init.o
  CC      aarch64-softmmu/hw/display/xlnx_dp.o
  CC      x86_64-softmmu/hw/xen/xen_pt_graphics.o
  CC      aarch64-softmmu/hw/dma/xlnx_dpdma.o
  CC      x86_64-softmmu/hw/xen/xen_pt_msi.o
  CC      aarch64-softmmu/hw/dma/omap_dma.o
  CC      aarch64-softmmu/hw/dma/soc_dma.o
  CC      x86_64-softmmu/hw/i386/multiboot.o
  CC      x86_64-softmmu/hw/i386/pc.o
  CC      x86_64-softmmu/hw/i386/pc_piix.o
  CC      x86_64-softmmu/hw/i386/pc_q35.o
  CC      aarch64-softmmu/hw/dma/pxa2xx_dma.o
  CC      aarch64-softmmu/hw/dma/bcm2835_dma.o
  CC      x86_64-softmmu/hw/i386/pc_sysfw.o
  CC      aarch64-softmmu/hw/gpio/omap_gpio.o
/tmp/qemu-test/src/hw/i386/pc_piix.c: In function 'igd_passthrough_isa_bridge_create':
/tmp/qemu-test/src/hw/i386/pc_piix.c:1072: warning: 'pch_rev_id' may be used uninitialized in this function
  CC      aarch64-softmmu/hw/gpio/imx_gpio.o
  CC      x86_64-softmmu/hw/i386/x86-iommu.o
  CC      aarch64-softmmu/hw/gpio/bcm2835_gpio.o
  CC      x86_64-softmmu/hw/i386/intel_iommu.o
  CC      x86_64-softmmu/hw/i386/amd_iommu.o
  CC      aarch64-softmmu/hw/i2c/omap_i2c.o
  CC      x86_64-softmmu/hw/i386/kvmvapic.o
  CC      aarch64-softmmu/hw/input/pxa2xx_keypad.o
  CC      x86_64-softmmu/hw/i386/acpi-build.o
  CC      aarch64-softmmu/hw/input/tsc210x.o
  CC      x86_64-softmmu/hw/i386/pci-assign-load-rom.o
  CC      aarch64-softmmu/hw/intc/armv7m_nvic.o
  CC      aarch64-softmmu/hw/intc/exynos4210_gic.o
  CC      x86_64-softmmu/hw/i386/../xenpv/xen_machine_pv.o
  CC      x86_64-softmmu/hw/i386/kvm/clock.o
/tmp/qemu-test/src/hw/i386/acpi-build.c: In function 'build_append_pci_bus_devices':
/tmp/qemu-test/src/hw/i386/acpi-build.c:509: warning: 'notify_method' may be used uninitialized in this function
  CC      aarch64-softmmu/hw/intc/exynos4210_combiner.o
  CC      x86_64-softmmu/hw/i386/kvm/apic.o
  CC      aarch64-softmmu/hw/intc/omap_intc.o
  CC      x86_64-softmmu/hw/i386/kvm/i8259.o
  CC      aarch64-softmmu/hw/intc/bcm2835_ic.o
  CC      x86_64-softmmu/hw/i386/kvm/ioapic.o
  CC      aarch64-softmmu/hw/intc/allwinner-a10-pic.o
  CC      x86_64-softmmu/hw/i386/kvm/i8254.o
  CC      aarch64-softmmu/hw/intc/bcm2836_control.o
  CC      x86_64-softmmu/hw/i386/kvm/pci-assign.o
  CC      x86_64-softmmu/hw/i386/xen/xen_platform.o
  CC      x86_64-softmmu/hw/i386/xen/xen_apic.o
  CC      aarch64-softmmu/hw/intc/aspeed_vic.o
  CC      x86_64-softmmu/hw/i386/xen/xen_pvdevice.o
  CC      x86_64-softmmu/hw/i386/xen/xen-hvm.o
  CC      x86_64-softmmu/hw/i386/xen/xen-mapcache.o
  CC      x86_64-softmmu/target/i386/helper.o
  CC      aarch64-softmmu/hw/misc/ivshmem.o
  CC      aarch64-softmmu/hw/intc/arm_gicv3_cpuif.o
  CC      x86_64-softmmu/target/i386/cpu.o
  CC      x86_64-softmmu/target/i386/gdbstub.o
  CC      aarch64-softmmu/hw/misc/arm_sysctl.o
  CC      aarch64-softmmu/hw/misc/cbus.o
  CC      aarch64-softmmu/hw/misc/exynos4210_pmu.o
  CC      x86_64-softmmu/target/i386/xsave_helper.o
  CC      aarch64-softmmu/hw/misc/exynos4210_clk.o
  CC      x86_64-softmmu/target/i386/translate.o
  CC      x86_64-softmmu/target/i386/bpt_helper.o
  CC      aarch64-softmmu/hw/misc/exynos4210_rng.o
  CC      x86_64-softmmu/target/i386/cc_helper.o
  CC      x86_64-softmmu/target/i386/excp_helper.o
  CC      x86_64-softmmu/target/i386/fpu_helper.o
  CC      aarch64-softmmu/hw/misc/imx_ccm.o
  CC      x86_64-softmmu/target/i386/int_helper.o
  CC      x86_64-softmmu/target/i386/mem_helper.o
  CC      x86_64-softmmu/target/i386/mpx_helper.o
  CC      x86_64-softmmu/target/i386/misc_helper.o
  CC      x86_64-softmmu/target/i386/seg_helper.o
  CC      aarch64-softmmu/hw/misc/imx31_ccm.o
  CC      x86_64-softmmu/target/i386/smm_helper.o
  CC      aarch64-softmmu/hw/misc/imx25_ccm.o
  CC      aarch64-softmmu/hw/misc/imx6_ccm.o
  CC      aarch64-softmmu/hw/misc/imx6_src.o
  CC      x86_64-softmmu/target/i386/svm_helper.o
  CC      x86_64-softmmu/target/i386/machine.o
  CC      aarch64-softmmu/hw/misc/mst_fpga.o
  CC      x86_64-softmmu/target/i386/arch_memory_mapping.o
  CC      aarch64-softmmu/hw/misc/omap_clk.o
  CC      x86_64-softmmu/target/i386/arch_dump.o
  CC      x86_64-softmmu/target/i386/monitor.o
  CC      x86_64-softmmu/target/i386/kvm.o
  CC      aarch64-softmmu/hw/misc/omap_gpmc.o
  CC      x86_64-softmmu/target/i386/hyperv.o
  CC      aarch64-softmmu/hw/misc/omap_l4.o
  CC      aarch64-softmmu/hw/misc/omap_tap.o
  CC      aarch64-softmmu/hw/misc/omap_sdrc.o
  CC      aarch64-softmmu/hw/misc/bcm2835_mbox.o
  GEN     trace/generated-helpers.c
  CC      aarch64-softmmu/hw/misc/bcm2835_rng.o
  CC      aarch64-softmmu/hw/misc/bcm2835_property.o
  CC      x86_64-softmmu/trace/control-target.o
  CC      aarch64-softmmu/hw/misc/zynq-xadc.o
  CC      aarch64-softmmu/hw/misc/zynq_slcr.o
  CC      aarch64-softmmu/hw/misc/stm32f2xx_syscfg.o
  CC      aarch64-softmmu/hw/misc/mps2-scc.o
  CC      x86_64-softmmu/gdbstub-xml.o
  CC      aarch64-softmmu/hw/misc/auxbus.o
  CC      aarch64-softmmu/hw/misc/aspeed_scu.o
  CC      aarch64-softmmu/hw/misc/aspeed_sdmc.o
  CC      aarch64-softmmu/hw/misc/mmio_interface.o
  CC      aarch64-softmmu/hw/net/virtio-net.o
  CC      aarch64-softmmu/hw/misc/msf2-sysreg.o
  CC      aarch64-softmmu/hw/net/vhost_net.o
  CC      aarch64-softmmu/hw/pcmcia/pxa2xx.o
  CC      aarch64-softmmu/hw/scsi/virtio-scsi.o
  CC      aarch64-softmmu/hw/scsi/virtio-scsi-dataplane.o
  CC      x86_64-softmmu/trace/generated-helpers.o
  CC      aarch64-softmmu/hw/scsi/vhost-scsi-common.o
  CC      aarch64-softmmu/hw/scsi/vhost-scsi.o
  CC      aarch64-softmmu/hw/scsi/vhost-user-scsi.o
  CC      aarch64-softmmu/hw/sd/omap_mmc.o
  CC      aarch64-softmmu/hw/sd/pxa2xx_mmci.o
  CC      aarch64-softmmu/hw/sd/bcm2835_sdhost.o
  CC      aarch64-softmmu/hw/ssi/omap_spi.o
  CC      aarch64-softmmu/hw/ssi/imx_spi.o
  CC      aarch64-softmmu/hw/timer/exynos4210_mct.o
  CC      aarch64-softmmu/hw/timer/exynos4210_pwm.o
  CC      aarch64-softmmu/hw/timer/exynos4210_rtc.o
  CC      aarch64-softmmu/hw/timer/omap_gptimer.o
  CC      aarch64-softmmu/hw/timer/omap_synctimer.o
  CC      aarch64-softmmu/hw/timer/pxa2xx_timer.o
  CC      aarch64-softmmu/hw/timer/digic-timer.o
  LINK    x86_64-softmmu/qemu-system-x86_64
  CC      aarch64-softmmu/hw/usb/tusb6010.o
  CC      aarch64-softmmu/hw/timer/allwinner-a10-pit.o
  CC      aarch64-softmmu/hw/vfio/common.o
  CC      aarch64-softmmu/hw/vfio/platform.o
  CC      aarch64-softmmu/hw/vfio/pci-quirks.o
  CC      aarch64-softmmu/hw/vfio/pci.o
  CC      aarch64-softmmu/hw/vfio/calxeda-xgmac.o
  CC      aarch64-softmmu/hw/vfio/amd-xgbe.o
  CC      aarch64-softmmu/hw/vfio/spapr.o
  CC      aarch64-softmmu/hw/virtio/virtio.o
  CC      aarch64-softmmu/hw/virtio/virtio-balloon.o
  CC      aarch64-softmmu/hw/virtio/vhost-backend.o
  CC      aarch64-softmmu/hw/virtio/vhost-user.o
  CC      aarch64-softmmu/hw/virtio/vhost.o
  CC      aarch64-softmmu/hw/virtio/vhost-vsock.o
  CC      aarch64-softmmu/hw/virtio/virtio-crypto.o
  CC      aarch64-softmmu/hw/virtio/virtio-crypto-pci.o
  CC      aarch64-softmmu/hw/arm/boot.o
  CC      aarch64-softmmu/hw/arm/collie.o
  CC      aarch64-softmmu/hw/arm/exynos4_boards.o
  CC      aarch64-softmmu/hw/arm/gumstix.o
  CC      aarch64-softmmu/hw/arm/highbank.o
  CC      aarch64-softmmu/hw/arm/digic_boards.o
  CC      aarch64-softmmu/hw/arm/integratorcp.o
  CC      aarch64-softmmu/hw/arm/mainstone.o
  CC      aarch64-softmmu/hw/arm/musicpal.o
  CC      aarch64-softmmu/hw/arm/nseries.o
  CC      aarch64-softmmu/hw/arm/omap_sx1.o
  CC      aarch64-softmmu/hw/arm/palm.o
  CC      aarch64-softmmu/hw/arm/realview.o
  CC      aarch64-softmmu/hw/arm/spitz.o
  CC      aarch64-softmmu/hw/arm/stellaris.o
  CC      aarch64-softmmu/hw/arm/tosa.o
  CC      aarch64-softmmu/hw/arm/versatilepb.o
  CC      aarch64-softmmu/hw/arm/virt.o
  CC      aarch64-softmmu/hw/arm/vexpress.o
  CC      aarch64-softmmu/hw/arm/xilinx_zynq.o
  CC      aarch64-softmmu/hw/arm/z2.o
  CC      aarch64-softmmu/hw/arm/netduino2.o
  CC      aarch64-softmmu/hw/arm/virt-acpi-build.o
  CC      aarch64-softmmu/hw/arm/sysbus-fdt.o
  CC      aarch64-softmmu/hw/arm/armv7m.o
  CC      aarch64-softmmu/hw/arm/exynos4210.o
  CC      aarch64-softmmu/hw/arm/pxa2xx_gpio.o
  CC      aarch64-softmmu/hw/arm/pxa2xx_pic.o
  CC      aarch64-softmmu/hw/arm/pxa2xx.o
  CC      aarch64-softmmu/hw/arm/digic.o
  CC      aarch64-softmmu/hw/arm/omap1.o
  CC      aarch64-softmmu/hw/arm/strongarm.o
  CC      aarch64-softmmu/hw/arm/omap2.o
  CC      aarch64-softmmu/hw/arm/allwinner-a10.o
  CC      aarch64-softmmu/hw/arm/bcm2835_peripherals.o
  CC      aarch64-softmmu/hw/arm/bcm2836.o
  CC      aarch64-softmmu/hw/arm/cubieboard.o
  CC      aarch64-softmmu/hw/arm/stm32f205_soc.o
  CC      aarch64-softmmu/hw/arm/xlnx-zynqmp.o
  CC      aarch64-softmmu/hw/arm/raspi.o
  CC      aarch64-softmmu/hw/arm/xlnx-zcu102.o
  CC      aarch64-softmmu/hw/arm/fsl-imx25.o
  CC      aarch64-softmmu/hw/arm/imx25_pdk.o
  CC      aarch64-softmmu/hw/arm/fsl-imx31.o
  CC      aarch64-softmmu/hw/arm/kzm.o
  CC      aarch64-softmmu/hw/arm/fsl-imx6.o
  CC      aarch64-softmmu/hw/arm/sabrelite.o
  CC      aarch64-softmmu/hw/arm/aspeed_soc.o
  CC      aarch64-softmmu/hw/arm/aspeed.o
  CC      aarch64-softmmu/hw/arm/mps2.o
  CC      aarch64-softmmu/hw/arm/msf2-soc.o
  CC      aarch64-softmmu/hw/arm/msf2-som.o
  CC      aarch64-softmmu/target/arm/arm-semi.o
  CC      aarch64-softmmu/target/arm/machine.o
  CC      aarch64-softmmu/target/arm/psci.o
  CC      aarch64-softmmu/target/arm/arch_dump.o
  CC      aarch64-softmmu/target/arm/monitor.o
  CC      aarch64-softmmu/target/arm/kvm-stub.o
  CC      aarch64-softmmu/target/arm/translate.o
  CC      aarch64-softmmu/target/arm/op_helper.o
  CC      aarch64-softmmu/target/arm/helper.o
  CC      aarch64-softmmu/target/arm/cpu.o
  CC      aarch64-softmmu/target/arm/neon_helper.o
  CC      aarch64-softmmu/target/arm/iwmmxt_helper.o
  CC      aarch64-softmmu/target/arm/gdbstub.o
  CC      aarch64-softmmu/target/arm/translate-a64.o
  CC      aarch64-softmmu/target/arm/cpu64.o
  CC      aarch64-softmmu/target/arm/helper-a64.o
  CC      aarch64-softmmu/target/arm/gdbstub64.o
  CC      aarch64-softmmu/target/arm/crypto_helper.o
/tmp/qemu-test/src/target/arm/translate-a64.c: In function 'handle_shri_with_rndacc':
/tmp/qemu-test/src/target/arm/translate-a64.c:6390: warning: 'tcg_src_hi' may be used uninitialized in this function
/tmp/qemu-test/src/target/arm/translate-a64.c: In function 'disas_simd_scalar_two_reg_misc':
/tmp/qemu-test/src/target/arm/translate-a64.c:8117: warning: 'rmode' may be used uninitialized in this function
  CC      aarch64-softmmu/target/arm/arm-powerctl.o
  GEN     trace/generated-helpers.c
  CC      aarch64-softmmu/trace/control-target.o
  CC      aarch64-softmmu/gdbstub-xml.o
  CC      aarch64-softmmu/trace/generated-helpers.o
  LINK    aarch64-softmmu/qemu-system-aarch64
mkdir -p dtc/libfdt
mkdir -p dtc/tests
  TEST    tests/qapi-schema/alternate-any.out
  TEST    tests/qapi-schema/alternate-array.out
  TEST    tests/qapi-schema/alternate-base.out
  TEST    tests/qapi-schema/alternate-conflict-dict.out
  TEST    tests/qapi-schema/alternate-clash.out
  TEST    tests/qapi-schema/alternate-conflict-enum-bool.out
  TEST    tests/qapi-schema/alternate-conflict-enum-int.out
  TEST    tests/qapi-schema/alternate-conflict-string.out
  TEST    tests/qapi-schema/alternate-conflict-bool-string.out
  TEST    tests/qapi-schema/alternate-conflict-num-string.out
  TEST    tests/qapi-schema/alternate-empty.out
  TEST    tests/qapi-schema/alternate-nested.out
  TEST    tests/qapi-schema/alternate-unknown.out
  TEST    tests/qapi-schema/args-any.out
  TEST    tests/qapi-schema/args-alternate.out
  TEST    tests/qapi-schema/args-array-empty.out
  TEST    tests/qapi-schema/args-array-unknown.out
  TEST    tests/qapi-schema/args-bad-boxed.out
  TEST    tests/qapi-schema/args-boxed-anon.out
  TEST    tests/qapi-schema/args-boxed-string.out
  TEST    tests/qapi-schema/args-boxed-empty.out
  TEST    tests/qapi-schema/args-int.out
  TEST    tests/qapi-schema/args-invalid.out
  TEST    tests/qapi-schema/args-member-array-bad.out
  TEST    tests/qapi-schema/args-member-case.out
  TEST    tests/qapi-schema/args-member-unknown.out
  TEST    tests/qapi-schema/args-name-clash.out
  TEST    tests/qapi-schema/args-union.out
  TEST    tests/qapi-schema/args-unknown.out
  TEST    tests/qapi-schema/bad-base.out
  TEST    tests/qapi-schema/bad-data.out
  TEST    tests/qapi-schema/bad-ident.out
  TEST    tests/qapi-schema/bad-type-bool.out
  TEST    tests/qapi-schema/bad-type-dict.out
  TEST    tests/qapi-schema/bad-type-int.out
  TEST    tests/qapi-schema/base-cycle-direct.out
  TEST    tests/qapi-schema/base-cycle-indirect.out
  TEST    tests/qapi-schema/command-int.out
  TEST    tests/qapi-schema/comments.out
  TEST    tests/qapi-schema/doc-bad-alternate-member.out
  TEST    tests/qapi-schema/doc-bad-command-arg.out
  TEST    tests/qapi-schema/doc-bad-symbol.out
  TEST    tests/qapi-schema/doc-bad-union-member.out
  TEST    tests/qapi-schema/doc-before-include.out
  TEST    tests/qapi-schema/doc-before-pragma.out
  TEST    tests/qapi-schema/doc-duplicated-arg.out
  TEST    tests/qapi-schema/doc-duplicated-since.out
  TEST    tests/qapi-schema/doc-duplicated-return.out
  TEST    tests/qapi-schema/doc-empty-arg.out
  TEST    tests/qapi-schema/doc-empty-section.out
  TEST    tests/qapi-schema/doc-empty-symbol.out
  TEST    tests/qapi-schema/doc-good.out
  TEST    tests/qapi-schema/doc-interleaved-section.out
  TEST    tests/qapi-schema/doc-invalid-end.out
  TEST    tests/qapi-schema/doc-invalid-end2.out
  TEST    tests/qapi-schema/doc-invalid-return.out
  TEST    tests/qapi-schema/doc-invalid-section.out
  TEST    tests/qapi-schema/doc-invalid-start.out
  TEST    tests/qapi-schema/doc-missing.out
  TEST    tests/qapi-schema/doc-missing-colon.out
  TEST    tests/qapi-schema/doc-missing-expr.out
  TEST    tests/qapi-schema/doc-missing-space.out
  TEST    tests/qapi-schema/doc-no-symbol.out
  TEST    tests/qapi-schema/double-data.out
  TEST    tests/qapi-schema/double-type.out
  TEST    tests/qapi-schema/duplicate-key.out
  TEST    tests/qapi-schema/empty.out
  TEST    tests/qapi-schema/enum-bad-name.out
  TEST    tests/qapi-schema/enum-bad-prefix.out
  TEST    tests/qapi-schema/enum-clash-member.out
  TEST    tests/qapi-schema/enum-dict-member.out
  TEST    tests/qapi-schema/enum-int-member.out
  TEST    tests/qapi-schema/enum-member-case.out
  TEST    tests/qapi-schema/enum-missing-data.out
  TEST    tests/qapi-schema/enum-wrong-data.out
  TEST    tests/qapi-schema/escape-outside-string.out
  TEST    tests/qapi-schema/escape-too-big.out
  TEST    tests/qapi-schema/escape-too-short.out
  TEST    tests/qapi-schema/event-boxed-empty.out
  TEST    tests/qapi-schema/event-case.out
  TEST    tests/qapi-schema/event-nest-struct.out
  TEST    tests/qapi-schema/flat-union-array-branch.out
  TEST    tests/qapi-schema/flat-union-bad-base.out
  TEST    tests/qapi-schema/flat-union-base-any.out
  TEST    tests/qapi-schema/flat-union-bad-discriminator.out
  TEST    tests/qapi-schema/flat-union-base-union.out
  TEST    tests/qapi-schema/flat-union-clash-member.out
  TEST    tests/qapi-schema/flat-union-empty.out
  TEST    tests/qapi-schema/flat-union-incomplete-branch.out
  TEST    tests/qapi-schema/flat-union-inline.out
  TEST    tests/qapi-schema/flat-union-int-branch.out
  TEST    tests/qapi-schema/flat-union-invalid-branch-key.out
  TEST    tests/qapi-schema/flat-union-invalid-discriminator.out
  TEST    tests/qapi-schema/flat-union-no-base.out
  TEST    tests/qapi-schema/flat-union-optional-discriminator.out
  TEST    tests/qapi-schema/flat-union-string-discriminator.out
  TEST    tests/qapi-schema/funny-char.out
  TEST    tests/qapi-schema/ident-with-escape.out
  TEST    tests/qapi-schema/include-before-err.out
  TEST    tests/qapi-schema/include-cycle.out
  TEST    tests/qapi-schema/include-extra-junk.out
  TEST    tests/qapi-schema/include-format-err.out
  TEST    tests/qapi-schema/include-nested-err.out
  TEST    tests/qapi-schema/include-no-file.out
  TEST    tests/qapi-schema/include-non-file.out
  TEST    tests/qapi-schema/include-relpath.out
  TEST    tests/qapi-schema/include-repetition.out
  TEST    tests/qapi-schema/include-self-cycle.out
  TEST    tests/qapi-schema/include-simple.out
  TEST    tests/qapi-schema/indented-expr.out
  TEST    tests/qapi-schema/leading-comma-list.out
  TEST    tests/qapi-schema/leading-comma-object.out
  TEST    tests/qapi-schema/missing-colon.out
  TEST    tests/qapi-schema/missing-comma-list.out
  TEST    tests/qapi-schema/missing-comma-object.out
  TEST    tests/qapi-schema/missing-type.out
  TEST    tests/qapi-schema/nested-struct-data.out
  TEST    tests/qapi-schema/non-objects.out
  TEST    tests/qapi-schema/pragma-doc-required-crap.out
  TEST    tests/qapi-schema/pragma-extra-junk.out
  TEST    tests/qapi-schema/pragma-name-case-whitelist-crap.out
  TEST    tests/qapi-schema/pragma-non-dict.out
  TEST    tests/qapi-schema/pragma-returns-whitelist-crap.out
  TEST    tests/qapi-schema/qapi-schema-test.out
  TEST    tests/qapi-schema/quoted-structural-chars.out
  TEST    tests/qapi-schema/redefined-builtin.out
  TEST    tests/qapi-schema/redefined-command.out
  TEST    tests/qapi-schema/redefined-event.out
  TEST    tests/qapi-schema/redefined-type.out
  TEST    tests/qapi-schema/reserved-command-q.out
  TEST    tests/qapi-schema/reserved-enum-q.out
  TEST    tests/qapi-schema/reserved-member-has.out
  TEST    tests/qapi-schema/reserved-member-q.out
  TEST    tests/qapi-schema/reserved-member-u.out
  TEST    tests/qapi-schema/reserved-member-underscore.out
  TEST    tests/qapi-schema/reserved-type-kind.out
  TEST    tests/qapi-schema/returns-alternate.out
  TEST    tests/qapi-schema/reserved-type-list.out
  TEST    tests/qapi-schema/returns-array-bad.out
  TEST    tests/qapi-schema/returns-dict.out
  TEST    tests/qapi-schema/returns-unknown.out
  TEST    tests/qapi-schema/returns-whitelist.out
  TEST    tests/qapi-schema/struct-base-clash-deep.out
  TEST    tests/qapi-schema/struct-base-clash.out
  TEST    tests/qapi-schema/struct-data-invalid.out
  TEST    tests/qapi-schema/struct-member-invalid.out
  TEST    tests/qapi-schema/trailing-comma-list.out
  TEST    tests/qapi-schema/trailing-comma-object.out
  TEST    tests/qapi-schema/type-bypass-bad-gen.out
  TEST    tests/qapi-schema/unclosed-list.out
  TEST    tests/qapi-schema/unclosed-object.out
  TEST    tests/qapi-schema/unclosed-string.out
  TEST    tests/qapi-schema/unicode-str.out
  TEST    tests/qapi-schema/union-base-empty.out
  TEST    tests/qapi-schema/union-base-no-discriminator.out
  TEST    tests/qapi-schema/union-branch-case.out
  TEST    tests/qapi-schema/union-clash-branches.out
  TEST    tests/qapi-schema/union-empty.out
  TEST    tests/qapi-schema/union-invalid-base.out
  TEST    tests/qapi-schema/union-optional-branch.out
  TEST    tests/qapi-schema/union-unknown.out
  TEST    tests/qapi-schema/unknown-escape.out
  TEST    tests/qapi-schema/unknown-expr-key.out
  GEN     tests/qapi-schema/doc-good.test.texi
  CC      tests/check-qdict.o
  CC      tests/test-char.o
  CC      tests/check-qnum.o
  CC      tests/check-qstring.o
  CC      tests/check-qlist.o
  CC      tests/check-qnull.o
  CC      tests/check-qjson.o
  CC      tests/check-qlit.o
  CC      tests/test-qobject-output-visitor.o
  GEN     tests/test-qapi-visit.c
  GEN     tests/test-qapi-types.c
  GEN     tests/test-qapi-event.c
  GEN     tests/test-qmp-introspect.c
  CC      tests/test-clone-visitor.o
  CC      tests/test-qobject-input-visitor.o
  CC      tests/test-qmp-commands.o
  GEN     tests/test-qmp-marshal.c
  CC      tests/test-string-input-visitor.o
  CC      tests/test-string-output-visitor.o
  CC      tests/test-qmp-event.o
  CC      tests/test-opts-visitor.o
  CC      tests/test-coroutine.o
  CC      tests/iothread.o
  CC      tests/test-visitor-serialization.o
  CC      tests/test-iov.o
  CC      tests/test-aio.o
  CC      tests/test-aio-multithread.o
  CC      tests/test-throttle.o
  CC      tests/test-thread-pool.o
  CC      tests/test-blockjob.o
  CC      tests/test-hbitmap.o
  CC      tests/test-blockjob-txn.o
  CC      tests/test-x86-cpuid.o
  CC      tests/test-vmstate.o
  CC      tests/test-xbzrle.o
  CC      tests/test-cutils.o
  CC      tests/test-shift128.o
  CC      tests/test-mul64.o
  CC      tests/test-int128.o
  CC      tests/rcutorture.o
  CC      tests/test-rcu-list.o
  CC      tests/test-qdist.o
/tmp/qemu-test/src/tests/test-int128.c:180: warning: '__noclone__' attribute directive ignored
  CC      tests/test-qht.o
  CC      tests/test-qht-par.o
  CC      tests/test-bitops.o
  CC      tests/qht-bench.o
  CC      tests/test-bitcnt.o
  CC      tests/check-qom-interface.o
  CC      tests/check-qom-proplist.o
  CC      tests/test-qemu-opts.o
  CC      tests/test-keyval.o
  CC      tests/test-write-threshold.o
  CC      tests/test-crypto-hash.o
  CC      tests/test-crypto-hmac.o
  CC      tests/test-crypto-cipher.o
  CC      tests/test-crypto-secret.o
  CC      tests/test-qga.o
  CC      tests/libqtest.o
  CC      tests/test-timed-average.o
  CC      tests/test-io-task.o
  CC      tests/test-io-channel-socket.o
  CC      tests/io-channel-helpers.o
  CC      tests/test-io-channel-file.o
  CC      tests/test-io-channel-command.o
  CC      tests/test-io-channel-buffer.o
  CC      tests/test-base64.o
  CC      tests/test-crypto-ivgen.o
  CC      tests/test-crypto-afsplit.o
  CC      tests/test-crypto-xts.o
  CC      tests/test-crypto-block.o
  CC      tests/test-logging.o
  CC      tests/test-replication.o
  CC      tests/test-bufferiszero.o
  CC      tests/test-uuid.o
  CC      tests/ptimer-test.o
  CC      tests/ptimer-test-stubs.o
  CC      tests/test-qapi-util.o
  CC      tests/vhost-user-test.o
  CC      tests/libqos/pci.o
  CC      tests/libqos/fw_cfg.o
  CC      tests/libqos/malloc.o
  CC      tests/libqos/i2c.o
  CC      tests/libqos/libqos.o
  CC      tests/libqos/malloc-spapr.o
  CC      tests/libqos/libqos-spapr.o
  CC      tests/libqos/rtas.o
  CC      tests/libqos/pci-pc.o
  CC      tests/libqos/malloc-pc.o
  CC      tests/libqos/pci-spapr.o
  CC      tests/libqos/libqos-pc.o
  CC      tests/libqos/ahci.o
  CC      tests/libqos/virtio.o
  CC      tests/libqos/virtio-mmio.o
  CC      tests/libqos/virtio-pci.o
  CC      tests/libqos/malloc-generic.o
  CC      tests/endianness-test.o
  CC      tests/fdc-test.o
  CC      tests/ide-test.o
  CC      tests/hd-geo-test.o
  CC      tests/ahci-test.o
  CC      tests/boot-order-test.o
  CC      tests/bios-tables-test.o
  CC      tests/boot-sector.o
  CC      tests/acpi-utils.o
  CC      tests/boot-serial-test.o
  CC      tests/pxe-test.o
  CC      tests/rtc-test.o
  CC      tests/ipmi-kcs-test.o
  CC      tests/ipmi-bt-test.o
  CC      tests/i440fx-test.o
  CC      tests/fw_cfg-test.o
  CC      tests/drive_del-test.o
  CC      tests/wdt_ib700-test.o
  CC      tests/e1000-test.o
  CC      tests/tco-test.o
  CC      tests/pcnet-test.o
  CC      tests/e1000e-test.o
  CC      tests/eepro100-test.o
  CC      tests/rtl8139-test.o
  CC      tests/ne2000-test.o
  CC      tests/nvme-test.o
  CC      tests/ac97-test.o
  CC      tests/es1370-test.o
  CC      tests/virtio-net-test.o
  CC      tests/virtio-balloon-test.o
  CC      tests/virtio-blk-test.o
  CC      tests/virtio-rng-test.o
  CC      tests/virtio-scsi-test.o
  CC      tests/virtio-serial-test.o
  CC      tests/virtio-console-test.o
  CC      tests/tpci200-test.o
  CC      tests/ipoctal232-test.o
  CC      tests/intel-hda-test.o
  CC      tests/display-vga-test.o
  CC      tests/ivshmem-test.o
  CC      tests/megasas-test.o
  CC      tests/vmxnet3-test.o
  CC      tests/pvpanic-test.o
  CC      tests/i82801b11-test.o
  CC      tests/ioh3420-test.o
  CC      tests/libqos/usb.o
  CC      tests/usb-hcd-ohci-test.o
  CC      tests/usb-hcd-uhci-test.o
  CC      tests/usb-hcd-ehci-test.o
  CC      tests/usb-hcd-xhci-test.o
  CC      tests/pc-cpu-test.o
  CC      tests/q35-test.o
  CC      tests/vmgenid-test.o
  CC      tests/test-netfilter.o
  CC      tests/test-filter-mirror.o
  CC      tests/test-filter-redirector.o
  CC      tests/migration-test.o
  CC      tests/test-x86-cpuid-compat.o
  CC      tests/numa-test.o
  CC      tests/qmp-test.o
  CC      tests/device-introspect-test.o
  CC      tests/qom-test.o
  CC      tests/test-hmp.o
  LINK    tests/check-qdict
  LINK    tests/test-char
  LINK    tests/check-qnum
  LINK    tests/check-qstring
  LINK    tests/check-qlist
  LINK    tests/check-qnull
  LINK    tests/check-qjson
  LINK    tests/check-qlit
  CC      tests/test-qapi-types.o
  CC      tests/test-qapi-visit.o
  CC      tests/test-qapi-event.o
  CC      tests/test-qmp-introspect.o
  CC      tests/test-qmp-marshal.o
  LINK    tests/test-coroutine
  LINK    tests/test-visitor-serialization
  LINK    tests/test-iov
  LINK    tests/test-aio
  LINK    tests/test-aio-multithread
  LINK    tests/test-throttle
  LINK    tests/test-thread-pool
  LINK    tests/test-hbitmap
  LINK    tests/test-blockjob
  LINK    tests/test-blockjob-txn
  LINK    tests/test-x86-cpuid
  LINK    tests/test-xbzrle
  LINK    tests/test-vmstate
  LINK    tests/test-cutils
  LINK    tests/test-shift128
  LINK    tests/test-mul64
  LINK    tests/test-int128
  LINK    tests/rcutorture
  LINK    tests/test-rcu-list
  LINK    tests/test-qdist
  LINK    tests/test-qht
  LINK    tests/qht-bench
  LINK    tests/test-bitops
  LINK    tests/test-bitcnt
  LINK    tests/check-qom-interface
  LINK    tests/check-qom-proplist
  LINK    tests/test-qemu-opts
  LINK    tests/test-keyval
  LINK    tests/test-write-threshold
  LINK    tests/test-crypto-hash
  LINK    tests/test-crypto-hmac
  LINK    tests/test-crypto-cipher
  LINK    tests/test-crypto-secret
  LINK    tests/test-qga
  LINK    tests/test-timed-average
  LINK    tests/test-io-task
  LINK    tests/test-io-channel-socket
  LINK    tests/test-io-channel-file
  LINK    tests/test-io-channel-command
  LINK    tests/test-io-channel-buffer
  LINK    tests/test-base64
  LINK    tests/test-crypto-ivgen
  LINK    tests/test-crypto-afsplit
  LINK    tests/test-crypto-xts
  LINK    tests/test-crypto-block
  LINK    tests/test-logging
  LINK    tests/test-replication
  LINK    tests/test-bufferiszero
  LINK    tests/test-uuid
  LINK    tests/ptimer-test
  LINK    tests/test-qapi-util
  LINK    tests/vhost-user-test
  LINK    tests/endianness-test
  LINK    tests/fdc-test
  LINK    tests/ide-test
  LINK    tests/ahci-test
  LINK    tests/hd-geo-test
  LINK    tests/boot-order-test
  LINK    tests/bios-tables-test
  LINK    tests/boot-serial-test
  LINK    tests/pxe-test
  LINK    tests/rtc-test
  LINK    tests/ipmi-kcs-test
  LINK    tests/ipmi-bt-test
  LINK    tests/i440fx-test
  LINK    tests/fw_cfg-test
  LINK    tests/drive_del-test
  LINK    tests/wdt_ib700-test
  LINK    tests/tco-test
  LINK    tests/e1000-test
  LINK    tests/e1000e-test
  LINK    tests/rtl8139-test
  LINK    tests/pcnet-test
  LINK    tests/eepro100-test
  LINK    tests/ne2000-test
  LINK    tests/nvme-test
  LINK    tests/ac97-test
  LINK    tests/es1370-test
  LINK    tests/virtio-net-test
  LINK    tests/virtio-balloon-test
  LINK    tests/virtio-blk-test
  LINK    tests/virtio-rng-test
  LINK    tests/virtio-scsi-test
  LINK    tests/virtio-serial-test
  LINK    tests/virtio-console-test
  LINK    tests/tpci200-test
  LINK    tests/ipoctal232-test
  LINK    tests/display-vga-test
  LINK    tests/intel-hda-test
  LINK    tests/ivshmem-test
  LINK    tests/megasas-test
  LINK    tests/vmxnet3-test
  LINK    tests/pvpanic-test
  LINK    tests/i82801b11-test
  LINK    tests/ioh3420-test
  LINK    tests/usb-hcd-ohci-test
  LINK    tests/usb-hcd-uhci-test
  LINK    tests/usb-hcd-ehci-test
  LINK    tests/usb-hcd-xhci-test
  LINK    tests/pc-cpu-test
  LINK    tests/q35-test
  LINK    tests/vmgenid-test
  LINK    tests/test-netfilter
  LINK    tests/test-filter-mirror
  LINK    tests/test-filter-redirector
  LINK    tests/migration-test
  LINK    tests/test-x86-cpuid-compat
  LINK    tests/numa-test
  LINK    tests/qmp-test
  LINK    tests/device-introspect-test
  LINK    tests/qom-test
  LINK    tests/test-hmp
  GTESTER tests/test-char
  GTESTER tests/check-qdict
  GTESTER tests/check-qnum
  GTESTER tests/check-qstring
  GTESTER tests/check-qlist
  GTESTER tests/check-qjson
  GTESTER tests/check-qnull
  GTESTER tests/check-qlit
  LINK    tests/test-qobject-output-visitor
  LINK    tests/test-clone-visitor
  LINK    tests/test-qobject-input-visitor
  LINK    tests/test-qmp-commands
  LINK    tests/test-string-input-visitor
  LINK    tests/test-string-output-visitor
  LINK    tests/test-qmp-event
  LINK    tests/test-opts-visitor
  GTESTER tests/test-coroutine
  GTESTER tests/test-iov
  GTESTER tests/test-visitor-serialization
  GTESTER tests/test-aio
  GTESTER tests/test-aio-multithread
  GTESTER tests/test-throttle
  GTESTER tests/test-thread-pool
  GTESTER tests/test-hbitmap
  GTESTER tests/test-blockjob
  GTESTER tests/test-blockjob-txn
  GTESTER tests/test-x86-cpuid
  GTESTER tests/test-xbzrle
  GTESTER tests/test-vmstate
Failed to load simple/primitive:b_1
Failed to load simple/primitive:i64_2
Failed to load simple/primitive:i32_1
Failed to load simple/primitive:i32_1
Failed to load test/with_tmp:a
Failed to load test/tmp_child_parent:f
Failed to load test/tmp_child:parent
Failed to load test/with_tmp:tmp
Failed to load test/tmp_child:diff
Failed to load test/with_tmp:tmp
Failed to load test/tmp_child:diff
Failed to load test/with_tmp:tmp
  GTESTER tests/test-cutils
  GTESTER tests/test-shift128
  GTESTER tests/test-mul64
  GTESTER tests/rcutorture
  GTESTER tests/test-int128
  GTESTER tests/test-rcu-list
  GTESTER tests/test-qdist
  GTESTER tests/test-qht
  LINK    tests/test-qht-par
  GTESTER tests/test-bitops
  GTESTER tests/test-bitcnt
  GTESTER tests/check-qom-interface
  GTESTER tests/check-qom-proplist
  GTESTER tests/test-qemu-opts
  GTESTER tests/test-keyval
  GTESTER tests/test-write-threshold
  GTESTER tests/test-crypto-hash
  GTESTER tests/test-crypto-hmac
  GTESTER tests/test-crypto-cipher
  GTESTER tests/test-crypto-secret
  GTESTER tests/test-qga
  GTESTER tests/test-timed-average
  GTESTER tests/test-io-task
  GTESTER tests/test-io-channel-socket
  GTESTER tests/test-io-channel-file
  GTESTER tests/test-io-channel-command
  GTESTER tests/test-io-channel-buffer
  GTESTER tests/test-base64
  GTESTER tests/test-crypto-ivgen
  GTESTER tests/test-crypto-afsplit
  GTESTER tests/test-crypto-block
  GTESTER tests/test-logging
  GTESTER tests/test-replication
  GTESTER tests/test-crypto-xts
  GTESTER tests/test-bufferiszero
  GTESTER tests/test-uuid
  GTESTER tests/ptimer-test
  GTESTER tests/test-qapi-util
  GTESTER check-qtest-x86_64
  GTESTER check-qtest-aarch64
  GTESTER tests/test-qobject-output-visitor
  GTESTER tests/test-clone-visitor
  GTESTER tests/test-qobject-input-visitor
  GTESTER tests/test-qmp-commands
  GTESTER tests/test-string-input-visitor
  GTESTER tests/test-string-output-visitor
  GTESTER tests/test-qmp-event
  GTESTER tests/test-opts-visitor
  GTESTER tests/test-qht-par
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: failed to initialize KVM: No such file or directory
qemu-system-x86_64: Back to tcg accelerator
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: failed to initialize KVM: No such file or directory
qemu-system-x86_64: Back to tcg accelerator
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: failed to initialize KVM: No such file or directory
qemu-system-x86_64: Back to tcg accelerator
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: failed to initialize KVM: No such file or directory
qemu-system-x86_64: Back to tcg accelerator
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: failed to initialize KVM: No such file or directory
qemu-system-x86_64: Back to tcg accelerator
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: failed to initialize KVM: No such file or directory
qemu-system-x86_64: Back to tcg accelerator
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: failed to initialize KVM: No such file or directory
qemu-system-x86_64: Back to tcg accelerator
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: failed to initialize KVM: No such file or directory
qemu-system-x86_64: Back to tcg accelerator
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: failed to initialize KVM: No such file or directory
qemu-system-x86_64: Back to tcg accelerator
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: failed to initialize KVM: No such file or directory
qemu-system-x86_64: Back to tcg accelerator
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: failed to initialize KVM: No such file or directory
qemu-system-x86_64: Back to tcg accelerator
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: failed to initialize KVM: No such file or directory
qemu-system-x86_64: Back to tcg accelerator
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: failed to initialize KVM: No such file or directory
qemu-system-x86_64: Back to tcg accelerator
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: failed to initialize KVM: No such file or directory
qemu-system-x86_64: Back to tcg accelerator
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: failed to initialize KVM: No such file or directory
qemu-system-x86_64: Back to tcg accelerator
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: failed to initialize KVM: No such file or directory
qemu-system-x86_64: Back to tcg accelerator
Could not access KVM kernel module: No such file or directory
qemu-system-x86_64: failed to initialize KVM: No such file or directory
qemu-system-x86_64: Back to tcg accelerator
mkdir -p dtc/libfdt
mkdir -p dtc/tests
install -d -m 0755 "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/share/qemu"
install -d -m 0755 "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/var"/run
install -d -m 0755 "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin"
install -c -m 0755 qemu-ga ivshmem-client ivshmem-server qemu-nbd qemu-img qemu-io  scsi/qemu-pr-helper "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin"
strip "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin/qemu-ga" "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin/ivshmem-client" "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin/ivshmem-server" "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin/qemu-nbd" "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin/qemu-img" "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin/qemu-io" "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin/qemu-pr-helper"
install -d -m 0755 "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/libexec"
install -c -m 0755 qemu-bridge-helper "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/libexec"
strip "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/libexec/qemu-bridge-helper"
set -e; for x in bios.bin bios-256k.bin sgabios.bin vgabios.bin vgabios-cirrus.bin vgabios-stdvga.bin vgabios-vmware.bin vgabios-qxl.bin vgabios-virtio.bin acpi-dsdt.aml ppc_rom.bin openbios-sparc32 openbios-sparc64 openbios-ppc QEMU,tcx.bin QEMU,cgthree.bin pxe-e1000.rom pxe-eepro100.rom pxe-ne2k_pci.rom pxe-pcnet.rom pxe-rtl8139.rom pxe-virtio.rom efi-e1000.rom efi-eepro100.rom efi-ne2k_pci.rom efi-pcnet.rom efi-rtl8139.rom efi-virtio.rom efi-e1000e.rom efi-vmxnet3.rom qemu-icon.bmp qemu_logo_no_text.svg bamboo.dtb petalogix-s3adsp1800.dtb petalogix-ml605.dtb multiboot.bin linuxboot.bin linuxboot_dma.bin kvmvapic.bin s390-ccw.img s390-netboot.img spapr-rtas.bin slof.bin skiboot.lid palcode-clipper u-boot.e500 qemu_vga.ndrv; do \
		install -c -m 0644 /tmp/qemu-test/src/pc-bios/$x "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/share/qemu"; \
	done
make -C po install
make[1]: Entering directory `/tmp/qemu-test/build/po'
  GEN     /tmp/qemu-test/src/po/messages.po
  GEN     /tmp/qemu-test/src/po/bg.po
  GEN     /tmp/qemu-test/src/po/de_DE.po
  GEN     /tmp/qemu-test/src/po/hu.po
  GEN     /tmp/qemu-test/src/po/tr.po
  GEN     /tmp/qemu-test/src/po/it.po
  GEN     /tmp/qemu-test/src/po/zh_CN.po
  GEN     /tmp/qemu-test/src/po/fr_FR.po
  GEN     de_DE.mo
  GEN     bg.mo
  GEN     hu.mo
  GEN     it.mo
  GEN     tr.mo
  GEN     zh_CN.mo
  GEN     fr_FR.mo
for obj in bg.mo de_DE.mo fr_FR.mo hu.mo it.mo tr.mo zh_CN.mo; do \
	    base=`basename $obj .mo`; \
	    install -d /tmp/qemu-test/build/=destdir/tmp/qemu-test/install/share/locale/$base/LC_MESSAGES; \
	    install -m644 $obj /tmp/qemu-test/build/=destdir/tmp/qemu-test/install/share/locale/$base/LC_MESSAGES/qemu.mo; \
	done
make[1]: Leaving directory `/tmp/qemu-test/build/po'
install -d -m 0755 "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/share/qemu/keymaps"
set -e; for x in da     en-gb  et  fr     fr-ch  is  lt  modifiers  no  pt-br  sv ar      de     en-us  fi  fr-be  hr     it  lv  nl         pl  ru     th common  de-ch  es     fo  fr-ca  hu     ja  mk  nl-be      pt  sl     tr bepo    cz; do \
		install -c -m 0644 /tmp/qemu-test/src/pc-bios/keymaps/$x "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/share/qemu/keymaps"; \
	done
install -c -m 0644 /tmp/qemu-test/build/trace-events-all "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/share/qemu/trace-events-all"
for d in x86_64-softmmu aarch64-softmmu; do \
	make --no-print-directory BUILD_DIR=/tmp/qemu-test/build TARGET_DIR=$d/ -C $d install || exit 1 ; \
        done
install -d -m 0755 "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin"
install -c -m 0755 qemu-system-x86_64  "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin"
strip "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin/qemu-system-x86_64"
install -d -m 0755 "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin"
install -c -m 0755 qemu-system-aarch64  "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin"
strip "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin/qemu-system-aarch64"
    CLEANUP /var/tmp/patchew-tester-tmp-g_i2minb/src/docker-src.2017-10-31-14.21.13.18423 
make[1]: Leaving directory '/var/tmp/patchew-tester-tmp-g_i2minb/src'

real	7m12.434s
user	0m4.650s
sys	0m4.328s
  BUILD   min-glib
make[1]: Entering directory '/var/tmp/patchew-tester-tmp-g_i2minb/src'
  GEN     /var/tmp/patchew-tester-tmp-g_i2minb/src/docker-src.2017-10-31-14.28.25.30666/qemu.tar
Cloning into '/var/tmp/patchew-tester-tmp-g_i2minb/src/docker-src.2017-10-31-14.28.25.30666/qemu.tar.vroot'...
done.
Checking out files:  26% (1485/5658)   
Checking out files:  27% (1528/5658)   
Checking out files:  28% (1585/5658)   
Checking out files:  29% (1641/5658)   
Checking out files:  30% (1698/5658)   
Checking out files:  31% (1754/5658)   
Checking out files:  32% (1811/5658)   
Checking out files:  33% (1868/5658)   
Checking out files:  34% (1924/5658)   
Checking out files:  35% (1981/5658)   
Checking out files:  36% (2037/5658)   
Checking out files:  37% (2094/5658)   
Checking out files:  38% (2151/5658)   
Checking out files:  39% (2207/5658)   
Checking out files:  40% (2264/5658)   
Checking out files:  41% (2320/5658)   
Checking out files:  42% (2377/5658)   
Checking out files:  43% (2433/5658)   
Checking out files:  44% (2490/5658)   
Checking out files:  45% (2547/5658)   
Checking out files:  46% (2603/5658)   
Checking out files:  47% (2660/5658)   
Checking out files:  48% (2716/5658)   
Checking out files:  49% (2773/5658)   
Checking out files:  50% (2829/5658)   
Checking out files:  51% (2886/5658)   
Checking out files:  52% (2943/5658)   
Checking out files:  53% (2999/5658)   
Checking out files:  54% (3056/5658)   
Checking out files:  55% (3112/5658)   
Checking out files:  56% (3169/5658)   
Checking out files:  57% (3226/5658)   
Checking out files:  58% (3282/5658)   
Checking out files:  59% (3339/5658)   
Checking out files:  60% (3395/5658)   
Checking out files:  61% (3452/5658)   
Checking out files:  62% (3508/5658)   
Checking out files:  63% (3565/5658)   
Checking out files:  64% (3622/5658)   
Checking out files:  65% (3678/5658)   
Checking out files:  66% (3735/5658)   
Checking out files:  67% (3791/5658)   
Checking out files:  68% (3848/5658)   
Checking out files:  69% (3905/5658)   
Checking out files:  70% (3961/5658)   
Checking out files:  71% (4018/5658)   
Checking out files:  72% (4074/5658)   
Checking out files:  73% (4131/5658)   
Checking out files:  74% (4187/5658)   
Checking out files:  74% (4242/5658)   
Checking out files:  75% (4244/5658)   
Checking out files:  76% (4301/5658)   
Checking out files:  77% (4357/5658)   
Checking out files:  78% (4414/5658)   
Checking out files:  79% (4470/5658)   
Checking out files:  80% (4527/5658)   
Checking out files:  81% (4583/5658)   
Checking out files:  82% (4640/5658)   
Checking out files:  83% (4697/5658)   
Checking out files:  84% (4753/5658)   
Checking out files:  85% (4810/5658)   
Checking out files:  86% (4866/5658)   
Checking out files:  87% (4923/5658)   
Checking out files:  88% (4980/5658)   
Checking out files:  89% (5036/5658)   
Checking out files:  90% (5093/5658)   
Checking out files:  91% (5149/5658)   
Checking out files:  92% (5206/5658)   
Checking out files:  93% (5262/5658)   
Checking out files:  94% (5319/5658)   
Checking out files:  95% (5376/5658)   
Checking out files:  96% (5432/5658)   
Checking out files:  97% (5489/5658)   
Checking out files:  98% (5545/5658)   
Checking out files:  99% (5602/5658)   
Checking out files: 100% (5658/5658)   
Checking out files: 100% (5658/5658), done.
Your branch is up-to-date with 'origin/test'.
Submodule 'dtc' (git://git.qemu-project.org/dtc.git) registered for path 'dtc'
Cloning into '/var/tmp/patchew-tester-tmp-g_i2minb/src/docker-src.2017-10-31-14.28.25.30666/qemu.tar.vroot/dtc'...
Submodule path 'dtc': checked out '558cd81bdd432769b59bff01240c44f82cfb1a9d'
Submodule 'ui/keycodemapdb' (git://git.qemu.org/keycodemapdb.git) registered for path 'ui/keycodemapdb'
Cloning into '/var/tmp/patchew-tester-tmp-g_i2minb/src/docker-src.2017-10-31-14.28.25.30666/qemu.tar.vroot/ui/keycodemapdb'...
Submodule path 'ui/keycodemapdb': checked out '10739aa26051a5d49d88132604539d3ed085e72e'
  COPY    RUNNER
    RUN test-build in qemu:min-glib 
Environment variables:
HOSTNAME=e919ad5a5b8b
MAKEFLAGS= -j8
J=8
CCACHE_DIR=/var/tmp/ccache
EXTRA_CONFIGURE_OPTS=
V=
SHOW_ENV=1
PATH=/usr/lib/ccache:/usr/lib64/ccache:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
PWD=/
TARGET_LIST=
SHLVL=1
HOME=/root
TEST_DIR=/tmp/qemu-test
FEATURES= dtc
DEBUG=
_=/usr/bin/env

Configure options:
--enable-werror --target-list=x86_64-softmmu,aarch64-softmmu --prefix=/tmp/qemu-test/install
No C++ compiler available; disabling C++ specific optional code
Install prefix    /tmp/qemu-test/install
BIOS directory    /tmp/qemu-test/install/share/qemu
firmware path     /tmp/qemu-test/install/share/qemu-firmware
binary directory  /tmp/qemu-test/install/bin
library directory /tmp/qemu-test/install/lib
module directory  /tmp/qemu-test/install/lib/qemu
libexec directory /tmp/qemu-test/install/libexec
include directory /tmp/qemu-test/install/include
config directory  /tmp/qemu-test/install/etc
local state directory   /tmp/qemu-test/install/var
Manual directory  /tmp/qemu-test/install/share/man
ELF interp prefix /usr/gnemul/qemu-%M
Source path       /tmp/qemu-test/src
GIT submodules    
C compiler        cc
Host C compiler   cc
C++ compiler      
Objective-C compiler cc
ARFLAGS           rv
CFLAGS            -O2 -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -g 
QEMU_CFLAGS       -I/usr/include/pixman-1   -I$(SRC_PATH)/dtc/libfdt -pthread -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include   -fPIE -DPIE -m64 -mcx16 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wall -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv  -Wendif-labels -Wno-missing-include-dirs -Wempty-body -Wnested-externs -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wold-style-declaration -Wold-style-definition -Wtype-limits -fstack-protector-all
LDFLAGS           -Wl,--warn-common -Wl,-z,relro -Wl,-z,now -pie -m64 -g 
make              make
install           install
python            python -B
smbd              /usr/sbin/smbd
module support    no
host CPU          x86_64
host big endian   no
target list       x86_64-softmmu aarch64-softmmu
gprof enabled     no
sparse enabled    no
strip binaries    yes
profiler          no
static build      no
SDL support       yes (1.2.14)
GTK support       no 
GTK GL support    no
VTE support       no 
TLS priority      NORMAL
GNUTLS support    no
GNUTLS rnd        no
libgcrypt         no
libgcrypt kdf     no
nettle            no 
nettle kdf        no
libtasn1          no
curses support    no
virgl support     no
curl support      no
mingw32 support   no
Audio drivers     oss
Block whitelist (rw) 
Block whitelist (ro) 
VirtFS support    no
Multipath support no
VNC support       yes
VNC SASL support  no
VNC JPEG support  no
VNC PNG support   no
xen support       no
brlapi support    no
bluez  support    no
Documentation     no
PIE               yes
vde support       no
netmap support    no
Linux AIO support no
ATTR/XATTR support yes
Install blobs     yes
KVM support       yes
HAX support       no
TCG support       yes
TCG debug enabled no
TCG interpreter   no
RDMA support      no
fdt support       yes
preadv support    yes
fdatasync         yes
madvise           yes
posix_madvise     yes
libcap-ng support no
vhost-net support yes
vhost-scsi support yes
vhost-vsock support yes
vhost-user support yes
Trace backends    log
spice support     no 
rbd support       no
xfsctl support    no
smartcard support no
libusb            no
usb net redir     no
OpenGL support    no
OpenGL dmabufs    no
libiscsi support  no
libnfs support    no
build guest agent yes
QGA VSS support   no
QGA w32 disk info no
QGA MSI support   no
seccomp support   no
coroutine backend ucontext
coroutine pool    yes
debug stack usage no
crypto afalg      no
GlusterFS support no
gcov              gcov
gcov enabled      no
TPM support       yes
libssh2 support   no
TPM passthrough   yes
TPM emulator      yes
QOM debugging     yes
Live block migration yes
lzo support       no
snappy support    no
bzip2 support     no
NUMA host support no
tcmalloc support  no
jemalloc support  no
avx2 optimization no
replication support yes
VxHS block device no
capstone          no
mkdir -p dtc/libfdt
  GEN     x86_64-softmmu/config-devices.mak.tmp
  GEN     aarch64-softmmu/config-devices.mak.tmp
  GEN     config-host.h
mkdir -p dtc/tests
  GEN     qemu-options.def
  GEN     qapi-types.h
  GEN     qmp-commands.h
  GEN     qapi-visit.h
  GEN     qapi-event.h
  GEN     x86_64-softmmu/config-devices.mak
  GEN     qmp-marshal.c
  GEN     aarch64-softmmu/config-devices.mak
  GEN     qapi-types.c
  GEN     qapi-visit.c
  GEN     qapi-event.c
  GEN     qmp-introspect.h
  GEN     qmp-introspect.c
  GEN     trace/generated-tcg-tracers.h
  GEN     trace/generated-helpers-wrappers.h
  GEN     trace/generated-helpers.h
  GEN     trace/generated-helpers.c
  GEN     module_block.h
  GEN     ui/input-keymap-linux-to-qcode.c
  GEN     ui/input-keymap-qcode-to-qnum.c
  GEN     ui/input-keymap-qnum-to-qcode.c
  GEN     tests/test-qapi-types.h
  GEN     tests/test-qapi-visit.h
  GEN     tests/test-qmp-commands.h
  GEN     tests/test-qapi-event.h
  GEN     tests/test-qmp-introspect.h
  GEN     trace-root.h
  GEN     util/trace.h
  GEN     crypto/trace.h
  GEN     io/trace.h
  GEN     migration/trace.h
  GEN     block/trace.h
  GEN     chardev/trace.h
  GEN     hw/block/trace.h
  GEN     hw/block/dataplane/trace.h
  GEN     hw/char/trace.h
  GEN     hw/intc/trace.h
  GEN     hw/net/trace.h
  GEN     hw/virtio/trace.h
  GEN     hw/audio/trace.h
  GEN     hw/misc/trace.h
  GEN     hw/usb/trace.h
  GEN     hw/scsi/trace.h
  GEN     hw/nvram/trace.h
  GEN     hw/display/trace.h
  GEN     hw/input/trace.h
  GEN     hw/timer/trace.h
  GEN     hw/dma/trace.h
  GEN     hw/sparc/trace.h
  GEN     hw/sd/trace.h
  GEN     hw/isa/trace.h
  GEN     hw/mem/trace.h
  GEN     hw/i386/trace.h
  GEN     hw/i386/xen/trace.h
  GEN     hw/9pfs/trace.h
  GEN     hw/ppc/trace.h
  GEN     hw/pci/trace.h
  GEN     hw/s390x/trace.h
  GEN     hw/vfio/trace.h
  GEN     hw/acpi/trace.h
  GEN     hw/arm/trace.h
  GEN     hw/alpha/trace.h
  GEN     hw/xen/trace.h
  GEN     hw/ide/trace.h
  GEN     ui/trace.h
  GEN     audio/trace.h
  GEN     net/trace.h
  GEN     target/arm/trace.h
  GEN     target/i386/trace.h
  GEN     target/mips/trace.h
  GEN     target/sparc/trace.h
  GEN     target/s390x/trace.h
  GEN     target/ppc/trace.h
  GEN     qom/trace.h
  GEN     linux-user/trace.h
  GEN     qapi/trace.h
  GEN     accel/tcg/trace.h
  GEN     accel/kvm/trace.h
  GEN     nbd/trace.h
  GEN     scsi/trace.h
  GEN     trace-root.c
  GEN     util/trace.c
  GEN     crypto/trace.c
  GEN     io/trace.c
  GEN     migration/trace.c
  GEN     block/trace.c
  GEN     chardev/trace.c
  GEN     hw/block/trace.c
  GEN     hw/block/dataplane/trace.c
  GEN     hw/char/trace.c
  GEN     hw/intc/trace.c
  GEN     hw/net/trace.c
  GEN     hw/virtio/trace.c
  GEN     hw/audio/trace.c
  GEN     hw/misc/trace.c
  GEN     hw/usb/trace.c
  GEN     hw/scsi/trace.c
  GEN     hw/nvram/trace.c
  GEN     hw/display/trace.c
  GEN     hw/input/trace.c
  GEN     hw/timer/trace.c
  GEN     hw/dma/trace.c
  GEN     hw/sparc/trace.c
  GEN     hw/sd/trace.c
  GEN     hw/isa/trace.c
  GEN     hw/mem/trace.c
  GEN     hw/i386/trace.c
  GEN     hw/i386/xen/trace.c
  GEN     hw/9pfs/trace.c
  GEN     hw/ppc/trace.c
  GEN     hw/pci/trace.c
  GEN     hw/s390x/trace.c
  GEN     hw/vfio/trace.c
  GEN     hw/acpi/trace.c
  GEN     hw/arm/trace.c
  GEN     hw/alpha/trace.c
  GEN     hw/xen/trace.c
  GEN     hw/ide/trace.c
  GEN     ui/trace.c
  GEN     audio/trace.c
  GEN     net/trace.c
  GEN     target/arm/trace.c
  GEN     target/i386/trace.c
  GEN     target/mips/trace.c
  GEN     target/sparc/trace.c
  GEN     target/s390x/trace.c
  GEN     target/ppc/trace.c
  GEN     qom/trace.c
  GEN     linux-user/trace.c
  GEN     qapi/trace.c
  GEN     accel/tcg/trace.c
  GEN     accel/kvm/trace.c
  GEN     nbd/trace.c
  GEN     scsi/trace.c
  GEN     config-all-devices.mak
	 DEP /tmp/qemu-test/src/dtc/tests/dumptrees.c
	 DEP /tmp/qemu-test/src/dtc/tests/trees.S
	 DEP /tmp/qemu-test/src/dtc/tests/testutils.c
	 DEP /tmp/qemu-test/src/dtc/tests/value-labels.c
	 DEP /tmp/qemu-test/src/dtc/tests/asm_tree_dump.c
	 DEP /tmp/qemu-test/src/dtc/tests/truncated_property.c
	 DEP /tmp/qemu-test/src/dtc/tests/check_path.c
	 DEP /tmp/qemu-test/src/dtc/tests/overlay_bad_fixup.c
	 DEP /tmp/qemu-test/src/dtc/tests/overlay.c
	 DEP /tmp/qemu-test/src/dtc/tests/subnode_iterate.c
	 DEP /tmp/qemu-test/src/dtc/tests/property_iterate.c
	 DEP /tmp/qemu-test/src/dtc/tests/integer-expressions.c
	 DEP /tmp/qemu-test/src/dtc/tests/utilfdt_test.c
	 DEP /tmp/qemu-test/src/dtc/tests/path_offset_aliases.c
	 DEP /tmp/qemu-test/src/dtc/tests/add_subnode_with_nops.c
	 DEP /tmp/qemu-test/src/dtc/tests/dtbs_equal_unordered.c
	 DEP /tmp/qemu-test/src/dtc/tests/dtb_reverse.c
	 DEP /tmp/qemu-test/src/dtc/tests/dtbs_equal_ordered.c
	 DEP /tmp/qemu-test/src/dtc/tests/extra-terminating-null.c
	 DEP /tmp/qemu-test/src/dtc/tests/incbin.c
	 DEP /tmp/qemu-test/src/dtc/tests/boot-cpuid.c
	 DEP /tmp/qemu-test/src/dtc/tests/phandle_format.c
	 DEP /tmp/qemu-test/src/dtc/tests/path-references.c
	 DEP /tmp/qemu-test/src/dtc/tests/references.c
	 DEP /tmp/qemu-test/src/dtc/tests/string_escapes.c
	 DEP /tmp/qemu-test/src/dtc/tests/propname_escapes.c
	 DEP /tmp/qemu-test/src/dtc/tests/appendprop2.c
	 DEP /tmp/qemu-test/src/dtc/tests/appendprop1.c
	 DEP /tmp/qemu-test/src/dtc/tests/del_node.c
	 DEP /tmp/qemu-test/src/dtc/tests/del_property.c
	 DEP /tmp/qemu-test/src/dtc/tests/setprop.c
	 DEP /tmp/qemu-test/src/dtc/tests/set_name.c
	 DEP /tmp/qemu-test/src/dtc/tests/rw_tree1.c
	 DEP /tmp/qemu-test/src/dtc/tests/open_pack.c
	 DEP /tmp/qemu-test/src/dtc/tests/nopulate.c
	 DEP /tmp/qemu-test/src/dtc/tests/mangle-layout.c
	 DEP /tmp/qemu-test/src/dtc/tests/move_and_save.c
	 DEP /tmp/qemu-test/src/dtc/tests/sw_tree1.c
	 DEP /tmp/qemu-test/src/dtc/tests/nop_node.c
	 DEP /tmp/qemu-test/src/dtc/tests/nop_property.c
	 DEP /tmp/qemu-test/src/dtc/tests/setprop_inplace.c
	 DEP /tmp/qemu-test/src/dtc/tests/stringlist.c
	 DEP /tmp/qemu-test/src/dtc/tests/addr_size_cells.c
	 DEP /tmp/qemu-test/src/dtc/tests/notfound.c
	 DEP /tmp/qemu-test/src/dtc/tests/sized_cells.c
	 DEP /tmp/qemu-test/src/dtc/tests/char_literal.c
	 DEP /tmp/qemu-test/src/dtc/tests/get_alias.c
	 DEP /tmp/qemu-test/src/dtc/tests/node_offset_by_compatible.c
	 DEP /tmp/qemu-test/src/dtc/tests/node_check_compatible.c
	 DEP /tmp/qemu-test/src/dtc/tests/node_offset_by_phandle.c
	 DEP /tmp/qemu-test/src/dtc/tests/node_offset_by_prop_value.c
	 DEP /tmp/qemu-test/src/dtc/tests/parent_offset.c
	 DEP /tmp/qemu-test/src/dtc/tests/supernode_atdepth_offset.c
	 DEP /tmp/qemu-test/src/dtc/tests/get_path.c
	 DEP /tmp/qemu-test/src/dtc/tests/get_phandle.c
	 DEP /tmp/qemu-test/src/dtc/tests/getprop.c
	 DEP /tmp/qemu-test/src/dtc/tests/path_offset.c
	 DEP /tmp/qemu-test/src/dtc/tests/get_name.c
	 DEP /tmp/qemu-test/src/dtc/tests/subnode_offset.c
	 DEP /tmp/qemu-test/src/dtc/tests/find_property.c
	 DEP /tmp/qemu-test/src/dtc/tests/root_node.c
	 DEP /tmp/qemu-test/src/dtc/tests/get_mem_rsv.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_overlay.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_addresses.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_empty_tree.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_strerror.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_rw.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_sw.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_wip.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_ro.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt.c
	 DEP /tmp/qemu-test/src/dtc/util.c
	 DEP /tmp/qemu-test/src/dtc/fdtput.c
	 DEP /tmp/qemu-test/src/dtc/fdtget.c
	 DEP /tmp/qemu-test/src/dtc/fdtdump.c
	 LEX convert-dtsv0-lexer.lex.c
make[1]: flex: Command not found
	 DEP /tmp/qemu-test/src/dtc/srcpos.c
	 LEX dtc-lexer.lex.c
make[1]: flex: Command not found
	 BISON dtc-parser.tab.c
	 DEP /tmp/qemu-test/src/dtc/treesource.c
make[1]: bison: Command not found
	 DEP /tmp/qemu-test/src/dtc/livetree.c
	 DEP /tmp/qemu-test/src/dtc/fstree.c
	 DEP /tmp/qemu-test/src/dtc/dtc.c
	 DEP /tmp/qemu-test/src/dtc/flattree.c
	 DEP /tmp/qemu-test/src/dtc/data.c
	 DEP /tmp/qemu-test/src/dtc/checks.c
	CHK version_gen.h
	 BISON dtc-parser.tab.c
	 LEX convert-dtsv0-lexer.lex.c
	 LEX dtc-lexer.lex.c
make[1]: bison: Command not found
make[1]: flex: Command not found
make[1]: flex: Command not found
	UPD version_gen.h
	 DEP /tmp/qemu-test/src/dtc/util.c
	 LEX convert-dtsv0-lexer.lex.c
make[1]: flex: Command not found
	 LEX dtc-lexer.lex.c
	 BISON dtc-parser.tab.c
make[1]: flex: Command not found
make[1]: bison: Command not found
	 CC libfdt/fdt.o
	 CC libfdt/fdt_wip.o
	 CC libfdt/fdt_ro.o
	 CC libfdt/fdt_sw.o
	 CC libfdt/fdt_empty_tree.o
	 CC libfdt/fdt_strerror.o
	 CC libfdt/fdt_rw.o
	 CC libfdt/fdt_addresses.o
	 CC libfdt/fdt_overlay.o
	 AR libfdt/libfdt.a
ar: creating libfdt/libfdt.a
a - libfdt/fdt.o
a - libfdt/fdt_ro.o
a - libfdt/fdt_wip.o
a - libfdt/fdt_sw.o
a - libfdt/fdt_rw.o
a - libfdt/fdt_strerror.o
a - libfdt/fdt_empty_tree.o
a - libfdt/fdt_addresses.o
a - libfdt/fdt_overlay.o
mkdir -p dtc/libfdt
mkdir -p dtc/tests
	 LEX convert-dtsv0-lexer.lex.c
	 BISON dtc-parser.tab.c
make[1]: flex: Command not found
make[1]: bison: Command not found
	 LEX dtc-lexer.lex.c
make[1]: flex: Command not found
  GEN     qga/qapi-generated/qga-qapi-visit.h
  CC      tests/qemu-iotests/socket_scm_helper.o
  GEN     qga/qapi-generated/qga-qapi-types.h
  GEN     qga/qapi-generated/qga-qmp-commands.h
  GEN     qga/qapi-generated/qga-qapi-types.c
  GEN     qga/qapi-generated/qga-qapi-visit.c
  GEN     qga/qapi-generated/qga-qmp-marshal.c
  CC      qmp-introspect.o
  CC      qapi-types.o
  CC      qapi-visit.o
  CC      qapi-event.o
  CC      qapi/qapi-visit-core.o
  CC      qapi/qapi-dealloc-visitor.o
  CC      qapi/qobject-input-visitor.o
  CC      qapi/qobject-output-visitor.o
  CC      qapi/qmp-registry.o
  CC      qapi/qmp-dispatch.o
  CC      qapi/string-input-visitor.o
  CC      qapi/string-output-visitor.o
  CC      qapi/qapi-clone-visitor.o
  CC      qapi/opts-visitor.o
  CC      qapi/qmp-event.o
  CC      qapi/qapi-util.o
  CC      qobject/qnull.o
  CC      qobject/qnum.o
  CC      qobject/qstring.o
  CC      qobject/qdict.o
  CC      qobject/qlist.o
  CC      qobject/qbool.o
  CC      qobject/qlit.o
  CC      qobject/qjson.o
  CC      qobject/qobject.o
  CC      qobject/json-lexer.o
  CC      qobject/json-parser.o
  CC      qobject/json-streamer.o
  CC      trace/control.o
  CC      trace/qmp.o
  CC      util/osdep.o
  CC      util/cutils.o
  CC      util/qemu-timer-common.o
  CC      util/unicode.o
  CC      util/bufferiszero.o
  CC      util/aiocb.o
  CC      util/async.o
  CC      util/thread-pool.o
  CC      util/lockcnt.o
  CC      util/qemu-timer.o
  CC      util/main-loop.o
  CC      util/iohandler.o
  CC      util/aio-posix.o
  CC      util/compatfd.o
  CC      util/event_notifier-posix.o
  CC      util/mmap-alloc.o
  CC      util/oslib-posix.o
  CC      util/qemu-openpty.o
  CC      util/qemu-thread-posix.o
  CC      util/envlist.o
  CC      util/memfd.o
  CC      util/module.o
  CC      util/host-utils.o
  CC      util/bitmap.o
  CC      util/path.o
  CC      util/bitops.o
  CC      util/fifo8.o
  CC      util/hbitmap.o
  CC      util/cacheinfo.o
  CC      util/acl.o
  CC      util/error.o
  CC      util/qemu-error.o
  CC      util/id.o
  CC      util/iov.o
  CC      util/qemu-sockets.o
  CC      util/qemu-config.o
  CC      util/notify.o
  CC      util/uri.o
  CC      util/qemu-option.o
  CC      util/qemu-progress.o
  CC      util/keyval.o
  CC      util/hexdump.o
  CC      util/crc32c.o
  CC      util/uuid.o
  CC      util/throttle.o
  CC      util/getauxval.o
  CC      util/rcu.o
  CC      util/qemu-coroutine.o
  CC      util/readline.o
  CC      util/qemu-coroutine-io.o
  CC      util/qemu-coroutine-sleep.o
  CC      util/coroutine-ucontext.o
  CC      util/qemu-coroutine-lock.o
  CC      util/buffer.o
  CC      util/base64.o
  CC      util/timed-average.o
  CC      util/log.o
  CC      util/pagesize.o
  CC      util/qdist.o
  CC      util/qht.o
  CC      util/range.o
  CC      util/stats64.o
  CC      util/systemd.o
  CC      trace-root.o
  CC      crypto/trace.o
  CC      util/trace.o
  CC      io/trace.o
  CC      migration/trace.o
  CC      block/trace.o
  CC      chardev/trace.o
  CC      hw/block/trace.o
  CC      hw/block/dataplane/trace.o
  CC      hw/char/trace.o
  CC      hw/intc/trace.o
  CC      hw/net/trace.o
  CC      hw/virtio/trace.o
  CC      hw/audio/trace.o
  CC      hw/misc/trace.o
  CC      hw/usb/trace.o
  CC      hw/scsi/trace.o
  CC      hw/display/trace.o
  CC      hw/nvram/trace.o
  CC      hw/input/trace.o
  CC      hw/timer/trace.o
  CC      hw/dma/trace.o
  CC      hw/sd/trace.o
  CC      hw/sparc/trace.o
  CC      hw/isa/trace.o
  CC      hw/mem/trace.o
  CC      hw/i386/trace.o
  CC      hw/i386/xen/trace.o
  CC      hw/9pfs/trace.o
  CC      hw/ppc/trace.o
  CC      hw/pci/trace.o
  CC      hw/s390x/trace.o
  CC      hw/vfio/trace.o
  CC      hw/acpi/trace.o
  CC      hw/arm/trace.o
  CC      hw/alpha/trace.o
  CC      hw/xen/trace.o
  CC      hw/ide/trace.o
  CC      ui/trace.o
  CC      audio/trace.o
  CC      net/trace.o
  CC      target/arm/trace.o
  CC      target/i386/trace.o
  CC      target/mips/trace.o
  CC      target/sparc/trace.o
  CC      target/s390x/trace.o
  CC      target/ppc/trace.o
  CC      qom/trace.o
  CC      linux-user/trace.o
  CC      qapi/trace.o
  CC      accel/tcg/trace.o
  CC      accel/kvm/trace.o
  CC      nbd/trace.o
  CC      scsi/trace.o
  CC      crypto/pbkdf-stub.o
  CC      stubs/arch-query-cpu-def.o
  CC      stubs/arch-query-cpu-model-expansion.o
  CC      stubs/arch-query-cpu-model-comparison.o
  CC      stubs/arch-query-cpu-model-baseline.o
  CC      stubs/bdrv-next-monitor-owned.o
  CC      stubs/blk-commit-all.o
  CC      stubs/blockdev-close-all-bdrv-states.o
  CC      stubs/cpu-get-clock.o
  CC      stubs/clock-warp.o
  CC      stubs/cpu-get-icount.o
  CC      stubs/dump.o
  CC      stubs/error-printf.o
  CC      stubs/fdset.o
  CC      stubs/gdbstub.o
  CC      stubs/get-vm-name.o
  CC      stubs/iothread.o
  CC      stubs/iothread-lock.o
  CC      stubs/is-daemonized.o
  CC      stubs/migr-blocker.o
  CC      stubs/machine-init-done.o
  CC      stubs/change-state-handler.o
  CC      stubs/monitor.o
  CC      stubs/notify-event.o
  CC      stubs/qtest.o
  CC      stubs/replay.o
  CC      stubs/slirp.o
  CC      stubs/runstate-check.o
  CC      stubs/set-fd-handler.o
  CC      stubs/sysbus.o
  CC      stubs/tpm.o
  CC      stubs/trace-control.o
  CC      stubs/uuid.o
  CC      stubs/vm-stop.o
  CC      stubs/vmstate.o
  CC      stubs/qmp_pc_dimm.o
  CC      stubs/target-get-monitor-def.o
  CC      stubs/pc_madt_cpu_entry.o
  CC      stubs/vmgenid.o
  CC      stubs/target-monitor-defs.o
  CC      stubs/xen-common.o
  CC      stubs/xen-hvm.o
  CC      stubs/pci-host-piix.o
  CC      contrib/ivshmem-client/ivshmem-client.o
  CC      contrib/ivshmem-client/main.o
  CC      contrib/ivshmem-server/ivshmem-server.o
  CC      contrib/ivshmem-server/main.o
  CC      qemu-nbd.o
  CC      blockjob.o
  CC      replication.o
  CC      block.o
  CC      qemu-io-cmds.o
  CC      block/raw-format.o
  CC      block/qcow.o
  CC      block/vdi.o
  CC      block/vmdk.o
  CC      block/cloop.o
  CC      block/bochs.o
  CC      block/vpc.o
  CC      block/vvfat.o
  CC      block/dmg.o
  CC      block/qcow2.o
  CC      block/qcow2-refcount.o
  CC      block/qcow2-cluster.o
  CC      block/qcow2-snapshot.o
  CC      block/qcow2-bitmap.o
  CC      block/qcow2-cache.o
  CC      block/qed.o
  CC      block/qed-table.o
  CC      block/qed-l2-cache.o
  CC      block/qed-cluster.o
  CC      block/qed-check.o
  CC      block/vhdx.o
  CC      block/vhdx-endian.o
  CC      block/vhdx-log.o
  CC      block/quorum.o
  CC      block/parallels.o
  CC      block/blkdebug.o
  CC      block/blkverify.o
  CC      block/snapshot.o
  CC      block/blkreplay.o
  CC      block/block-backend.o
  CC      block/qapi.o
  CC      block/file-posix.o
  CC      block/null.o
  CC      block/mirror.o
  CC      block/io.o
  CC      block/commit.o
  CC      block/throttle-groups.o
  CC      block/nbd.o
  CC      block/nbd-client.o
  CC      block/sheepdog.o
  CC      block/accounting.o
  CC      block/dirty-bitmap.o
  CC      block/backup.o
  CC      block/write-threshold.o
  CC      block/replication.o
  CC      block/throttle.o
  CC      block/crypto.o
  CC      nbd/server.o
  CC      nbd/common.o
  CC      nbd/client.o
  CC      scsi/utils.o
  CC      scsi/pr-manager.o
  CC      scsi/pr-manager-helper.o
  CC      crypto/hash.o
  CC      crypto/init.o
  CC      crypto/hash-glib.o
  CC      crypto/hmac.o
  CC      crypto/hmac-glib.o
  CC      crypto/aes.o
  CC      crypto/cipher.o
  CC      crypto/desrfb.o
  CC      crypto/tlscredsanon.o
  CC      crypto/tlscreds.o
  CC      crypto/tlscredsx509.o
  CC      crypto/tlssession.o
  CC      crypto/secret.o
  CC      crypto/random-platform.o
  CC      crypto/pbkdf.o
  CC      crypto/ivgen.o
  CC      crypto/ivgen-essiv.o
  CC      crypto/ivgen-plain.o
  CC      crypto/ivgen-plain64.o
  CC      crypto/afsplit.o
  CC      crypto/xts.o
  CC      crypto/block.o
  CC      crypto/block-qcow.o
  CC      crypto/block-luks.o
  CC      io/channel.o
  CC      io/channel-command.o
  CC      io/channel-buffer.o
  CC      io/channel-file.o
  CC      io/channel-socket.o
  CC      io/channel-tls.o
  CC      io/channel-watch.o
  CC      io/channel-websock.o
  CC      io/channel-util.o
  CC      io/dns-resolver.o
  CC      io/task.o
  CC      qom/object.o
  CC      qom/container.o
  GEN     qemu-img-cmds.h
  CC      qom/qom-qobject.o
  CC      qom/object_interfaces.o
  CC      qemu-io.o
  CC      scsi/qemu-pr-helper.o
  CC      blockdev.o
  CC      blockdev-nbd.o
  CC      qemu-bridge-helper.o
  CC      bootdevice.o
  CC      iothread.o
  CC      qdev-monitor.o
  CC      device-hotplug.o
  CC      os-posix.o
  CC      bt-host.o
  CC      dma-helpers.o
  CC      bt-vhci.o
  CC      vl.o
  CC      tpm.o
  CC      device_tree.o
  CC      qmp-marshal.o
  CC      qmp.o
  CC      cpus-common.o
  CC      audio/audio.o
  CC      hmp.o
  CC      audio/noaudio.o
  CC      audio/wavaudio.o
  CC      audio/mixeng.o
  CC      audio/ossaudio.o
  CC      audio/sdlaudio.o
  CC      audio/wavcapture.o
  CC      backends/rng.o
  CC      backends/rng-egd.o
  CC      backends/rng-random.o
  CC      backends/hostmem.o
  CC      backends/tpm.o
  CC      backends/hostmem-file.o
  CC      backends/hostmem-ram.o
  CC      backends/cryptodev-builtin.o
  CC      backends/cryptodev.o
  CC      chardev/msmouse.o
  CC      block/stream.o
  CC      chardev/wctablet.o
  CC      chardev/testdev.o
  CC      disas/arm.o
  CC      disas/i386.o
  CC      fsdev/qemu-fsdev-dummy.o
  CC      fsdev/qemu-fsdev-throttle.o
  CC      fsdev/qemu-fsdev-opts.o
  CC      hw/acpi/core.o
  CC      hw/acpi/piix4.o
  CC      hw/acpi/pcihp.o
  CC      hw/acpi/ich9.o
  CC      hw/acpi/tco.o
  CC      hw/acpi/cpu_hotplug.o
  CC      hw/acpi/memory_hotplug.o
  CC      hw/acpi/cpu.o
  CC      hw/acpi/nvdimm.o
  CC      hw/acpi/vmgenid.o
  CC      hw/acpi/acpi_interface.o
  CC      hw/acpi/bios-linker-loader.o
  CC      hw/acpi/aml-build.o
  CC      hw/acpi/ipmi.o
  CC      hw/acpi/acpi-stub.o
  CC      hw/acpi/ipmi-stub.o
  CC      hw/audio/sb16.o
  CC      hw/audio/ac97.o
  CC      hw/audio/es1370.o
  CC      hw/audio/fmopl.o
  CC      hw/audio/adlib.o
  CC      hw/audio/gus.o
  CC      hw/audio/gusemu_hal.o
  CC      hw/audio/gusemu_mixer.o
  CC      hw/audio/cs4231a.o
  CC      hw/audio/pcspk.o
  CC      hw/audio/intel-hda.o
  CC      hw/audio/hda-codec.o
  CC      hw/audio/wm8750.o
  CC      hw/audio/pl041.o
  CC      hw/audio/lm4549.o
  CC      hw/audio/marvell_88w8618.o
  CC      hw/audio/soundhw.o
  CC      hw/block/block.o
  CC      hw/block/hd-geometry.o
  CC      hw/block/cdrom.o
  CC      hw/block/fdc.o
  CC      hw/block/nand.o
  CC      hw/block/m25p80.o
  CC      hw/block/pflash_cfi01.o
  CC      hw/block/pflash_cfi02.o
  CC      hw/block/ecc.o
  CC      hw/block/onenand.o
  CC      hw/block/nvme.o
  CC      hw/bt/core.o
  CC      hw/bt/sdp.o
  CC      hw/bt/l2cap.o
  CC      hw/bt/hid.o
  CC      hw/bt/hci.o
  CC      hw/bt/hci-csr.o
  CC      hw/char/ipoctal232.o
  CC      hw/char/parallel.o
  CC      hw/char/pl011.o
  CC      hw/char/serial.o
  CC      hw/char/serial-pci.o
  CC      hw/char/serial-isa.o
  CC      hw/char/virtio-console.o
  CC      hw/char/cadence_uart.o
  CC      hw/char/cmsdk-apb-uart.o
  CC      hw/char/debugcon.o
  CC      hw/char/imx_serial.o
  CC      hw/core/qdev.o
  CC      hw/core/qdev-properties.o
  CC      hw/core/bus.o
  CC      hw/core/reset.o
  CC      hw/core/fw-path-provider.o
  CC      hw/core/irq.o
  CC      hw/core/hotplug.o
  CC      hw/core/nmi.o
  CC      hw/core/ptimer.o
  CC      hw/core/sysbus.o
  CC      hw/core/loader.o
  CC      hw/core/machine.o
  CC      hw/core/qdev-properties-system.o
  CC      hw/core/register.o
  CC      hw/cpu/core.o
  CC      hw/core/platform-bus.o
  CC      hw/core/or-irq.o
  CC      hw/display/ads7846.o
  CC      hw/display/cirrus_vga.o
  CC      hw/display/ssd0303.o
  CC      hw/display/ssd0323.o
  CC      hw/display/pl110.o
  CC      hw/display/vga-pci.o
  CC      hw/display/vga-isa.o
  CC      hw/display/vmware_vga.o
  CC      hw/display/blizzard.o
  CC      hw/display/exynos4210_fimd.o
  CC      hw/display/framebuffer.o
  CC      hw/display/tc6393xb.o
  CC      hw/dma/i8257.o
  CC      hw/dma/pl080.o
  CC      hw/dma/pl330.o
  CC      hw/dma/xlnx-zynq-devcfg.o
  CC      hw/gpio/max7310.o
  CC      hw/gpio/pl061.o
  CC      hw/gpio/zaurus.o
  CC      hw/gpio/gpio_key.o
  CC      hw/i2c/core.o
  CC      hw/i2c/smbus.o
  CC      hw/i2c/smbus_eeprom.o
  CC      hw/i2c/i2c-ddc.o
  CC      hw/i2c/versatile_i2c.o
  CC      hw/i2c/smbus_ich9.o
  CC      hw/i2c/pm_smbus.o
  CC      hw/i2c/bitbang_i2c.o
  CC      hw/i2c/exynos4210_i2c.o
  CC      hw/i2c/imx_i2c.o
  CC      hw/i2c/aspeed_i2c.o
  CC      hw/ide/core.o
  CC      hw/ide/atapi.o
  CC      hw/ide/qdev.o
  CC      hw/ide/pci.o
  CC      hw/ide/isa.o
  CC      hw/ide/piix.o
  CC      hw/ide/microdrive.o
  CC      hw/ide/ich.o
  CC      hw/ide/ahci.o
  CC      hw/input/hid.o
  CC      hw/input/lm832x.o
  CC      hw/input/pckbd.o
  CC      hw/input/pl050.o
  CC      hw/input/ps2.o
  CC      hw/input/stellaris_input.o
  CC      hw/input/tsc2005.o
  CC      hw/input/vmmouse.o
  CC      hw/input/virtio-input.o
  CC      hw/input/virtio-input-hid.o
  CC      hw/input/virtio-input-host.o
  CC      hw/intc/i8259_common.o
  CC      hw/intc/imx_avic.o
  CC      hw/intc/i8259.o
  CC      hw/intc/pl190.o
  CC      hw/intc/realview_gic.o
  CC      hw/intc/ioapic_common.o
  CC      hw/intc/arm_gic_common.o
  CC      hw/intc/arm_gic.o
  CC      hw/intc/arm_gicv2m.o
  CC      hw/intc/arm_gicv3_common.o
  CC      hw/intc/arm_gicv3.o
  CC      hw/intc/arm_gicv3_dist.o
  CC      hw/intc/arm_gicv3_its_common.o
  CC      hw/intc/intc.o
  CC      hw/intc/arm_gicv3_redist.o
  CC      hw/ipmi/ipmi.o
  CC      hw/ipack/ipack.o
  CC      hw/ipack/tpci200.o
  CC      hw/ipmi/ipmi_bmc_sim.o
  CC      hw/ipmi/ipmi_bmc_extern.o
  CC      hw/ipmi/isa_ipmi_kcs.o
  CC      hw/ipmi/isa_ipmi_bt.o
  CC      hw/isa/isa-bus.o
  CC      hw/isa/apm.o
  CC      hw/mem/pc-dimm.o
  CC      hw/mem/nvdimm.o
  CC      hw/misc/applesmc.o
  CC      hw/misc/tmp105.o
  CC      hw/misc/tmp421.o
  CC      hw/misc/debugexit.o
  CC      hw/misc/max111x.o
  CC      hw/misc/sga.o
  CC      hw/misc/pc-testdev.o
  CC      hw/misc/pci-testdev.o
  CC      hw/misc/edu.o
  CC      hw/misc/unimp.o
  CC      hw/misc/vmcoreinfo.o
  CC      hw/misc/arm_l2x0.o
  CC      hw/misc/arm_integrator_debug.o
  CC      hw/misc/a9scu.o
  CC      hw/misc/arm11scu.o
  CC      hw/net/ne2000.o
  CC      hw/net/eepro100.o
  CC      hw/net/pcnet-pci.o
  CC      hw/net/pcnet.o
  CC      hw/net/e1000.o
  CC      hw/net/e1000x_common.o
  CC      hw/net/net_tx_pkt.o
  CC      hw/net/net_rx_pkt.o
  CC      hw/net/e1000e.o
  CC      hw/net/e1000e_core.o
  CC      hw/net/rtl8139.o
  CC      hw/net/vmxnet3.o
  CC      hw/net/smc91c111.o
  CC      hw/net/lan9118.o
  CC      hw/net/ne2000-isa.o
  CC      hw/net/xgmac.o
  CC      hw/net/allwinner_emac.o
  CC      hw/net/imx_fec.o
  CC      hw/net/cadence_gem.o
  CC      hw/net/stellaris_enet.o
  CC      hw/net/ftgmac100.o
  CC      hw/net/rocker/rocker.o
  CC      hw/net/rocker/rocker_fp.o
  CC      hw/net/rocker/rocker_desc.o
  CC      hw/net/rocker/rocker_world.o
  CC      hw/net/rocker/rocker_of_dpa.o
  CC      hw/nvram/eeprom93xx.o
  CC      hw/nvram/fw_cfg.o
  CC      hw/nvram/chrp_nvram.o
  CC      hw/pci-bridge/pci_bridge_dev.o
  CC      hw/pci-bridge/pcie_pci_bridge.o
  CC      hw/pci-bridge/pcie_root_port.o
  CC      hw/pci-bridge/gen_pcie_root_port.o
  CC      hw/pci-bridge/pci_expander_bridge.o
  CC      hw/pci-bridge/xio3130_upstream.o
  CC      hw/pci-bridge/xio3130_downstream.o
  CC      hw/pci-bridge/i82801b11.o
  CC      hw/pci-bridge/ioh3420.o
  CC      hw/pci-host/pam.o
  CC      hw/pci-host/versatile.o
  CC      hw/pci-host/piix.o
  CC      hw/pci-host/q35.o
  CC      hw/pci-host/gpex.o
  CC      hw/pci/pci.o
  CC      hw/pci/pci_bridge.o
  CC      hw/pci/msi.o
  CC      hw/pci/msix.o
  CC      hw/pci/shpc.o
  CC      hw/pci/slotid_cap.o
  CC      hw/pci/pci_host.o
  CC      hw/pci/pcie_host.o
  CC      hw/pci/pcie.o
  CC      hw/pci/pcie_aer.o
  CC      hw/pci/pcie_port.o
  CC      hw/pcmcia/pcmcia.o
  CC      hw/pci/pci-stub.o
  CC      hw/scsi/scsi-disk.o
  CC      hw/scsi/scsi-generic.o
  CC      hw/scsi/scsi-bus.o
  CC      hw/scsi/lsi53c895a.o
  CC      hw/scsi/mptsas.o
  CC      hw/scsi/mptconfig.o
  CC      hw/scsi/mptendian.o
  CC      hw/scsi/megasas.o
  CC      hw/scsi/vmw_pvscsi.o
  CC      hw/scsi/esp.o
  CC      hw/scsi/esp-pci.o
  CC      hw/sd/pl181.o
  CC      hw/sd/ssi-sd.o
  CC      hw/sd/sd.o
  CC      hw/sd/core.o
  CC      hw/sd/sdhci.o
  CC      hw/smbios/smbios_type_38.o
  CC      hw/smbios/smbios-stub.o
  CC      hw/smbios/smbios.o
  CC      hw/smbios/smbios_type_38-stub.o
  CC      hw/ssi/pl022.o
  CC      hw/ssi/ssi.o
  CC      hw/ssi/xilinx_spips.o
  CC      hw/ssi/aspeed_smc.o
  CC      hw/ssi/stm32f2xx_spi.o
  CC      hw/ssi/mss-spi.o
  CC      hw/timer/arm_timer.o
  CC      hw/timer/arm_mptimer.o
  CC      hw/timer/armv7m_systick.o
  CC      hw/timer/a9gtimer.o
  CC      hw/timer/cadence_ttc.o
  CC      hw/timer/ds1338.o
  CC      hw/timer/hpet.o
  CC      hw/timer/i8254_common.o
  CC      hw/timer/i8254.o
  CC      hw/timer/pl031.o
  CC      hw/timer/twl92230.o
  CC      hw/timer/imx_gpt.o
  CC      hw/timer/stm32f2xx_timer.o
  CC      hw/timer/cmsdk-apb-timer.o
  CC      hw/timer/aspeed_timer.o
  CC      hw/timer/mss-timer.o
  CC      hw/timer/imx_epit.o
  CC      hw/tpm/tpm_tis.o
  CC      hw/tpm/tpm_passthrough.o
  CC      hw/tpm/tpm_util.o
  CC      hw/tpm/tpm_emulator.o
  CC      hw/usb/combined-packet.o
  CC      hw/usb/bus.o
  CC      hw/usb/libhw.o
  CC      hw/usb/core.o
  CC      hw/usb/desc.o
  CC      hw/usb/desc-msos.o
  CC      hw/usb/hcd-uhci.o
  CC      hw/usb/hcd-ohci.o
  CC      hw/usb/hcd-ehci.o
  CC      hw/usb/hcd-ehci-pci.o
  CC      hw/usb/hcd-ehci-sysbus.o
  CC      hw/usb/hcd-xhci.o
  CC      hw/usb/hcd-xhci-nec.o
  CC      hw/usb/dev-hub.o
  CC      hw/usb/hcd-musb.o
  CC      hw/usb/dev-wacom.o
  CC      hw/usb/dev-hid.o
  CC      hw/usb/dev-storage.o
  CC      hw/usb/dev-uas.o
  CC      hw/usb/dev-audio.o
  CC      hw/usb/dev-serial.o
  CC      hw/usb/dev-network.o
  CC      hw/usb/dev-smartcard-reader.o
  CC      hw/usb/dev-bluetooth.o
  CC      hw/usb/dev-mtp.o
  CC      hw/usb/host-stub.o
  CC      hw/virtio/virtio-rng.o
  CC      hw/virtio/virtio-pci.o
  CC      hw/virtio/virtio-bus.o
  CC      hw/virtio/virtio-mmio.o
  CC      hw/virtio/vhost-stub.o
  CC      hw/watchdog/watchdog.o
  CC      hw/watchdog/wdt_i6300esb.o
  CC      hw/watchdog/wdt_ib700.o
  CC      migration/migration.o
  CC      hw/watchdog/wdt_aspeed.o
  CC      migration/socket.o
  CC      migration/fd.o
  CC      migration/exec.o
  CC      migration/tls.o
  CC      migration/channel.o
  CC      migration/savevm.o
  CC      migration/colo-comm.o
  CC      migration/colo.o
  CC      migration/colo-failover.o
  CC      migration/vmstate.o
  CC      migration/vmstate-types.o
  CC      migration/page_cache.o
  CC      migration/qemu-file.o
  CC      migration/global_state.o
  CC      migration/xbzrle.o
  CC      migration/qemu-file-channel.o
  CC      migration/postcopy-ram.o
  CC      migration/qjson.o
  CC      migration/block.o
  CC      net/queue.o
  CC      net/net.o
  CC      net/checksum.o
  CC      net/hub.o
  CC      net/util.o
  CC      net/dump.o
  CC      net/eth.o
  CC      net/l2tpv3.o
  CC      net/vhost-user.o
  CC      net/socket.o
  CC      net/filter.o
  CC      net/slirp.o
  CC      net/filter-buffer.o
  CC      net/filter-mirror.o
  CC      net/colo-compare.o
  CC      net/filter-rewriter.o
  CC      net/filter-replay.o
  CC      net/colo.o
  CC      net/tap.o
  CC      net/tap-linux.o
  CC      qom/cpu.o
  CC      replay/replay.o
  CC      replay/replay-internal.o
  CC      replay/replay-events.o
  CC      replay/replay-time.o
  CC      replay/replay-input.o
  CC      replay/replay-char.o
  CC      replay/replay-snapshot.o
  CC      replay/replay-net.o
  CC      replay/replay-audio.o
  CC      slirp/cksum.o
  CC      slirp/if.o
  CC      slirp/ip_icmp.o
  CC      slirp/ip6_input.o
  CC      slirp/ip6_output.o
  CC      slirp/ip6_icmp.o
  CC      slirp/ip_input.o
  CC      slirp/dnssearch.o
  CC      slirp/ip_output.o
  CC      slirp/dhcpv6.o
  CC      slirp/slirp.o
  CC      slirp/mbuf.o
  CC      slirp/misc.o
  CC      slirp/sbuf.o
  CC      slirp/tcp_output.o
  CC      slirp/tcp_timer.o
  CC      slirp/tcp_input.o
  CC      slirp/socket.o
  CC      slirp/tcp_subr.o
  CC      slirp/udp.o
  CC      slirp/udp6.o
  CC      slirp/bootp.o
  CC      slirp/tftp.o
  CC      slirp/arp_table.o
  CC      slirp/ndp_table.o
  CC      ui/keymaps.o
  CC      slirp/ncsi.o
/tmp/qemu-test/src/slirp/tcp_input.c: In function 'tcp_input':
/tmp/qemu-test/src/slirp/tcp_input.c:219: warning: 'save_ip.ip_p' may be used uninitialized in this function
/tmp/qemu-test/src/slirp/tcp_input.c:219: warning: 'save_ip.ip_len' may be used uninitialized in this function
/tmp/qemu-test/src/slirp/tcp_input.c:219: warning: 'save_ip.ip_tos' may be used uninitialized in this function
/tmp/qemu-test/src/slirp/tcp_input.c:219: warning: 'save_ip.ip_id' may be used uninitialized in this function
/tmp/qemu-test/src/slirp/tcp_input.c:219: warning: 'save_ip.ip_off' may be used uninitialized in this function
/tmp/qemu-test/src/slirp/tcp_input.c:219: warning: 'save_ip.ip_ttl' may be used uninitialized in this function
/tmp/qemu-test/src/slirp/tcp_input.c:219: warning: 'save_ip.ip_sum' may be used uninitialized in this function
/tmp/qemu-test/src/slirp/tcp_input.c:219: warning: 'save_ip.ip_src.s_addr' may be used uninitialized in this function
/tmp/qemu-test/src/slirp/tcp_input.c:219: warning: 'save_ip.ip_dst.s_addr' may be used uninitialized in this function
/tmp/qemu-test/src/slirp/tcp_input.c:220: warning: 'save_ip6.ip_nh' may be used uninitialized in this function
  CC      ui/console.o
  CC      ui/cursor.o
  CC      ui/input.o
  CC      ui/qemu-pixman.o
  CC      ui/input-keymap.o
  CC      ui/input-legacy.o
  CC      ui/input-linux.o
  CC      ui/sdl.o
  CC      ui/x_keymap.o
  CC      ui/vnc-enc-zlib.o
  CC      ui/sdl_zoom.o
  CC      ui/vnc-enc-hextile.o
  CC      ui/vnc.o
  CC      ui/vnc-enc-tight.o
  CC      ui/vnc-palette.o
  CC      ui/vnc-enc-zrle.o
  CC      ui/vnc-auth-vencrypt.o
  CC      ui/vnc-ws.o
  CC      ui/vnc-jobs.o
  CC      chardev/char.o
  CC      chardev/char-fd.o
  CC      chardev/char-fe.o
  CC      chardev/char-file.o
  CC      chardev/char-mux.o
  CC      chardev/char-io.o
  CC      chardev/char-null.o
  CC      chardev/char-parallel.o
  CC      chardev/char-pipe.o
  CC      chardev/char-pty.o
  CC      chardev/char-ringbuf.o
  CC      chardev/char-socket.o
  CC      chardev/char-stdio.o
  CC      chardev/char-serial.o
  CC      chardev/char-udp.o
  LINK    tests/qemu-iotests/socket_scm_helper
  CC      qga/guest-agent-command-state.o
  CC      qga/main.o
  CC      qga/commands.o
  CC      qga/commands-posix.o
  CC      qga/channel-posix.o
  CC      qga/qapi-generated/qga-qapi-types.o
  CC      qga/qapi-generated/qga-qapi-visit.o
  CC      qga/qapi-generated/qga-qmp-marshal.o
  AR      libqemuutil.a
  CC      qemu-img.o
  AS      optionrom/multiboot.o
  AS      optionrom/linuxboot.o
  AS      optionrom/kvmvapic.o
  CC      optionrom/linuxboot_dma.o
cc: unrecognized option '-no-integrated-as'
cc: unrecognized option '-no-integrated-as'
  BUILD   optionrom/linuxboot_dma.img
  BUILD   optionrom/linuxboot_dma.raw
  BUILD   optionrom/linuxboot.img
  SIGN    optionrom/linuxboot_dma.bin
  BUILD   optionrom/linuxboot.raw
  BUILD   optionrom/multiboot.img
  LINK    qemu-ga
  SIGN    optionrom/linuxboot.bin
  BUILD   optionrom/kvmvapic.img
  BUILD   optionrom/multiboot.raw
  SIGN    optionrom/multiboot.bin
  BUILD   optionrom/kvmvapic.raw
  SIGN    optionrom/kvmvapic.bin
  LINK    ivshmem-client
  LINK    ivshmem-server
  LINK    qemu-nbd
  LINK    qemu-img
  LINK    qemu-io
  LINK    scsi/qemu-pr-helper
  LINK    qemu-bridge-helper
  GEN     aarch64-softmmu/hmp-commands.h
  GEN     aarch64-softmmu/hmp-commands-info.h
  GEN     aarch64-softmmu/config-target.h
  CC      aarch64-softmmu/exec.o
  CC      aarch64-softmmu/tcg/tcg.o
  CC      aarch64-softmmu/tcg/optimize.o
  CC      aarch64-softmmu/fpu/softfloat.o
  CC      aarch64-softmmu/tcg/tcg-common.o
  CC      aarch64-softmmu/disas.o
  CC      aarch64-softmmu/tcg/tcg-op.o
  GEN     aarch64-softmmu/gdbstub-xml.c
  GEN     x86_64-softmmu/hmp-commands.h
  GEN     x86_64-softmmu/hmp-commands-info.h
  GEN     x86_64-softmmu/config-target.h
  CC      x86_64-softmmu/exec.o
  CC      aarch64-softmmu/arch_init.o
  CC      aarch64-softmmu/cpus.o
  CC      aarch64-softmmu/monitor.o
  CC      aarch64-softmmu/gdbstub.o
  CC      aarch64-softmmu/balloon.o
  CC      x86_64-softmmu/tcg/tcg.o
  CC      aarch64-softmmu/ioport.o
  CC      x86_64-softmmu/tcg/tcg-op.o
  CC      aarch64-softmmu/numa.o
  CC      aarch64-softmmu/qtest.o
  CC      aarch64-softmmu/memory.o
  CC      aarch64-softmmu/memory_mapping.o
  CC      x86_64-softmmu/tcg/tcg-common.o
  CC      x86_64-softmmu/fpu/softfloat.o
  CC      x86_64-softmmu/tcg/optimize.o
  CC      x86_64-softmmu/disas.o
  CC      aarch64-softmmu/migration/ram.o
  CC      aarch64-softmmu/dump.o
  GEN     x86_64-softmmu/gdbstub-xml.c
  CC      aarch64-softmmu/accel/accel.o
  CC      x86_64-softmmu/arch_init.o
  CC      aarch64-softmmu/accel/stubs/hax-stub.o
  CC      x86_64-softmmu/monitor.o
  CC      x86_64-softmmu/cpus.o
  CC      aarch64-softmmu/accel/stubs/kvm-stub.o
  CC      x86_64-softmmu/gdbstub.o
  CC      x86_64-softmmu/balloon.o
  CC      x86_64-softmmu/ioport.o
  CC      x86_64-softmmu/numa.o
  CC      aarch64-softmmu/accel/tcg/cputlb.o
  CC      aarch64-softmmu/accel/tcg/tcg-all.o
  CC      x86_64-softmmu/qtest.o
  CC      aarch64-softmmu/accel/tcg/tcg-runtime.o
  CC      x86_64-softmmu/memory.o
  CC      x86_64-softmmu/memory_mapping.o
  CC      aarch64-softmmu/accel/tcg/cpu-exec.o
  CC      x86_64-softmmu/dump.o
  CC      x86_64-softmmu/accel/accel.o
  CC      aarch64-softmmu/accel/tcg/cpu-exec-common.o
  CC      x86_64-softmmu/accel/kvm/kvm-all.o
  CC      x86_64-softmmu/accel/stubs/hax-stub.o
  CC      x86_64-softmmu/migration/ram.o
  CC      x86_64-softmmu/accel/tcg/tcg-all.o
  CC      x86_64-softmmu/accel/tcg/cputlb.o
  CC      x86_64-softmmu/accel/tcg/tcg-runtime.o
  CC      aarch64-softmmu/accel/tcg/translator.o
  CC      aarch64-softmmu/accel/tcg/translate-all.o
  CC      x86_64-softmmu/accel/tcg/cpu-exec.o
  CC      x86_64-softmmu/accel/tcg/cpu-exec-common.o
  CC      x86_64-softmmu/accel/tcg/translate-all.o
  CC      aarch64-softmmu/hw/adc/stm32f2xx_adc.o
  CC      x86_64-softmmu/accel/tcg/translator.o
  CC      x86_64-softmmu/hw/block/virtio-blk.o
  CC      x86_64-softmmu/hw/block/dataplane/virtio-blk.o
  CC      x86_64-softmmu/hw/char/virtio-serial-bus.o
  CC      x86_64-softmmu/hw/core/generic-loader.o
  CC      aarch64-softmmu/hw/block/virtio-blk.o
  CC      x86_64-softmmu/hw/core/null-machine.o
  CC      x86_64-softmmu/hw/display/vga.o
  CC      x86_64-softmmu/hw/display/virtio-gpu.o
  CC      x86_64-softmmu/hw/display/virtio-gpu-3d.o
  CC      x86_64-softmmu/hw/display/virtio-gpu-pci.o
  CC      x86_64-softmmu/hw/display/virtio-vga.o
  CC      x86_64-softmmu/hw/intc/apic.o
  CC      aarch64-softmmu/hw/block/dataplane/virtio-blk.o
  CC      x86_64-softmmu/hw/intc/apic_common.o
  CC      x86_64-softmmu/hw/intc/ioapic.o
  CC      x86_64-softmmu/hw/isa/lpc_ich9.o
  CC      x86_64-softmmu/hw/misc/vmport.o
  CC      aarch64-softmmu/hw/char/exynos4210_uart.o
  CC      x86_64-softmmu/hw/misc/ivshmem.o
  CC      x86_64-softmmu/hw/misc/pvpanic.o
  CC      x86_64-softmmu/hw/misc/hyperv_testdev.o
  CC      aarch64-softmmu/hw/char/omap_uart.o
  CC      x86_64-softmmu/hw/misc/mmio_interface.o
  CC      aarch64-softmmu/hw/char/digic-uart.o
  CC      x86_64-softmmu/hw/net/virtio-net.o
  CC      aarch64-softmmu/hw/char/stm32f2xx_usart.o
  CC      x86_64-softmmu/hw/net/vhost_net.o
  CC      x86_64-softmmu/hw/scsi/virtio-scsi.o
  CC      aarch64-softmmu/hw/char/virtio-serial-bus.o
  CC      aarch64-softmmu/hw/char/bcm2835_aux.o
  CC      aarch64-softmmu/hw/core/generic-loader.o
  CC      aarch64-softmmu/hw/core/null-machine.o
  CC      x86_64-softmmu/hw/scsi/virtio-scsi-dataplane.o
  CC      aarch64-softmmu/hw/cpu/arm11mpcore.o
  CC      x86_64-softmmu/hw/scsi/vhost-scsi-common.o
  CC      aarch64-softmmu/hw/cpu/realview_mpcore.o
  CC      x86_64-softmmu/hw/scsi/vhost-scsi.o
  CC      aarch64-softmmu/hw/cpu/a9mpcore.o
  CC      x86_64-softmmu/hw/scsi/vhost-user-scsi.o
  CC      x86_64-softmmu/hw/timer/mc146818rtc.o
  CC      x86_64-softmmu/hw/vfio/common.o
  CC      aarch64-softmmu/hw/cpu/a15mpcore.o
  CC      x86_64-softmmu/hw/vfio/pci.o
  CC      aarch64-softmmu/hw/display/omap_dss.o
  CC      aarch64-softmmu/hw/display/omap_lcdc.o
  CC      x86_64-softmmu/hw/vfio/pci-quirks.o
  CC      aarch64-softmmu/hw/display/pxa2xx_lcd.o
  CC      aarch64-softmmu/hw/display/bcm2835_fb.o
  CC      aarch64-softmmu/hw/display/vga.o
  CC      x86_64-softmmu/hw/vfio/platform.o
  CC      aarch64-softmmu/hw/display/virtio-gpu.o
  CC      aarch64-softmmu/hw/display/virtio-gpu-3d.o
  CC      aarch64-softmmu/hw/display/virtio-gpu-pci.o
  CC      x86_64-softmmu/hw/virtio/virtio.o
  CC      x86_64-softmmu/hw/vfio/spapr.o
  CC      aarch64-softmmu/hw/display/dpcd.o
  CC      x86_64-softmmu/hw/virtio/virtio-balloon.o
  CC      aarch64-softmmu/hw/display/xlnx_dp.o
  CC      x86_64-softmmu/hw/virtio/vhost.o
  CC      aarch64-softmmu/hw/dma/xlnx_dpdma.o
  CC      x86_64-softmmu/hw/virtio/vhost-backend.o
  CC      x86_64-softmmu/hw/virtio/vhost-user.o
  CC      aarch64-softmmu/hw/dma/omap_dma.o
  CC      x86_64-softmmu/hw/virtio/vhost-vsock.o
  CC      x86_64-softmmu/hw/virtio/virtio-crypto.o
  CC      aarch64-softmmu/hw/dma/soc_dma.o
  CC      x86_64-softmmu/hw/virtio/virtio-crypto-pci.o
  CC      aarch64-softmmu/hw/dma/pxa2xx_dma.o
  CC      aarch64-softmmu/hw/dma/bcm2835_dma.o
  CC      x86_64-softmmu/hw/i386/multiboot.o
  CC      x86_64-softmmu/hw/i386/pc.o
  CC      x86_64-softmmu/hw/i386/pc_piix.o
  CC      x86_64-softmmu/hw/i386/pc_q35.o
  CC      aarch64-softmmu/hw/gpio/omap_gpio.o
  CC      aarch64-softmmu/hw/gpio/imx_gpio.o
  CC      aarch64-softmmu/hw/gpio/bcm2835_gpio.o
  CC      x86_64-softmmu/hw/i386/pc_sysfw.o
/tmp/qemu-test/src/hw/i386/pc_piix.c: In function 'igd_passthrough_isa_bridge_create':
/tmp/qemu-test/src/hw/i386/pc_piix.c:1072: warning: 'pch_rev_id' may be used uninitialized in this function
  CC      x86_64-softmmu/hw/i386/intel_iommu.o
  CC      x86_64-softmmu/hw/i386/x86-iommu.o
  CC      x86_64-softmmu/hw/i386/amd_iommu.o
  CC      x86_64-softmmu/hw/i386/kvmvapic.o
  CC      x86_64-softmmu/hw/i386/acpi-build.o
  CC      x86_64-softmmu/hw/i386/pci-assign-load-rom.o
  CC      aarch64-softmmu/hw/i2c/omap_i2c.o
  CC      aarch64-softmmu/hw/input/pxa2xx_keypad.o
  CC      x86_64-softmmu/hw/i386/kvm/clock.o
  CC      x86_64-softmmu/hw/i386/kvm/apic.o
  CC      x86_64-softmmu/hw/i386/kvm/i8259.o
  CC      aarch64-softmmu/hw/input/tsc210x.o
/tmp/qemu-test/src/hw/i386/acpi-build.c: In function 'build_append_pci_bus_devices':
/tmp/qemu-test/src/hw/i386/acpi-build.c:509: warning: 'notify_method' may be used uninitialized in this function
  CC      x86_64-softmmu/hw/i386/kvm/ioapic.o
  CC      aarch64-softmmu/hw/intc/armv7m_nvic.o
  CC      x86_64-softmmu/hw/i386/kvm/i8254.o
  CC      aarch64-softmmu/hw/intc/exynos4210_gic.o
  CC      aarch64-softmmu/hw/intc/exynos4210_combiner.o
  CC      x86_64-softmmu/hw/i386/kvm/pci-assign.o
  CC      aarch64-softmmu/hw/intc/omap_intc.o
  CC      aarch64-softmmu/hw/intc/bcm2835_ic.o
  CC      x86_64-softmmu/target/i386/helper.o
  CC      aarch64-softmmu/hw/intc/bcm2836_control.o
  CC      x86_64-softmmu/target/i386/cpu.o
  CC      aarch64-softmmu/hw/intc/allwinner-a10-pic.o
  CC      x86_64-softmmu/target/i386/gdbstub.o
  CC      aarch64-softmmu/hw/intc/aspeed_vic.o
  CC      aarch64-softmmu/hw/intc/arm_gicv3_cpuif.o
  CC      x86_64-softmmu/target/i386/xsave_helper.o
  CC      aarch64-softmmu/hw/misc/ivshmem.o
  CC      aarch64-softmmu/hw/misc/arm_sysctl.o
  CC      aarch64-softmmu/hw/misc/cbus.o
  CC      aarch64-softmmu/hw/misc/exynos4210_pmu.o
  CC      x86_64-softmmu/target/i386/translate.o
  CC      x86_64-softmmu/target/i386/bpt_helper.o
  CC      aarch64-softmmu/hw/misc/exynos4210_clk.o
  CC      aarch64-softmmu/hw/misc/exynos4210_rng.o
  CC      aarch64-softmmu/hw/misc/imx_ccm.o
  CC      x86_64-softmmu/target/i386/cc_helper.o
  CC      aarch64-softmmu/hw/misc/imx31_ccm.o
  CC      aarch64-softmmu/hw/misc/imx25_ccm.o
  CC      aarch64-softmmu/hw/misc/imx6_ccm.o
  CC      x86_64-softmmu/target/i386/excp_helper.o
  CC      x86_64-softmmu/target/i386/fpu_helper.o
  CC      aarch64-softmmu/hw/misc/imx6_src.o
  CC      x86_64-softmmu/target/i386/int_helper.o
  CC      aarch64-softmmu/hw/misc/mst_fpga.o
  CC      x86_64-softmmu/target/i386/mem_helper.o
  CC      aarch64-softmmu/hw/misc/omap_clk.o
  CC      aarch64-softmmu/hw/misc/omap_gpmc.o
  CC      aarch64-softmmu/hw/misc/omap_l4.o
  CC      x86_64-softmmu/target/i386/misc_helper.o
  CC      aarch64-softmmu/hw/misc/omap_sdrc.o
  CC      aarch64-softmmu/hw/misc/omap_tap.o
  CC      x86_64-softmmu/target/i386/mpx_helper.o
  CC      x86_64-softmmu/target/i386/seg_helper.o
  CC      aarch64-softmmu/hw/misc/bcm2835_mbox.o
  CC      aarch64-softmmu/hw/misc/bcm2835_property.o
  CC      x86_64-softmmu/target/i386/smm_helper.o
  CC      x86_64-softmmu/target/i386/svm_helper.o
  CC      aarch64-softmmu/hw/misc/bcm2835_rng.o
  CC      aarch64-softmmu/hw/misc/zynq_slcr.o
  CC      x86_64-softmmu/target/i386/machine.o
  CC      x86_64-softmmu/target/i386/arch_memory_mapping.o
  CC      x86_64-softmmu/target/i386/arch_dump.o
  CC      aarch64-softmmu/hw/misc/zynq-xadc.o
  CC      aarch64-softmmu/hw/misc/stm32f2xx_syscfg.o
  CC      x86_64-softmmu/target/i386/kvm.o
  CC      x86_64-softmmu/target/i386/hyperv.o
  CC      x86_64-softmmu/target/i386/monitor.o
  CC      aarch64-softmmu/hw/misc/mps2-scc.o
  CC      aarch64-softmmu/hw/misc/auxbus.o
  CC      aarch64-softmmu/hw/misc/aspeed_scu.o
  CC      aarch64-softmmu/hw/misc/aspeed_sdmc.o
  CC      aarch64-softmmu/hw/misc/mmio_interface.o
  CC      aarch64-softmmu/hw/misc/msf2-sysreg.o
  CC      aarch64-softmmu/hw/net/virtio-net.o
  CC      aarch64-softmmu/hw/net/vhost_net.o
  GEN     trace/generated-helpers.c
  CC      x86_64-softmmu/trace/control-target.o
  CC      aarch64-softmmu/hw/pcmcia/pxa2xx.o
  CC      aarch64-softmmu/hw/scsi/virtio-scsi.o
  CC      aarch64-softmmu/hw/scsi/virtio-scsi-dataplane.o
  CC      x86_64-softmmu/gdbstub-xml.o
  CC      aarch64-softmmu/hw/scsi/vhost-scsi-common.o
  CC      aarch64-softmmu/hw/scsi/vhost-scsi.o
  CC      aarch64-softmmu/hw/scsi/vhost-user-scsi.o
  CC      aarch64-softmmu/hw/sd/omap_mmc.o
  CC      aarch64-softmmu/hw/sd/pxa2xx_mmci.o
  CC      aarch64-softmmu/hw/sd/bcm2835_sdhost.o
  CC      aarch64-softmmu/hw/ssi/omap_spi.o
  CC      aarch64-softmmu/hw/timer/exynos4210_mct.o
  CC      aarch64-softmmu/hw/ssi/imx_spi.o
  CC      aarch64-softmmu/hw/timer/exynos4210_pwm.o
  CC      aarch64-softmmu/hw/timer/exynos4210_rtc.o
  CC      aarch64-softmmu/hw/timer/omap_gptimer.o
  CC      aarch64-softmmu/hw/timer/omap_synctimer.o
  CC      aarch64-softmmu/hw/timer/pxa2xx_timer.o
  CC      aarch64-softmmu/hw/timer/digic-timer.o
  CC      x86_64-softmmu/trace/generated-helpers.o
  CC      aarch64-softmmu/hw/timer/allwinner-a10-pit.o
  CC      aarch64-softmmu/hw/usb/tusb6010.o
  CC      aarch64-softmmu/hw/vfio/common.o
  CC      aarch64-softmmu/hw/vfio/pci.o
  CC      aarch64-softmmu/hw/vfio/pci-quirks.o
  CC      aarch64-softmmu/hw/vfio/platform.o
  CC      aarch64-softmmu/hw/vfio/calxeda-xgmac.o
  LINK    x86_64-softmmu/qemu-system-x86_64
  CC      aarch64-softmmu/hw/vfio/amd-xgbe.o
  CC      aarch64-softmmu/hw/vfio/spapr.o
  CC      aarch64-softmmu/hw/virtio/virtio.o
  CC      aarch64-softmmu/hw/virtio/virtio-balloon.o
  CC      aarch64-softmmu/hw/virtio/vhost.o
  CC      aarch64-softmmu/hw/virtio/vhost-backend.o
  CC      aarch64-softmmu/hw/virtio/vhost-user.o
  CC      aarch64-softmmu/hw/virtio/vhost-vsock.o
  CC      aarch64-softmmu/hw/virtio/virtio-crypto.o
  CC      aarch64-softmmu/hw/virtio/virtio-crypto-pci.o
  CC      aarch64-softmmu/hw/arm/boot.o
  CC      aarch64-softmmu/hw/arm/collie.o
  CC      aarch64-softmmu/hw/arm/exynos4_boards.o
  CC      aarch64-softmmu/hw/arm/gumstix.o
  CC      aarch64-softmmu/hw/arm/highbank.o
  CC      aarch64-softmmu/hw/arm/digic_boards.o
  CC      aarch64-softmmu/hw/arm/integratorcp.o
  CC      aarch64-softmmu/hw/arm/mainstone.o
  CC      aarch64-softmmu/hw/arm/nseries.o
  CC      aarch64-softmmu/hw/arm/musicpal.o
  CC      aarch64-softmmu/hw/arm/omap_sx1.o
  CC      aarch64-softmmu/hw/arm/palm.o
  CC      aarch64-softmmu/hw/arm/realview.o
  CC      aarch64-softmmu/hw/arm/spitz.o
  CC      aarch64-softmmu/hw/arm/stellaris.o
  CC      aarch64-softmmu/hw/arm/tosa.o
  CC      aarch64-softmmu/hw/arm/vexpress.o
  CC      aarch64-softmmu/hw/arm/virt.o
  CC      aarch64-softmmu/hw/arm/xilinx_zynq.o
  CC      aarch64-softmmu/hw/arm/versatilepb.o
  CC      aarch64-softmmu/hw/arm/virt-acpi-build.o
  CC      aarch64-softmmu/hw/arm/z2.o
  CC      aarch64-softmmu/hw/arm/netduino2.o
  CC      aarch64-softmmu/hw/arm/sysbus-fdt.o
  CC      aarch64-softmmu/hw/arm/exynos4210.o
  CC      aarch64-softmmu/hw/arm/armv7m.o
  CC      aarch64-softmmu/hw/arm/pxa2xx_gpio.o
  CC      aarch64-softmmu/hw/arm/pxa2xx.o
  CC      aarch64-softmmu/hw/arm/pxa2xx_pic.o
  CC      aarch64-softmmu/hw/arm/omap1.o
  CC      aarch64-softmmu/hw/arm/omap2.o
  CC      aarch64-softmmu/hw/arm/strongarm.o
  CC      aarch64-softmmu/hw/arm/allwinner-a10.o
  CC      aarch64-softmmu/hw/arm/digic.o
  CC      aarch64-softmmu/hw/arm/cubieboard.o
  CC      aarch64-softmmu/hw/arm/bcm2835_peripherals.o
  CC      aarch64-softmmu/hw/arm/bcm2836.o
  CC      aarch64-softmmu/hw/arm/raspi.o
  CC      aarch64-softmmu/hw/arm/stm32f205_soc.o
  CC      aarch64-softmmu/hw/arm/xlnx-zynqmp.o
  CC      aarch64-softmmu/hw/arm/fsl-imx25.o
  CC      aarch64-softmmu/hw/arm/xlnx-zcu102.o
  CC      aarch64-softmmu/hw/arm/imx25_pdk.o
  CC      aarch64-softmmu/hw/arm/fsl-imx31.o
  CC      aarch64-softmmu/hw/arm/kzm.o
  CC      aarch64-softmmu/hw/arm/fsl-imx6.o
  CC      aarch64-softmmu/hw/arm/sabrelite.o
  CC      aarch64-softmmu/hw/arm/aspeed_soc.o
  CC      aarch64-softmmu/hw/arm/aspeed.o
  CC      aarch64-softmmu/hw/arm/msf2-soc.o
  CC      aarch64-softmmu/hw/arm/msf2-som.o
  CC      aarch64-softmmu/hw/arm/mps2.o
  CC      aarch64-softmmu/target/arm/arm-semi.o
  CC      aarch64-softmmu/target/arm/machine.o
  CC      aarch64-softmmu/target/arm/psci.o
  CC      aarch64-softmmu/target/arm/arch_dump.o
  CC      aarch64-softmmu/target/arm/monitor.o
  CC      aarch64-softmmu/target/arm/kvm-stub.o
  CC      aarch64-softmmu/target/arm/op_helper.o
  CC      aarch64-softmmu/target/arm/translate.o
  CC      aarch64-softmmu/target/arm/helper.o
  CC      aarch64-softmmu/target/arm/cpu.o
  CC      aarch64-softmmu/target/arm/neon_helper.o
  CC      aarch64-softmmu/target/arm/iwmmxt_helper.o
  CC      aarch64-softmmu/target/arm/gdbstub.o
  CC      aarch64-softmmu/target/arm/cpu64.o
  CC      aarch64-softmmu/target/arm/translate-a64.o
  CC      aarch64-softmmu/target/arm/helper-a64.o
  CC      aarch64-softmmu/target/arm/gdbstub64.o
  CC      aarch64-softmmu/target/arm/arm-powerctl.o
  CC      aarch64-softmmu/target/arm/crypto_helper.o
/tmp/qemu-test/src/target/arm/translate-a64.c: In function 'handle_shri_with_rndacc':
/tmp/qemu-test/src/target/arm/translate-a64.c:6390: warning: 'tcg_src_hi' may be used uninitialized in this function
/tmp/qemu-test/src/target/arm/translate-a64.c: In function 'disas_simd_scalar_two_reg_misc':
/tmp/qemu-test/src/target/arm/translate-a64.c:8117: warning: 'rmode' may be used uninitialized in this function
  GEN     trace/generated-helpers.c
  CC      aarch64-softmmu/trace/control-target.o
  CC      aarch64-softmmu/gdbstub-xml.o
  CC      aarch64-softmmu/trace/generated-helpers.o
  LINK    aarch64-softmmu/qemu-system-aarch64
mkdir -p dtc/libfdt
mkdir -p dtc/tests
	 LEX convert-dtsv0-lexer.lex.c
make[1]: flex: Command not found
	 BISON dtc-parser.tab.c
make[1]: bison: Command not found
	 LEX dtc-lexer.lex.c
make[1]: flex: Command not found
install -d -m 0755 "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/share/qemu"
install -d -m 0755 "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/var"/run
install -d -m 0755 "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin"
install -c -m 0755 qemu-ga ivshmem-client ivshmem-server qemu-nbd qemu-img qemu-io  scsi/qemu-pr-helper "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin"
strip "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin/qemu-ga" "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin/ivshmem-client" "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin/ivshmem-server" "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin/qemu-nbd" "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin/qemu-img" "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin/qemu-io" "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin/qemu-pr-helper"
install -d -m 0755 "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/libexec"
install -c -m 0755 qemu-bridge-helper "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/libexec"
strip "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/libexec/qemu-bridge-helper"
set -e; for x in bios.bin bios-256k.bin sgabios.bin vgabios.bin vgabios-cirrus.bin vgabios-stdvga.bin vgabios-vmware.bin vgabios-qxl.bin vgabios-virtio.bin acpi-dsdt.aml ppc_rom.bin openbios-sparc32 openbios-sparc64 openbios-ppc QEMU,tcx.bin QEMU,cgthree.bin pxe-e1000.rom pxe-eepro100.rom pxe-ne2k_pci.rom pxe-pcnet.rom pxe-rtl8139.rom pxe-virtio.rom efi-e1000.rom efi-eepro100.rom efi-ne2k_pci.rom efi-pcnet.rom efi-rtl8139.rom efi-virtio.rom efi-e1000e.rom efi-vmxnet3.rom qemu-icon.bmp qemu_logo_no_text.svg bamboo.dtb petalogix-s3adsp1800.dtb petalogix-ml605.dtb multiboot.bin linuxboot.bin linuxboot_dma.bin kvmvapic.bin s390-ccw.img s390-netboot.img spapr-rtas.bin slof.bin skiboot.lid palcode-clipper u-boot.e500 qemu_vga.ndrv; do \
		install -c -m 0644 /tmp/qemu-test/src/pc-bios/$x "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/share/qemu"; \
	done
install -d -m 0755 "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/share/qemu/keymaps"
set -e; for x in da     en-gb  et  fr     fr-ch  is  lt  modifiers  no  pt-br  sv ar      de     en-us  fi  fr-be  hr     it  lv  nl         pl  ru     th common  de-ch  es     fo  fr-ca  hu     ja  mk  nl-be      pt  sl     tr bepo    cz; do \
		install -c -m 0644 /tmp/qemu-test/src/pc-bios/keymaps/$x "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/share/qemu/keymaps"; \
	done
install -c -m 0644 /tmp/qemu-test/build/trace-events-all "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/share/qemu/trace-events-all"
for d in x86_64-softmmu aarch64-softmmu; do \
	make --no-print-directory BUILD_DIR=/tmp/qemu-test/build TARGET_DIR=$d/ -C $d install || exit 1 ; \
        done
install -d -m 0755 "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin"
install -c -m 0755 qemu-system-x86_64  "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin"
strip "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin/qemu-system-x86_64"
install -d -m 0755 "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin"
install -c -m 0755 qemu-system-aarch64  "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin"
strip "/tmp/qemu-test/build/=destdir/tmp/qemu-test/install/bin/qemu-system-aarch64"
    CLEANUP /var/tmp/patchew-tester-tmp-g_i2minb/src/docker-src.2017-10-31-14.28.25.30666 
make[1]: Leaving directory '/var/tmp/patchew-tester-tmp-g_i2minb/src'

real	1m35.907s
user	0m4.333s
sys	0m4.557s
  BUILD   fedora
make[1]: Entering directory '/var/tmp/patchew-tester-tmp-g_i2minb/src'
  GEN     /var/tmp/patchew-tester-tmp-g_i2minb/src/docker-src.2017-10-31-14.30.01.4789/qemu.tar
Cloning into '/var/tmp/patchew-tester-tmp-g_i2minb/src/docker-src.2017-10-31-14.30.01.4789/qemu.tar.vroot'...
done.
Checking out files:  44% (2526/5658)   
Checking out files:  45% (2547/5658)   
Checking out files:  46% (2603/5658)   
Checking out files:  47% (2660/5658)   
Checking out files:  48% (2716/5658)   
Checking out files:  49% (2773/5658)   
Checking out files:  50% (2829/5658)   
Checking out files:  51% (2886/5658)   
Checking out files:  52% (2943/5658)   
Checking out files:  53% (2999/5658)   
Checking out files:  54% (3056/5658)   
Checking out files:  55% (3112/5658)   
Checking out files:  56% (3169/5658)   
Checking out files:  57% (3226/5658)   
Checking out files:  58% (3282/5658)   
Checking out files:  59% (3339/5658)   
Checking out files:  60% (3395/5658)   
Checking out files:  61% (3452/5658)   
Checking out files:  62% (3508/5658)   
Checking out files:  63% (3565/5658)   
Checking out files:  64% (3622/5658)   
Checking out files:  65% (3678/5658)   
Checking out files:  66% (3735/5658)   
Checking out files:  67% (3791/5658)   
Checking out files:  68% (3848/5658)   
Checking out files:  69% (3905/5658)   
Checking out files:  70% (3961/5658)   
Checking out files:  71% (4018/5658)   
Checking out files:  72% (4074/5658)   
Checking out files:  73% (4131/5658)   
Checking out files:  74% (4187/5658)   
Checking out files:  75% (4244/5658)   
Checking out files:  76% (4301/5658)   
Checking out files:  77% (4357/5658)   
Checking out files:  78% (4414/5658)   
Checking out files:  79% (4470/5658)   
Checking out files:  80% (4527/5658)   
Checking out files:  81% (4583/5658)   
Checking out files:  81% (4608/5658)   
Checking out files:  82% (4640/5658)   
Checking out files:  83% (4697/5658)   
Checking out files:  84% (4753/5658)   
Checking out files:  85% (4810/5658)   
Checking out files:  86% (4866/5658)   
Checking out files:  87% (4923/5658)   
Checking out files:  88% (4980/5658)   
Checking out files:  89% (5036/5658)   
Checking out files:  90% (5093/5658)   
Checking out files:  91% (5149/5658)   
Checking out files:  92% (5206/5658)   
Checking out files:  93% (5262/5658)   
Checking out files:  94% (5319/5658)   
Checking out files:  95% (5376/5658)   
Checking out files:  96% (5432/5658)   
Checking out files:  97% (5489/5658)   
Checking out files:  98% (5545/5658)   
Checking out files:  99% (5602/5658)   
Checking out files: 100% (5658/5658)   
Checking out files: 100% (5658/5658), done.
Your branch is up-to-date with 'origin/test'.
Submodule 'dtc' (git://git.qemu-project.org/dtc.git) registered for path 'dtc'
Cloning into '/var/tmp/patchew-tester-tmp-g_i2minb/src/docker-src.2017-10-31-14.30.01.4789/qemu.tar.vroot/dtc'...
Submodule path 'dtc': checked out '558cd81bdd432769b59bff01240c44f82cfb1a9d'
Submodule 'ui/keycodemapdb' (git://git.qemu.org/keycodemapdb.git) registered for path 'ui/keycodemapdb'
Cloning into '/var/tmp/patchew-tester-tmp-g_i2minb/src/docker-src.2017-10-31-14.30.01.4789/qemu.tar.vroot/ui/keycodemapdb'...
Submodule path 'ui/keycodemapdb': checked out '10739aa26051a5d49d88132604539d3ed085e72e'
  COPY    RUNNER
    RUN test-mingw in qemu:fedora 
Packages installed:
PyYAML-3.11-13.fc25.x86_64
SDL-devel-1.2.15-21.fc24.x86_64
bc-1.06.95-16.fc24.x86_64
bison-3.0.4-4.fc24.x86_64
bzip2-1.0.6-21.fc25.x86_64
ccache-3.3.4-1.fc25.x86_64
clang-3.9.1-2.fc25.x86_64
findutils-4.6.0-8.fc25.x86_64
flex-2.6.0-3.fc25.x86_64
gcc-6.4.1-1.fc25.x86_64
gcc-c++-6.4.1-1.fc25.x86_64
gettext-0.19.8.1-3.fc25.x86_64
git-2.9.5-1.fc25.x86_64
glib2-devel-2.50.3-1.fc25.x86_64
hostname-3.15-8.fc25.x86_64
libaio-devel-0.3.110-6.fc24.x86_64
libfdt-devel-1.4.2-1.fc25.x86_64
make-4.1-6.fc25.x86_64
mingw32-SDL-1.2.15-7.fc24.noarch
mingw32-bzip2-1.0.6-7.fc24.noarch
mingw32-curl-7.47.0-1.fc24.noarch
mingw32-glib2-2.50.3-1.fc25.noarch
mingw32-gmp-6.1.1-1.fc25.noarch
mingw32-gnutls-3.5.5-2.fc25.noarch
mingw32-gtk2-2.24.31-2.fc25.noarch
mingw32-gtk3-3.22.17-1.fc25.noarch
mingw32-libjpeg-turbo-1.5.1-1.fc25.noarch
mingw32-libpng-1.6.27-1.fc25.noarch
mingw32-libssh2-1.4.3-5.fc24.noarch
mingw32-libtasn1-4.9-1.fc25.noarch
mingw32-nettle-3.3-1.fc25.noarch
mingw32-pixman-0.34.0-1.fc25.noarch
mingw32-pkg-config-0.28-6.fc24.x86_64
mingw64-SDL-1.2.15-7.fc24.noarch
mingw64-bzip2-1.0.6-7.fc24.noarch
mingw64-curl-7.47.0-1.fc24.noarch
mingw64-glib2-2.50.3-1.fc25.noarch
mingw64-gmp-6.1.1-1.fc25.noarch
mingw64-gnutls-3.5.5-2.fc25.noarch
mingw64-gtk2-2.24.31-2.fc25.noarch
mingw64-gtk3-3.22.17-1.fc25.noarch
mingw64-libjpeg-turbo-1.5.1-1.fc25.noarch
mingw64-libpng-1.6.27-1.fc25.noarch
mingw64-libssh2-1.4.3-5.fc24.noarch
mingw64-libtasn1-4.9-1.fc25.noarch
mingw64-nettle-3.3-1.fc25.noarch
mingw64-pixman-0.34.0-1.fc25.noarch
mingw64-pkg-config-0.28-6.fc24.x86_64
nettle-devel-3.3-1.fc25.x86_64
package python2 is not installed
perl-5.24.2-387.fc25.x86_64
pixman-devel-0.34.0-2.fc24.x86_64
sparse-0.5.0-10.fc25.x86_64
tar-1.29-3.fc25.x86_64
which-2.21-1.fc25.x86_64
zlib-devel-1.2.8-10.fc24.x86_64

Environment variables:
PACKAGES=ccache gettext git tar PyYAML sparse flex bison python2 bzip2 hostname     glib2-devel pixman-devel zlib-devel SDL-devel libfdt-devel     gcc gcc-c++ clang make perl which bc findutils libaio-devel     nettle-devel     mingw32-pixman mingw32-glib2 mingw32-gmp mingw32-SDL mingw32-pkg-config     mingw32-gtk2 mingw32-gtk3 mingw32-gnutls mingw32-nettle mingw32-libtasn1     mingw32-libjpeg-turbo mingw32-libpng mingw32-curl mingw32-libssh2     mingw32-bzip2     mingw64-pixman mingw64-glib2 mingw64-gmp mingw64-SDL mingw64-pkg-config     mingw64-gtk2 mingw64-gtk3 mingw64-gnutls mingw64-nettle mingw64-libtasn1     mingw64-libjpeg-turbo mingw64-libpng mingw64-curl mingw64-libssh2     mingw64-bzip2
HOSTNAME=6d12042da3a6
MAKEFLAGS= -j8
J=8
CCACHE_DIR=/var/tmp/ccache
EXTRA_CONFIGURE_OPTS=
V=
SHOW_ENV=1
PATH=/usr/lib/ccache:/usr/lib64/ccache:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
PWD=/
TARGET_LIST=
FGC=f25
SHLVL=1
HOME=/root
TEST_DIR=/tmp/qemu-test
DISTTAG=f25container
FEATURES=mingw clang pyyaml dtc
DEBUG=
_=/usr/bin/env

Configure options:
--enable-werror --target-list=x86_64-softmmu,aarch64-softmmu --prefix=/tmp/qemu-test/install --cross-prefix=x86_64-w64-mingw32- --enable-trace-backends=simple --enable-debug --enable-gnutls --enable-nettle --enable-curl --enable-vnc --enable-bzip2 --enable-guest-agent --with-sdlabi=1.2 --with-gtkabi=2.0
Install prefix    /tmp/qemu-test/install
BIOS directory    /tmp/qemu-test/install
firmware path     /tmp/qemu-test/install/share/qemu-firmware
binary directory  /tmp/qemu-test/install
library directory /tmp/qemu-test/install/lib
module directory  /tmp/qemu-test/install/lib
libexec directory /tmp/qemu-test/install/libexec
include directory /tmp/qemu-test/install/include
config directory  /tmp/qemu-test/install
local state directory   queried at runtime
Windows SDK       no
Source path       /tmp/qemu-test/src
GIT submodules    
C compiler        x86_64-w64-mingw32-gcc
Host C compiler   cc
C++ compiler      x86_64-w64-mingw32-g++
Objective-C compiler clang
ARFLAGS           rv
CFLAGS            -g 
QEMU_CFLAGS       -I/usr/x86_64-w64-mingw32/sys-root/mingw/include/pixman-1  -I$(SRC_PATH)/dtc/libfdt -Werror -mms-bitfields -I/usr/x86_64-w64-mingw32/sys-root/mingw/include/glib-2.0 -I/usr/x86_64-w64-mingw32/sys-root/mingw/lib/glib-2.0/include -I/usr/x86_64-w64-mingw32/sys-root/mingw/include  -m64 -mcx16 -mthreads -D__USE_MINGW_ANSI_STDIO=1 -DWIN32_LEAN_AND_MEAN -DWINVER=0x501 -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -Wstrict-prototypes -Wredundant-decls -Wall -Wundef -Wwrite-strings -Wmissing-prototypes -fno-strict-aliasing -fno-common -fwrapv  -Wendif-labels -Wno-shift-negative-value -Wno-missing-include-dirs -Wempty-body -Wnested-externs -Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers -Wold-style-declaration -Wold-style-definition -Wtype-limits -fstack-protector-strong -I/usr/x86_64-w64-mingw32/sys-root/mingw/include -I/usr/x86_64-w64-mingw32/sys-root/mingw/include/p11-kit-1 -I/usr/x86_64-w64-mingw32/sys-root/mingw/include  -I/usr/x86_64-w64-mingw32/sys-root/mingw/include   -I/usr/x86_64-w64-mingw32/sys-root/mingw/include/libpng16 
LDFLAGS           -Wl,--nxcompat -Wl,--no-seh -Wl,--dynamicbase -Wl,--warn-common -m64 -g 
make              make
install           install
python            python -B
smbd              /usr/sbin/smbd
module support    no
host CPU          x86_64
host big endian   no
target list       x86_64-softmmu aarch64-softmmu
gprof enabled     no
sparse enabled    no
strip binaries    no
profiler          no
static build      no
SDL support       yes (1.2.15)
GTK support       yes (2.24.31)
GTK GL support    no
VTE support       no 
TLS priority      NORMAL
GNUTLS support    yes
GNUTLS rnd        yes
libgcrypt         no
libgcrypt kdf     no
nettle            yes (3.3)
nettle kdf        yes
libtasn1          yes
curses support    no
virgl support     no
curl support      yes
mingw32 support   yes
Audio drivers     dsound
Block whitelist (rw) 
Block whitelist (ro) 
VirtFS support    no
Multipath support no
VNC support       yes
VNC SASL support  no
VNC JPEG support  yes
VNC PNG support   yes
xen support       no
brlapi support    no
bluez  support    no
Documentation     no
PIE               no
vde support       no
netmap support    no
Linux AIO support no
ATTR/XATTR support no
Install blobs     yes
KVM support       no
HAX support       yes
TCG support       yes
TCG debug enabled yes
TCG interpreter   no
RDMA support      no
fdt support       yes
preadv support    no
fdatasync         no
madvise           no
posix_madvise     no
libcap-ng support no
vhost-net support no
vhost-scsi support no
vhost-vsock support no
vhost-user support no
Trace backends    simple
Trace output file trace-<pid>
spice support     no 
rbd support       no
xfsctl support    no
smartcard support no
libusb            no
usb net redir     no
OpenGL support    no
OpenGL dmabufs    no
libiscsi support  no
libnfs support    no
build guest agent yes
QGA VSS support   no
QGA w32 disk info yes
QGA MSI support   no
seccomp support   no
coroutine backend win32
coroutine pool    yes
debug stack usage no
crypto afalg      no
GlusterFS support no
gcov              gcov
gcov enabled      no
TPM support       yes
libssh2 support   yes
TPM passthrough   no
TPM emulator      no
QOM debugging     yes
Live block migration yes
lzo support       no
snappy support    no
bzip2 support     yes
NUMA host support no
tcmalloc support  no
jemalloc support  no
avx2 optimization yes
replication support yes
VxHS block device no
capstone          no
mkdir -p dtc/libfdt
mkdir -p dtc/tests
  GEN     x86_64-softmmu/config-devices.mak.tmp
  GEN     aarch64-softmmu/config-devices.mak.tmp
  GEN     qmp-commands.h
  GEN     config-host.h
  GEN     qemu-options.def
  GEN     qapi-visit.h
  GEN     qapi-types.h
  GEN     qapi-event.h
  GEN     x86_64-softmmu/config-devices.mak
  GEN     qmp-marshal.c
  GEN     aarch64-softmmu/config-devices.mak
  GEN     qapi-types.c
  GEN     qapi-visit.c
  GEN     qapi-event.c
  GEN     qmp-introspect.h
  GEN     qmp-introspect.c
  GEN     trace/generated-tcg-tracers.h
  GEN     trace/generated-helpers.h
  GEN     trace/generated-helpers-wrappers.h
  GEN     module_block.h
  GEN     trace/generated-helpers.c
  GEN     ui/input-keymap-linux-to-qcode.c
  GEN     ui/input-keymap-qcode-to-qnum.c
  GEN     ui/input-keymap-qnum-to-qcode.c
  GEN     tests/test-qapi-types.h
  GEN     tests/test-qmp-commands.h
  GEN     tests/test-qapi-visit.h
  GEN     tests/test-qapi-event.h
  GEN     trace-root.h
  GEN     tests/test-qmp-introspect.h
  GEN     util/trace.h
  GEN     crypto/trace.h
  GEN     io/trace.h
  GEN     migration/trace.h
  GEN     block/trace.h
  GEN     chardev/trace.h
  GEN     hw/block/trace.h
  GEN     hw/block/dataplane/trace.h
  GEN     hw/char/trace.h
  GEN     hw/intc/trace.h
  GEN     hw/net/trace.h
  GEN     hw/virtio/trace.h
  GEN     hw/audio/trace.h
  GEN     hw/misc/trace.h
  GEN     hw/usb/trace.h
  GEN     hw/scsi/trace.h
  GEN     hw/nvram/trace.h
  GEN     hw/display/trace.h
  GEN     hw/input/trace.h
  GEN     hw/timer/trace.h
  GEN     hw/dma/trace.h
  GEN     hw/sparc/trace.h
  GEN     hw/sd/trace.h
  GEN     hw/isa/trace.h
  GEN     hw/mem/trace.h
  GEN     hw/i386/trace.h
  GEN     hw/i386/xen/trace.h
  GEN     hw/9pfs/trace.h
  GEN     hw/ppc/trace.h
  GEN     hw/pci/trace.h
  GEN     hw/s390x/trace.h
  GEN     hw/vfio/trace.h
  GEN     hw/acpi/trace.h
  GEN     hw/arm/trace.h
  GEN     hw/alpha/trace.h
  GEN     hw/xen/trace.h
  GEN     hw/ide/trace.h
  GEN     ui/trace.h
  GEN     audio/trace.h
  GEN     net/trace.h
  GEN     target/arm/trace.h
  GEN     target/i386/trace.h
  GEN     target/mips/trace.h
  GEN     target/sparc/trace.h
  GEN     target/s390x/trace.h
  GEN     target/ppc/trace.h
  GEN     qom/trace.h
  GEN     linux-user/trace.h
  GEN     qapi/trace.h
  GEN     accel/tcg/trace.h
  GEN     accel/kvm/trace.h
  GEN     nbd/trace.h
  GEN     scsi/trace.h
  GEN     trace-root.c
  GEN     util/trace.c
  GEN     crypto/trace.c
  GEN     io/trace.c
  GEN     migration/trace.c
  GEN     block/trace.c
  GEN     chardev/trace.c
  GEN     hw/block/trace.c
  GEN     hw/block/dataplane/trace.c
  GEN     hw/char/trace.c
  GEN     hw/intc/trace.c
  GEN     hw/net/trace.c
  GEN     hw/virtio/trace.c
  GEN     hw/audio/trace.c
  GEN     hw/misc/trace.c
  GEN     hw/usb/trace.c
  GEN     hw/scsi/trace.c
  GEN     hw/nvram/trace.c
  GEN     hw/display/trace.c
  GEN     hw/input/trace.c
  GEN     hw/timer/trace.c
  GEN     hw/dma/trace.c
  GEN     hw/sparc/trace.c
  GEN     hw/sd/trace.c
  GEN     hw/isa/trace.c
  GEN     hw/mem/trace.c
  GEN     hw/i386/trace.c
  GEN     hw/i386/xen/trace.c
  GEN     hw/9pfs/trace.c
  GEN     hw/ppc/trace.c
  GEN     hw/pci/trace.c
  GEN     hw/s390x/trace.c
  GEN     hw/vfio/trace.c
  GEN     hw/acpi/trace.c
  GEN     hw/arm/trace.c
  GEN     hw/alpha/trace.c
  GEN     hw/xen/trace.c
  GEN     hw/ide/trace.c
  GEN     ui/trace.c
  GEN     audio/trace.c
  GEN     net/trace.c
  GEN     target/arm/trace.c
  GEN     target/i386/trace.c
  GEN     target/mips/trace.c
  GEN     target/sparc/trace.c
  GEN     target/s390x/trace.c
  GEN     target/ppc/trace.c
  GEN     qom/trace.c
  GEN     linux-user/trace.c
  GEN     qapi/trace.c
  GEN     accel/tcg/trace.c
  GEN     accel/kvm/trace.c
  GEN     nbd/trace.c
  GEN     scsi/trace.c
  GEN     config-all-devices.mak
	 DEP /tmp/qemu-test/src/dtc/tests/dumptrees.c
	 DEP /tmp/qemu-test/src/dtc/tests/testutils.c
	 DEP /tmp/qemu-test/src/dtc/tests/trees.S
	 DEP /tmp/qemu-test/src/dtc/tests/value-labels.c
	 DEP /tmp/qemu-test/src/dtc/tests/asm_tree_dump.c
	 DEP /tmp/qemu-test/src/dtc/tests/check_path.c
	 DEP /tmp/qemu-test/src/dtc/tests/truncated_property.c
	 DEP /tmp/qemu-test/src/dtc/tests/overlay_bad_fixup.c
	 DEP /tmp/qemu-test/src/dtc/tests/subnode_iterate.c
	 DEP /tmp/qemu-test/src/dtc/tests/overlay.c
	 DEP /tmp/qemu-test/src/dtc/tests/property_iterate.c
	 DEP /tmp/qemu-test/src/dtc/tests/integer-expressions.c
	 DEP /tmp/qemu-test/src/dtc/tests/path_offset_aliases.c
	 DEP /tmp/qemu-test/src/dtc/tests/utilfdt_test.c
	 DEP /tmp/qemu-test/src/dtc/tests/add_subnode_with_nops.c
	 DEP /tmp/qemu-test/src/dtc/tests/dtbs_equal_unordered.c
	 DEP /tmp/qemu-test/src/dtc/tests/dtbs_equal_ordered.c
	 DEP /tmp/qemu-test/src/dtc/tests/dtb_reverse.c
	 DEP /tmp/qemu-test/src/dtc/tests/extra-terminating-null.c
	 DEP /tmp/qemu-test/src/dtc/tests/incbin.c
	 DEP /tmp/qemu-test/src/dtc/tests/boot-cpuid.c
	 DEP /tmp/qemu-test/src/dtc/tests/phandle_format.c
	 DEP /tmp/qemu-test/src/dtc/tests/path-references.c
	 DEP /tmp/qemu-test/src/dtc/tests/references.c
	 DEP /tmp/qemu-test/src/dtc/tests/string_escapes.c
	 DEP /tmp/qemu-test/src/dtc/tests/appendprop2.c
	 DEP /tmp/qemu-test/src/dtc/tests/appendprop1.c
	 DEP /tmp/qemu-test/src/dtc/tests/propname_escapes.c
	 DEP /tmp/qemu-test/src/dtc/tests/del_node.c
	 DEP /tmp/qemu-test/src/dtc/tests/del_property.c
	 DEP /tmp/qemu-test/src/dtc/tests/setprop.c
	 DEP /tmp/qemu-test/src/dtc/tests/set_name.c
	 DEP /tmp/qemu-test/src/dtc/tests/rw_tree1.c
	 DEP /tmp/qemu-test/src/dtc/tests/nopulate.c
	 DEP /tmp/qemu-test/src/dtc/tests/open_pack.c
	 DEP /tmp/qemu-test/src/dtc/tests/mangle-layout.c
	 DEP /tmp/qemu-test/src/dtc/tests/move_and_save.c
	 DEP /tmp/qemu-test/src/dtc/tests/sw_tree1.c
	 DEP /tmp/qemu-test/src/dtc/tests/nop_node.c
	 DEP /tmp/qemu-test/src/dtc/tests/nop_property.c
	 DEP /tmp/qemu-test/src/dtc/tests/stringlist.c
	 DEP /tmp/qemu-test/src/dtc/tests/setprop_inplace.c
	 DEP /tmp/qemu-test/src/dtc/tests/addr_size_cells.c
	 DEP /tmp/qemu-test/src/dtc/tests/notfound.c
	 DEP /tmp/qemu-test/src/dtc/tests/sized_cells.c
	 DEP /tmp/qemu-test/src/dtc/tests/char_literal.c
	 DEP /tmp/qemu-test/src/dtc/tests/get_alias.c
	 DEP /tmp/qemu-test/src/dtc/tests/node_offset_by_compatible.c
	 DEP /tmp/qemu-test/src/dtc/tests/node_check_compatible.c
	 DEP /tmp/qemu-test/src/dtc/tests/node_offset_by_phandle.c
	 DEP /tmp/qemu-test/src/dtc/tests/node_offset_by_prop_value.c
	 DEP /tmp/qemu-test/src/dtc/tests/parent_offset.c
	 DEP /tmp/qemu-test/src/dtc/tests/supernode_atdepth_offset.c
	 DEP /tmp/qemu-test/src/dtc/tests/get_path.c
	 DEP /tmp/qemu-test/src/dtc/tests/get_phandle.c
	 DEP /tmp/qemu-test/src/dtc/tests/getprop.c
	 DEP /tmp/qemu-test/src/dtc/tests/get_name.c
	 DEP /tmp/qemu-test/src/dtc/tests/path_offset.c
	 DEP /tmp/qemu-test/src/dtc/tests/subnode_offset.c
	 DEP /tmp/qemu-test/src/dtc/tests/find_property.c
	 DEP /tmp/qemu-test/src/dtc/tests/root_node.c
	 DEP /tmp/qemu-test/src/dtc/tests/get_mem_rsv.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_overlay.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_addresses.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_empty_tree.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_strerror.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_rw.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_sw.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_wip.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt_ro.c
	 DEP /tmp/qemu-test/src/dtc/libfdt/fdt.c
	 DEP /tmp/qemu-test/src/dtc/util.c
	 DEP /tmp/qemu-test/src/dtc/fdtput.c
	 DEP /tmp/qemu-test/src/dtc/fdtget.c
	 DEP /tmp/qemu-test/src/dtc/fdtdump.c
	 LEX convert-dtsv0-lexer.lex.c
	 DEP /tmp/qemu-test/src/dtc/srcpos.c
	 BISON dtc-parser.tab.c
	 LEX dtc-lexer.lex.c
	 DEP /tmp/qemu-test/src/dtc/treesource.c
	 DEP /tmp/qemu-test/src/dtc/livetree.c
	 DEP /tmp/qemu-test/src/dtc/flattree.c
	 DEP /tmp/qemu-test/src/dtc/dtc.c
	 DEP /tmp/qemu-test/src/dtc/fstree.c
	 DEP /tmp/qemu-test/src/dtc/checks.c
	 DEP /tmp/qemu-test/src/dtc/data.c
	 DEP convert-dtsv0-lexer.lex.c
	 DEP dtc-parser.tab.c
	 DEP dtc-lexer.lex.c
	CHK version_gen.h
	UPD version_gen.h
	 DEP /tmp/qemu-test/src/dtc/util.c
	 CC libfdt/fdt.o
	 CC libfdt/fdt_ro.o
	 CC libfdt/fdt_wip.o
	 CC libfdt/fdt_rw.o
	 CC libfdt/fdt_sw.o
	 CC libfdt/fdt_strerror.o
	 CC libfdt/fdt_empty_tree.o
	 CC libfdt/fdt_addresses.o
	 CC libfdt/fdt_overlay.o
	 AR libfdt/libfdt.a
x86_64-w64-mingw32-ar: creating libfdt/libfdt.a
a - libfdt/fdt.o
a - libfdt/fdt_ro.o
a - libfdt/fdt_wip.o
a - libfdt/fdt_sw.o
a - libfdt/fdt_rw.o
a - libfdt/fdt_strerror.o
a - libfdt/fdt_empty_tree.o
a - libfdt/fdt_addresses.o
a - libfdt/fdt_overlay.o
  RC      version.o
mkdir -p dtc/libfdt
mkdir -p dtc/tests
  GEN     qga/qapi-generated/qga-qapi-types.h
  GEN     qga/qapi-generated/qga-qmp-commands.h
  GEN     qga/qapi-generated/qga-qapi-types.c
  GEN     qga/qapi-generated/qga-qapi-visit.c
  GEN     qga/qapi-generated/qga-qmp-marshal.c
  GEN     qga/qapi-generated/qga-qapi-visit.h
  CC      qapi-types.o
  CC      qmp-introspect.o
  CC      qapi-visit.o
  CC      qapi-event.o
  CC      qapi/qapi-visit-core.o
  CC      qapi/qapi-dealloc-visitor.o
  CC      qapi/qobject-input-visitor.o
  CC      qapi/qobject-output-visitor.o
  CC      qapi/qmp-registry.o
  CC      qapi/qmp-dispatch.o
  CC      qapi/string-output-visitor.o
  CC      qapi/string-input-visitor.o
  CC      qapi/opts-visitor.o
  CC      qapi/qapi-clone-visitor.o
  CC      qapi/qapi-util.o
  CC      qobject/qnull.o
  CC      qobject/qnum.o
  CC      qapi/qmp-event.o
  CC      qobject/qstring.o
  CC      qobject/qlist.o
  CC      qobject/qdict.o
  CC      qobject/qjson.o
  CC      qobject/qlit.o
  CC      qobject/qbool.o
  CC      qobject/qobject.o
  CC      qobject/json-lexer.o
  CC      qobject/json-streamer.o
  CC      qobject/json-parser.o
  CC      trace/simple.o
  CC      trace/qmp.o
  CC      util/osdep.o
  CC      util/cutils.o
  CC      trace/control.o
  CC      util/unicode.o
  CC      util/bufferiszero.o
  CC      util/qemu-timer-common.o
  CC      util/aiocb.o
  CC      util/lockcnt.o
  CC      util/async.o
  CC      util/thread-pool.o
  CC      util/qemu-timer.o
  CC      util/main-loop.o
  CC      util/iohandler.o
  CC      util/aio-win32.o
  CC      util/event_notifier-win32.o
  CC      util/oslib-win32.o
  CC      util/qemu-thread-win32.o
  CC      util/path.o
  CC      util/envlist.o
  CC      util/module.o
  CC      util/host-utils.o
  CC      util/bitmap.o
  CC      util/bitops.o
  CC      util/hbitmap.o
  CC      util/fifo8.o
  CC      util/acl.o
  CC      util/cacheinfo.o
  CC      util/error.o
  CC      util/qemu-error.o
  CC      util/id.o
  CC      util/iov.o
  CC      util/qemu-config.o
  CC      util/qemu-sockets.o
  CC      util/uri.o
  CC      util/notify.o
  CC      util/qemu-progress.o
  CC      util/qemu-option.o
  CC      util/keyval.o
  CC      util/hexdump.o
  CC      util/crc32c.o
  CC      util/uuid.o
  CC      util/throttle.o
  CC      util/readline.o
  CC      util/getauxval.o
  CC      util/rcu.o
  CC      util/qemu-coroutine.o
  CC      util/qemu-coroutine-io.o
  CC      util/qemu-coroutine-lock.o
/tmp/qemu-test/src/util/qemu-thread-win32.c:59:38: error: expected declaration specifiers or '...' before string constant
 void qemu_mutex_lock(QemuMutex *mutex)
                                      ^
/tmp/qemu-test/src/util/qemu-thread-win32.c:59:38: error: expected declaration specifiers or '...' before numeric constant
 void qemu_mutex_lock(QemuMutex *mutex)
                                      ^
/tmp/qemu-test/src/util/qemu-thread-win32.c:66:40: error: expected declaration specifiers or '...' before string constant
 int qemu_mutex_trylock(QemuMutex *mutex)
                                        ^
/tmp/qemu-test/src/util/qemu-thread-win32.c:66:40: error: expected declaration specifiers or '...' before numeric constant
 int qemu_mutex_trylock(QemuMutex *mutex)
                                        ^
/tmp/qemu-test/src/util/qemu-thread-win32.c:79:40: error: expected declaration specifiers or '...' before string constant
 void qemu_mutex_unlock(QemuMutex *mutex)
                                        ^
/tmp/qemu-test/src/util/qemu-thread-win32.c:79:40: error: expected declaration specifiers or '...' before numeric constant
 void qemu_mutex_unlock(QemuMutex *mutex)
                                        ^
/tmp/qemu-test/src/util/qemu-thread-win32.c:143:53: error: expected declaration specifiers or '...' before string constant
 void qemu_cond_wait(QemuCond *cond, QemuMutex *mutex)
                                                     ^
/tmp/qemu-test/src/util/qemu-thread-win32.c:143:53: error: expected declaration specifiers or '...' before numeric constant
 void qemu_cond_wait(QemuCond *cond, QemuMutex *mutex)
                                                     ^
make: *** [util/qemu-thread-win32.o] Error 1
make: *** Waiting for unfinished jobs....
/tmp/qemu-test/src/rules.mak:66: recipe for target 'util/qemu-thread-win32.o' failed
Traceback (most recent call last):
  File "./tests/docker/docker.py", line 385, in <module>
    sys.exit(main())
  File "./tests/docker/docker.py", line 382, in main
    return args.cmdobj.run(args, argv)
  File "./tests/docker/docker.py", line 239, in run
    return Docker().run(argv, args.keep, quiet=args.quiet)
  File "./tests/docker/docker.py", line 207, in run
    quiet=quiet)
  File "./tests/docker/docker.py", line 125, in _do_check
    return subprocess.check_call(self._command + cmd, **kwargs)
  File "/usr/lib64/python2.7/subprocess.py", line 186, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['docker', 'run', '--label', 'com.qemu.instance.uuid=883a3f9cbe6911e78d5452540069c830', '-u', '0', '--security-opt', 'seccomp=unconfined', '--rm', '--net=none', '-e', 'TARGET_LIST=', '-e', 'EXTRA_CONFIGURE_OPTS=', '-e', 'V=', '-e', 'J=8', '-e', 'DEBUG=', '-e', 'SHOW_ENV=1', '-e', 'CCACHE_DIR=/var/tmp/ccache', '-v', '/root/.cache/qemu-docker-ccache:/var/tmp/ccache:z', '-v', '/var/tmp/patchew-tester-tmp-g_i2minb/src/docker-src.2017-10-31-14.30.01.4789:/var/tmp/qemu:z,ro', 'qemu:fedora', '/var/tmp/qemu/run', 'test-mingw']' returned non-zero exit status 2
make[1]: *** [tests/docker/Makefile.include:129: docker-run] Error 1
make[1]: Leaving directory '/var/tmp/patchew-tester-tmp-g_i2minb/src'
make: *** [tests/docker/Makefile.include:163: docker-run-test-mingw@fedora] Error 2

real	1m25.348s
user	0m4.077s
sys	0m4.170s
=== OUTPUT END ===

Test command exited with code: 2


---
Email generated automatically by Patchew [http://patchew.org/].
Please send your feedback to patchew-devel@freelists.org

Re: [Qemu-devel] [RFC PATCH 13/26] cpus: only take BQL for sleeping threads

[Paolo Bonzini]

On 31/10/2017 12:26, Pavel Dovgalyuk wrote:
> From: Alex Bennée <alex.bennee@linaro.org>
> 
> Now the only real need to hold the BQL is for when we sleep on the
> cpu->halt conditional. The lock is actually dropped while the thread
> sleeps so the actual window for contention is pretty small. This also
> means we can remove the special case hack for exclusive work and
> simply declare that work no longer has an implicit BQL held. This
> isn't a major problem async work is generally only changing things in
> the context of its own vCPU. If it needs to work across vCPUs it
> should be using the exclusive mechanism or possibly taking the lock
> itself.
> 
> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
> Tested-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

At least cpu_throttle_thread would fail with this patch.

Also I am not sure if the s390 SIGP handlers are ready for this.

Paolo

> 
> ---
>  cpus-common.c |   13 +++++--------
>  cpus.c        |   10 ++++------
>  2 files changed, 9 insertions(+), 14 deletions(-)
> 
> diff --git a/cpus-common.c b/cpus-common.c
> index 59f751e..64661c3 100644
> --- a/cpus-common.c
> +++ b/cpus-common.c
> @@ -310,6 +310,11 @@ void async_safe_run_on_cpu(CPUState *cpu, run_on_cpu_func func,
>      queue_work_on_cpu(cpu, wi);
>  }
>  
> +/* Work items run outside of the BQL. This is essential for avoiding a
> + * deadlock for exclusive work but also applies to non-exclusive work.
> + * If the work requires cross-vCPU changes then it should use the
> + * exclusive mechanism.
> + */
>  void process_queued_cpu_work(CPUState *cpu)
>  {
>      struct qemu_work_item *wi;
> @@ -327,17 +332,9 @@ void process_queued_cpu_work(CPUState *cpu)
>          }
>          qemu_mutex_unlock(&cpu->work_mutex);
>          if (wi->exclusive) {
> -            /* Running work items outside the BQL avoids the following deadlock:
> -             * 1) start_exclusive() is called with the BQL taken while another
> -             * CPU is running; 2) cpu_exec in the other CPU tries to takes the
> -             * BQL, so it goes to sleep; start_exclusive() is sleeping too, so
> -             * neither CPU can proceed.
> -             */
> -            qemu_mutex_unlock_iothread();
>              start_exclusive();
>              wi->func(cpu, wi->data);
>              end_exclusive();
> -            qemu_mutex_lock_iothread();
>          } else {
>              wi->func(cpu, wi->data);
>          }
> diff --git a/cpus.c b/cpus.c
> index efde5c1..de6dfce 100644
> --- a/cpus.c
> +++ b/cpus.c
> @@ -1127,31 +1127,29 @@ static bool qemu_tcg_should_sleep(CPUState *cpu)
>  
>  static void qemu_tcg_wait_io_event(CPUState *cpu)
>  {
> -    qemu_mutex_lock_iothread();
>  
>      while (qemu_tcg_should_sleep(cpu)) {
> +        qemu_mutex_lock_iothread();
>          stop_tcg_kick_timer();
>          qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex);
> +        qemu_mutex_unlock_iothread();
>      }
>  
>      start_tcg_kick_timer();
>  
>      qemu_wait_io_event_common(cpu);
> -
> -    qemu_mutex_unlock_iothread();
>  }
>  
>  static void qemu_kvm_wait_io_event(CPUState *cpu)
>  {
> -    qemu_mutex_lock_iothread();
>  
>      while (cpu_thread_is_idle(cpu)) {
> +        qemu_mutex_lock_iothread();
>          qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex);
> +        qemu_mutex_unlock_iothread();
>      }
>  
>      qemu_wait_io_event_common(cpu);
> -
> -    qemu_mutex_unlock_iothread();
>  }
>  
>  static void *qemu_kvm_cpu_thread_fn(void *arg)
> 

Re: [Qemu-devel] [RFC PATCH 19/26] cpu-exec: reset exit flag before calling cpu_exec_nocache

[Paolo Bonzini]

On 31/10/2017 12:26, Pavel Dovgalyuk wrote:
> This patch resets icount_decr.u32.high before calling cpu_exec_nocache
> when exception is pending. Exception is caused by the first instruction
> in the block and it cannot be executed without resetting the flag.
> 
> Signed-off-by: Maria Klimushenkova <maria.klimushenkova@ispras.ru>
> Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
> 
> ---
>  accel/tcg/cpu-exec.c |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
> index 35d0240..aaa9c2d 100644
> --- a/accel/tcg/cpu-exec.c
> +++ b/accel/tcg/cpu-exec.c
> @@ -500,6 +500,7 @@ static inline bool cpu_handle_exception(CPUState *cpu, int *ret)
>      } else if (replay_has_exception()
>                 && cpu->icount_decr.u16.low + cpu->icount_extra == 0) {
>          /* try to cause an exception pending in the log */
> +        atomic_set(&cpu->icount_decr.u16.high, 0);
>          cpu_exec_nocache(cpu, 1, tb_find(cpu, NULL, 0, curr_cflags()), true);
>          *ret = -1;
>          return true;
> 

I am not sure about this.  I think if instead you should return false 
from here and EXCP_INTERRUPT from cpu_exec.

More important: there is still a race, because high can be set to -1 
right after your atomic_set.  Maybe:

1) you should only return true if cpu->exception_index was set by 
cpu_exec_nocache?

2) you should not do

    *ret = -1;
    return true;

and instead do

    if (cpu->exception_index < 0 &&
        replay_has_exception() &&
        cpu->icount_decr.u16.low + cpu->icount_extra == 0) {
           /* try to cause an exception pending in the log */
           cpu_exec_nocache(cpu, 1, tb_find(cpu, NULL, 0, curr_cflags()), true);
        }
    }
    if (cpu->exception_index >= 0) {
        ...
    }
    return false;

Paolo

Re: [Qemu-devel] [RFC PATCH 19/26] cpu-exec: reset exit flag before calling cpu_exec_nocache

[Pavel Dovgalyuk]

> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
> On 31/10/2017 12:26, Pavel Dovgalyuk wrote:
> > This patch resets icount_decr.u32.high before calling cpu_exec_nocache
> > when exception is pending. Exception is caused by the first instruction
> > in the block and it cannot be executed without resetting the flag.
> >
> > Signed-off-by: Maria Klimushenkova <maria.klimushenkova@ispras.ru>
> > Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
> >
> > ---
> >  accel/tcg/cpu-exec.c |    1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
> > index 35d0240..aaa9c2d 100644
> > --- a/accel/tcg/cpu-exec.c
> > +++ b/accel/tcg/cpu-exec.c
> > @@ -500,6 +500,7 @@ static inline bool cpu_handle_exception(CPUState *cpu, int *ret)
> >      } else if (replay_has_exception()
> >                 && cpu->icount_decr.u16.low + cpu->icount_extra == 0) {
> >          /* try to cause an exception pending in the log */
> > +        atomic_set(&cpu->icount_decr.u16.high, 0);
> >          cpu_exec_nocache(cpu, 1, tb_find(cpu, NULL, 0, curr_cflags()), true);
> >          *ret = -1;
> >          return true;
> >
> 
> I am not sure about this.  I think if instead you should return false
> from here and EXCP_INTERRUPT from cpu_exec.

The problem is inside the TB. It checks cpu->icount_decr.u16.high which is -1.
And we have to enter the TB to cause an exception (because it exists in replay log).
That is why we reset this flag and try to execute the TB.

> More important: there is still a race, because high can be set to -1
> right after your atomic_set.

I'm not sure about it. But even the race exists, exec_nocache attempt will be repeated
after failed try.

Returning true is ok here, because we know that exception will happen (because it is
recorded in the log).

Pavel Dovgalyuk

Re: [Qemu-devel] [RFC PATCH 12/26] cpus: push BQL lock to qemu_*_wait_io_event

[Paolo Bonzini]

On 31/10/2017 12:26, Pavel Dovgalyuk wrote:
>          hax_vcpu_interrupt(env);
>  
> -        qemu_mutex_unlock_iothread();
>          cpu_exec_start(cpu);
>          hax_ret = hax_vcpu_run(vcpu);
> +        current_cpu = cpu;

This assignment makes little sense, this is a thread-local variable and
should always be equal to cpu.  Rebase conflict?

Paolo

>          cpu_exec_end(cpu);
> -        qemu_mutex_lock_iothread();

Re: [Qemu-devel] [RFC PATCH 10/26] icount: fixed saving/restoring of icount warp timers

[Paolo Bonzini]

On 31/10/2017 12:25, Pavel Dovgalyuk wrote:
> +        VMSTATE_INT64(vm_clock_warp_start, TimersState),

This should be part of the icount_vmstate_warp_timer subsection.

Paolo

>          VMSTATE_END_OF_LIST()
> +    },
> +    .subsections = (const VMStateDescription*[]) {
> +        &icount_vmstate_warp_timer,
> +        &icount_vmstate_adjust_timers,
> +        NULL
>      }
>  };
>  

Re: [Qemu-devel] [RFC PATCH 08/26] replay: make safe vmstop at record/replay

[Paolo Bonzini]

On 31/10/2017 12:25, Pavel Dovgalyuk wrote:
>  
> -    bdrv_drain_all();
> -    replay_disable_events();
> -    ret = bdrv_flush_all();
> +    if (!replay_events_enabled()) {
> +        bdrv_drain_all();
> +        ret = bdrv_flush_all();
> +    }
>  
>      return ret;
>  }
> diff --git a/migration/savevm.c b/migration/savevm.c
> index 20cebe1..41a13c0 100644
> --- a/migration/savevm.c
> +++ b/migration/savevm.c
> @@ -2143,8 +2143,8 @@ int save_snapshot(const char *name, Error **errp)
>      AioContext *aio_context;
>  
>      if (!replay_can_snapshot()) {
> -        monitor_printf(mon, "Record/replay does not allow making snapshot "
> -                        "right now. Try once more later.\n");
> +        error_report("Record/replay does not allow making snapshot "
> +                     "right now. Try once more later.\n");

Why this change?

Paolo

>          return ret;

Re: [Qemu-devel] [RFC PATCH 19/26] cpu-exec: reset exit flag before calling cpu_exec_nocache

[Paolo Bonzini]

On 02/11/2017 12:24, Pavel Dovgalyuk wrote:
>> I am not sure about this.  I think if instead you should return false
>> from here and EXCP_INTERRUPT from cpu_exec.
> The problem is inside the TB. It checks cpu->icount_decr.u16.high which is -1.
> And we have to enter the TB to cause an exception (because it exists in replay log).
> That is why we reset this flag and try to execute the TB.

But if u16.high is -1, shouldn't you return EXCP_INTERRUPT first (via
"Finally, check if we need to exit to the main loop" in
cpu_handle_interrupt)?  Then only cause the exception when that one is
processed.

Paolo

>> More important: there is still a race, because high can be set to -1
>> right after your atomic_set.
> I'm not sure about it. But even the race exists, exec_nocache attempt will be repeated
> after failed try.
> 
> Returning true is ok here, because we know that exception will happen (because it is
> recorded in the log).

Re: [Qemu-devel] [RFC PATCH 19/26] cpu-exec: reset exit flag before calling cpu_exec_nocache

[Paolo Bonzini]

On 02/11/2017 12:33, Paolo Bonzini wrote:
> On 02/11/2017 12:24, Pavel Dovgalyuk wrote:
>>> I am not sure about this.  I think if instead you should return false
>>> from here and EXCP_INTERRUPT from cpu_exec.
>> The problem is inside the TB. It checks cpu->icount_decr.u16.high which is -1.
>> And we have to enter the TB to cause an exception (because it exists in replay log).
>> That is why we reset this flag and try to execute the TB.
> 
> But if u16.high is -1, shouldn't you return EXCP_INTERRUPT first (via
> "Finally, check if we need to exit to the main loop" in
> cpu_handle_interrupt)?  Then only cause the exception when that one is
> processed.

... indeed, you probably need something like:

    /* Clear the interrupt flag now since we're processing
     * cpu->interrupt_request and cpu->exit_request.
     */
    insns_left = atomic_read(&cpu->icount_decr.u32);
    atomic_set(&cpu->icount_decr.u16.high, 0);
    if (unlikely(insns_left < 0) {
        /* Ensure the zeroing of icount_decr comes before the next read
         * of cpu->exit_request or cpu->interrupt_request.
         */
        smb_mb();
    }

at the top of cpu_handle_interrupt.  Then you can remove the same
atomic_set+smp_mb in cpu_loop_exec_tb, like

    *last_tb = NULL;
    insns_left = atomic_read(&cpu->icount_decr.u32);
    if (insns_left < 0) {
        /* Something asked us to stop executing chained TBs; just
         * continue round the main loop. Whatever requested the exit
         * will also have set something else (eg exit_request or
         * interrupt_request) which will be handled by
         * cpu_handle_interrupt.  cpu_handle_interrupt will also
         * clear cpu->icount_decr.u16.high.
         */
        return;
    }

Thanks,

Paolo

Re: [Qemu-devel] [RFC PATCH 17/26] replay: push replay_mutex_lock up the call tree

[Paolo Bonzini]

On 31/10/2017 12:26, Pavel Dovgalyuk wrote:
> 
> +
>      if (timeout) {
>          spin_counter = 0;
> -        qemu_mutex_unlock_iothread();

This was done on purpose because it improved performance.  It's probably
pointless now that TCG runs outside the iothread, but it should be a
separate patch.

>      } else {
>          spin_counter++;
>      }
> +    qemu_mutex_unlock_iothread();
> +
> +    if (replay_mode != REPLAY_MODE_NONE) {
> +        replay_mutex_unlock();
> +    }

This is quite ugly.  Perhaps you can push the "if" down inside the
functions?

Paolo

>      ret = qemu_poll_ns((GPollFD *)gpollfds->data, gpollfds->len, timeout);
>  
> -    if (timeout) {
> -        qemu_mutex_lock_iothread();
> +    if (replay_mode != REPLAY_MODE_NONE) {
> +        replay_mutex_lock();
>      }
>  
> +    qemu_mutex_lock_iothread();
> +

Re: [Qemu-devel] [RFC PATCH 08/26] replay: make safe vmstop at record/replay

[Pavel Dovgalyuk]

> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
> On 31/10/2017 12:25, Pavel Dovgalyuk wrote:
> >
> > -    bdrv_drain_all();
> > -    replay_disable_events();
> > -    ret = bdrv_flush_all();
> > +    if (!replay_events_enabled()) {
> > +        bdrv_drain_all();
> > +        ret = bdrv_flush_all();
> > +    }
> >
> >      return ret;
> >  }
> > diff --git a/migration/savevm.c b/migration/savevm.c
> > index 20cebe1..41a13c0 100644
> > --- a/migration/savevm.c
> > +++ b/migration/savevm.c
> > @@ -2143,8 +2143,8 @@ int save_snapshot(const char *name, Error **errp)
> >      AioContext *aio_context;
> >
> >      if (!replay_can_snapshot()) {
> > -        monitor_printf(mon, "Record/replay does not allow making snapshot "
> > -                        "right now. Try once more later.\n");
> > +        error_report("Record/replay does not allow making snapshot "
> > +                     "right now. Try once more later.\n");
> 
> Why this change?

Kind of a mess in changes.
It should be in patch 06 which introduce these lines.
I'll fix it in the next version.

Pavel Dovgalyuk

Re: [Qemu-devel] [RFC PATCH 17/26] replay: push replay_mutex_lock up the call tree

[Paolo Bonzini]

On 31/10/2017 12:26, Pavel Dovgalyuk wrote:
> +    /* We need to drop the replay_lock so any vCPU threads woken up
> +     * can finish their replay tasks
> +     */
> +    if (replay_mode != REPLAY_MODE_NONE) {
> +        g_assert(replay_mutex_locked());
> +        qemu_mutex_unlock_iothread();
> +        replay_mutex_unlock();
> +        qemu_mutex_lock_iothread();
> +    }

The assert+unlock+lock here is unnecessary; just do

    if (replay_mode != REPLAY_MODE_NONE) {
        replay_mutex_unlock();
    }

which according to a previous suggestion can become just

    replay_mutex_unlock();

>      while (!all_vcpus_paused()) {
>          qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex);
>          CPU_FOREACH(cpu) {
>              qemu_cpu_kick(cpu);
>          }
>      }
> +
> +    if (replay_mode != REPLAY_MODE_NONE) {
> +        qemu_mutex_unlock_iothread();
> +        replay_mutex_lock();
> +        qemu_mutex_lock_iothread();
> +    }

Likewise, this is not a fast path so:

       qemu_mutex_unlock_iothread();
       if (replay_mode != REPLAY_MODE_NONE) {
           replay_mutex_lock();
       }
       qemu_mutex_lock_iothread();

or, applying the same previous suggestion,

       /* Unlock iothread to preserve lock hierarchy.  */
       qemu_mutex_unlock_iothread();
       replay_mutex_lock();
       qemu_mutex_lock_iothread();

Paolo

Re: [Qemu-devel] [RFC PATCH 08/26] replay: make safe vmstop at record/replay

[Paolo Bonzini]

On 02/11/2017 12:57, Pavel Dovgalyuk wrote:
>> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
>> On 31/10/2017 12:25, Pavel Dovgalyuk wrote:
>>>
>>> -    bdrv_drain_all();
>>> -    replay_disable_events();
>>> -    ret = bdrv_flush_all();
>>> +    if (!replay_events_enabled()) {
>>> +        bdrv_drain_all();
>>> +        ret = bdrv_flush_all();
>>> +    }
>>>
>>>      return ret;
>>>  }
>>> diff --git a/migration/savevm.c b/migration/savevm.c
>>> index 20cebe1..41a13c0 100644
>>> --- a/migration/savevm.c
>>> +++ b/migration/savevm.c
>>> @@ -2143,8 +2143,8 @@ int save_snapshot(const char *name, Error **errp)
>>>      AioContext *aio_context;
>>>
>>>      if (!replay_can_snapshot()) {
>>> -        monitor_printf(mon, "Record/replay does not allow making snapshot "
>>> -                        "right now. Try once more later.\n");
>>> +        error_report("Record/replay does not allow making snapshot "
>>> +                     "right now. Try once more later.\n");
>>
>> Why this change?
> 
> Kind of a mess in changes.
> It should be in patch 06 which introduce these lines.
> I'll fix it in the next version.

No problem.  Remember to delete the \n too since otherwise patchew
complains.

Paolo

Re: [Qemu-devel] [RFC PATCH 08/26] replay: make safe vmstop at record/replay

[Pavel Dovgalyuk]

> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
> >>> diff --git a/migration/savevm.c b/migration/savevm.c
> >>> index 20cebe1..41a13c0 100644
> >>> --- a/migration/savevm.c
> >>> +++ b/migration/savevm.c
> >>> @@ -2143,8 +2143,8 @@ int save_snapshot(const char *name, Error **errp)
> >>>      AioContext *aio_context;
> >>>
> >>>      if (!replay_can_snapshot()) {
> >>> -        monitor_printf(mon, "Record/replay does not allow making snapshot "
> >>> -                        "right now. Try once more later.\n");
> >>> +        error_report("Record/replay does not allow making snapshot "
> >>> +                     "right now. Try once more later.\n");
> >>
> >> Why this change?
> >
> > Kind of a mess in changes.
> > It should be in patch 06 which introduce these lines.
> > I'll fix it in the next version.
> 
> No problem.  Remember to delete the \n too since otherwise patchew
> complains.

Is this ok for the line over 80 symbols here?

Pavel Dovgalyuk

Re: [Qemu-devel] [RFC PATCH 08/26] replay: make safe vmstop at record/replay

[Paolo Bonzini]

On 02/11/2017 13:04, Pavel Dovgalyuk wrote:
>> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
>>>>> diff --git a/migration/savevm.c b/migration/savevm.c
>>>>> index 20cebe1..41a13c0 100644
>>>>> --- a/migration/savevm.c
>>>>> +++ b/migration/savevm.c
>>>>> @@ -2143,8 +2143,8 @@ int save_snapshot(const char *name, Error **errp)
>>>>>      AioContext *aio_context;
>>>>>
>>>>>      if (!replay_can_snapshot()) {
>>>>> -        monitor_printf(mon, "Record/replay does not allow making snapshot "
>>>>> -                        "right now. Try once more later.\n");
>>>>> +        error_report("Record/replay does not allow making snapshot "
>>>>> +                     "right now. Try once more later.\n");
>>>>
>>>> Why this change?
>>>
>>> Kind of a mess in changes.
>>> It should be in patch 06 which introduce these lines.
>>> I'll fix it in the next version.
>>
>> No problem.  Remember to delete the \n too since otherwise patchew
>> complains.
> 
> Is this ok for the line over 80 symbols here?

Patchew (and checkpatch) are complaining about the \n in the string,
i.e. "later.\n" -> "later.".

Thanks,

Paolo

Re: [Qemu-devel] [RFC PATCH 19/26] cpu-exec: reset exit flag before calling cpu_exec_nocache

[Pavel Dovgalyuk]

> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
> On 02/11/2017 12:24, Pavel Dovgalyuk wrote:
> >> I am not sure about this.  I think if instead you should return false
> >> from here and EXCP_INTERRUPT from cpu_exec.
> > The problem is inside the TB. It checks cpu->icount_decr.u16.high which is -1.
> > And we have to enter the TB to cause an exception (because it exists in replay log).
> > That is why we reset this flag and try to execute the TB.
> 
> But if u16.high is -1, shouldn't you return EXCP_INTERRUPT first (via
> "Finally, check if we need to exit to the main loop" in
> cpu_handle_interrupt)?  Then only cause the exception when that one is
> processed.

The case is the following.
1. There are no pending instructions to execute, cpu_loop_exec_tb finished.
2. There are no interrupts and cpu_handle_interrupt sets cpu->exception_index = EXCP_INTERRUPT
3. There are no pending exceptions and cpu_handle_exception goes to the last branch,
   because there is an exception flag in the log.
4. cpu_exec_nocache translates the block and tries to execute it, causing an exception

> 
> Paolo
> 
> >> More important: there is still a race, because high can be set to -1
> >> right after your atomic_set.
> > I'm not sure about it. But even the race exists, exec_nocache attempt will be repeated
> > after failed try.
> >
> > Returning true is ok here, because we know that exception will happen (because it is
> > recorded in the log).


Pavel Dovgalyuk

Re: [Qemu-devel] [RFC PATCH 19/26] cpu-exec: reset exit flag before calling cpu_exec_nocache

[Paolo Bonzini]

On 02/11/2017 13:45, Pavel Dovgalyuk wrote:
>> But if u16.high is -1, shouldn't you return EXCP_INTERRUPT first (via
>> "Finally, check if we need to exit to the main loop" in
>> cpu_handle_interrupt)?  Then only cause the exception when that one is
>> processed.
> The case is the following.
> 1. There are no pending instructions to execute, cpu_loop_exec_tb finished.
> 2. There are no interrupts and cpu_handle_interrupt sets cpu->exception_index = EXCP_INTERRUPT
> 3. There are no pending exceptions and cpu_handle_exception goes to the last branch,
>    because there is an exception flag in the log.
> 4. cpu_exec_nocache translates the block and tries to execute it, causing an exception
> 

Then the fix is indeed to clear u16.high in cpu_handle_interrupt instead
of cpu_loop_exec_tb---see my other reply.

Paolo

Re: [Qemu-devel] [RFC PATCH 13/26] cpus: only take BQL for sleeping threads

[David Hildenbrand]

On 02.11.2017 12:08, Paolo Bonzini wrote:
> On 31/10/2017 12:26, Pavel Dovgalyuk wrote:
>> From: Alex Bennée <alex.bennee@linaro.org>
>>
>> Now the only real need to hold the BQL is for when we sleep on the
>> cpu->halt conditional. The lock is actually dropped while the thread
>> sleeps so the actual window for contention is pretty small. This also
>> means we can remove the special case hack for exclusive work and
>> simply declare that work no longer has an implicit BQL held. This
>> isn't a major problem async work is generally only changing things in
>> the context of its own vCPU. If it needs to work across vCPUs it
>> should be using the exclusive mechanism or possibly taking the lock
>> itself.
>>
>> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
>> Tested-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
> 
> At least cpu_throttle_thread would fail with this patch.
> 
> Also I am not sure if the s390 SIGP handlers are ready for this.
> 

We have a global lock to the SIGP "facility". However we need the BQL in
order to inject interrupts into CPUs (otherwise it would trigger an
assert when injecting).

We inject Restart and Stop interrupts from run_on_cpu. This requires the
BQL. So Paolo should be right, this change would break s390x.


> Paolo


-- 

Thanks,

David

Re: [Qemu-devel] [RFC PATCH 13/26] cpus: only take BQL for sleeping threads

[Paolo Bonzini]

----- Original Message -----
> From: "David Hildenbrand" <david@redhat.com>
> To: "Paolo Bonzini" <pbonzini@redhat.com>, "Pavel Dovgalyuk" <Pavel.Dovgaluk@ispras.ru>, qemu-devel@nongnu.org
> Cc: kwolf@redhat.com, "peter maydell" <peter.maydell@linaro.org>, "boost lists" <boost.lists@gmail.com>,
> quintela@redhat.com, jasowang@redhat.com, mst@redhat.com, zuban32s@gmail.com, "maria klimushenkova"
> <maria.klimushenkova@ispras.ru>, dovgaluk@ispras.ru, kraxel@redhat.com, "alex bennee" <alex.bennee@linaro.org>
> Sent: Thursday, November 2, 2017 7:39:22 PM
> Subject: Re: [RFC PATCH 13/26] cpus: only take BQL for sleeping threads
> 
> On 02.11.2017 12:08, Paolo Bonzini wrote:
> > On 31/10/2017 12:26, Pavel Dovgalyuk wrote:
> >> From: Alex Bennée <alex.bennee@linaro.org>
> >>
> >> Now the only real need to hold the BQL is for when we sleep on the
> >> cpu->halt conditional. The lock is actually dropped while the thread
> >> sleeps so the actual window for contention is pretty small. This also
> >> means we can remove the special case hack for exclusive work and
> >> simply declare that work no longer has an implicit BQL held. This
> >> isn't a major problem async work is generally only changing things in
> >> the context of its own vCPU. If it needs to work across vCPUs it
> >> should be using the exclusive mechanism or possibly taking the lock
> >> itself.
> >>
> >> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
> >> Tested-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
> > 
> > At least cpu_throttle_thread would fail with this patch.
> > 
> > Also I am not sure if the s390 SIGP handlers are ready for this.
> > 
> 
> We have a global lock to the SIGP "facility". However we need the BQL in
> order to inject interrupts into CPUs (otherwise it would trigger an
> assert when injecting).
> 
> We inject Restart and Stop interrupts from run_on_cpu. This requires the
> BQL. So Paolo should be right, this change would break s390x.

I had some patches to access interrupt_request with the atomic builtins.  If
Pavel can first extract the other changes to the icount mechanism, I can
update them.

Paolo

Re: [Qemu-devel] [RFC PATCH 19/26] cpu-exec: reset exit flag before calling cpu_exec_nocache

[Pavel Dovgalyuk]

> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
> On 02/11/2017 12:33, Paolo Bonzini wrote:
> > On 02/11/2017 12:24, Pavel Dovgalyuk wrote:
> >>> I am not sure about this.  I think if instead you should return false
> >>> from here and EXCP_INTERRUPT from cpu_exec.
> >> The problem is inside the TB. It checks cpu->icount_decr.u16.high which is -1.
> >> And we have to enter the TB to cause an exception (because it exists in replay log).
> >> That is why we reset this flag and try to execute the TB.
> >
> > But if u16.high is -1, shouldn't you return EXCP_INTERRUPT first (via
> > "Finally, check if we need to exit to the main loop" in
> > cpu_handle_interrupt)?  Then only cause the exception when that one is
> > processed.
> 
> ... indeed, you probably need something like:
> 
>     /* Clear the interrupt flag now since we're processing
>      * cpu->interrupt_request and cpu->exit_request.
>      */
>     insns_left = atomic_read(&cpu->icount_decr.u32);
>     atomic_set(&cpu->icount_decr.u16.high, 0);
>     if (unlikely(insns_left < 0) {
>         /* Ensure the zeroing of icount_decr comes before the next read
>          * of cpu->exit_request or cpu->interrupt_request.
>          */
>         smb_mb();
>     }
> 
> at the top of cpu_handle_interrupt.  Then you can remove the same
> atomic_set+smp_mb in cpu_loop_exec_tb, like
> 
>     *last_tb = NULL;
>     insns_left = atomic_read(&cpu->icount_decr.u32);
>     if (insns_left < 0) {
>         /* Something asked us to stop executing chained TBs; just
>          * continue round the main loop. Whatever requested the exit
>          * will also have set something else (eg exit_request or
>          * interrupt_request) which will be handled by
>          * cpu_handle_interrupt.  cpu_handle_interrupt will also
>          * clear cpu->icount_decr.u16.high.
>          */
>         return;
>     }

I tried this approach and it didn't work.
I think iothread sets u16.high flag after resetting it in cpu_handle_interrupt.

But there is another possible approach: set new tcg flag, which disables checking
the exit_request at the entry to the TB.


Pavel Dovgalyuk

Re: [Qemu-devel] [RFC PATCH 17/26] replay: push replay_mutex_lock up the call tree

[Pavel Dovgalyuk]

> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
> On 31/10/2017 12:26, Pavel Dovgalyuk wrote:
> > +    /* We need to drop the replay_lock so any vCPU threads woken up
> > +     * can finish their replay tasks
> > +     */
> > +    if (replay_mode != REPLAY_MODE_NONE) {
> > +        g_assert(replay_mutex_locked());
> > +        qemu_mutex_unlock_iothread();
> > +        replay_mutex_unlock();
> > +        qemu_mutex_lock_iothread();
> > +    }
> 
> The assert+unlock+lock here is unnecessary; just do
> 
>     if (replay_mode != REPLAY_MODE_NONE) {
>         replay_mutex_unlock();
>     }
> 
> which according to a previous suggestion can become just
> 
>     replay_mutex_unlock();

We can't remove qemu_mutex_unlock_iothread(), because there is an assert
inside replay_mutex_unlock(), which checks that iothread is unlocked.

> 
> >      while (!all_vcpus_paused()) {
> >          qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex);
> >          CPU_FOREACH(cpu) {
> >              qemu_cpu_kick(cpu);
> >          }
> >      }
> > +
> > +    if (replay_mode != REPLAY_MODE_NONE) {
> > +        qemu_mutex_unlock_iothread();
> > +        replay_mutex_lock();
> > +        qemu_mutex_lock_iothread();
> > +    }
> 

Pavel Dovgalyuk

Re: [Qemu-devel] [RFC PATCH 17/26] replay: push replay_mutex_lock up the call tree

[Alex Bennée]

Pavel Dovgalyuk <dovgaluk@ispras.ru> writes:

>> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
>> On 31/10/2017 12:26, Pavel Dovgalyuk wrote:
>> > +    /* We need to drop the replay_lock so any vCPU threads woken up
>> > +     * can finish their replay tasks
>> > +     */
>> > +    if (replay_mode != REPLAY_MODE_NONE) {
>> > +        g_assert(replay_mutex_locked());
>> > +        qemu_mutex_unlock_iothread();
>> > +        replay_mutex_unlock();
>> > +        qemu_mutex_lock_iothread();
>> > +    }
>>
>> The assert+unlock+lock here is unnecessary; just do
>>
>>     if (replay_mode != REPLAY_MODE_NONE) {
>>         replay_mutex_unlock();
>>     }
>>
>> which according to a previous suggestion can become just
>>
>>     replay_mutex_unlock();
>
> We can't remove qemu_mutex_unlock_iothread(), because there is an assert
> inside replay_mutex_unlock(), which checks that iothread is unlocked.

I'm certainly open to reviewing the locking order rules if it is easier
another way around. I'm just conscious that it's easy to deadlock if we
don't pay attention. This is what I wrote in replay.txt:

  Locking and thread synchronisation
  ----------------------------------

  Previously the synchronisation of the main thread and the vCPU thread
  was ensured by the holding of the BQL. However the trend has been to
  reduce the time the BQL was held across the system including under TCG
  system emulation. As it is important that batches of events are kept
  in sequence (e.g. expiring timers and checkpoints in the main thread
  while instruction checkpoints are written by the vCPU thread) we need
  another lock to keep things in lock-step. This role is now handled by
  the replay_mutex_lock. It used to be held only for each event being
  written but now it is held for a whole execution period. This results
  in a deterministic ping-pong between the two main threads.

  As deadlocks are easy to introduce a new rule is introduced that the
  replay_mutex_lock is taken before any BQL locks. Conversely you cannot
  release the replay_lock while the BQL is still held.

>
>>
>> >      while (!all_vcpus_paused()) {
>> >          qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex);
>> >          CPU_FOREACH(cpu) {
>> >              qemu_cpu_kick(cpu);
>> >          }
>> >      }
>> > +
>> > +    if (replay_mode != REPLAY_MODE_NONE) {
>> > +        qemu_mutex_unlock_iothread();
>> > +        replay_mutex_lock();
>> > +        qemu_mutex_lock_iothread();
>> > +    }
>>
>
> Pavel Dovgalyuk


--
Alex Bennée

Re: [Qemu-devel] [RFC PATCH 17/26] replay: push replay_mutex_lock up the call tree

[Paolo Bonzini]

On 03/11/2017 10:16, Pavel Dovgalyuk wrote:
>> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
>> On 31/10/2017 12:26, Pavel Dovgalyuk wrote:
>>> +    /* We need to drop the replay_lock so any vCPU threads woken up
>>> +     * can finish their replay tasks
>>> +     */
>>> +    if (replay_mode != REPLAY_MODE_NONE) {
>>> +        g_assert(replay_mutex_locked());
>>> +        qemu_mutex_unlock_iothread();
>>> +        replay_mutex_unlock();
>>> +        qemu_mutex_lock_iothread();
>>> +    }
>>
>> The assert+unlock+lock here is unnecessary; just do
>>
>>     if (replay_mode != REPLAY_MODE_NONE) {
>>         replay_mutex_unlock();
>>     }
>>
>> which according to a previous suggestion can become just
>>
>>     replay_mutex_unlock();
> 
> We can't remove qemu_mutex_unlock_iothread(), because there is an assert
> inside replay_mutex_unlock(), which checks that iothread is unlocked.

I think the assert is wrong.  Lock hierarchy only applies to lock, not
unlock.

Paolo

>>
>>>      while (!all_vcpus_paused()) {
>>>          qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex);
>>>          CPU_FOREACH(cpu) {
>>>              qemu_cpu_kick(cpu);
>>>          }
>>>      }
>>> +
>>> +    if (replay_mode != REPLAY_MODE_NONE) {
>>> +        qemu_mutex_unlock_iothread();
>>> +        replay_mutex_lock();
>>> +        qemu_mutex_lock_iothread();
>>> +    }
>>
> 
> Pavel Dovgalyuk
> 

Re: [Qemu-devel] [RFC PATCH 17/26] replay: push replay_mutex_lock up the call tree

[Paolo Bonzini]

On 03/11/2017 10:47, Alex Bennée wrote:
>   As deadlocks are easy to introduce a new rule is introduced that the
>   replay_mutex_lock is taken before any BQL locks. Conversely you cannot
>   release the replay_lock while the BQL is still held.

I agree with the former, but the latter is unnecessary.

Paolo

Re: [Qemu-devel] [RFC PATCH 17/26] replay: push replay_mutex_lock up the call tree

[Alex Bennée]

Paolo Bonzini <pbonzini@redhat.com> writes:

> On 03/11/2017 10:47, Alex Bennée wrote:
>>   As deadlocks are easy to introduce a new rule is introduced that the
>>   replay_mutex_lock is taken before any BQL locks. Conversely you cannot
>>   release the replay_lock while the BQL is still held.
>
> I agree with the former, but the latter is unnecessary.

I'm trying to think of occasions where this might cause us problems. The
BQL is a event level lock, generally held for HW event serialisation and
the replay_lock is synchronising batches of those events to the
advancement of "time". How about:

  As deadlocks are easy to introduce a new rule is introduced that the
  replay_mutex_lock is taken before any BQL locks. While you would
  usually unlock in the reverse order this isn't strictly enforced. The
  important thing is any work to record the state of a given hardware
  transaction has been completed as once the BQL is released the
  execution state may move on.

-- 
Alex Bennée

Re: [Qemu-devel] [RFC PATCH 17/26] replay: push replay_mutex_lock up the call tree

[Paolo Bonzini]

On 06/11/2017 14:05, Alex Bennée wrote:
> 
> Paolo Bonzini <pbonzini@redhat.com> writes:
> 
>> On 03/11/2017 10:47, Alex Bennée wrote:
>>>   As deadlocks are easy to introduce a new rule is introduced that the
>>>   replay_mutex_lock is taken before any BQL locks. Conversely you cannot
>>>   release the replay_lock while the BQL is still held.
>>
>> I agree with the former, but the latter is unnecessary.
> 
> I'm trying to think of occasions where this might cause us problems. The
> BQL is a event level lock, generally held for HW event serialisation and
> the replay_lock is synchronising batches of those events to the
> advancement of "time".

I would say that the BQL is "just" protecting data that has no other
finer-grain lock.

The replay_lock is (besides protecting record/replay status)
synchronizing events so that threads advance in lockstep, but the BQL is
also protecting things unrelated to recorded events.  For those it makes
sense to take the BQL without the replay lock.  Replacing
unlock_iothread/unlock_replay/lock_iothread with just unlock_replay is
only an optimization.

Paolo

> How about:
> 
>   As deadlocks are easy to introduce a new rule is introduced that the
>   replay_mutex_lock is taken before any BQL locks. While you would
>   usually unlock in the reverse order this isn't strictly enforced. The
>   important thing is any work to record the state of a given hardware
>   transaction has been completed as once the BQL is released the
>   execution state may move on.
> 

Re: [Qemu-devel] [RFC PATCH 19/26] cpu-exec: reset exit flag before calling cpu_exec_nocache

[Paolo Bonzini]

On 03/11/2017 09:27, Pavel Dovgalyuk wrote:
>> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
>> On 02/11/2017 12:33, Paolo Bonzini wrote:
>>> On 02/11/2017 12:24, Pavel Dovgalyuk wrote:
>>>>> I am not sure about this.  I think if instead you should return false
>>>>> from here and EXCP_INTERRUPT from cpu_exec.
>>>> The problem is inside the TB. It checks cpu->icount_decr.u16.high which is -1.
>>>> And we have to enter the TB to cause an exception (because it exists in replay log).
>>>> That is why we reset this flag and try to execute the TB.
>>>
>>> But if u16.high is -1, shouldn't you return EXCP_INTERRUPT first (via
>>> "Finally, check if we need to exit to the main loop" in
>>> cpu_handle_interrupt)?  Then only cause the exception when that one is
>>> processed.
>>
>> ... indeed, you probably need something like:
>>
>>     /* Clear the interrupt flag now since we're processing
>>      * cpu->interrupt_request and cpu->exit_request.
>>      */
>>     insns_left = atomic_read(&cpu->icount_decr.u32);
>>     atomic_set(&cpu->icount_decr.u16.high, 0);
>>     if (unlikely(insns_left < 0) {
>>         /* Ensure the zeroing of icount_decr comes before the next read
>>          * of cpu->exit_request or cpu->interrupt_request.
>>          */
>>         smb_mb();
>>     }
>>
>> at the top of cpu_handle_interrupt.  Then you can remove the same
>> atomic_set+smp_mb in cpu_loop_exec_tb, like
>>
>>     *last_tb = NULL;
>>     insns_left = atomic_read(&cpu->icount_decr.u32);
>>     if (insns_left < 0) {
>>         /* Something asked us to stop executing chained TBs; just
>>          * continue round the main loop. Whatever requested the exit
>>          * will also have set something else (eg exit_request or
>>          * interrupt_request) which will be handled by
>>          * cpu_handle_interrupt.  cpu_handle_interrupt will also
>>          * clear cpu->icount_decr.u16.high.
>>          */
>>         return;
>>     }
> 
> I tried this approach and it didn't work.
> I think iothread sets u16.high flag after resetting it in cpu_handle_interrupt.

But why is this a problem?  The TB would exit immediately and go again
to cpu_handle_interrupt.  cpu_handle_interrupt returns true and
cpu_handle_exception causes the exception via cpu_exec_nocache.

> But there is another possible approach: set new tcg flag, which disables checking
> the exit_request at the entry to the TB.

No, I don't want to add complication.  I want to understand what's going
on---it's always worked very well whenever you pushed new rr bits,
overall we ended up with a *simpler* CPU loop I think. :)

Paolo

Re: [Qemu-devel] [RFC PATCH 19/26] cpu-exec: reset exit flag before calling cpu_exec_nocache

[Alex Bennée]

Pavel Dovgalyuk <dovgaluk@ispras.ru> writes:

>> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
>> On 02/11/2017 12:33, Paolo Bonzini wrote:
>> > On 02/11/2017 12:24, Pavel Dovgalyuk wrote:
>> >>> I am not sure about this.  I think if instead you should return false
>> >>> from here and EXCP_INTERRUPT from cpu_exec.
>> >> The problem is inside the TB. It checks cpu->icount_decr.u16.high which is -1.
>> >> And we have to enter the TB to cause an exception (because it exists in replay log).
>> >> That is why we reset this flag and try to execute the TB.
>> >
>> > But if u16.high is -1, shouldn't you return EXCP_INTERRUPT first (via
>> > "Finally, check if we need to exit to the main loop" in
>> > cpu_handle_interrupt)?  Then only cause the exception when that one is
>> > processed.
>>
>> ... indeed, you probably need something like:
>>
>>     /* Clear the interrupt flag now since we're processing
>>      * cpu->interrupt_request and cpu->exit_request.
>>      */
>>     insns_left = atomic_read(&cpu->icount_decr.u32);
>>     atomic_set(&cpu->icount_decr.u16.high, 0);
>>     if (unlikely(insns_left < 0) {
>>         /* Ensure the zeroing of icount_decr comes before the next read
>>          * of cpu->exit_request or cpu->interrupt_request.
>>          */
>>         smb_mb();
>>     }
>>
>> at the top of cpu_handle_interrupt.  Then you can remove the same
>> atomic_set+smp_mb in cpu_loop_exec_tb, like
>>
>>     *last_tb = NULL;
>>     insns_left = atomic_read(&cpu->icount_decr.u32);
>>     if (insns_left < 0) {
>>         /* Something asked us to stop executing chained TBs; just
>>          * continue round the main loop. Whatever requested the exit
>>          * will also have set something else (eg exit_request or
>>          * interrupt_request) which will be handled by
>>          * cpu_handle_interrupt.  cpu_handle_interrupt will also
>>          * clear cpu->icount_decr.u16.high.
>>          */
>>         return;
>>     }
>
> I tried this approach and it didn't work.
> I think iothread sets u16.high flag after resetting it in cpu_handle_interrupt.
>
> But there is another possible approach: set new tcg flag, which disables checking
> the exit_request at the entry to the TB.

I'm instinctively wary of adding additional flags as it complicates the
number of exit states - especially as we went to the trouble of merging
it all into one (wide) flag.

Where in the TB is this exception we need to execute? It can't be more
than one instruction can it - otherwise the icount would be higher. Is
this an off-by-one issue?

Would another approach be to say:

  - icount is 0
  - we have a pending exception not yet generated

therefor

  - translate a new, non-cached, non-icount/exit checking, single
    instruction block for the exception

and then assert if an exception wasn't raised?

>
>
> Pavel Dovgalyuk


--
Alex Bennée

Re: [Qemu-devel] [RFC PATCH 17/26] replay: push replay_mutex_lock up the call tree

[Alex Bennée]

Paolo Bonzini <pbonzini@redhat.com> writes:

> On 06/11/2017 14:05, Alex Bennée wrote:
>>
>> Paolo Bonzini <pbonzini@redhat.com> writes:
>>
>>> On 03/11/2017 10:47, Alex Bennée wrote:
>>>>   As deadlocks are easy to introduce a new rule is introduced that the
>>>>   replay_mutex_lock is taken before any BQL locks. Conversely you cannot
>>>>   release the replay_lock while the BQL is still held.
>>>
>>> I agree with the former, but the latter is unnecessary.
>>
>> I'm trying to think of occasions where this might cause us problems. The
>> BQL is a event level lock, generally held for HW event serialisation and
>> the replay_lock is synchronising batches of those events to the
>> advancement of "time".
>
> I would say that the BQL is "just" protecting data that has no other
> finer-grain lock.
>
> The replay_lock is (besides protecting record/replay status)
> synchronizing events so that threads advance in lockstep, but the BQL is
> also protecting things unrelated to recorded events.  For those it makes
> sense to take the BQL without the replay lock.  Replacing
> unlock_iothread/unlock_replay/lock_iothread with just unlock_replay is
> only an optimization.

OK, let's revise to:

  Locking and thread synchronisation
  ----------------------------------

  Previously the synchronisation of the main thread and the vCPU thread
  was ensured by the holding of the BQL. However the trend has been to
  reduce the time the BQL was held across the system including under TCG
  system emulation. As it is important that batches of events are kept
  in sequence (e.g. expiring timers and checkpoints in the main thread
  while instruction checkpoints are written by the vCPU thread) we need
  another lock to keep things in lock-step. This role is now handled by
  the replay_mutex_lock. It used to be held only for each event being
  written but now it is held for a whole execution period. This results
  in a deterministic ping-pong between the two main threads.

  As the BQL is now a finer grained lock than the replay_lock it is
  almost certainly a bug taking the replay_mutex_lock while the BQL is
  held. This is enforced by an assert. While the unlocks are usually in
  the reverse order it is not necessary and therefor you can drop the
  replay_lock while holding the BQL rather than doing any more
  unlock/unlock/lock sequences.

>
> Paolo
>
>> How about:
>>
>>   As deadlocks are easy to introduce a new rule is introduced that the
>>   replay_mutex_lock is taken before any BQL locks. While you would
>>   usually unlock in the reverse order this isn't strictly enforced. The
>>   important thing is any work to record the state of a given hardware
>>   transaction has been completed as once the BQL is released the
>>   execution state may move on.
>>


--
Alex Bennée

Re: [Qemu-devel] [RFC PATCH 17/26] replay: push replay_mutex_lock up the call tree

[Paolo Bonzini]

On 06/11/2017 17:30, Alex Bennée wrote:
>   Previously the synchronisation of the main thread and the vCPU thread
>   was ensured by the holding of the BQL. However the trend has been to
>   reduce the time the BQL was held across the system including under TCG
>   system emulation. As it is important that batches of events are kept
>   in sequence (e.g. expiring timers and checkpoints in the main thread
>   while instruction checkpoints are written by the vCPU thread) we need
>   another lock to keep things in lock-step. This role is now handled by
>   the replay_mutex_lock. It used to be held only for each event being
>   written but now it is held for a whole execution period. This results
>   in a deterministic ping-pong between the two main threads.

I would remove the last two sentences (which might belong in a commit
message, but not in documentation).

>   As the BQL is now a finer grained lock than the replay_lock it is
>   almost certainly a bug taking the replay_mutex_lock while the BQL is
>   held. This is enforced by an assert. While the unlocks are usually in
>   the reverse order it is not necessary and therefor you can drop the
>   replay_lock while holding the BQL rather than doing any more
>   unlock/unlock/lock sequences.

As the BQL is now a finer grained lock than the replay_lock it is almost
certainly a bug, and a source of deadlocks, to take the
replay_mutex_lock while the BQL is held.  This is enforced by an assert.
 While the unlocks are usually in the reverse order, this is not
necessary; you can drop the replay_lock while holding the BQL, without
doing a more complicated unlock_iothread/replay_unlock/lock_iothread
sequence.

Paolo

Re: [Qemu-devel] [RFC PATCH 19/26] cpu-exec: reset exit flag before calling cpu_exec_nocache

[Pavel Dovgalyuk]

> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
> On 03/11/2017 09:27, Pavel Dovgalyuk wrote:
> >> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
> >> On 02/11/2017 12:33, Paolo Bonzini wrote:
> >>> On 02/11/2017 12:24, Pavel Dovgalyuk wrote:
> >>>>> I am not sure about this.  I think if instead you should return false
> >>>>> from here and EXCP_INTERRUPT from cpu_exec.
> >>>> The problem is inside the TB. It checks cpu->icount_decr.u16.high which is -1.
> >>>> And we have to enter the TB to cause an exception (because it exists in replay log).
> >>>> That is why we reset this flag and try to execute the TB.
> >>>
> >>> But if u16.high is -1, shouldn't you return EXCP_INTERRUPT first (via
> >>> "Finally, check if we need to exit to the main loop" in
> >>> cpu_handle_interrupt)?  Then only cause the exception when that one is
> >>> processed.
> >>
> >> ... indeed, you probably need something like:
> >>
> >>     /* Clear the interrupt flag now since we're processing
> >>      * cpu->interrupt_request and cpu->exit_request.
> >>      */
> >>     insns_left = atomic_read(&cpu->icount_decr.u32);
> >>     atomic_set(&cpu->icount_decr.u16.high, 0);
> >>     if (unlikely(insns_left < 0) {
> >>         /* Ensure the zeroing of icount_decr comes before the next read
> >>          * of cpu->exit_request or cpu->interrupt_request.
> >>          */
> >>         smb_mb();
> >>     }
> >>
> >> at the top of cpu_handle_interrupt.  Then you can remove the same
> >> atomic_set+smp_mb in cpu_loop_exec_tb, like
> >>
> >>     *last_tb = NULL;
> >>     insns_left = atomic_read(&cpu->icount_decr.u32);
> >>     if (insns_left < 0) {
> >>         /* Something asked us to stop executing chained TBs; just
> >>          * continue round the main loop. Whatever requested the exit
> >>          * will also have set something else (eg exit_request or
> >>          * interrupt_request) which will be handled by
> >>          * cpu_handle_interrupt.  cpu_handle_interrupt will also
> >>          * clear cpu->icount_decr.u16.high.
> >>          */
> >>         return;
> >>     }
> >
> > I tried this approach and it didn't work.
> > I think iothread sets u16.high flag after resetting it in cpu_handle_interrupt.
> 
> But why is this a problem?  The TB would exit immediately and go again
> to cpu_handle_interrupt.  cpu_handle_interrupt returns true and
> cpu_handle_exception causes the exception via cpu_exec_nocache.

I've tested your variant more thoroughly.
It seems, that iothread calls cpu_exec between atomic_set(&cpu->icount_decr.u16.high, 0); 
in cpu_handle_interrupt and cpu_exec_nocache in cpu_handle_exception.
I see no other reason, because this happens not for the every time.
And cpu_handle_interrupt is not called again, because cpu_handle_exception returns true.
Therefore we have an infinite loop, because no other code here resets cpu->icount_decr.u16.high.

Pavel Dovgalyuk

Re: [Qemu-devel] [RFC PATCH 19/26] cpu-exec: reset exit flag before calling cpu_exec_nocache

[Paolo Bonzini]

On 10/11/2017 09:20, Pavel Dovgalyuk wrote:
>> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
>> On 03/11/2017 09:27, Pavel Dovgalyuk wrote:
>>>> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
>>>> On 02/11/2017 12:33, Paolo Bonzini wrote:
>>>>> On 02/11/2017 12:24, Pavel Dovgalyuk wrote:
>>>>>>> I am not sure about this.  I think if instead you should return false
>>>>>>> from here and EXCP_INTERRUPT from cpu_exec.
>>>>>> The problem is inside the TB. It checks cpu->icount_decr.u16.high which is -1.
>>>>>> And we have to enter the TB to cause an exception (because it exists in replay log).
>>>>>> That is why we reset this flag and try to execute the TB.
>>>>>
>>>>> But if u16.high is -1, shouldn't you return EXCP_INTERRUPT first (via
>>>>> "Finally, check if we need to exit to the main loop" in
>>>>> cpu_handle_interrupt)?  Then only cause the exception when that one is
>>>>> processed.
>>>>
>>>> ... indeed, you probably need something like:
>>>>
>>>>     /* Clear the interrupt flag now since we're processing
>>>>      * cpu->interrupt_request and cpu->exit_request.
>>>>      */
>>>>     insns_left = atomic_read(&cpu->icount_decr.u32);
>>>>     atomic_set(&cpu->icount_decr.u16.high, 0);
>>>>     if (unlikely(insns_left < 0) {
>>>>         /* Ensure the zeroing of icount_decr comes before the next read
>>>>          * of cpu->exit_request or cpu->interrupt_request.
>>>>          */
>>>>         smb_mb();
>>>>     }
>>>>
>>>> at the top of cpu_handle_interrupt.  Then you can remove the same
>>>> atomic_set+smp_mb in cpu_loop_exec_tb, like
>>>>
>>>>     *last_tb = NULL;
>>>>     insns_left = atomic_read(&cpu->icount_decr.u32);
>>>>     if (insns_left < 0) {
>>>>         /* Something asked us to stop executing chained TBs; just
>>>>          * continue round the main loop. Whatever requested the exit
>>>>          * will also have set something else (eg exit_request or
>>>>          * interrupt_request) which will be handled by
>>>>          * cpu_handle_interrupt.  cpu_handle_interrupt will also
>>>>          * clear cpu->icount_decr.u16.high.
>>>>          */
>>>>         return;
>>>>     }
>>>
>>> I tried this approach and it didn't work.
>>> I think iothread sets u16.high flag after resetting it in cpu_handle_interrupt.
>>
>> But why is this a problem?  The TB would exit immediately and go again
>> to cpu_handle_interrupt.  cpu_handle_interrupt returns true and
>> cpu_handle_exception causes the exception via cpu_exec_nocache.
> 
> I've tested your variant more thoroughly.
> It seems, that iothread calls cpu_exec between atomic_set(&cpu->icount_decr.u16.high, 0); 
> in cpu_handle_interrupt and cpu_exec_nocache in cpu_handle_exception.
> I see no other reason, because this happens not for the every time.
> And cpu_handle_interrupt is not called again, because cpu_handle_exception returns true.
> Therefore we have an infinite loop, because no other code here resets cpu->icount_decr.u16.high.

Then returning true unconditionally is wrong in the cpu_exec_nocache
case.  What if you do:

diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
index 61297f8f4a..fb5446be3e 100644
--- a/accel/tcg/cpu-exec.c
+++ b/accel/tcg/cpu-exec.c
@@ -470,7 +470,19 @@ static inline void cpu_handle_debug_exception(CPUState *cpu)
 
 static inline bool cpu_handle_exception(CPUState *cpu, int *ret)
 {
-    if (cpu->exception_index >= 0) {
+    if (cpu->exception_index < 0) {
+#ifndef CONFIG_USER_ONLY
+        if (replay_has_exception()
+            && cpu->icount_decr.u16.low + cpu->icount_extra == 0) {
+            /* try to cause an exception pending in the log */
+            cpu_exec_nocache(cpu, 1, tb_find(cpu, NULL, 0, curr_cflags()), true);
+        }
+#endif
+        if (cpu->exception_index < 0) {
+            return;
+        }
+    }
+
         if (cpu->exception_index >= EXCP_INTERRUPT) {
             /* exit request from the cpu execution loop */
             *ret = cpu->exception_index;
@@ -505,16 +517,6 @@ static inline bool cpu_handle_exception(CPUState *cpu, int *ret)
             }
 #endif
         }
-#ifndef CONFIG_USER_ONLY
-    } else if (replay_has_exception()
-               && cpu->icount_decr.u16.low + cpu->icount_extra == 0) {
-        /* try to cause an exception pending in the log */
-        cpu_exec_nocache(cpu, 1, tb_find(cpu, NULL, 0, curr_cflags()), true);
-        *ret = -1;
-        return true;
-#endif
-    }
-
     return false;
 }
 

Re: [Qemu-devel] [RFC PATCH 19/26] cpu-exec: reset exit flag before calling cpu_exec_nocache

[Pavel Dovgalyuk]

> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
> >>>
> >>> I tried this approach and it didn't work.
> >>> I think iothread sets u16.high flag after resetting it in cpu_handle_interrupt.
> >>
> >> But why is this a problem?  The TB would exit immediately and go again
> >> to cpu_handle_interrupt.  cpu_handle_interrupt returns true and
> >> cpu_handle_exception causes the exception via cpu_exec_nocache.
> >
> > I've tested your variant more thoroughly.
> > It seems, that iothread calls cpu_exec between atomic_set(&cpu->icount_decr.u16.high, 0);
> > in cpu_handle_interrupt and cpu_exec_nocache in cpu_handle_exception.
> > I see no other reason, because this happens not for the every time.
> > And cpu_handle_interrupt is not called again, because cpu_handle_exception returns true.
> > Therefore we have an infinite loop, because no other code here resets cpu-
> >icount_decr.u16.high.
> 
> Then returning true unconditionally is wrong in the cpu_exec_nocache
> case.  What if you do:
> 
> diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
> index 61297f8f4a..fb5446be3e 100644
> --- a/accel/tcg/cpu-exec.c
> +++ b/accel/tcg/cpu-exec.c
> @@ -470,7 +470,19 @@ static inline void cpu_handle_debug_exception(CPUState *cpu)
> 
>  static inline bool cpu_handle_exception(CPUState *cpu, int *ret)
>  {
> -    if (cpu->exception_index >= 0) {
> +    if (cpu->exception_index < 0) {
> +#ifndef CONFIG_USER_ONLY
> +        if (replay_has_exception()
> +            && cpu->icount_decr.u16.low + cpu->icount_extra == 0) {
> +            /* try to cause an exception pending in the log */
> +            cpu_exec_nocache(cpu, 1, tb_find(cpu, NULL, 0, curr_cflags()), true);
> +        }
> +#endif
> +        if (cpu->exception_index < 0) {
> +            return;

return false, I guess?
This approach allows iterating in case of races
and QEMU does not hangs anymore at replay.

> +        }
> +    }
> +
>          if (cpu->exception_index >= EXCP_INTERRUPT) {
>              /* exit request from the cpu execution loop */
>              *ret = cpu->exception_index;
> @@ -505,16 +517,6 @@ static inline bool cpu_handle_exception(CPUState *cpu, int *ret)
>              }
>  #endif
>          }
> -#ifndef CONFIG_USER_ONLY
> -    } else if (replay_has_exception()
> -               && cpu->icount_decr.u16.low + cpu->icount_extra == 0) {
> -        /* try to cause an exception pending in the log */
> -        cpu_exec_nocache(cpu, 1, tb_find(cpu, NULL, 0, curr_cflags()), true);
> -        *ret = -1;
> -        return true;
> -#endif
> -    }
> -
>      return false;
>  }
> 


Pavel Dovgalyuk

Re: [Qemu-devel] [RFC PATCH 19/26] cpu-exec: reset exit flag before calling cpu_exec_nocache

[Paolo Bonzini]

On 10/11/2017 13:29, Pavel Dovgalyuk wrote:
>> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
>>>>>
>>>>> I tried this approach and it didn't work.
>>>>> I think iothread sets u16.high flag after resetting it in cpu_handle_interrupt.
>>>>
>>>> But why is this a problem?  The TB would exit immediately and go again
>>>> to cpu_handle_interrupt.  cpu_handle_interrupt returns true and
>>>> cpu_handle_exception causes the exception via cpu_exec_nocache.
>>>
>>> I've tested your variant more thoroughly.
>>> It seems, that iothread calls cpu_exec between atomic_set(&cpu->icount_decr.u16.high, 0);
>>> in cpu_handle_interrupt and cpu_exec_nocache in cpu_handle_exception.
>>> I see no other reason, because this happens not for the every time.
>>> And cpu_handle_interrupt is not called again, because cpu_handle_exception returns true.
>>> Therefore we have an infinite loop, because no other code here resets cpu-
>>> icount_decr.u16.high.
>>
>> Then returning true unconditionally is wrong in the cpu_exec_nocache
>> case.  What if you do:
>>
>> diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
>> index 61297f8f4a..fb5446be3e 100644
>> --- a/accel/tcg/cpu-exec.c
>> +++ b/accel/tcg/cpu-exec.c
>> @@ -470,7 +470,19 @@ static inline void cpu_handle_debug_exception(CPUState *cpu)
>>
>>  static inline bool cpu_handle_exception(CPUState *cpu, int *ret)
>>  {
>> -    if (cpu->exception_index >= 0) {
>> +    if (cpu->exception_index < 0) {
>> +#ifndef CONFIG_USER_ONLY
>> +        if (replay_has_exception()
>> +            && cpu->icount_decr.u16.low + cpu->icount_extra == 0) {
>> +            /* try to cause an exception pending in the log */
>> +            cpu_exec_nocache(cpu, 1, tb_find(cpu, NULL, 0, curr_cflags()), true);
>> +        }
>> +#endif
>> +        if (cpu->exception_index < 0) {
>> +            return;
> 
> return false, I guess?
> This approach allows iterating in case of races
> and QEMU does not hangs anymore at replay.

Great, can you put this change the next time you send your series?
There are some parts that can definitely go in for 2.11.

Thanks,

Paolo

>> +        }
>> +    }
>> +
>>          if (cpu->exception_index >= EXCP_INTERRUPT) {
>>              /* exit request from the cpu execution loop */
>>              *ret = cpu->exception_index;
>> @@ -505,16 +517,6 @@ static inline bool cpu_handle_exception(CPUState *cpu, int *ret)
>>              }
>>  #endif
>>          }
>> -#ifndef CONFIG_USER_ONLY
>> -    } else if (replay_has_exception()
>> -               && cpu->icount_decr.u16.low + cpu->icount_extra == 0) {
>> -        /* try to cause an exception pending in the log */
>> -        cpu_exec_nocache(cpu, 1, tb_find(cpu, NULL, 0, curr_cflags()), true);
>> -        *ret = -1;
>> -        return true;
>> -#endif
>> -    }
>> -
>>      return false;
>>  }
>>
> 
> 
> Pavel Dovgalyuk
> 

Re: [Qemu-devel] [RFC PATCH 13/26] cpus: only take BQL for sleeping threads

[Pavel Dovgalyuk]

> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
> > From: "David Hildenbrand" <david@redhat.com>
> > On 02.11.2017 12:08, Paolo Bonzini wrote:
> > > On 31/10/2017 12:26, Pavel Dovgalyuk wrote:
> > >> From: Alex Bennée <alex.bennee@linaro.org>
> > >>
> > >> Now the only real need to hold the BQL is for when we sleep on the
> > >> cpu->halt conditional. The lock is actually dropped while the thread
> > >> sleeps so the actual window for contention is pretty small. This also
> > >> means we can remove the special case hack for exclusive work and
> > >> simply declare that work no longer has an implicit BQL held. This
> > >> isn't a major problem async work is generally only changing things in
> > >> the context of its own vCPU. If it needs to work across vCPUs it
> > >> should be using the exclusive mechanism or possibly taking the lock
> > >> itself.
> > >>
> > >> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
> > >> Tested-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
> > >
> > > At least cpu_throttle_thread would fail with this patch.
> > >
> > > Also I am not sure if the s390 SIGP handlers are ready for this.
> > >
> >
> > We have a global lock to the SIGP "facility". However we need the BQL in
> > order to inject interrupts into CPUs (otherwise it would trigger an
> > assert when injecting).
> >
> > We inject Restart and Stop interrupts from run_on_cpu. This requires the
> > BQL. So Paolo should be right, this change would break s390x.
> 
> I had some patches to access interrupt_request with the atomic builtins.  If
> Pavel can first extract the other changes to the icount mechanism, I can
> update them.

What changes do you mean here?
I'm not sure that I understand clearly how threads interact with BQL.
These patches were authored by Alex and we'll have to get him into the discussion.

Pavel Dovgalyuk

Re: [Qemu-devel] [RFC PATCH 13/26] cpus: only take BQL for sleeping threads

[Alex Bennée]

Pavel Dovgalyuk <dovgaluk@ispras.ru> writes:

>> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
>> > From: "David Hildenbrand" <david@redhat.com>
>> > On 02.11.2017 12:08, Paolo Bonzini wrote:
>> > > On 31/10/2017 12:26, Pavel Dovgalyuk wrote:
>> > >> From: Alex Bennée <alex.bennee@linaro.org>
>> > >>
>> > >> Now the only real need to hold the BQL is for when we sleep on the
>> > >> cpu->halt conditional. The lock is actually dropped while the thread
>> > >> sleeps so the actual window for contention is pretty small. This also
>> > >> means we can remove the special case hack for exclusive work and
>> > >> simply declare that work no longer has an implicit BQL held. This
>> > >> isn't a major problem async work is generally only changing things in
>> > >> the context of its own vCPU. If it needs to work across vCPUs it
>> > >> should be using the exclusive mechanism or possibly taking the lock
>> > >> itself.
>> > >>
>> > >> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
>> > >> Tested-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
>> > >
>> > > At least cpu_throttle_thread would fail with this patch.
>> > >
>> > > Also I am not sure if the s390 SIGP handlers are ready for this.
>> > >
>> >
>> > We have a global lock to the SIGP "facility". However we need the BQL in
>> > order to inject interrupts into CPUs (otherwise it would trigger an
>> > assert when injecting).
>> >
>> > We inject Restart and Stop interrupts from run_on_cpu. This requires the
>> > BQL. So Paolo should be right, this change would break s390x.
>> 
>> I had some patches to access interrupt_request with the atomic builtins.  If
>> Pavel can first extract the other changes to the icount mechanism, I can
>> update them.
>
> What changes do you mean here?
> I'm not sure that I understand clearly how threads interact with BQL.
> These patches were authored by Alex and we'll have to get him into the
> discussion.

Do you want me to re-spin my sub-set of the patches as a new base?

-- 
Alex Bennée

Re: [Qemu-devel] [RFC PATCH 13/26] cpus: only take BQL for sleeping threads

[Paolo Bonzini]

On 13/11/2017 11:14, Alex Bennée wrote:
> 
> Pavel Dovgalyuk <dovgaluk@ispras.ru> writes:
> 
>>> From: Paolo Bonzini [mailto:pbonzini@redhat.com]
>>>> From: "David Hildenbrand" <david@redhat.com>
>>>> On 02.11.2017 12:08, Paolo Bonzini wrote:
>>>>> On 31/10/2017 12:26, Pavel Dovgalyuk wrote:
>>>>>> From: Alex Bennée <alex.bennee@linaro.org>
>>>>>>
>>>>>> Now the only real need to hold the BQL is for when we sleep on the
>>>>>> cpu->halt conditional. The lock is actually dropped while the thread
>>>>>> sleeps so the actual window for contention is pretty small. This also
>>>>>> means we can remove the special case hack for exclusive work and
>>>>>> simply declare that work no longer has an implicit BQL held. This
>>>>>> isn't a major problem async work is generally only changing things in
>>>>>> the context of its own vCPU. If it needs to work across vCPUs it
>>>>>> should be using the exclusive mechanism or possibly taking the lock
>>>>>> itself.
>>>>>>
>>>>>> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
>>>>>> Tested-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
>>>>>
>>>>> At least cpu_throttle_thread would fail with this patch.
>>>>>
>>>>> Also I am not sure if the s390 SIGP handlers are ready for this.
>>>>>
>>>>
>>>> We have a global lock to the SIGP "facility". However we need the BQL in
>>>> order to inject interrupts into CPUs (otherwise it would trigger an
>>>> assert when injecting).
>>>>
>>>> We inject Restart and Stop interrupts from run_on_cpu. This requires the
>>>> BQL. So Paolo should be right, this change would break s390x.
>>>
>>> I had some patches to access interrupt_request with the atomic builtins.  If
>>> Pavel can first extract the other changes to the icount mechanism, I can
>>> update them.
>>
>> What changes do you mean here?
>> I'm not sure that I understand clearly how threads interact with BQL.
>> These patches were authored by Alex and we'll have to get him into the
>> discussion.
> 
> Do you want me to re-spin my sub-set of the patches as a new base?

I think the first part to be merged is changes to cpu-exec.c and
friends.  These might even go into 2.11.

Paolo

[Qemu-devel] [RFC PATCH 19/26] cpu-exec: reset exit flag before calling cpu_exec_nocache

[Pavel Dovgalyuk]

This patch resets icount_decr.u32.high before calling cpu_exec_nocache
when exception is pending. Exception is caused by the first instruction
in the block and it cannot be executed without resetting the flag.

Signed-off-by: Maria Klimushenkova <maria.klimushenkova@ispras.ru>
Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>

---
 accel/tcg/cpu-exec.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c
index 35d0240..aaa9c2d 100644
--- a/accel/tcg/cpu-exec.c
+++ b/accel/tcg/cpu-exec.c
@@ -500,6 +500,7 @@ static inline bool cpu_handle_exception(CPUState *cpu, int *ret)
     } else if (replay_has_exception()
                && cpu->icount_decr.u16.low + cpu->icount_extra == 0) {
         /* try to cause an exception pending in the log */
+        atomic_set(&cpu->icount_decr.u16.high, 0);
         cpu_exec_nocache(cpu, 1, tb_find(cpu, NULL, 0, curr_cflags()), true);
         *ret = -1;
         return true;