[Qemu-devel] [PULL 0/5] Miscellaneous patches for 2018-10-10

[Qemu-devel] [PULL 0/5] Miscellaneous patches for 2018-10-10

[Markus Armbruster]

The following changes since commit 7c69b7c849641a39ba3defa40d384a2ba24cd7a2:

  Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20181008' into staging (2018-10-08 15:01:30 +0100)

are available in the Git repository at:

  git://repo.or.cz/qemu/armbru.git tags/pull-misc-2018-10-10

for you to fetch changes up to b266f1d1123396f9f5df865508f7555ab0c9582a:

  ivshmem: Fix unplug of device "ivshmem-plain" (2018-10-10 08:01:36 +0200)

----------------------------------------------------------------
Miscellaneous patches for 2018-10-10

* Fix ivshmem unplug (regressed in v2.7.0)
* Minor test suite and doc work

----------------------------------------------------------------
Kashyap Chamarthy (1):
      qapi/misc.json: Remove superfluous words in CpuModelExpansionType

Marc-André Lureau (1):
      tests/check-qjson: fix a leak

Markus Armbruster (3):
      tests: Restore check-qdict unit test
      libqtest: Inline g_assert_no_errno()
      ivshmem: Fix unplug of device "ivshmem-plain"

 hw/misc/ivshmem.c      | 14 +++++---------
 qapi/misc.json         | 12 ++++++------
 tests/Makefile.include |  2 +-
 tests/check-qdict.c    |  2 ++
 tests/check-qjson.c    |  1 +
 tests/libqtest.c       | 11 +++--------
 6 files changed, 18 insertions(+), 24 deletions(-)

-- 
2.17.1

[Qemu-devel] [PULL 1/5] tests/check-qjson: fix a leak

[Markus Armbruster]

From: Marc-André Lureau <marcandre.lureau@redhat.com>

Spotted by ASAN:
=================================================================
==11893==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 1120 byte(s) in 28 object(s) allocated from:
    #0 0x7fd0515b0c48 in malloc (/lib64/libasan.so.5+0xeec48)
    #1 0x7fd050ffa3c5 in g_malloc (/lib64/libglib-2.0.so.0+0x523c5)
    #2 0x559e708b56a4 in qstring_from_str /home/elmarco/src/qq/qobject/qstring.c:66
    #3 0x559e708b4fe0 in qstring_new /home/elmarco/src/qq/qobject/qstring.c:23
    #4 0x559e708bda7d in parse_string /home/elmarco/src/qq/qobject/json-parser.c:143
    #5 0x559e708c1009 in parse_literal /home/elmarco/src/qq/qobject/json-parser.c:484
    #6 0x559e708c1627 in parse_value /home/elmarco/src/qq/qobject/json-parser.c:547
    #7 0x559e708c1c67 in json_parser_parse /home/elmarco/src/qq/qobject/json-parser.c:573
    #8 0x559e708bc0ff in json_message_process_token /home/elmarco/src/qq/qobject/json-streamer.c:92
    #9 0x559e708d1655 in json_lexer_feed_char /home/elmarco/src/qq/qobject/json-lexer.c:292
    #10 0x559e708d1fe1 in json_lexer_feed /home/elmarco/src/qq/qobject/json-lexer.c:339
    #11 0x559e708bc856 in json_message_parser_feed /home/elmarco/src/qq/qobject/json-streamer.c:121
    #12 0x559e708b8b4b in qobject_from_jsonv /home/elmarco/src/qq/qobject/qjson.c:69
    #13 0x559e708b8d02 in qobject_from_json /home/elmarco/src/qq/qobject/qjson.c:83
    #14 0x559e708a74ae in from_json_str /home/elmarco/src/qq/tests/check-qjson.c:30
    #15 0x559e708a9f83 in utf8_string /home/elmarco/src/qq/tests/check-qjson.c:781
    #16 0x7fd05101bc49 in test_case_run gtestutils.c:2255
    #17 0x7fd05101bc49 in g_test_run_suite_internal gtestutils.c:2339

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20180901211917.10372-1-marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 tests/check-qjson.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/check-qjson.c b/tests/check-qjson.c
index cc13f3d41e..d876a7a96e 100644
--- a/tests/check-qjson.c
+++ b/tests/check-qjson.c
@@ -780,6 +780,7 @@ static void utf8_string(void)
             if (!strstr(json_out, "\\uFFFD")) {
                 str = from_json_str(json_out, j, &error_abort);
                 g_assert_cmpstr(qstring_get_try_str(str), ==, utf8_in);
+                qobject_unref(str);
             }
         }
     }
-- 
2.17.1

[Qemu-devel] [PULL 2/5] qapi/misc.json: Remove superfluous words in CpuModelExpansionType

[Markus Armbruster]

From: Kashyap Chamarthy <kchamart@redhat.com>

Remove repetition of 'independent of'.  While at it, s/QMU/QEMU in
@CpuDefinitionInfo.

Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
Message-Id: <20181003104605.8477-1-kchamart@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
[Commit message updated as requested by Kashyap]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 qapi/misc.json | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/qapi/misc.json b/qapi/misc.json
index ada9af5add..f98de3a58c 100644
--- a/qapi/misc.json
+++ b/qapi/misc.json
@@ -2017,7 +2017,7 @@
 #
 # @migration-safe: whether a CPU definition can be safely used for
 #                  migration in combination with a QEMU compatibility machine
-#                  when migrating between different QMU versions and between
+#                  when migrating between different QEMU versions and between
 #                  hosts with different sets of (hardware or software)
 #                  capabilities. If not provided, information is not available
 #                  and callers should not assume the CPU definition to be
@@ -2126,11 +2126,11 @@
 # @static: Expand to a static CPU model, a combination of a static base
 #          model name and property delta changes. As the static base model will
 #          never change, the expanded CPU model will be the same, independent of
-#          independent of QEMU version, machine type, machine options, and
-#          accelerator options. Therefore, the resulting model can be used by
-#          tooling without having to specify a compatibility machine - e.g. when
-#          displaying the "host" model. static CPU models are migration-safe.
-#
+#          QEMU version, machine type, machine options, and accelerator options.
+#          Therefore, the resulting model can be used by tooling without having
+#          to specify a compatibility machine - e.g. when displaying the "host"
+#          model. The @static CPU models are migration-safe.
+
 # @full: Expand all properties. The produced model is not guaranteed to be
 #        migration-safe, but allows tooling to get an insight and work with
 #        model details.
-- 
2.17.1

[Qemu-devel] [PULL 3/5] tests: Restore check-qdict unit test

[Markus Armbruster]

Commit 0bcc8e5bd8d accidentally dropped check-qdict from the list of
unit tests (again, see commit 4429532b48a).  Put it back, and fix up
the test.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20180926122309.30631-1-armbru@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 tests/Makefile.include | 2 +-
 tests/check-qdict.c    | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/tests/Makefile.include b/tests/Makefile.include
index 7a3059bf6c..8264af64a8 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -40,7 +40,7 @@ SYSEMU_TARGET_LIST := $(subst -softmmu.mak,,$(notdir \
 
 check-unit-y = tests/check-qdict$(EXESUF)
 gcov-files-check-qdict-y = qobject/qdict.c
-check-unit-y = tests/check-block-qdict$(EXESUF)
+check-unit-y += tests/check-block-qdict$(EXESUF)
 gcov-files-check-block-qdict-y = qobject/block-qdict.c
 check-unit-y += tests/test-char$(EXESUF)
 gcov-files-check-qdict-y = chardev/char.c
diff --git a/tests/check-qdict.c b/tests/check-qdict.c
index 86e9fe7dc4..a1e8305066 100644
--- a/tests/check-qdict.c
+++ b/tests/check-qdict.c
@@ -12,6 +12,8 @@
 
 #include "qemu/osdep.h"
 #include "qapi/qmp/qdict.h"
+#include "qapi/qmp/qnum.h"
+#include "qapi/qmp/qstring.h"
 
 /*
  * Public Interface test-cases
-- 
2.17.1

[Qemu-devel] [PULL 4/5] libqtest: Inline g_assert_no_errno()

[Markus Armbruster]

Macro g_assert_no_errno() intrudes into GLib's namespace.  It's also
pretty pointless.  Inline.

At one call site, its redundancy is now obvious.  Delete it there.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20180926122933.3858-1-armbru@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
---
 tests/libqtest.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/tests/libqtest.c b/tests/libqtest.c
index 2cd5736642..44ce118cfc 100644
--- a/tests/libqtest.c
+++ b/tests/libqtest.c
@@ -48,10 +48,6 @@ struct QTestState
 static GHookList abrt_hooks;
 static struct sigaction sigact_old;
 
-#define g_assert_no_errno(ret) do { \
-    g_assert_cmpint(ret, !=, -1); \
-} while (0)
-
 static int qtest_query_target_endianness(QTestState *s);
 
 static int init_socket(const char *socket_path)
@@ -61,7 +57,7 @@ static int init_socket(const char *socket_path)
     int ret;
 
     sock = socket(PF_UNIX, SOCK_STREAM, 0);
-    g_assert_no_errno(sock);
+    g_assert_cmpint(sock, !=, -1);
 
     addr.sun_family = AF_UNIX;
     snprintf(addr.sun_path, sizeof(addr.sun_path), "%s", socket_path);
@@ -70,9 +66,9 @@ static int init_socket(const char *socket_path)
     do {
         ret = bind(sock, (struct sockaddr *)&addr, sizeof(addr));
     } while (ret == -1 && errno == EINTR);
-    g_assert_no_errno(ret);
+    g_assert_cmpint(ret, !=, -1);
     ret = listen(sock, 1);
-    g_assert_no_errno(ret);
+    g_assert_cmpint(ret, !=, -1);
 
     return sock;
 }
@@ -325,7 +321,6 @@ static void socket_send(int fd, const char *buf, size_t size)
             continue;
         }
 
-        g_assert_no_errno(len);
         g_assert_cmpint(len, >, 0);
 
         offset += len;
-- 
2.17.1

[Qemu-devel] [PULL 5/5] ivshmem: Fix unplug of device "ivshmem-plain"

[Markus Armbruster]

Commit 2aece63c8a "hostmem: detect host backend memory is being used
properly" fixed "ivshmem-plain" to reject memory backends that are
already in use, and to block their deletion while in use.  Two bugs
escaped review:

* New ivshmem_plain_exit() fails to call ivshmem_exit().  This breaks
  unplug.  Reproducer: migration after unplug still fails with
  "Migration is disabled when using feature 'peer mode' in device
  'ivshmem'".

* It failed to update legacy "ivshmem".  Harmless, because it creates
  the memory backend itself, and nothing else should use it.

Fix by moving the two host_memory_backend_set_mapped() calls into
ivshmem_common_realize() and ivshmem_exit(), guarded by s->hostmem.

Fixes: 2aece63c8a9d2c3a8ff41d2febc4cdeff2633331
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20180926163709.22876-1-armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/misc/ivshmem.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c
index 6febbabcaa..8cb17b9dd4 100644
--- a/hw/misc/ivshmem.c
+++ b/hw/misc/ivshmem.c
@@ -911,6 +911,7 @@ static void ivshmem_common_realize(PCIDevice *dev, Error **errp)
         IVSHMEM_DPRINTF("using hostmem\n");
 
         s->ivshmem_bar2 = host_memory_backend_get_memory(s->hostmem);
+        host_memory_backend_set_mapped(s->hostmem, true);
     } else {
         Chardev *chr = qemu_chr_fe_get_driver(&s->server_chr);
         assert(chr);
@@ -993,6 +994,10 @@ static void ivshmem_exit(PCIDevice *dev)
         vmstate_unregister_ram(s->ivshmem_bar2, DEVICE(dev));
     }
 
+    if (s->hostmem) {
+        host_memory_backend_set_mapped(s->hostmem, false);
+    }
+
     if (s->peers) {
         for (i = 0; i < s->nb_peers; i++) {
             close_peer_eventfds(s, i);
@@ -1101,14 +1106,6 @@ static void ivshmem_plain_realize(PCIDevice *dev, Error **errp)
     }
 
     ivshmem_common_realize(dev, errp);
-    host_memory_backend_set_mapped(s->hostmem, true);
-}
-
-static void ivshmem_plain_exit(PCIDevice *pci_dev)
-{
-    IVShmemState *s = IVSHMEM_COMMON(pci_dev);
-
-    host_memory_backend_set_mapped(s->hostmem, false);
 }
 
 static void ivshmem_plain_class_init(ObjectClass *klass, void *data)
@@ -1117,7 +1114,6 @@ static void ivshmem_plain_class_init(ObjectClass *klass, void *data)
     PCIDeviceClass *k = PCI_DEVICE_CLASS(klass);
 
     k->realize = ivshmem_plain_realize;
-    k->exit = ivshmem_plain_exit;
     dc->props = ivshmem_plain_properties;
     dc->vmsd = &ivshmem_plain_vmsd;
 }
-- 
2.17.1

Re: [Qemu-devel] [PULL 3/5] tests: Restore check-qdict unit test

[Eric Blake]

On 10/10/18 1:11 AM, Markus Armbruster wrote:
> Commit 0bcc8e5bd8d accidentally dropped check-qdict from the list of
> unit tests (again, see commit 4429532b48a).  Put it back, and fix up
> the test.

Since this seems to be a recurring problem...

> +++ b/tests/Makefile.include
> @@ -40,7 +40,7 @@ SYSEMU_TARGET_LIST := $(subst -softmmu.mak,,$(notdir \
>   
>   check-unit-y = tests/check-qdict$(EXESUF)

How about a followup patch that does:

-   check-unit-y = tests/check-qdict$(EXESUF)
+   check-unit-y =
+   check-unit-y += tests/check-qdict$(EXESUF)


-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

Re: [Qemu-devel] [PULL 3/5] tests: Restore check-qdict unit test

[Philippe Mathieu-Daudé]

On 10/10/2018 18:43, Eric Blake wrote:
> On 10/10/18 1:11 AM, Markus Armbruster wrote:
>> Commit 0bcc8e5bd8d accidentally dropped check-qdict from the list of
>> unit tests (again, see commit 4429532b48a).  Put it back, and fix up
>> the test.
> 
> Since this seems to be a recurring problem...
> 
>> +++ b/tests/Makefile.include
>> @@ -40,7 +40,7 @@ SYSEMU_TARGET_LIST := $(subst -softmmu.mak,,$(notdir \
>>     check-unit-y = tests/check-qdict$(EXESUF)
> 
> How about a followup patch that does:
> 
> -   check-unit-y = tests/check-qdict$(EXESUF)
> +   check-unit-y =
> +   check-unit-y += tests/check-qdict$(EXESUF)
> 

Yes, clever :)

Re: [Qemu-devel] [PULL 0/5] Miscellaneous patches for 2018-10-10

[Peter Maydell]

On 10 October 2018 at 07:11, Markus Armbruster <armbru@redhat.com> wrote:
> The following changes since commit 7c69b7c849641a39ba3defa40d384a2ba24cd7a2:
>
>   Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20181008' into staging (2018-10-08 15:01:30 +0100)
>
> are available in the Git repository at:
>
>   git://repo.or.cz/qemu/armbru.git tags/pull-misc-2018-10-10
>
> for you to fetch changes up to b266f1d1123396f9f5df865508f7555ab0c9582a:
>
>   ivshmem: Fix unplug of device "ivshmem-plain" (2018-10-10 08:01:36 +0200)
>
> ----------------------------------------------------------------
> Miscellaneous patches for 2018-10-10
>
> * Fix ivshmem unplug (regressed in v2.7.0)
> * Minor test suite and doc work
>

Applied, thanks.

-- PMM