[Qemu-devel] [PATCH v1 0/3] ppc: adding some RTAS calls in tests/libqos

[Qemu-devel] [PATCH v1 0/3] ppc: adding some RTAS calls in tests/libqos

[Daniel Henrique Barboza]

This series implements a few RTAS hypercalls in tests/libqos
that, used together, implement the DRC state transition described
in PAPR 2.7+, 13.4.

This started as an attempt of implementing hot unplug qtests for the
sPAPR machine but I've found a few issues that will require more time
solving:

- CPU hot unplug: for some reason the machine freezes after the
callback is returned.

- LMB hot unplug: not supported by the sPAPR machine if not
set in CAS.

I have a feeling that the CPU hot unplug  issue might be related
with the lack of CAS negotiation step as well, but only way to be
sure is to further understanding how the CAS negotation interfere
with the device hot unplug. If needed we'll have to implement the
client architecture support hypercall as well in the future.

Until then, I believe these hypercalls have a value of their own and
are worth being pushed upstream.


Daniel Henrique Barboza (3):
  tests: adding 'check_exception' RTAS implementation
  tests: adding 'set_indicator' RTAS call
  tests: ibm,configure-connector RTAS call implementation

 tests/libqos/rtas.c | 105 +++++++++++++++++++++++++
 tests/libqos/rtas.h |   5 ++
 tests/rtas-test.c   | 218 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 328 insertions(+)

-- 
2.13.6

[Qemu-devel] [PATCH v1 1/3] tests: adding 'check_exception' RTAS implementation

[Daniel Henrique Barboza]

In the sPAPR guest, events such as device hotplug/unplug are
retrieved by the check_exception RTAS call after the guest
receives an IRQ pulse. For both hotplug and unplug operations,
guest intervention is required to transit the DRC state of
the attached device to the configured state.

Without guest intervention, we are still able of qtesting hotplug
devices in the same manner that we support device hotplug in
early (pre-CAS) stages.

Unfortunately, hot unplugs qtests relies on callbacks that demands
guest intervention to complete - otherwise we risk leaving the guest
in an inconsistent state that might impact other hotplug/unplug
operations later on. If we want to make hot unplug qtests we'll
need to simulate the guest behavior in the scenario in which a
hot unplug is received, allowing the hot unplug process to go
as intended.

This patch is the first step towards hot unplug qtests in sPAPR,
implementing the check_exception RTAS hypercall in libqos. This
hypercall is used to fetch events such as hotplug/hot unplug from
the sPAPR machine after the guest receives an IRQ pulse (or,
in the case of the test implemented here, we simply know when
there is/isn't an event to be retrieved).

Signed-off-by: Daniel Henrique Barboza <danielhb@linux.vnet.ibm.com>
---
 tests/libqos/rtas.c | 37 +++++++++++++++++++++++++
 tests/libqos/rtas.h |  2 ++
 tests/rtas-test.c   | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 116 insertions(+)

diff --git a/tests/libqos/rtas.c b/tests/libqos/rtas.c
index 0269803ce0..fdeab448f7 100644
--- a/tests/libqos/rtas.c
+++ b/tests/libqos/rtas.c
@@ -114,3 +114,40 @@ int qrtas_ibm_write_pci_config(QGuestAllocator *alloc, uint64_t buid,
 
     return 0;
 }
+
+/*
+ * check_exception as defined by PAPR 2.7+, 7.3.3.2
+ *
+ * nargs = 7 (with Extended Information)
+ * nrets = 1
+ *
+ * arg[2] = mask of event classes to process
+ * arg[4] = real address of error log
+ * arg[5] = length of error log
+ *
+ * arg[0] (Vector Offset), arg[1] and arg[6] (Additional information)
+ * and arg[3] (Critical) aren't used in the logic of check_exception
+ * in hw/ppc/spapr_events.c and can be ignored.
+ *
+ * If there is an event that matches the given mask, check-exception writes
+ * it in buf_addr up to a max of buf_len bytes.
+ *
+ */
+int qrtas_check_exception(QGuestAllocator *alloc, uint32_t mask,
+                          uint32_t buf_addr, uint32_t buf_len)
+{
+    uint32_t args[7], ret[1];
+    int res;
+
+    args[0] = args[1] = args[3] = args[6] = 0;
+    args[2] = mask;
+    args[4] = buf_addr;
+    args[5] = buf_len;
+
+    res = qrtas_call(alloc, "check-exception", 7, args, 1, ret);
+    if (res != 0) {
+        return -1;
+    }
+
+    return ret[0];
+}
diff --git a/tests/libqos/rtas.h b/tests/libqos/rtas.h
index 498eb19230..330ecfd397 100644
--- a/tests/libqos/rtas.h
+++ b/tests/libqos/rtas.h
@@ -12,4 +12,6 @@ uint32_t qrtas_ibm_read_pci_config(QGuestAllocator *alloc, uint64_t buid,
                                    uint32_t addr, uint32_t size);
 int qrtas_ibm_write_pci_config(QGuestAllocator *alloc, uint64_t buid,
                                uint32_t addr, uint32_t size, uint32_t val);
+int qrtas_check_exception(QGuestAllocator *alloc, uint32_t mask,
+                          uint32_t buf_addr, uint32_t buf_len);
 #endif /* LIBQOS_RTAS_H */
diff --git a/tests/rtas-test.c b/tests/rtas-test.c
index 276c87ef84..c5a6080043 100644
--- a/tests/rtas-test.c
+++ b/tests/rtas-test.c
@@ -5,6 +5,9 @@
 #include "libqos/libqos-spapr.h"
 #include "libqos/rtas.h"
 
+#define EVENT_MASK_EPOW (1 << 30)
+#define EVENT_LOG_LEN 2048
+
 static void test_rtas_get_time_of_day(void)
 {
     QOSState *qs;
@@ -24,6 +27,76 @@ static void test_rtas_get_time_of_day(void)
     qtest_shutdown(qs);
 }
 
+static void test_rtas_check_exception_no_events(void)
+{
+    QOSState *qs;
+    uint64_t ret;
+    uintptr_t guest_buf_addr;
+    uint8_t *buf = g_malloc0(EVENT_LOG_LEN);
+
+    qs = qtest_spapr_boot("-machine pseries");
+    guest_buf_addr = guest_alloc(qs->alloc, EVENT_LOG_LEN * sizeof(uint8_t));
+
+    /*
+     * mask = 0 should return no events, returning
+     * RTAS_OUT_NO_ERRORS_FOUND (1).
+     */
+    ret = qrtas_check_exception(qs->alloc, 0, guest_buf_addr, EVENT_LOG_LEN);
+    g_assert_cmpint(ret, ==, 1);
+
+    /*
+     * Using a proper event mask should also return
+     * no events since no hotplugs happened.
+     */
+    ret = qrtas_check_exception(qs->alloc, EVENT_MASK_EPOW, guest_buf_addr,
+                                EVENT_LOG_LEN);
+    g_assert_cmpint(ret, ==, 1);
+
+    guest_free(qs->alloc, guest_buf_addr);
+    g_free(buf);
+
+    qtest_shutdown(qs);
+}
+
+static void test_rtas_check_exception_hotplug_event(void)
+{
+    QOSState *qs;
+    uint64_t ret;
+    uintptr_t guest_buf_addr;
+    uint8_t *buf = g_malloc0(EVENT_LOG_LEN);
+    uint8_t *zero_buf = g_malloc0(EVENT_LOG_LEN);
+
+    qs = qtest_spapr_boot("-machine pseries -cpu POWER8_v2.0 "
+                          "-smp 1,sockets=4,cores=1,threads=1,maxcpus=4");
+
+    guest_buf_addr = guest_alloc(qs->alloc, EVENT_LOG_LEN * sizeof(uint8_t));
+
+    qtest_qmp_device_add("power8_v2.0-spapr-cpu-core", "id-1",
+                         "'core-id':'1'");
+    /*
+     * We use EPOW mask instead of HOTPLUG because the code defaults
+     * the hotplug interrupt source to EPOW if the guest didn't change
+     * OV5_HP_EVT during CAS.
+     */
+    ret = qrtas_check_exception(qs->alloc, EVENT_MASK_EPOW,
+                                guest_buf_addr, EVENT_LOG_LEN);
+
+    memread(guest_buf_addr, buf, EVENT_LOG_LEN);
+    guest_free(qs->alloc, guest_buf_addr);
+
+    /*
+     * Calling check_exception after a hotplug needs to return
+     * RTAS_OUT_SUCCESS (0) and a non-zero error_log.
+     */
+    g_assert_cmpint(ret, ==, 0);
+    g_assert(memcmp(buf, zero_buf, EVENT_LOG_LEN) != 0);
+
+    g_free(buf);
+    g_free(zero_buf);
+
+    qtest_shutdown(qs);
+}
+
 int main(int argc, char *argv[])
 {
     const char *arch = qtest_get_arch();
@@ -35,6 +108,10 @@ int main(int argc, char *argv[])
         exit(EXIT_FAILURE);
     }
     qtest_add_func("rtas/get-time-of-day", test_rtas_get_time_of_day);
+    qtest_add_func("rtas/rtas-check-exception-no-events",
+                   test_rtas_check_exception_no_events);
+    qtest_add_func("rtas/rtas-check-exception-hotplug-event",
+                   test_rtas_check_exception_hotplug_event);
 
     return g_test_run();
 }
-- 
2.13.6

[Qemu-devel] [PATCH v1 2/3] tests: adding 'set_indicator' RTAS call

[Daniel Henrique Barboza]

'set_indicator' is a RTAS hypercall that is used to change
the state of both physical and logical devices DRCs by setting
allocation-state, isolation-state and dr-indicator.

This patch implements the set_indicator RTAS call in
tests/libqos/rtas.c, adding its test in tests/rtas-test.c.

Signed-off-by: Daniel Henrique Barboza <danielhb@linux.vnet.ibm.com>
---
 tests/libqos/rtas.c | 33 ++++++++++++++++++++++++
 tests/libqos/rtas.h |  2 ++
 tests/rtas-test.c   | 73 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 108 insertions(+)

diff --git a/tests/libqos/rtas.c b/tests/libqos/rtas.c
index fdeab448f7..ade572a84f 100644
--- a/tests/libqos/rtas.c
+++ b/tests/libqos/rtas.c
@@ -151,3 +151,36 @@ int qrtas_check_exception(QGuestAllocator *alloc, uint32_t mask,
 
     return ret[0];
 }
+
+/*
+ * set_indicator as defined by PAPR 2.7+, 7.3.5.4
+ *
+ * nargs = 3
+ * nrets = 1
+ *
+ * arg[0] = the type of the indicator
+ * arg[1] = index of the specific indicator
+ * arg[2] = desired new state
+ *
+ * Depending on the input, set_indicator will call set_isolation_state,
+ * set_allocation_state or set_dr_indicator in hw/ppc/spapr_drc.c.
+ * These functions allows the guest to control the state of hotplugged
+ * and hot unplugged devices.
+ */
+int qrtas_set_indicator(QGuestAllocator *alloc, uint32_t type, uint32_t idx,
+                        uint32_t new_state)
+{
+    uint32_t args[3], ret[1];
+    int res;
+
+    args[0] = type;
+    args[1] = idx;
+    args[2] = new_state;
+
+    res = qrtas_call(alloc, "set-indicator", 3, args, 1, ret);
+    if (res != 0) {
+        return -1;
+    }
+
+    return ret[0];
+}
diff --git a/tests/libqos/rtas.h b/tests/libqos/rtas.h
index 330ecfd397..9dfa18f32b 100644
--- a/tests/libqos/rtas.h
+++ b/tests/libqos/rtas.h
@@ -14,4 +14,6 @@ int qrtas_ibm_write_pci_config(QGuestAllocator *alloc, uint64_t buid,
                                uint32_t addr, uint32_t size, uint32_t val);
 int qrtas_check_exception(QGuestAllocator *alloc, uint32_t mask,
                           uint32_t buf_addr, uint32_t buf_len);
+int qrtas_set_indicator(QGuestAllocator *alloc, uint32_t type, uint32_t idx,
+                        uint32_t new_state);
 #endif /* LIBQOS_RTAS_H */
diff --git a/tests/rtas-test.c b/tests/rtas-test.c
index c5a6080043..2c34b6e83c 100644
--- a/tests/rtas-test.c
+++ b/tests/rtas-test.c
@@ -8,6 +8,13 @@
 #define EVENT_MASK_EPOW (1 << 30)
 #define EVENT_LOG_LEN 2048
 
+#define RTAS_SENSOR_TYPE_ISOLATION_STATE 9001
+#define RTAS_SENSOR_TYPE_ALLOCATION_STATE 9003
+#define SPAPR_DR_ISOLATION_STATE_ISOLATED 0
+#define SPAPR_DR_ALLOCATION_STATE_UNUSABLE 0
+#define SPAPR_DR_ALLOCATION_STATE_USABLE  1
+#define SPAPR_DR_ISOLATION_STATE_UNISOLATED 1
+
 static void test_rtas_get_time_of_day(void)
 {
     QOSState *qs;
@@ -97,6 +104,71 @@ static void test_rtas_check_exception_hotplug_event(void)
     qtest_shutdown(qs);
 }
 
+/*
+ * To test the 'set-indicator' RTAS call we will hotplug a device
+ * (in this case a CPU) and then make its DRC state go from
+ * the starting state UNUSABLE(1) to UNISOLATE(3). These DRC
+ * states transitions are described in further detail in
+ * PAPR 2.7+ 13.4.
+ */
+static void test_rtas_set_indicator(void)
+{
+    QOSState *qs;
+    uint64_t ret;
+    uintptr_t guest_buf_addr;
+    uint32_t drc_index;
+    uint8_t *buf = g_malloc0(EVENT_LOG_LEN);
+
+    qs = qtest_spapr_boot("-machine pseries -cpu POWER8_v2.0 "
+                          "-smp 1,sockets=4,cores=1,threads=1,maxcpus=4");
+
+    guest_buf_addr = guest_alloc(qs->alloc, EVENT_LOG_LEN * sizeof(uint8_t));
+    qtest_qmp_device_add("power8_v2.0-spapr-cpu-core", "id-1",
+                         "'core-id':'1'");
+
+    ret = qrtas_check_exception(qs->alloc, EVENT_MASK_EPOW,
+                                guest_buf_addr, EVENT_LOG_LEN);
+
+    memread(guest_buf_addr, buf, EVENT_LOG_LEN);
+    guest_free(qs->alloc, guest_buf_addr);
+
+    g_assert_cmpint(ret, ==, 0);
+
+    /*
+     * This time we can't ignore the event log written in the
+     * check_exception call - we need the DRC index of the
+     * recently added CPU to make the state changes using set_indicator.
+     *
+     * A bit of magic to go straight to the DRC index by checking the
+     * error log format in hw/ppc/spapr_events.c:
+     *
+     * - rtas_error_log size = 8 bytes
+     * - all other structures until the hotplug event log = 88 bytes
+     * - inside the hotplug event log, skip 8 + 4 bytes to get to
+     *   the drc_id union.
+     *
+     * This gives us a 108 bytes skip to get the drc info, which is
+     * written in be32.
+     */
+    drc_index = be32toh(*((uint32_t *)(buf + 108)));
+    g_free(buf);
+
+    /*
+     * According to the DRC state diagram, the guest first sets a device
+     * to USABLE (2), then UNISOLATED (3). Both should return
+     * RTAS_OUT_SUCCESS(0).
+     */
+    ret = qrtas_set_indicator(qs->alloc, RTAS_SENSOR_TYPE_ALLOCATION_STATE,
+                              drc_index, SPAPR_DR_ALLOCATION_STATE_USABLE);
+    g_assert_cmpint(ret, ==, 0);
+
+    ret = qrtas_set_indicator(qs->alloc, RTAS_SENSOR_TYPE_ISOLATION_STATE,
+                              drc_index, SPAPR_DR_ISOLATION_STATE_UNISOLATED);
+    g_assert_cmpint(ret, ==, 0);
+
+    qtest_shutdown(qs);
+}
+
 int main(int argc, char *argv[])
 {
     const char *arch = qtest_get_arch();
@@ -112,6 +184,7 @@ int main(int argc, char *argv[])
                    test_rtas_check_exception_no_events);
     qtest_add_func("rtas/rtas-check-exception-hotplug-event",
                    test_rtas_check_exception_hotplug_event);
+    qtest_add_func("rtas/test_rtas_set_indicator", test_rtas_set_indicator);
 
     return g_test_run();
 }
-- 
2.13.6

[Qemu-devel] [PATCH v1 3/3] tests: ibm, configure-connector RTAS call implementation

[Daniel Henrique Barboza]

'ibm,configure-connector' hypercall is used by the guest OS
to start the configuration of a given device, where the
machine configures the said device and all its sub-devices,
giving back FDTs to the caller for each sub-device.

This hypercall is supposed to be called multiple times by the
guest OS until it returns RTAS_OUT_SUCESS (code 0), indicating
that the device is now properly configured and ready
to be used, or a return value < 0 when an error occurs.

This patch implements the 'ibm,configure-connector' RTAS
hypercall in tests/libqos/rtas.c, with an extra test
case for it inside tests/rtas-tests.c.

Signed-off-by: Daniel Henrique Barboza <danielhb@linux.vnet.ibm.com>
---
 tests/libqos/rtas.c | 35 +++++++++++++++++++++++++++
 tests/libqos/rtas.h |  1 +
 tests/rtas-test.c   | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 104 insertions(+)

diff --git a/tests/libqos/rtas.c b/tests/libqos/rtas.c
index ade572a84f..1cb9e2b495 100644
--- a/tests/libqos/rtas.c
+++ b/tests/libqos/rtas.c
@@ -184,3 +184,38 @@ int qrtas_set_indicator(QGuestAllocator *alloc, uint32_t type, uint32_t idx,
 
     return ret[0];
 }
+
+/*
+ * ibm,configure-connector as defined by PAPR 2.7+, 13.5.3.5
+ *
+ * nargs = 2
+ * nrets = 1
+ *
+ * args[0] and args[1] compose the 64 bit Work Area address.
+ *
+ * This call will configure not only the device reported in the first
+ * offset of the Work Area but all of its siblingis as well, returning
+ * the FDT of each configured sub-device as well as a return code
+ * 'Next child', 'Next property' or 'Previous parent'. When the whole
+ * configuration is done, 'Configuration completed' (0) is returned.
+ *
+ * configure-connector will always reply with status code 'Next child'(2)
+ * on the first successful call. The DRC configuration will be
+ * completed when configure-connector returns status 0. Any return
+ * status < 0 indicates an error.
+ */
+int qrtas_ibm_configure_connector(QGuestAllocator *alloc, uintptr_t wa_addr)
+{
+    uint32_t args[2], ret[1];
+    int res;
+
+    args[0] = (uint32_t)(wa_addr);
+    args[1] = (uint32_t)(wa_addr >> 32);
+
+    res = qrtas_call(alloc, "ibm,configure-connector", 2, args, 1, ret);
+    if (res != 0) {
+        return -1;
+    }
+
+    return ret[0];
+}
diff --git a/tests/libqos/rtas.h b/tests/libqos/rtas.h
index 9dfa18f32b..35c44fb967 100644
--- a/tests/libqos/rtas.h
+++ b/tests/libqos/rtas.h
@@ -16,4 +16,5 @@ int qrtas_check_exception(QGuestAllocator *alloc, uint32_t mask,
                           uint32_t buf_addr, uint32_t buf_len);
 int qrtas_set_indicator(QGuestAllocator *alloc, uint32_t type, uint32_t idx,
                         uint32_t new_state);
+int qrtas_ibm_configure_connector(QGuestAllocator *alloc, uintptr_t wa_addr);
 #endif /* LIBQOS_RTAS_H */
diff --git a/tests/rtas-test.c b/tests/rtas-test.c
index 2c34b6e83c..b3538bf878 100644
--- a/tests/rtas-test.c
+++ b/tests/rtas-test.c
@@ -15,6 +15,8 @@
 #define SPAPR_DR_ALLOCATION_STATE_USABLE  1
 #define SPAPR_DR_ISOLATION_STATE_UNISOLATED 1
 
+#define CC_WA_LEN 4096
+
 static void test_rtas_get_time_of_day(void)
 {
     QOSState *qs;
@@ -169,6 +171,70 @@ static void test_rtas_set_indicator(void)
     qtest_shutdown(qs);
 }
 
+static void test_rtas_ibm_configure_connector(void)
+{
+    QOSState *qs;
+    uint64_t ret;
+    uintptr_t guest_buf_addr, guest_drc_addr;
+    uint32_t drc_index;
+    uint8_t *buf = g_malloc0(EVENT_LOG_LEN);
+
+    qs = qtest_spapr_boot("-machine pseries -cpu POWER8_v2.0 "
+                          "-smp 1,sockets=4,cores=1,threads=1,maxcpus=4");
+
+    guest_buf_addr = guest_alloc(qs->alloc, EVENT_LOG_LEN * sizeof(uint8_t));
+    qtest_qmp_device_add("power8_v2.0-spapr-cpu-core", "id-1",
+                         "'core-id':'1'");
+
+    ret = qrtas_check_exception(qs->alloc, EVENT_MASK_EPOW,
+                                guest_buf_addr, EVENT_LOG_LEN);
+
+    memread(guest_buf_addr, buf, EVENT_LOG_LEN);
+    guest_free(qs->alloc, guest_buf_addr);
+
+    g_assert_cmpint(ret, ==, 0);
+
+    /*
+     * Same 108 bytes offset magic used and explained in
+     * test_rtas_set_indicator.
+     */
+    drc_index = be32toh(*((uint32_t *)(buf + 108)));
+    g_free(buf);
+
+    ret = qrtas_set_indicator(qs->alloc, RTAS_SENSOR_TYPE_ALLOCATION_STATE,
+                              drc_index, SPAPR_DR_ALLOCATION_STATE_USABLE);
+    g_assert_cmpint(ret, ==, 0);
+
+    ret = qrtas_set_indicator(qs->alloc, RTAS_SENSOR_TYPE_ISOLATION_STATE,
+                              drc_index, SPAPR_DR_ISOLATION_STATE_UNISOLATED);
+    g_assert_cmpint(ret, ==, 0);
+
+    /*
+     * Call ibm,configure-connector to finish the hotplugged device
+     * configuration, putting its DRC into 'ready' state.
+     *
+     * We're not interested in the generated FDTs during the config
+     * process, thus we simply keep calling configure-connector
+     * until it returns SUCCESS(0) or an error.
+     *
+     * The full explanation logic behind this process can be found
+     * at PAPR 2.7+, 13.5.3.5.
+     */
+    guest_drc_addr = guest_alloc(qs->alloc, CC_WA_LEN * sizeof(uint32_t));
+    writel(guest_drc_addr, drc_index);
+    writel(guest_drc_addr + sizeof(uint32_t), 0);
+
+    do {
+        ret = qrtas_ibm_configure_connector(qs->alloc, guest_drc_addr);
+    } while (ret > 0);
+
+    guest_free(qs->alloc, guest_drc_addr);
+
+    g_assert_cmpint(ret, ==, 0);
+
+    qtest_shutdown(qs);
+}
+
 int main(int argc, char *argv[])
 {
     const char *arch = qtest_get_arch();
@@ -185,6 +251,8 @@ int main(int argc, char *argv[])
     qtest_add_func("rtas/rtas-check-exception-hotplug-event",
                    test_rtas_check_exception_hotplug_event);
     qtest_add_func("rtas/test_rtas_set_indicator", test_rtas_set_indicator);
+    qtest_add_func("rtas/test_rtas_ibm_configure_connector",
+                   test_rtas_ibm_configure_connector);
 
     return g_test_run();
 }
-- 
2.13.6

Re: [Qemu-devel] [PATCH v1 0/3] ppc: adding some RTAS calls in tests/libqos

[David Gibson]

[-- Attachment #1: Type: text/plain, Size: 1707 bytes --]

On Thu, Oct 26, 2017 at 06:22:47PM -0200, Daniel Henrique Barboza wrote:
> This series implements a few RTAS hypercalls in tests/libqos
> that, used together, implement the DRC state transition described
> in PAPR 2.7+, 13.4.
> 
> This started as an attempt of implementing hot unplug qtests for the
> sPAPR machine but I've found a few issues that will require more time
> solving:
> 
> - CPU hot unplug: for some reason the machine freezes after the
> callback is returned.
> 
> - LMB hot unplug: not supported by the sPAPR machine if not
> set in CAS.
> 
> I have a feeling that the CPU hot unplug  issue might be related
> with the lack of CAS negotiation step as well, but only way to be
> sure is to further understanding how the CAS negotation interfere
> with the device hot unplug. If needed we'll have to implement the
> client architecture support hypercall as well in the future.
> 
> Until then, I believe these hypercalls have a value of their own and
> are worth being pushed upstream.

Unfortunately, these changes break the Travis build on MacOS.
> 
> 
> Daniel Henrique Barboza (3):
>   tests: adding 'check_exception' RTAS implementation
>   tests: adding 'set_indicator' RTAS call
>   tests: ibm,configure-connector RTAS call implementation
> 
>  tests/libqos/rtas.c | 105 +++++++++++++++++++++++++
>  tests/libqos/rtas.h |   5 ++
>  tests/rtas-test.c   | 218 ++++++++++++++++++++++++++++++++++++++++++++++++++++
>  3 files changed, 328 insertions(+)
> 

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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Re: [Qemu-devel] [Qemu-ppc] [PATCH v1 0/3] ppc: adding some RTAS calls in tests/libqos

[Daniel Henrique Barboza]

On 10/30/2017 06:12 PM, David Gibson wrote:
> On Thu, Oct 26, 2017 at 06:22:47PM -0200, Daniel Henrique Barboza wrote:
>> This series implements a few RTAS hypercalls in tests/libqos
>> that, used together, implement the DRC state transition described
>> in PAPR 2.7+, 13.4.
>>
>> This started as an attempt of implementing hot unplug qtests for the
>> sPAPR machine but I've found a few issues that will require more time
>> solving:
>>
>> - CPU hot unplug: for some reason the machine freezes after the
>> callback is returned.
>>
>> - LMB hot unplug: not supported by the sPAPR machine if not
>> set in CAS.
>>
>> I have a feeling that the CPU hot unplug  issue might be related
>> with the lack of CAS negotiation step as well, but only way to be
>> sure is to further understanding how the CAS negotation interfere
>> with the device hot unplug. If needed we'll have to implement the
>> client architecture support hypercall as well in the future.
>>
>> Until then, I believe these hypercalls have a value of their own and
>> are worth being pushed upstream.
> Unfortunately, these changes break the Travis build on MacOS.

Hmpf .... how can I run this Travis build to see the errors? I've searched
here and found out something about making a Github pull request and
then https://travis-ci.org/qemu/qemu runs the Travis build in the request.
Is this a valid way of running it?


Thanks,

Daniel

>>
>> Daniel Henrique Barboza (3):
>>    tests: adding 'check_exception' RTAS implementation
>>    tests: adding 'set_indicator' RTAS call
>>    tests: ibm,configure-connector RTAS call implementation
>>
>>   tests/libqos/rtas.c | 105 +++++++++++++++++++++++++
>>   tests/libqos/rtas.h |   5 ++
>>   tests/rtas-test.c   | 218 ++++++++++++++++++++++++++++++++++++++++++++++++++++
>>   3 files changed, 328 insertions(+)
>>

Re: [Qemu-devel] [Qemu-ppc] [PATCH v1 0/3] ppc: adding some RTAS calls in tests/libqos

[Daniel Henrique Barboza]

On 10/30/2017 06:29 PM, Daniel Henrique Barboza wrote:
>
>
> On 10/30/2017 06:12 PM, David Gibson wrote:
>> On Thu, Oct 26, 2017 at 06:22:47PM -0200, Daniel Henrique Barboza wrote:
>>> This series implements a few RTAS hypercalls in tests/libqos
>>> that, used together, implement the DRC state transition described
>>> in PAPR 2.7+, 13.4.
>>>
>>> This started as an attempt of implementing hot unplug qtests for the
>>> sPAPR machine but I've found a few issues that will require more time
>>> solving:
>>>
>>> - CPU hot unplug: for some reason the machine freezes after the
>>> callback is returned.
>>>
>>> - LMB hot unplug: not supported by the sPAPR machine if not
>>> set in CAS.
>>>
>>> I have a feeling that the CPU hot unplug  issue might be related
>>> with the lack of CAS negotiation step as well, but only way to be
>>> sure is to further understanding how the CAS negotation interfere
>>> with the device hot unplug. If needed we'll have to implement the
>>> client architecture support hypercall as well in the future.
>>>
>>> Until then, I believe these hypercalls have a value of their own and
>>> are worth being pushed upstream.
>> Unfortunately, these changes break the Travis build on MacOS.
>
> Hmpf .... how can I run this Travis build to see the errors? I've 
> searched
> here and found out something about making a Github pull request and
> then https://travis-ci.org/qemu/qemu runs the Travis build in the 
> request.
> Is this a valid way of running it?
>

Just managed to run the build and saw the error. I'll fix it in v2.


Daniel

>
> Thanks,
>
> Daniel
>
>>>
>>> Daniel Henrique Barboza (3):
>>>    tests: adding 'check_exception' RTAS implementation
>>>    tests: adding 'set_indicator' RTAS call
>>>    tests: ibm,configure-connector RTAS call implementation
>>>
>>>   tests/libqos/rtas.c | 105 +++++++++++++++++++++++++
>>>   tests/libqos/rtas.h |   5 ++
>>>   tests/rtas-test.c   | 218 
>>> ++++++++++++++++++++++++++++++++++++++++++++++++++++
>>>   3 files changed, 328 insertions(+)
>>>
>
>