[RFC v1 0/4] unbreak non-tcg builds

[RFC v1 0/4] unbreak non-tcg builds

[Claudio Fontana]

please do not apply as-is, this is to track the current
changes needed to unbreak non-tcg builds and for RFC only.
This is to kick start the discussion on how to fix these problems.

Claudio Fontana (3):
  qtest: unbreak non-TCG builds in bios-tables-test
  qtest: do not build ide-test if TCG is not available
  replay: do not build if TCG is not available

Paolo Bonzini (1):
  tests/Makefile.include: unbreak non-tcg builds

 migration/savevm.c             | 11 ++--
 replay/meson.build             |  2 +-
 stubs/replay.c                 | 99 ++++++++++++++++++++++++++++++++++
 tests/Makefile.include         |  2 +-
 tests/qtest/bios-tables-test.c | 10 ++++
 tests/qtest/meson.build        |  2 +-
 tests/qtest/qmp-cmd-test.c     |  3 ++
 7 files changed, 122 insertions(+), 7 deletions(-)

-- 
2.26.2

[RFC v1 1/4] tests/Makefile.include: unbreak non-tcg builds

[Claudio Fontana]

From: Paolo Bonzini <pbonzini@redhat.com>

XXX known to be wrong, this breaks other non-native builds

remove dependency of check-block from non-native archs


---
 tests/Makefile.include | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/Makefile.include b/tests/Makefile.include
index 5aca98e60c..1ca70d88ce 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -140,7 +140,7 @@ QEMU_IOTESTS_HELPERS-$(CONFIG_LINUX) = tests/qemu-iotests/socket_scm_helper$(EXE
 check: check-block
 check-block: $(SRC_PATH)/tests/check-block.sh qemu-img$(EXESUF) \
 		qemu-io$(EXESUF) qemu-nbd$(EXESUF) $(QEMU_IOTESTS_HELPERS-y) \
-		$(patsubst %-softmmu,qemu-system-%,$(filter %-softmmu,$(TARGET_DIRS)))
+		qemu-system-$(patsubst ppc64%,ppc64, $(shell uname -m))
 	@$<
 endif
 
-- 
2.26.2

[RFC v1 2/4] qtest: unbreak non-TCG builds in bios-tables-test

[Claudio Fontana]

the tests assume TCG is available, thus breaking
for TCG-only tests, where only the TCG accelerator option
is passed to the QEMU binary.

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Claudio Fontana <cfontana@suse.de>
---
 tests/qtest/bios-tables-test.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tests/qtest/bios-tables-test.c b/tests/qtest/bios-tables-test.c
index e15f36c8c7..e783da54ba 100644
--- a/tests/qtest/bios-tables-test.c
+++ b/tests/qtest/bios-tables-test.c
@@ -122,6 +122,9 @@ static void free_test_data(test_data *data)
 {
     int i;
 
+    if (!data->tables) {
+        return;
+    }
     for (i = 0; i < data->tables->len; ++i) {
         cleanup_table_descriptor(&g_array_index(data->tables, AcpiSdtTable, i));
     }
@@ -651,6 +654,13 @@ static void test_acpi_one(const char *params, test_data *data)
     char *args;
     bool use_uefi = data->uefi_fl1 && data->uefi_fl2;
 
+#ifndef CONFIG_TCG
+    if (data->tcg_only) {
+        g_test_skip("TCG disabled, skipping ACPI tcg_only test");
+        return;
+    }
+#endif /* CONFIG_TCG */
+
     if (use_uefi) {
         /*
          * TODO: convert '-drive if=pflash' to new syntax (see e33763be7cd3)
-- 
2.26.2

[RFC v1 3/4] qtest: do not build ide-test if TCG is not available

[Claudio Fontana]

it seems that ide-test depends on TCG currently.

Signed-off-by: Claudio Fontana <cfontana@suse.de>
---
 tests/qtest/meson.build | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build
index ad33ac311d..3418f65e2a 100644
--- a/tests/qtest/meson.build
+++ b/tests/qtest/meson.build
@@ -46,9 +46,9 @@ qtests_i386 = \
   (config_all_devices.has_key('CONFIG_TPM_TIS_ISA') ? ['tpm-tis-test'] : []) +              \
   (config_all_devices.has_key('CONFIG_TPM_TIS_ISA') ? ['tpm-tis-swtpm-test'] : []) +        \
   (config_all_devices.has_key('CONFIG_RTL8139_PCI') ? ['rtl8139-test'] : []) +              \
+  (config_all.has_key('CONFIG_TCG') ? ['ide-test'] : []) +                                  \
   qtests_pci +                                                                              \
   ['fdc-test',
-   'ide-test',
    'hd-geo-test',
    'boot-order-test',
    'bios-tables-test',
-- 
2.26.2

[RFC v1 4/4] replay: do not build if TCG is not available

[Claudio Fontana]

replay requires icount, which needs TCG.

stub the needed functions in stub/,
including errors for hmp and qmp commands.

Signed-off-by: Claudio Fontana <cfontana@suse.de>
---
 migration/savevm.c         | 11 +++--
 replay/meson.build         |  2 +-
 stubs/replay.c             | 99 ++++++++++++++++++++++++++++++++++++++
 tests/qtest/qmp-cmd-test.c |  3 ++
 4 files changed, 110 insertions(+), 5 deletions(-)

diff --git a/migration/savevm.c b/migration/savevm.c
index d2e141f7b1..d9181ca520 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -63,6 +63,7 @@
 #include "migration/colo.h"
 #include "qemu/bitmap.h"
 #include "net/announce.h"
+#include "sysemu/tcg.h"
 
 const unsigned int postcopy_ram_discard_version = 0;
 
@@ -2674,10 +2675,12 @@ int save_snapshot(const char *name, Error **errp)
         return ret;
     }
 
-    if (!replay_can_snapshot()) {
-        error_setg(errp, "Record/replay does not allow making snapshot "
-                   "right now. Try once more later.");
-        return ret;
+    if (tcg_enabled()) {
+        if (!replay_can_snapshot()) {
+            error_setg(errp, "Record/replay does not allow making snapshot "
+                       "right now. Try once more later.");
+            return ret;
+        }
     }
 
     if (!bdrv_all_can_snapshot(&bs)) {
diff --git a/replay/meson.build b/replay/meson.build
index f91163fb1e..cb3207740a 100644
--- a/replay/meson.build
+++ b/replay/meson.build
@@ -1,4 +1,4 @@
-softmmu_ss.add(files(
+softmmu_ss.add(when: 'CONFIG_TCG', if_true: files(
   'replay.c',
   'replay-internal.c',
   'replay-events.c',
diff --git a/stubs/replay.c b/stubs/replay.c
index 45ebe77fb9..ff35daf198 100644
--- a/stubs/replay.c
+++ b/stubs/replay.c
@@ -103,3 +103,102 @@ bool replay_reverse_continue(void)
 {
     return false;
 }
+
+void replay_add_blocker(Error *reason)
+{
+}
+void replay_audio_in(size_t *recorded, void *samples, size_t *wpos, size_t size)
+{
+}
+void replay_audio_out(size_t *played)
+{
+}
+void replay_bh_schedule_event(QEMUBH *bh)
+{
+}
+void replay_breakpoint(void)
+{
+}
+bool replay_can_snapshot(void)
+{
+    return false;
+}
+void replay_configure(struct QemuOpts *opts)
+{
+}
+void replay_flush_events(void)
+{
+}
+void replay_gdb_attached(void)
+{
+}
+void replay_input_event(QemuConsole *src, InputEvent *evt)
+{
+}
+void replay_input_sync_event(void)
+{
+}
+void replay_net_packet_event(ReplayNetState *rns, unsigned flags,
+                             const struct iovec *iov, int iovcnt)
+{
+}
+ReplayNetState *replay_register_net(NetFilterState *nfs)
+{
+    return NULL;
+}
+bool replay_running_debug(void)
+{
+    return false;
+}
+void replay_shutdown_request(ShutdownCause cause)
+{
+}
+void replay_start(void)
+{
+}
+void replay_unregister_net(ReplayNetState *rns)
+{
+}
+void replay_vmstate_init(void)
+{
+}
+
+#include "monitor/monitor.h"
+#include "monitor/hmp.h"
+#include "qapi/qapi-commands-replay.h"
+#include "qapi/error.h"
+#include "qemu/error-report.h"
+
+void hmp_info_replay(Monitor *mon, const QDict *qdict)
+{
+    error_report("replay support not available\n");
+}
+void hmp_replay_break(Monitor *mon, const QDict *qdict)
+{
+    error_report("replay support not available\n");
+}
+void hmp_replay_delete_break(Monitor *mon, const QDict *qdict)
+{
+    error_report("replay support not available\n");
+}
+void hmp_replay_seek(Monitor *mon, const QDict *qdict)
+{
+    error_report("replay support not available\n");
+}
+ReplayInfo *qmp_query_replay(Error **errp)
+{
+    error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND, "replay support not available");
+    return NULL;
+}
+void qmp_replay_break(int64_t icount, Error **errp)
+{
+    error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND, "replay support not available");
+}
+void qmp_replay_delete_break(Error **errp)
+{
+    error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND, "replay support not available");
+}
+void qmp_replay_seek(int64_t icount, Error **errp)
+{
+    error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND, "replay support not available");
+}
diff --git a/tests/qtest/qmp-cmd-test.c b/tests/qtest/qmp-cmd-test.c
index 8a4c570e83..1c7186e53c 100644
--- a/tests/qtest/qmp-cmd-test.c
+++ b/tests/qtest/qmp-cmd-test.c
@@ -31,6 +31,9 @@ static int query_error_class(const char *cmd)
 #ifndef CONFIG_SPICE
         { "query-spice", ERROR_CLASS_COMMAND_NOT_FOUND },
 #endif
+#ifndef CONFIG_TCG
+        { "query-replay", ERROR_CLASS_COMMAND_NOT_FOUND },
+#endif
 #ifndef CONFIG_VNC
         { "query-vnc", ERROR_CLASS_GENERIC_ERROR },
         { "query-vnc-servers", ERROR_CLASS_GENERIC_ERROR },
-- 
2.26.2

Re: [RFC v1 0/4] unbreak non-tcg builds

[no-reply]

Patchew URL: https://patchew.org/QEMU/20201009152108.16120-1-cfontana@suse.de/



Hi,

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

Type: series
Message-id: 20201009152108.16120-1-cfontana@suse.de
Subject: [RFC v1 0/4] unbreak non-tcg builds

=== TEST SCRIPT BEGIN ===
#!/bin/bash
git rev-parse base > /dev/null || exit 0
git config --local diff.renamelimit 0
git config --local diff.renames True
git config --local diff.algorithm histogram
./scripts/checkpatch.pl --mailback base..
=== TEST SCRIPT END ===

Updating 3c8cf5a9c21ff8782164d1def7f44bd888713384
From https://github.com/patchew-project/qemu
   b7092cd..e1c30c4  master     -> master
 - [tag update]      patchew/20200930003033.554124-1-laurent@vivier.eu -> patchew/20200930003033.554124-1-laurent@vivier.eu
 - [tag update]      patchew/20201008202713.1416823-1-ehabkost@redhat.com -> patchew/20201008202713.1416823-1-ehabkost@redhat.com
 * [new tag]         patchew/20201009152108.16120-1-cfontana@suse.de -> patchew/20201009152108.16120-1-cfontana@suse.de
 - [tag update]      patchew/8f07132478469b35fb50a4706691e2b56b10a67b.camel@gmail.com -> patchew/8f07132478469b35fb50a4706691e2b56b10a67b.camel@gmail.com
Switched to a new branch 'test'
2ca7ef6 replay: do not build if TCG is not available
8d5176b qtest: do not build ide-test if TCG is not available
2c8768d qtest: unbreak non-TCG builds in bios-tables-test
93bdf53 tests/Makefile.include: unbreak non-tcg builds

=== OUTPUT BEGIN ===
1/4 Checking commit 93bdf53ce1d2 (tests/Makefile.include: unbreak non-tcg builds)
ERROR: Missing Signed-off-by: line(s)

total: 1 errors, 0 warnings, 8 lines checked

Patch 1/4 has style problems, please review.  If any of these errors
are false positives report them to the maintainer, see
CHECKPATCH in MAINTAINERS.

2/4 Checking commit 2c8768d98a82 (qtest: unbreak non-TCG builds in bios-tables-test)
3/4 Checking commit 8d5176ba88fb (qtest: do not build ide-test if TCG is not available)
4/4 Checking commit 2ca7ef6b4d8e (replay: do not build if TCG is not available)
ERROR: Error messages should not contain newlines
#130: FILE: stubs/replay.c:174:
+    error_report("replay support not available\n");

ERROR: Error messages should not contain newlines
#134: FILE: stubs/replay.c:178:
+    error_report("replay support not available\n");

ERROR: Error messages should not contain newlines
#138: FILE: stubs/replay.c:182:
+    error_report("replay support not available\n");

ERROR: Error messages should not contain newlines
#142: FILE: stubs/replay.c:186:
+    error_report("replay support not available\n");

WARNING: line over 80 characters
#146: FILE: stubs/replay.c:190:
+    error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND, "replay support not available");

WARNING: line over 80 characters
#151: FILE: stubs/replay.c:195:
+    error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND, "replay support not available");

WARNING: line over 80 characters
#155: FILE: stubs/replay.c:199:
+    error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND, "replay support not available");

WARNING: line over 80 characters
#159: FILE: stubs/replay.c:203:
+    error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND, "replay support not available");

total: 4 errors, 4 warnings, 139 lines checked

Patch 4/4 has style problems, please review.  If any of these errors
are false positives report them to the maintainer, see
CHECKPATCH in MAINTAINERS.

=== OUTPUT END ===

Test command exited with code: 1


The full log is available at
http://patchew.org/logs/20201009152108.16120-1-cfontana@suse.de/testing.checkpatch/?type=message.
---
Email generated automatically by Patchew [https://patchew.org/].
Please send your feedback to patchew-devel@redhat.com

Re: [RFC v1 4/4] replay: do not build if TCG is not available

[Paolo Bonzini]

On 09/10/20 17:21, Claudio Fontana wrote:
> replay requires icount, which needs TCG.
> 
> stub the needed functions in stub/,
> including errors for hmp and qmp commands.
> 
> Signed-off-by: Claudio Fontana <cfontana@suse.de>

Looks plausible, though probably I'd put it in replay/stubs.c and use
if_false to link it.

Paolo

> ---
>  migration/savevm.c         | 11 +++--
>  replay/meson.build         |  2 +-
>  stubs/replay.c             | 99 ++++++++++++++++++++++++++++++++++++++
>  tests/qtest/qmp-cmd-test.c |  3 ++
>  4 files changed, 110 insertions(+), 5 deletions(-)
> 
> diff --git a/migration/savevm.c b/migration/savevm.c
> index d2e141f7b1..d9181ca520 100644
> --- a/migration/savevm.c
> +++ b/migration/savevm.c
> @@ -63,6 +63,7 @@
>  #include "migration/colo.h"
>  #include "qemu/bitmap.h"
>  #include "net/announce.h"
> +#include "sysemu/tcg.h"
>  
>  const unsigned int postcopy_ram_discard_version = 0;
>  
> @@ -2674,10 +2675,12 @@ int save_snapshot(const char *name, Error **errp)
>          return ret;
>      }
>  
> -    if (!replay_can_snapshot()) {
> -        error_setg(errp, "Record/replay does not allow making snapshot "
> -                   "right now. Try once more later.");
> -        return ret;
> +    if (tcg_enabled()) {
> +        if (!replay_can_snapshot()) {
> +            error_setg(errp, "Record/replay does not allow making snapshot "
> +                       "right now. Try once more later.");
> +            return ret;
> +        }
>      }
>  
>      if (!bdrv_all_can_snapshot(&bs)) {
> diff --git a/replay/meson.build b/replay/meson.build
> index f91163fb1e..cb3207740a 100644
> --- a/replay/meson.build
> +++ b/replay/meson.build
> @@ -1,4 +1,4 @@
> -softmmu_ss.add(files(
> +softmmu_ss.add(when: 'CONFIG_TCG', if_true: files(
>    'replay.c',
>    'replay-internal.c',
>    'replay-events.c',
> diff --git a/stubs/replay.c b/stubs/replay.c
> index 45ebe77fb9..ff35daf198 100644
> --- a/stubs/replay.c
> +++ b/stubs/replay.c
> @@ -103,3 +103,102 @@ bool replay_reverse_continue(void)
>  {
>      return false;
>  }
> +
> +void replay_add_blocker(Error *reason)
> +{
> +}
> +void replay_audio_in(size_t *recorded, void *samples, size_t *wpos, size_t size)
> +{
> +}
> +void replay_audio_out(size_t *played)
> +{
> +}
> +void replay_bh_schedule_event(QEMUBH *bh)
> +{
> +}
> +void replay_breakpoint(void)
> +{
> +}
> +bool replay_can_snapshot(void)
> +{
> +    return false;
> +}
> +void replay_configure(struct QemuOpts *opts)
> +{
> +}
> +void replay_flush_events(void)
> +{
> +}
> +void replay_gdb_attached(void)
> +{
> +}
> +void replay_input_event(QemuConsole *src, InputEvent *evt)
> +{
> +}
> +void replay_input_sync_event(void)
> +{
> +}
> +void replay_net_packet_event(ReplayNetState *rns, unsigned flags,
> +                             const struct iovec *iov, int iovcnt)
> +{
> +}
> +ReplayNetState *replay_register_net(NetFilterState *nfs)
> +{
> +    return NULL;
> +}
> +bool replay_running_debug(void)
> +{
> +    return false;
> +}
> +void replay_shutdown_request(ShutdownCause cause)
> +{
> +}
> +void replay_start(void)
> +{
> +}
> +void replay_unregister_net(ReplayNetState *rns)
> +{
> +}
> +void replay_vmstate_init(void)
> +{
> +}
> +
> +#include "monitor/monitor.h"
> +#include "monitor/hmp.h"
> +#include "qapi/qapi-commands-replay.h"
> +#include "qapi/error.h"
> +#include "qemu/error-report.h"
> +
> +void hmp_info_replay(Monitor *mon, const QDict *qdict)
> +{
> +    error_report("replay support not available\n");
> +}
> +void hmp_replay_break(Monitor *mon, const QDict *qdict)
> +{
> +    error_report("replay support not available\n");
> +}
> +void hmp_replay_delete_break(Monitor *mon, const QDict *qdict)
> +{
> +    error_report("replay support not available\n");
> +}
> +void hmp_replay_seek(Monitor *mon, const QDict *qdict)
> +{
> +    error_report("replay support not available\n");
> +}
> +ReplayInfo *qmp_query_replay(Error **errp)
> +{
> +    error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND, "replay support not available");
> +    return NULL;
> +}
> +void qmp_replay_break(int64_t icount, Error **errp)
> +{
> +    error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND, "replay support not available");
> +}
> +void qmp_replay_delete_break(Error **errp)
> +{
> +    error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND, "replay support not available");
> +}
> +void qmp_replay_seek(int64_t icount, Error **errp)
> +{
> +    error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND, "replay support not available");
> +}
> diff --git a/tests/qtest/qmp-cmd-test.c b/tests/qtest/qmp-cmd-test.c
> index 8a4c570e83..1c7186e53c 100644
> --- a/tests/qtest/qmp-cmd-test.c
> +++ b/tests/qtest/qmp-cmd-test.c
> @@ -31,6 +31,9 @@ static int query_error_class(const char *cmd)
>  #ifndef CONFIG_SPICE
>          { "query-spice", ERROR_CLASS_COMMAND_NOT_FOUND },
>  #endif
> +#ifndef CONFIG_TCG
> +        { "query-replay", ERROR_CLASS_COMMAND_NOT_FOUND },
> +#endif
>  #ifndef CONFIG_VNC
>          { "query-vnc", ERROR_CLASS_GENERIC_ERROR },
>          { "query-vnc-servers", ERROR_CLASS_GENERIC_ERROR },
> 

Re: [RFC v1 3/4] qtest: do not build ide-test if TCG is not available

[Paolo Bonzini]

On 09/10/20 17:21, Claudio Fontana wrote:
> it seems that ide-test depends on TCG currently.
> 
> Signed-off-by: Claudio Fontana <cfontana@suse.de>
> ---
>  tests/qtest/meson.build | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build
> index ad33ac311d..3418f65e2a 100644
> --- a/tests/qtest/meson.build
> +++ b/tests/qtest/meson.build
> @@ -46,9 +46,9 @@ qtests_i386 = \
>    (config_all_devices.has_key('CONFIG_TPM_TIS_ISA') ? ['tpm-tis-test'] : []) +              \
>    (config_all_devices.has_key('CONFIG_TPM_TIS_ISA') ? ['tpm-tis-swtpm-test'] : []) +        \
>    (config_all_devices.has_key('CONFIG_RTL8139_PCI') ? ['rtl8139-test'] : []) +              \
> +  (config_all.has_key('CONFIG_TCG') ? ['ide-test'] : []) +                                  \
>    qtests_pci +                                                                              \
>    ['fdc-test',
> -   'ide-test',
>     'hd-geo-test',
>     'boot-order-test',
>     'bios-tables-test',
> 

Interesting, why?...

Paolo

Re: [RFC v1 2/4] qtest: unbreak non-TCG builds in bios-tables-test

[Paolo Bonzini]

On 09/10/20 17:21, Claudio Fontana wrote:
> the tests assume TCG is available, thus breaking
> for TCG-only tests, where only the TCG accelerator option
> is passed to the QEMU binary.
> 
> Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
> Signed-off-by: Claudio Fontana <cfontana@suse.de>
> ---
>  tests/qtest/bios-tables-test.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/tests/qtest/bios-tables-test.c b/tests/qtest/bios-tables-test.c
> index e15f36c8c7..e783da54ba 100644
> --- a/tests/qtest/bios-tables-test.c
> +++ b/tests/qtest/bios-tables-test.c
> @@ -122,6 +122,9 @@ static void free_test_data(test_data *data)
>  {
>      int i;
>  
> +    if (!data->tables) {
> +        return;
> +    }
>      for (i = 0; i < data->tables->len; ++i) {
>          cleanup_table_descriptor(&g_array_index(data->tables, AcpiSdtTable, i));
>      }
> @@ -651,6 +654,13 @@ static void test_acpi_one(const char *params, test_data *data)
>      char *args;
>      bool use_uefi = data->uefi_fl1 && data->uefi_fl2;
>  
> +#ifndef CONFIG_TCG
> +    if (data->tcg_only) {
> +        g_test_skip("TCG disabled, skipping ACPI tcg_only test");
> +        return;
> +    }
> +#endif /* CONFIG_TCG */
> +
>      if (use_uefi) {
>          /*
>           * TODO: convert '-drive if=pflash' to new syntax (see e33763be7cd3)
> 

Acked-by: Paolo Bonzini <pbonzini@redhat.com>

Re: [RFC v1 1/4] tests/Makefile.include: unbreak non-tcg builds

[Paolo Bonzini]

On 09/10/20 17:21, Claudio Fontana wrote:
> From: Paolo Bonzini <pbonzini@redhat.com>
> 
> XXX known to be wrong, this breaks other non-native builds
> 
> remove dependency of check-block from non-native archs
> 
> 
> ---
>  tests/Makefile.include | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tests/Makefile.include b/tests/Makefile.include
> index 5aca98e60c..1ca70d88ce 100644
> --- a/tests/Makefile.include
> +++ b/tests/Makefile.include
> @@ -140,7 +140,7 @@ QEMU_IOTESTS_HELPERS-$(CONFIG_LINUX) = tests/qemu-iotests/socket_scm_helper$(EXE
>  check: check-block
>  check-block: $(SRC_PATH)/tests/check-block.sh qemu-img$(EXESUF) \
>  		qemu-io$(EXESUF) qemu-nbd$(EXESUF) $(QEMU_IOTESTS_HELPERS-y) \
> -		$(patsubst %-softmmu,qemu-system-%,$(filter %-softmmu,$(TARGET_DIRS)))
> +		qemu-system-$(patsubst ppc64%,ppc64, $(shell uname -m))
>  	@$<
>  endif
>  
> 

This is a better one:

diff --git a/tests/Makefile.include b/tests/Makefile.include
index 5aca98e60c..ceeda65da2 100644
--- a/tests/Makefile.include
+++ b/tests/Makefile.include
@@ -140,7 +140,7 @@ QEMU_IOTESTS_HELPERS-$(CONFIG_LINUX) = tests/qemu-iotests/socket_scm_helper$(EXE
 check: check-block
 check-block: $(SRC_PATH)/tests/check-block.sh qemu-img$(EXESUF) \
 		qemu-io$(EXESUF) qemu-nbd$(EXESUF) $(QEMU_IOTESTS_HELPERS-y) \
-		$(patsubst %-softmmu,qemu-system-%,$(filter %-softmmu,$(TARGET_DIRS)))
+		$(filter qemu-system-%, $(ninja-targets-c_LINKER) $(ninja-targets-cpp_LINKER))
 	@$<
 endif
 

Re: [RFC v1 3/4] qtest: do not build ide-test if TCG is not available

[Claudio Fontana]

On 10/9/20 6:01 PM, Paolo Bonzini wrote:
> On 09/10/20 17:21, Claudio Fontana wrote:
>> it seems that ide-test depends on TCG currently.
>>
>> Signed-off-by: Claudio Fontana <cfontana@suse.de>
>> ---
>>  tests/qtest/meson.build | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build
>> index ad33ac311d..3418f65e2a 100644
>> --- a/tests/qtest/meson.build
>> +++ b/tests/qtest/meson.build
>> @@ -46,9 +46,9 @@ qtests_i386 = \
>>    (config_all_devices.has_key('CONFIG_TPM_TIS_ISA') ? ['tpm-tis-test'] : []) +              \
>>    (config_all_devices.has_key('CONFIG_TPM_TIS_ISA') ? ['tpm-tis-swtpm-test'] : []) +        \
>>    (config_all_devices.has_key('CONFIG_RTL8139_PCI') ? ['rtl8139-test'] : []) +              \
>> +  (config_all.has_key('CONFIG_TCG') ? ['ide-test'] : []) +                                  \
>>    qtests_pci +                                                                              \
>>    ['fdc-test',
>> -   'ide-test',
>>     'hd-geo-test',
>>     'boot-order-test',
>>     'bios-tables-test',
>>
> 
> Interesting, why?...
> 
> Paolo
> 
> 

I am slowly trying to find out. I found out that the qos-test that buzzes is ide-test,
and I found out which specific ide test it was by manually bisecting functions inside the qtest_add_func in ide-test.c.

The issue seems limited to qtest_add_func("/ide/bmdma/trim", test_bmdma_trim);
No idea yet why that test buzzes forever.

Side note, maybe more verbose output on which specific test is attempted could be helpful? maybe only enabled on make V=2 ?

So the buzz.
top says:

22621 claudio   20   0   89700   3292   3004 R 53.82 0.010   1:22.43 ide-test                                                              
22844 claudio   20   0 1026700  61168  38632 R 99.67 0.188   2:39.53 qemu-system-i38                                                       
25325 claudio   20   0   89700   3208   2940 R 52.16 0.010   0:56.05 ide-test       
25403 claudio   20   0 1026720  63028  38416 R 99.67 0.194   1:48.63 qemu-system-x86                                                       


i386 and x86_64 seem to show the exact same behaviour.


gdb says:

qemu-system-x86 (25403):

(gdb) info threads
  Id   Target Id                                           Frame 
* 1    Thread 0x7fe35a406140 (LWP 25403) "qemu-system-x86" 0x00007fe35157f7d6 in ppoll () from /lib64/libc.so.6
  2    Thread 0x7fe33946e700 (LWP 25415) "qemu-system-x86" 0x00007fe351584839 in syscall () from /lib64/libc.so.6
  3    Thread 0x7fe338c6d700 (LWP 25439) "qemu-system-x86" 0x00007fe35157f6db in poll () from /lib64/libc.so.6
  4    Thread 0x7fe333fff700 (LWP 25440) "qemu-system-x86" 0x00007fe35185bdcf in do_sigwait () from /lib64/libpthread.so.0

(gdb) thread 1
[Switching to thread 1 (Thread 0x7fe35a406140 (LWP 25403))]
#0  0x00007fe35157f7d6 in ppoll () from /lib64/libc.so.6
(gdb) bt
#0  0x00007fe35157f7d6 in ppoll () at /lib64/libc.so.6
#1  0x000055a1f3138309 in ppoll (__ss=0x0, __timeout=0x7fff64d10b70, __nfds=<optimized out>, __fds=<optimized out>)
    at /usr/include/bits/poll2.h:77
#2  0x000055a1f3138309 in qemu_poll_ns (fds=<optimized out>, nfds=<optimized out>, timeout=timeout@entry=27462700)
    at ../util/qemu-timer.c:349
#3  0x000055a1f31512a5 in os_host_main_loop_wait (timeout=27462700) at ../util/main-loop.c:239
#4  0x000055a1f31512a5 in main_loop_wait (nonblocking=nonblocking@entry=0) at ../util/main-loop.c:520
#5  0x000055a1f2fc4bbd in qemu_main_loop () at ../softmmu/vl.c:1677
#6  0x000055a1f2d001fe in main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at ../softmmu/main.c:50

(gdb) thread 2
[Switching to thread 2 (Thread 0x7fe33946e700 (LWP 25415))]
#0  0x00007fe351584839 in syscall () from /lib64/libc.so.6
(gdb) bt
#0  0x00007fe351584839 in syscall () at /lib64/libc.so.6
#1  0x000055a1f312605b in qemu_futex_wait (val=<optimized out>, f=<optimized out>)
    at /home/claudio/git/qemu-pristine/qemu/include/qemu/futex.h:29
#2  0x000055a1f312605b in qemu_event_wait (ev=ev@entry=0x55a1f3a44208 <rcu_call_ready_event>) at ../util/qemu-thread-posix.c:460
#3  0x000055a1f314f868 in call_rcu_thread (opaque=opaque@entry=0x0) at ../util/rcu.c:258
#4  0x000055a1f3125276 in qemu_thread_start (args=<optimized out>) at ../util/qemu-thread-posix.c:521
#5  0x00007fe3518514f9 in start_thread () at /lib64/libpthread.so.0
#6  0x00007fe351589fbf in clone () at /lib64/libc.so.6
(gdb) frame 3
#3  0x000055a1f314f868 in call_rcu_thread (opaque=opaque@entry=0x0) at ../util/rcu.c:258
258                         qemu_event_wait(&rcu_call_ready_event);
(gdb) list 258
253                     n = qatomic_read(&rcu_call_count);
254                     if (n == 0) {
255     #if defined(CONFIG_MALLOC_TRIM)
256                         malloc_trim(4 * 1024 * 1024);
257     #endif
258                         qemu_event_wait(&rcu_call_ready_event);
259                     }
260                 }
261                 n = qatomic_read(&rcu_call_count);
262             }


(gdb) thread 3
[Switching to thread 3 (Thread 0x7fe338c6d700 (LWP 25439))]
#0  0x00007fe35157f6db in poll () from /lib64/libc.so.6
(gdb) bt
#0  0x00007fe35157f6db in poll () at /lib64/libc.so.6
#1  0x00007fe357087779 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007fe357087ac2 in g_main_loop_run () at /usr/lib64/libglib-2.0.so.0
#3  0x000055a1f2dc1c51 in iothread_run (opaque=opaque@entry=0x55a1f4b20250) at ../iothread.c:80
#4  0x000055a1f3125276 in qemu_thread_start (args=<optimized out>) at ../util/qemu-thread-posix.c:521
#5  0x00007fe3518514f9 in start_thread () at /lib64/libpthread.so.0
#6  0x00007fe351589fbf in clone () at /lib64/libc.so.6
(gdb) frame 3
#3  0x000055a1f2dc1c51 in iothread_run (opaque=opaque@entry=0x55a1f4b20250) at ../iothread.c:80
80                  g_main_loop_run(iothread->main_loop);
(gdb) list 80
75              /*
76               * We must check the running state again in case it was
77               * changed in previous aio_poll()
78               */
79              if (iothread->running && qatomic_read(&iothread->run_gcontext)) {
80                  g_main_loop_run(iothread->main_loop);
81              }
82          }
83


(gdb) thread 4
[Switching to thread 4 (Thread 0x7fe333fff700 (LWP 25440))]
#0  0x00007fe35185bdcf in do_sigwait () from /lib64/libpthread.so.0
(gdb) bt
#0  0x00007fe35185bdcf in do_sigwait () at /lib64/libpthread.so.0
#1  0x00007fe35185be5d in sigwait () at /lib64/libpthread.so.0
#2  0x000055a1f2fd0543 in qtest_cpu_thread_fn (arg=arg@entry=0x55a1f4e84be0) at ../accel/qtest/qtest-cpus.c:59
#3  0x000055a1f3125276 in qemu_thread_start (args=<optimized out>) at ../util/qemu-thread-posix.c:521
#4  0x00007fe3518514f9 in start_thread () at /lib64/libpthread.so.0
#5  0x00007fe351589fbf in clone () at /lib64/libc.so.6

(gdb) list qtest_cpu_thread_fn 
26      #include "hw/core/cpu.h"
27
28      #include "qtest-cpus.h"
29
30      static void *qtest_cpu_thread_fn(void *arg)
31      {
32      #ifdef _WIN32
33          error_report("qtest is not supported under Windows");
34          exit(1);
35      #else
36          CPUState *cpu = arg;
37          sigset_t waitset;
38          int r;
39
40          rcu_register_thread();
41
42          qemu_mutex_lock_iothread();
43          qemu_thread_get_self(cpu->thread);
44          cpu->thread_id = qemu_get_thread_id();
45          cpu->can_do_io = 1;
46          current_cpu = cpu;
47
48          sigemptyset(&waitset);
49          sigaddset(&waitset, SIG_IPI);
50
51          /* signal CPU creation */
52          cpu_thread_signal_created(cpu);
53          qemu_guest_random_seed_thread_part2(cpu->random_seed);
54
55          do {
56              qemu_mutex_unlock_iothread();
57              do {
58                  int sig;
59                  r = sigwait(&waitset, &sig);
60              } while (r == -1 && (errno == EAGAIN || errno == EINTR));
61              if (r == -1) {
62                  perror("sigwait");
63                  exit(1);
64              }
65              qemu_mutex_lock_iothread();
66              qemu_wait_io_event(cpu);
67          } while (!cpu->unplug);
68
69          qemu_mutex_unlock_iothread();
70          rcu_unregister_thread();
71          return NULL;
72      #endif
73      }
74

----

ide-test (25325):

(gdb) thread 1
[Switching to thread 1 (Thread 0x7fdce50b81c0 (LWP 25325))]
#0  0x00007fdce4651deb in write () from /lib64/libpthread.so.0
(gdb) bt
#0  0x00007fdce4651deb in write () from /lib64/libpthread.so.0
#1  0x000055dc0150a3a7 in socket_send (fd=5, buf=0x55dc036b4bd0 "inb 0xc012\n", size=11) at ../tests/qtest/libqtest.c:400
#2  0x000055dc0150a73b in qtest_sendf (s=s@entry=0x55dc036b4ca0, fmt=fmt@entry=0x55dc015377e3 "%s 0x%x\n") at ../tests/qtest/libqtest.c:424
#3  0x000055dc0150aeea in qtest_in (s=0x55dc036b4ca0, cmd=<optimized out>, addr=<optimized out>) at ../tests/qtest/libqtest.c:929
#4  0x000055dc0150c613 in qtest_inb (s=<optimized out>, addr=<optimized out>) at ../tests/qtest/libqtest.c:940
#5  0x000055dc0150ef08 in qpci_io_readb (dev=<optimized out>, token=..., off=<optimized out>) at ../tests/qtest/libqos/pci.c:283
#6  0x000055dc015079c2 in send_dma_request (qts=0x55dc036b4ca0, cmd=<optimized out>, sector=0, nb_sectors=1, prdt=<optimized out>, 
    prdt_entries=<optimized out>, post_exec=0x0) at ../tests/qtest/ide-test.c:283
#7  0x000055dc0150839c in test_bmdma_trim () at ../tests/qtest/ide-test.c:426
#8  0x00007fdce4c11826 in ?? () from /usr/lib64/libglib-2.0.so.0
#9  0x00007fdce4c1173b in ?? () from /usr/lib64/libglib-2.0.so.0
#10 0x00007fdce4c1173b in ?? () from /usr/lib64/libglib-2.0.so.0
#11 0x00007fdce4c1173b in ?? () from /usr/lib64/libglib-2.0.so.0
#12 0x00007fdce4c11ce2 in g_test_run_suite () from /usr/lib64/libglib-2.0.so.0
#13 0x00007fdce4c11d01 in g_test_run () from /usr/lib64/libglib-2.0.so.0
#14 0x000055dc01506da6 in main (argc=<optimized out>, argv=<optimized out>) at ../tests/qtest/ide-test.c:1059

(gdb) thread 2
[Switching to thread 2 (Thread 0x7fdce3ff9700 (LWP 25327))]
#0  0x00007fdce437b839 in syscall () from /lib64/libc.so.6
(gdb) bt
#0  0x00007fdce437b839 in syscall () from /lib64/libc.so.6
#1  0x000055dc01528b1b in qemu_futex_wait (val=<optimized out>, f=<optimized out>)
    at /home/claudio/git/qemu-pristine/qemu/include/qemu/futex.h:29
#2  qemu_event_wait (ev=ev@entry=0x55dc017566e8 <rcu_call_ready_event>) at ../util/qemu-thread-posix.c:460
#3  0x000055dc01525c88 in call_rcu_thread (opaque=opaque@entry=0x0) at ../util/rcu.c:258
#4  0x000055dc01527d36 in qemu_thread_start (args=<optimized out>) at ../util/qemu-thread-posix.c:521
#5  0x00007fdce46484f9 in start_thread () from /lib64/libpthread.so.0
#6  0x00007fdce4380fbf in clone () from /lib64/libc.so.6

----

ide-test (22621):

(gdb) bt
#0  0x00007f4f9b723e88 in read () from /lib64/libpthread.so.0
#1  0x00005573ffafb512 in read (__nbytes=1024, __buf=0x7ffdd0be3bf0, __fd=<optimized out>) at /usr/include/bits/unistd.h:44
#2  qtest_client_socket_recv_line (s=0x55740104fca0) at ../tests/qtest/libqtest.c:472
#3  0x00005573ffafb7b1 in qtest_rsp (s=s@entry=0x55740104fca0, expected_args=expected_args@entry=2) at ../tests/qtest/libqtest.c:499
#4  0x00005573ffafbef7 in qtest_in (s=0x55740104fca0, cmd=<optimized out>, addr=<optimized out>) at ../tests/qtest/libqtest.c:930
#5  0x00005573ffafd613 in qtest_inb (s=<optimized out>, addr=<optimized out>) at ../tests/qtest/libqtest.c:940
#6  0x00005573ffafff08 in qpci_io_readb (dev=<optimized out>, token=..., off=<optimized out>) at ../tests/qtest/libqos/pci.c:283
#7  0x00005573ffaf89c2 in send_dma_request (qts=0x55740104fca0, cmd=<optimized out>, sector=0, nb_sectors=1, prdt=<optimized out>, 
    prdt_entries=<optimized out>, post_exec=0x0) at ../tests/qtest/ide-test.c:283
#8  0x00005573ffaf939c in test_bmdma_trim () at ../tests/qtest/ide-test.c:426
#9  0x00007f4f9bce3826 in ?? () from /usr/lib64/libglib-2.0.so.0
#10 0x00007f4f9bce373b in ?? () from /usr/lib64/libglib-2.0.so.0
#11 0x00007f4f9bce373b in ?? () from /usr/lib64/libglib-2.0.so.0
#12 0x00007f4f9bce373b in ?? () from /usr/lib64/libglib-2.0.so.0
#13 0x00007f4f9bce3ce2 in g_test_run_suite () from /usr/lib64/libglib-2.0.so.0
#14 0x00007f4f9bce3d01 in g_test_run () from /usr/lib64/libglib-2.0.so.0
#15 0x00005573ffaf7da6 in main (argc=<optimized out>, argv=<optimized out>) at ../tests/qtest/ide-test.c:1059

(gdb) thread 2
[Switching to thread 2 (Thread 0x7f4f9b0cb700 (LWP 22625))]
#0  0x00007f4f9b44d839 in syscall () from /lib64/libc.so.6
(gdb) bt
#0  0x00007f4f9b44d839 in syscall () from /lib64/libc.so.6
#1  0x00005573ffb19b1b in qemu_futex_wait (val=<optimized out>, f=<optimized out>)
    at /home/claudio/git/qemu-pristine/qemu/include/qemu/futex.h:29
#2  qemu_event_wait (ev=ev@entry=0x5573ffd476e8 <rcu_call_ready_event>) at ../util/qemu-thread-posix.c:460
#3  0x00005573ffb16c88 in call_rcu_thread (opaque=opaque@entry=0x0) at ../util/rcu.c:258
#4  0x00005573ffb18d36 in qemu_thread_start (args=<optimized out>) at ../util/qemu-thread-posix.c:521
#5  0x00007f4f9b71a4f9 in start_thread () from /lib64/libpthread.so.0
#6  0x00007f4f9b452fbf in clone () from /lib64/libc.so.6

This send_dma_request seems to never end but why..?

Ciao,

Claudio

Re: [RFC v1 3/4] qtest: do not build ide-test if TCG is not available

[Claudio Fontana]

On 10/10/20 12:50 PM, Claudio Fontana wrote:
> On 10/9/20 6:01 PM, Paolo Bonzini wrote:
>> On 09/10/20 17:21, Claudio Fontana wrote:
>>> it seems that ide-test depends on TCG currently.
>>>
>>> Signed-off-by: Claudio Fontana <cfontana@suse.de>
>>> ---
>>>  tests/qtest/meson.build | 2 +-
>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build
>>> index ad33ac311d..3418f65e2a 100644
>>> --- a/tests/qtest/meson.build
>>> +++ b/tests/qtest/meson.build
>>> @@ -46,9 +46,9 @@ qtests_i386 = \
>>>    (config_all_devices.has_key('CONFIG_TPM_TIS_ISA') ? ['tpm-tis-test'] : []) +              \
>>>    (config_all_devices.has_key('CONFIG_TPM_TIS_ISA') ? ['tpm-tis-swtpm-test'] : []) +        \
>>>    (config_all_devices.has_key('CONFIG_RTL8139_PCI') ? ['rtl8139-test'] : []) +              \
>>> +  (config_all.has_key('CONFIG_TCG') ? ['ide-test'] : []) +                                  \
>>>    qtests_pci +                                                                              \
>>>    ['fdc-test',
>>> -   'ide-test',
>>>     'hd-geo-test',
>>>     'boot-order-test',
>>>     'bios-tables-test',
>>>
>>
>> Interesting, why?...
>>
>> Paolo
>>
>>
> 
> I am slowly trying to find out. I found out that the qos-test that buzzes is ide-test,
> and I found out which specific ide test it was by manually bisecting functions inside the qtest_add_func in ide-test.c.
> 
> The issue seems limited to qtest_add_func("/ide/bmdma/trim", test_bmdma_trim);
> No idea yet why that test buzzes forever.
> 
> Side note, maybe more verbose output on which specific test is attempted could be helpful? maybe only enabled on make V=2 ?
> 
> So the buzz.
> top says:
> 
> 22621 claudio   20   0   89700   3292   3004 R 53.82 0.010   1:22.43 ide-test                                                              
> 22844 claudio   20   0 1026700  61168  38632 R 99.67 0.188   2:39.53 qemu-system-i38                                                       
> 25325 claudio   20   0   89700   3208   2940 R 52.16 0.010   0:56.05 ide-test       
> 25403 claudio   20   0 1026720  63028  38416 R 99.67 0.194   1:48.63 qemu-system-x86                                                       
> 
> 
> i386 and x86_64 seem to show the exact same behaviour.
> 
> 
> gdb says:
> 
> qemu-system-x86 (25403):
> 
> (gdb) info threads
>   Id   Target Id                                           Frame 
> * 1    Thread 0x7fe35a406140 (LWP 25403) "qemu-system-x86" 0x00007fe35157f7d6 in ppoll () from /lib64/libc.so.6
>   2    Thread 0x7fe33946e700 (LWP 25415) "qemu-system-x86" 0x00007fe351584839 in syscall () from /lib64/libc.so.6
>   3    Thread 0x7fe338c6d700 (LWP 25439) "qemu-system-x86" 0x00007fe35157f6db in poll () from /lib64/libc.so.6
>   4    Thread 0x7fe333fff700 (LWP 25440) "qemu-system-x86" 0x00007fe35185bdcf in do_sigwait () from /lib64/libpthread.so.0
> 
> (gdb) thread 1
> [Switching to thread 1 (Thread 0x7fe35a406140 (LWP 25403))]
> #0  0x00007fe35157f7d6 in ppoll () from /lib64/libc.so.6
> (gdb) bt
> #0  0x00007fe35157f7d6 in ppoll () at /lib64/libc.so.6
> #1  0x000055a1f3138309 in ppoll (__ss=0x0, __timeout=0x7fff64d10b70, __nfds=<optimized out>, __fds=<optimized out>)
>     at /usr/include/bits/poll2.h:77
> #2  0x000055a1f3138309 in qemu_poll_ns (fds=<optimized out>, nfds=<optimized out>, timeout=timeout@entry=27462700)
>     at ../util/qemu-timer.c:349
> #3  0x000055a1f31512a5 in os_host_main_loop_wait (timeout=27462700) at ../util/main-loop.c:239
> #4  0x000055a1f31512a5 in main_loop_wait (nonblocking=nonblocking@entry=0) at ../util/main-loop.c:520
> #5  0x000055a1f2fc4bbd in qemu_main_loop () at ../softmmu/vl.c:1677
> #6  0x000055a1f2d001fe in main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at ../softmmu/main.c:50
> 
> (gdb) thread 2
> [Switching to thread 2 (Thread 0x7fe33946e700 (LWP 25415))]
> #0  0x00007fe351584839 in syscall () from /lib64/libc.so.6
> (gdb) bt
> #0  0x00007fe351584839 in syscall () at /lib64/libc.so.6
> #1  0x000055a1f312605b in qemu_futex_wait (val=<optimized out>, f=<optimized out>)
>     at /home/claudio/git/qemu-pristine/qemu/include/qemu/futex.h:29
> #2  0x000055a1f312605b in qemu_event_wait (ev=ev@entry=0x55a1f3a44208 <rcu_call_ready_event>) at ../util/qemu-thread-posix.c:460
> #3  0x000055a1f314f868 in call_rcu_thread (opaque=opaque@entry=0x0) at ../util/rcu.c:258
> #4  0x000055a1f3125276 in qemu_thread_start (args=<optimized out>) at ../util/qemu-thread-posix.c:521
> #5  0x00007fe3518514f9 in start_thread () at /lib64/libpthread.so.0
> #6  0x00007fe351589fbf in clone () at /lib64/libc.so.6
> (gdb) frame 3
> #3  0x000055a1f314f868 in call_rcu_thread (opaque=opaque@entry=0x0) at ../util/rcu.c:258
> 258                         qemu_event_wait(&rcu_call_ready_event);
> (gdb) list 258
> 253                     n = qatomic_read(&rcu_call_count);
> 254                     if (n == 0) {
> 255     #if defined(CONFIG_MALLOC_TRIM)
> 256                         malloc_trim(4 * 1024 * 1024);
> 257     #endif
> 258                         qemu_event_wait(&rcu_call_ready_event);
> 259                     }
> 260                 }
> 261                 n = qatomic_read(&rcu_call_count);
> 262             }
> 
> 
> (gdb) thread 3
> [Switching to thread 3 (Thread 0x7fe338c6d700 (LWP 25439))]
> #0  0x00007fe35157f6db in poll () from /lib64/libc.so.6
> (gdb) bt
> #0  0x00007fe35157f6db in poll () at /lib64/libc.so.6
> #1  0x00007fe357087779 in  () at /usr/lib64/libglib-2.0.so.0
> #2  0x00007fe357087ac2 in g_main_loop_run () at /usr/lib64/libglib-2.0.so.0
> #3  0x000055a1f2dc1c51 in iothread_run (opaque=opaque@entry=0x55a1f4b20250) at ../iothread.c:80
> #4  0x000055a1f3125276 in qemu_thread_start (args=<optimized out>) at ../util/qemu-thread-posix.c:521
> #5  0x00007fe3518514f9 in start_thread () at /lib64/libpthread.so.0
> #6  0x00007fe351589fbf in clone () at /lib64/libc.so.6
> (gdb) frame 3
> #3  0x000055a1f2dc1c51 in iothread_run (opaque=opaque@entry=0x55a1f4b20250) at ../iothread.c:80
> 80                  g_main_loop_run(iothread->main_loop);
> (gdb) list 80
> 75              /*
> 76               * We must check the running state again in case it was
> 77               * changed in previous aio_poll()
> 78               */
> 79              if (iothread->running && qatomic_read(&iothread->run_gcontext)) {
> 80                  g_main_loop_run(iothread->main_loop);
> 81              }
> 82          }
> 83
> 
> 
> (gdb) thread 4
> [Switching to thread 4 (Thread 0x7fe333fff700 (LWP 25440))]
> #0  0x00007fe35185bdcf in do_sigwait () from /lib64/libpthread.so.0
> (gdb) bt
> #0  0x00007fe35185bdcf in do_sigwait () at /lib64/libpthread.so.0
> #1  0x00007fe35185be5d in sigwait () at /lib64/libpthread.so.0
> #2  0x000055a1f2fd0543 in qtest_cpu_thread_fn (arg=arg@entry=0x55a1f4e84be0) at ../accel/qtest/qtest-cpus.c:59
> #3  0x000055a1f3125276 in qemu_thread_start (args=<optimized out>) at ../util/qemu-thread-posix.c:521
> #4  0x00007fe3518514f9 in start_thread () at /lib64/libpthread.so.0
> #5  0x00007fe351589fbf in clone () at /lib64/libc.so.6
> 
> (gdb) list qtest_cpu_thread_fn 
> 26      #include "hw/core/cpu.h"
> 27
> 28      #include "qtest-cpus.h"
> 29
> 30      static void *qtest_cpu_thread_fn(void *arg)
> 31      {
> 32      #ifdef _WIN32
> 33          error_report("qtest is not supported under Windows");
> 34          exit(1);
> 35      #else
> 36          CPUState *cpu = arg;
> 37          sigset_t waitset;
> 38          int r;
> 39
> 40          rcu_register_thread();
> 41
> 42          qemu_mutex_lock_iothread();
> 43          qemu_thread_get_self(cpu->thread);
> 44          cpu->thread_id = qemu_get_thread_id();
> 45          cpu->can_do_io = 1;
> 46          current_cpu = cpu;
> 47
> 48          sigemptyset(&waitset);
> 49          sigaddset(&waitset, SIG_IPI);
> 50
> 51          /* signal CPU creation */
> 52          cpu_thread_signal_created(cpu);
> 53          qemu_guest_random_seed_thread_part2(cpu->random_seed);
> 54
> 55          do {
> 56              qemu_mutex_unlock_iothread();
> 57              do {
> 58                  int sig;
> 59                  r = sigwait(&waitset, &sig);
> 60              } while (r == -1 && (errno == EAGAIN || errno == EINTR));
> 61              if (r == -1) {
> 62                  perror("sigwait");
> 63                  exit(1);
> 64              }
> 65              qemu_mutex_lock_iothread();
> 66              qemu_wait_io_event(cpu);
> 67          } while (!cpu->unplug);
> 68
> 69          qemu_mutex_unlock_iothread();
> 70          rcu_unregister_thread();
> 71          return NULL;
> 72      #endif
> 73      }
> 74
> 
> ----
> 
> ide-test (25325):
> 
> (gdb) thread 1
> [Switching to thread 1 (Thread 0x7fdce50b81c0 (LWP 25325))]
> #0  0x00007fdce4651deb in write () from /lib64/libpthread.so.0
> (gdb) bt
> #0  0x00007fdce4651deb in write () from /lib64/libpthread.so.0
> #1  0x000055dc0150a3a7 in socket_send (fd=5, buf=0x55dc036b4bd0 "inb 0xc012\n", size=11) at ../tests/qtest/libqtest.c:400
> #2  0x000055dc0150a73b in qtest_sendf (s=s@entry=0x55dc036b4ca0, fmt=fmt@entry=0x55dc015377e3 "%s 0x%x\n") at ../tests/qtest/libqtest.c:424
> #3  0x000055dc0150aeea in qtest_in (s=0x55dc036b4ca0, cmd=<optimized out>, addr=<optimized out>) at ../tests/qtest/libqtest.c:929
> #4  0x000055dc0150c613 in qtest_inb (s=<optimized out>, addr=<optimized out>) at ../tests/qtest/libqtest.c:940
> #5  0x000055dc0150ef08 in qpci_io_readb (dev=<optimized out>, token=..., off=<optimized out>) at ../tests/qtest/libqos/pci.c:283
> #6  0x000055dc015079c2 in send_dma_request (qts=0x55dc036b4ca0, cmd=<optimized out>, sector=0, nb_sectors=1, prdt=<optimized out>, 
>     prdt_entries=<optimized out>, post_exec=0x0) at ../tests/qtest/ide-test.c:283
> #7  0x000055dc0150839c in test_bmdma_trim () at ../tests/qtest/ide-test.c:426
> #8  0x00007fdce4c11826 in ?? () from /usr/lib64/libglib-2.0.so.0
> #9  0x00007fdce4c1173b in ?? () from /usr/lib64/libglib-2.0.so.0
> #10 0x00007fdce4c1173b in ?? () from /usr/lib64/libglib-2.0.so.0
> #11 0x00007fdce4c1173b in ?? () from /usr/lib64/libglib-2.0.so.0
> #12 0x00007fdce4c11ce2 in g_test_run_suite () from /usr/lib64/libglib-2.0.so.0
> #13 0x00007fdce4c11d01 in g_test_run () from /usr/lib64/libglib-2.0.so.0
> #14 0x000055dc01506da6 in main (argc=<optimized out>, argv=<optimized out>) at ../tests/qtest/ide-test.c:1059
> 
> (gdb) thread 2
> [Switching to thread 2 (Thread 0x7fdce3ff9700 (LWP 25327))]
> #0  0x00007fdce437b839 in syscall () from /lib64/libc.so.6
> (gdb) bt
> #0  0x00007fdce437b839 in syscall () from /lib64/libc.so.6
> #1  0x000055dc01528b1b in qemu_futex_wait (val=<optimized out>, f=<optimized out>)
>     at /home/claudio/git/qemu-pristine/qemu/include/qemu/futex.h:29
> #2  qemu_event_wait (ev=ev@entry=0x55dc017566e8 <rcu_call_ready_event>) at ../util/qemu-thread-posix.c:460
> #3  0x000055dc01525c88 in call_rcu_thread (opaque=opaque@entry=0x0) at ../util/rcu.c:258
> #4  0x000055dc01527d36 in qemu_thread_start (args=<optimized out>) at ../util/qemu-thread-posix.c:521
> #5  0x00007fdce46484f9 in start_thread () from /lib64/libpthread.so.0
> #6  0x00007fdce4380fbf in clone () from /lib64/libc.so.6
> 
> ----
> 
> ide-test (22621):
> 
> (gdb) bt
> #0  0x00007f4f9b723e88 in read () from /lib64/libpthread.so.0
> #1  0x00005573ffafb512 in read (__nbytes=1024, __buf=0x7ffdd0be3bf0, __fd=<optimized out>) at /usr/include/bits/unistd.h:44
> #2  qtest_client_socket_recv_line (s=0x55740104fca0) at ../tests/qtest/libqtest.c:472
> #3  0x00005573ffafb7b1 in qtest_rsp (s=s@entry=0x55740104fca0, expected_args=expected_args@entry=2) at ../tests/qtest/libqtest.c:499
> #4  0x00005573ffafbef7 in qtest_in (s=0x55740104fca0, cmd=<optimized out>, addr=<optimized out>) at ../tests/qtest/libqtest.c:930
> #5  0x00005573ffafd613 in qtest_inb (s=<optimized out>, addr=<optimized out>) at ../tests/qtest/libqtest.c:940
> #6  0x00005573ffafff08 in qpci_io_readb (dev=<optimized out>, token=..., off=<optimized out>) at ../tests/qtest/libqos/pci.c:283
> #7  0x00005573ffaf89c2 in send_dma_request (qts=0x55740104fca0, cmd=<optimized out>, sector=0, nb_sectors=1, prdt=<optimized out>, 
>     prdt_entries=<optimized out>, post_exec=0x0) at ../tests/qtest/ide-test.c:283
> #8  0x00005573ffaf939c in test_bmdma_trim () at ../tests/qtest/ide-test.c:426
> #9  0x00007f4f9bce3826 in ?? () from /usr/lib64/libglib-2.0.so.0
> #10 0x00007f4f9bce373b in ?? () from /usr/lib64/libglib-2.0.so.0
> #11 0x00007f4f9bce373b in ?? () from /usr/lib64/libglib-2.0.so.0
> #12 0x00007f4f9bce373b in ?? () from /usr/lib64/libglib-2.0.so.0
> #13 0x00007f4f9bce3ce2 in g_test_run_suite () from /usr/lib64/libglib-2.0.so.0
> #14 0x00007f4f9bce3d01 in g_test_run () from /usr/lib64/libglib-2.0.so.0
> #15 0x00005573ffaf7da6 in main (argc=<optimized out>, argv=<optimized out>) at ../tests/qtest/ide-test.c:1059
> 
> (gdb) thread 2
> [Switching to thread 2 (Thread 0x7f4f9b0cb700 (LWP 22625))]
> #0  0x00007f4f9b44d839 in syscall () from /lib64/libc.so.6
> (gdb) bt
> #0  0x00007f4f9b44d839 in syscall () from /lib64/libc.so.6
> #1  0x00005573ffb19b1b in qemu_futex_wait (val=<optimized out>, f=<optimized out>)
>     at /home/claudio/git/qemu-pristine/qemu/include/qemu/futex.h:29
> #2  qemu_event_wait (ev=ev@entry=0x5573ffd476e8 <rcu_call_ready_event>) at ../util/qemu-thread-posix.c:460
> #3  0x00005573ffb16c88 in call_rcu_thread (opaque=opaque@entry=0x0) at ../util/rcu.c:258
> #4  0x00005573ffb18d36 in qemu_thread_start (args=<optimized out>) at ../util/qemu-thread-posix.c:521
> #5  0x00007f4f9b71a4f9 in start_thread () from /lib64/libpthread.so.0
> #6  0x00007f4f9b452fbf in clone () from /lib64/libc.so.6
> 
> This send_dma_request seems to never end but why..?
> 
> Ciao,
> 
> Claudio
> 

The problem stems from replay changes, in this case it is replay_bh_schedule_event.

The function tests for events_enabled presence inside the implementation, and only if replay events is not enabled it forwards stuff to qemu_bh_schedule().

This is done for other events, including

replay_bh_schedule_event
replay_bh_schedule_oneshot_event
replay_block_event

files like block/blkreplay.c and others should also be made conditional on TCG.

I'll try to sort out this and propose a patch.

Ciao,

Claudio

Re: [RFC v1 3/4] qtest: do not build ide-test if TCG is not available

[Claudio Fontana]

On 10/12/20 12:14 PM, Claudio Fontana wrote:
> On 10/10/20 12:50 PM, Claudio Fontana wrote:
>> On 10/9/20 6:01 PM, Paolo Bonzini wrote:
>>> On 09/10/20 17:21, Claudio Fontana wrote:
>>>> it seems that ide-test depends on TCG currently.
>>>>
>>>> Signed-off-by: Claudio Fontana <cfontana@suse.de>
>>>> ---
>>>>  tests/qtest/meson.build | 2 +-
>>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>>
>>>> diff --git a/tests/qtest/meson.build b/tests/qtest/meson.build
>>>> index ad33ac311d..3418f65e2a 100644
>>>> --- a/tests/qtest/meson.build
>>>> +++ b/tests/qtest/meson.build
>>>> @@ -46,9 +46,9 @@ qtests_i386 = \
>>>>    (config_all_devices.has_key('CONFIG_TPM_TIS_ISA') ? ['tpm-tis-test'] : []) +              \
>>>>    (config_all_devices.has_key('CONFIG_TPM_TIS_ISA') ? ['tpm-tis-swtpm-test'] : []) +        \
>>>>    (config_all_devices.has_key('CONFIG_RTL8139_PCI') ? ['rtl8139-test'] : []) +              \
>>>> +  (config_all.has_key('CONFIG_TCG') ? ['ide-test'] : []) +                                  \
>>>>    qtests_pci +                                                                              \
>>>>    ['fdc-test',
>>>> -   'ide-test',
>>>>     'hd-geo-test',
>>>>     'boot-order-test',
>>>>     'bios-tables-test',
>>>>
>>>
>>> Interesting, why?...
>>>
>>> Paolo
>>>
>>>
>>
>> I am slowly trying to find out. I found out that the qos-test that buzzes is ide-test,
>> and I found out which specific ide test it was by manually bisecting functions inside the qtest_add_func in ide-test.c.
>>
>> The issue seems limited to qtest_add_func("/ide/bmdma/trim", test_bmdma_trim);
>> No idea yet why that test buzzes forever.
>>
>> Side note, maybe more verbose output on which specific test is attempted could be helpful? maybe only enabled on make V=2 ?
>>
>> So the buzz.
>> top says:
>>
>> 22621 claudio   20   0   89700   3292   3004 R 53.82 0.010   1:22.43 ide-test                                                              
>> 22844 claudio   20   0 1026700  61168  38632 R 99.67 0.188   2:39.53 qemu-system-i38                                                       
>> 25325 claudio   20   0   89700   3208   2940 R 52.16 0.010   0:56.05 ide-test       
>> 25403 claudio   20   0 1026720  63028  38416 R 99.67 0.194   1:48.63 qemu-system-x86                                                       
>>
>>
>> i386 and x86_64 seem to show the exact same behaviour.
>>
>>
>> gdb says:
>>
>> qemu-system-x86 (25403):
>>
>> (gdb) info threads
>>   Id   Target Id                                           Frame 
>> * 1    Thread 0x7fe35a406140 (LWP 25403) "qemu-system-x86" 0x00007fe35157f7d6 in ppoll () from /lib64/libc.so.6
>>   2    Thread 0x7fe33946e700 (LWP 25415) "qemu-system-x86" 0x00007fe351584839 in syscall () from /lib64/libc.so.6
>>   3    Thread 0x7fe338c6d700 (LWP 25439) "qemu-system-x86" 0x00007fe35157f6db in poll () from /lib64/libc.so.6
>>   4    Thread 0x7fe333fff700 (LWP 25440) "qemu-system-x86" 0x00007fe35185bdcf in do_sigwait () from /lib64/libpthread.so.0
>>
>> (gdb) thread 1
>> [Switching to thread 1 (Thread 0x7fe35a406140 (LWP 25403))]
>> #0  0x00007fe35157f7d6 in ppoll () from /lib64/libc.so.6
>> (gdb) bt
>> #0  0x00007fe35157f7d6 in ppoll () at /lib64/libc.so.6
>> #1  0x000055a1f3138309 in ppoll (__ss=0x0, __timeout=0x7fff64d10b70, __nfds=<optimized out>, __fds=<optimized out>)
>>     at /usr/include/bits/poll2.h:77
>> #2  0x000055a1f3138309 in qemu_poll_ns (fds=<optimized out>, nfds=<optimized out>, timeout=timeout@entry=27462700)
>>     at ../util/qemu-timer.c:349
>> #3  0x000055a1f31512a5 in os_host_main_loop_wait (timeout=27462700) at ../util/main-loop.c:239
>> #4  0x000055a1f31512a5 in main_loop_wait (nonblocking=nonblocking@entry=0) at ../util/main-loop.c:520
>> #5  0x000055a1f2fc4bbd in qemu_main_loop () at ../softmmu/vl.c:1677
>> #6  0x000055a1f2d001fe in main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at ../softmmu/main.c:50
>>
>> (gdb) thread 2
>> [Switching to thread 2 (Thread 0x7fe33946e700 (LWP 25415))]
>> #0  0x00007fe351584839 in syscall () from /lib64/libc.so.6
>> (gdb) bt
>> #0  0x00007fe351584839 in syscall () at /lib64/libc.so.6
>> #1  0x000055a1f312605b in qemu_futex_wait (val=<optimized out>, f=<optimized out>)
>>     at /home/claudio/git/qemu-pristine/qemu/include/qemu/futex.h:29
>> #2  0x000055a1f312605b in qemu_event_wait (ev=ev@entry=0x55a1f3a44208 <rcu_call_ready_event>) at ../util/qemu-thread-posix.c:460
>> #3  0x000055a1f314f868 in call_rcu_thread (opaque=opaque@entry=0x0) at ../util/rcu.c:258
>> #4  0x000055a1f3125276 in qemu_thread_start (args=<optimized out>) at ../util/qemu-thread-posix.c:521
>> #5  0x00007fe3518514f9 in start_thread () at /lib64/libpthread.so.0
>> #6  0x00007fe351589fbf in clone () at /lib64/libc.so.6
>> (gdb) frame 3
>> #3  0x000055a1f314f868 in call_rcu_thread (opaque=opaque@entry=0x0) at ../util/rcu.c:258
>> 258                         qemu_event_wait(&rcu_call_ready_event);
>> (gdb) list 258
>> 253                     n = qatomic_read(&rcu_call_count);
>> 254                     if (n == 0) {
>> 255     #if defined(CONFIG_MALLOC_TRIM)
>> 256                         malloc_trim(4 * 1024 * 1024);
>> 257     #endif
>> 258                         qemu_event_wait(&rcu_call_ready_event);
>> 259                     }
>> 260                 }
>> 261                 n = qatomic_read(&rcu_call_count);
>> 262             }
>>
>>
>> (gdb) thread 3
>> [Switching to thread 3 (Thread 0x7fe338c6d700 (LWP 25439))]
>> #0  0x00007fe35157f6db in poll () from /lib64/libc.so.6
>> (gdb) bt
>> #0  0x00007fe35157f6db in poll () at /lib64/libc.so.6
>> #1  0x00007fe357087779 in  () at /usr/lib64/libglib-2.0.so.0
>> #2  0x00007fe357087ac2 in g_main_loop_run () at /usr/lib64/libglib-2.0.so.0
>> #3  0x000055a1f2dc1c51 in iothread_run (opaque=opaque@entry=0x55a1f4b20250) at ../iothread.c:80
>> #4  0x000055a1f3125276 in qemu_thread_start (args=<optimized out>) at ../util/qemu-thread-posix.c:521
>> #5  0x00007fe3518514f9 in start_thread () at /lib64/libpthread.so.0
>> #6  0x00007fe351589fbf in clone () at /lib64/libc.so.6
>> (gdb) frame 3
>> #3  0x000055a1f2dc1c51 in iothread_run (opaque=opaque@entry=0x55a1f4b20250) at ../iothread.c:80
>> 80                  g_main_loop_run(iothread->main_loop);
>> (gdb) list 80
>> 75              /*
>> 76               * We must check the running state again in case it was
>> 77               * changed in previous aio_poll()
>> 78               */
>> 79              if (iothread->running && qatomic_read(&iothread->run_gcontext)) {
>> 80                  g_main_loop_run(iothread->main_loop);
>> 81              }
>> 82          }
>> 83
>>
>>
>> (gdb) thread 4
>> [Switching to thread 4 (Thread 0x7fe333fff700 (LWP 25440))]
>> #0  0x00007fe35185bdcf in do_sigwait () from /lib64/libpthread.so.0
>> (gdb) bt
>> #0  0x00007fe35185bdcf in do_sigwait () at /lib64/libpthread.so.0
>> #1  0x00007fe35185be5d in sigwait () at /lib64/libpthread.so.0
>> #2  0x000055a1f2fd0543 in qtest_cpu_thread_fn (arg=arg@entry=0x55a1f4e84be0) at ../accel/qtest/qtest-cpus.c:59
>> #3  0x000055a1f3125276 in qemu_thread_start (args=<optimized out>) at ../util/qemu-thread-posix.c:521
>> #4  0x00007fe3518514f9 in start_thread () at /lib64/libpthread.so.0
>> #5  0x00007fe351589fbf in clone () at /lib64/libc.so.6
>>
>> (gdb) list qtest_cpu_thread_fn 
>> 26      #include "hw/core/cpu.h"
>> 27
>> 28      #include "qtest-cpus.h"
>> 29
>> 30      static void *qtest_cpu_thread_fn(void *arg)
>> 31      {
>> 32      #ifdef _WIN32
>> 33          error_report("qtest is not supported under Windows");
>> 34          exit(1);
>> 35      #else
>> 36          CPUState *cpu = arg;
>> 37          sigset_t waitset;
>> 38          int r;
>> 39
>> 40          rcu_register_thread();
>> 41
>> 42          qemu_mutex_lock_iothread();
>> 43          qemu_thread_get_self(cpu->thread);
>> 44          cpu->thread_id = qemu_get_thread_id();
>> 45          cpu->can_do_io = 1;
>> 46          current_cpu = cpu;
>> 47
>> 48          sigemptyset(&waitset);
>> 49          sigaddset(&waitset, SIG_IPI);
>> 50
>> 51          /* signal CPU creation */
>> 52          cpu_thread_signal_created(cpu);
>> 53          qemu_guest_random_seed_thread_part2(cpu->random_seed);
>> 54
>> 55          do {
>> 56              qemu_mutex_unlock_iothread();
>> 57              do {
>> 58                  int sig;
>> 59                  r = sigwait(&waitset, &sig);
>> 60              } while (r == -1 && (errno == EAGAIN || errno == EINTR));
>> 61              if (r == -1) {
>> 62                  perror("sigwait");
>> 63                  exit(1);
>> 64              }
>> 65              qemu_mutex_lock_iothread();
>> 66              qemu_wait_io_event(cpu);
>> 67          } while (!cpu->unplug);
>> 68
>> 69          qemu_mutex_unlock_iothread();
>> 70          rcu_unregister_thread();
>> 71          return NULL;
>> 72      #endif
>> 73      }
>> 74
>>
>> ----
>>
>> ide-test (25325):
>>
>> (gdb) thread 1
>> [Switching to thread 1 (Thread 0x7fdce50b81c0 (LWP 25325))]
>> #0  0x00007fdce4651deb in write () from /lib64/libpthread.so.0
>> (gdb) bt
>> #0  0x00007fdce4651deb in write () from /lib64/libpthread.so.0
>> #1  0x000055dc0150a3a7 in socket_send (fd=5, buf=0x55dc036b4bd0 "inb 0xc012\n", size=11) at ../tests/qtest/libqtest.c:400
>> #2  0x000055dc0150a73b in qtest_sendf (s=s@entry=0x55dc036b4ca0, fmt=fmt@entry=0x55dc015377e3 "%s 0x%x\n") at ../tests/qtest/libqtest.c:424
>> #3  0x000055dc0150aeea in qtest_in (s=0x55dc036b4ca0, cmd=<optimized out>, addr=<optimized out>) at ../tests/qtest/libqtest.c:929
>> #4  0x000055dc0150c613 in qtest_inb (s=<optimized out>, addr=<optimized out>) at ../tests/qtest/libqtest.c:940
>> #5  0x000055dc0150ef08 in qpci_io_readb (dev=<optimized out>, token=..., off=<optimized out>) at ../tests/qtest/libqos/pci.c:283
>> #6  0x000055dc015079c2 in send_dma_request (qts=0x55dc036b4ca0, cmd=<optimized out>, sector=0, nb_sectors=1, prdt=<optimized out>, 
>>     prdt_entries=<optimized out>, post_exec=0x0) at ../tests/qtest/ide-test.c:283
>> #7  0x000055dc0150839c in test_bmdma_trim () at ../tests/qtest/ide-test.c:426
>> #8  0x00007fdce4c11826 in ?? () from /usr/lib64/libglib-2.0.so.0
>> #9  0x00007fdce4c1173b in ?? () from /usr/lib64/libglib-2.0.so.0
>> #10 0x00007fdce4c1173b in ?? () from /usr/lib64/libglib-2.0.so.0
>> #11 0x00007fdce4c1173b in ?? () from /usr/lib64/libglib-2.0.so.0
>> #12 0x00007fdce4c11ce2 in g_test_run_suite () from /usr/lib64/libglib-2.0.so.0
>> #13 0x00007fdce4c11d01 in g_test_run () from /usr/lib64/libglib-2.0.so.0
>> #14 0x000055dc01506da6 in main (argc=<optimized out>, argv=<optimized out>) at ../tests/qtest/ide-test.c:1059
>>
>> (gdb) thread 2
>> [Switching to thread 2 (Thread 0x7fdce3ff9700 (LWP 25327))]
>> #0  0x00007fdce437b839 in syscall () from /lib64/libc.so.6
>> (gdb) bt
>> #0  0x00007fdce437b839 in syscall () from /lib64/libc.so.6
>> #1  0x000055dc01528b1b in qemu_futex_wait (val=<optimized out>, f=<optimized out>)
>>     at /home/claudio/git/qemu-pristine/qemu/include/qemu/futex.h:29
>> #2  qemu_event_wait (ev=ev@entry=0x55dc017566e8 <rcu_call_ready_event>) at ../util/qemu-thread-posix.c:460
>> #3  0x000055dc01525c88 in call_rcu_thread (opaque=opaque@entry=0x0) at ../util/rcu.c:258
>> #4  0x000055dc01527d36 in qemu_thread_start (args=<optimized out>) at ../util/qemu-thread-posix.c:521
>> #5  0x00007fdce46484f9 in start_thread () from /lib64/libpthread.so.0
>> #6  0x00007fdce4380fbf in clone () from /lib64/libc.so.6
>>
>> ----
>>
>> ide-test (22621):
>>
>> (gdb) bt
>> #0  0x00007f4f9b723e88 in read () from /lib64/libpthread.so.0
>> #1  0x00005573ffafb512 in read (__nbytes=1024, __buf=0x7ffdd0be3bf0, __fd=<optimized out>) at /usr/include/bits/unistd.h:44
>> #2  qtest_client_socket_recv_line (s=0x55740104fca0) at ../tests/qtest/libqtest.c:472
>> #3  0x00005573ffafb7b1 in qtest_rsp (s=s@entry=0x55740104fca0, expected_args=expected_args@entry=2) at ../tests/qtest/libqtest.c:499
>> #4  0x00005573ffafbef7 in qtest_in (s=0x55740104fca0, cmd=<optimized out>, addr=<optimized out>) at ../tests/qtest/libqtest.c:930
>> #5  0x00005573ffafd613 in qtest_inb (s=<optimized out>, addr=<optimized out>) at ../tests/qtest/libqtest.c:940
>> #6  0x00005573ffafff08 in qpci_io_readb (dev=<optimized out>, token=..., off=<optimized out>) at ../tests/qtest/libqos/pci.c:283
>> #7  0x00005573ffaf89c2 in send_dma_request (qts=0x55740104fca0, cmd=<optimized out>, sector=0, nb_sectors=1, prdt=<optimized out>, 
>>     prdt_entries=<optimized out>, post_exec=0x0) at ../tests/qtest/ide-test.c:283
>> #8  0x00005573ffaf939c in test_bmdma_trim () at ../tests/qtest/ide-test.c:426
>> #9  0x00007f4f9bce3826 in ?? () from /usr/lib64/libglib-2.0.so.0
>> #10 0x00007f4f9bce373b in ?? () from /usr/lib64/libglib-2.0.so.0
>> #11 0x00007f4f9bce373b in ?? () from /usr/lib64/libglib-2.0.so.0
>> #12 0x00007f4f9bce373b in ?? () from /usr/lib64/libglib-2.0.so.0
>> #13 0x00007f4f9bce3ce2 in g_test_run_suite () from /usr/lib64/libglib-2.0.so.0
>> #14 0x00007f4f9bce3d01 in g_test_run () from /usr/lib64/libglib-2.0.so.0
>> #15 0x00005573ffaf7da6 in main (argc=<optimized out>, argv=<optimized out>) at ../tests/qtest/ide-test.c:1059
>>
>> (gdb) thread 2
>> [Switching to thread 2 (Thread 0x7f4f9b0cb700 (LWP 22625))]
>> #0  0x00007f4f9b44d839 in syscall () from /lib64/libc.so.6
>> (gdb) bt
>> #0  0x00007f4f9b44d839 in syscall () from /lib64/libc.so.6
>> #1  0x00005573ffb19b1b in qemu_futex_wait (val=<optimized out>, f=<optimized out>)
>>     at /home/claudio/git/qemu-pristine/qemu/include/qemu/futex.h:29
>> #2  qemu_event_wait (ev=ev@entry=0x5573ffd476e8 <rcu_call_ready_event>) at ../util/qemu-thread-posix.c:460
>> #3  0x00005573ffb16c88 in call_rcu_thread (opaque=opaque@entry=0x0) at ../util/rcu.c:258
>> #4  0x00005573ffb18d36 in qemu_thread_start (args=<optimized out>) at ../util/qemu-thread-posix.c:521
>> #5  0x00007f4f9b71a4f9 in start_thread () from /lib64/libpthread.so.0
>> #6  0x00007f4f9b452fbf in clone () from /lib64/libc.so.6
>>
>> This send_dma_request seems to never end but why..?
>>
>> Ciao,
>>
>> Claudio
>>
> 
> The problem stems from replay changes, in this case it is replay_bh_schedule_event.
> 
> The function tests for events_enabled presence inside the implementation, and only if replay events is not enabled it forwards stuff to qemu_bh_schedule().
> 
> This is done for other events, including
> 
> replay_bh_schedule_event
> replay_bh_schedule_oneshot_event
> replay_block_event
> 
> files like block/blkreplay.c and others should also be made conditional on TCG.
> 
> I'll try to sort out this and propose a patch.
> 
> Ciao,
> 
> Claudio
> 
> 

As part of this research I found out that meson does not rebuild always correctly:

I applied this change to block/meson.build:

diff --git a/block/meson.build b/block/meson.build
index 78e8b25232..01fe6f84d2 100644
--- a/block/meson.build
+++ b/block/meson.build
@@ -7,7 +7,6 @@ block_ss.add(files(
   'backup-top.c',
   'blkdebug.c',
   'blklogwrites.c',
-  'blkreplay.c',
   'blkverify.c',
   'block-backend.c',
   'block-copy.c',
@@ -42,6 +41,8 @@ block_ss.add(files(
   'write-threshold.c',
 ), zstd, zlib)
 
+block_ss.add(when: 'CONFIG_TCG', if_true: files('blkreplay.c'))
+
 block_ss.add(when: 'CONFIG_QCOW1', if_true: files('qcow.c'))
 block_ss.add(when: 'CONFIG_VDI', if_true: files('vdi.c'))
 block_ss.add(when: 'CONFIG_CLOOP', if_true: files('cloop.c'))
-----------------------------------------------------------------------------------------


and when typing make -j12, this still tried to build blkreplay.c

Only by wiping out the whole build directory and starting from scratch, the change was considered, and the file build was not attempted.

Ciao,

Claudio