mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

plugins: add migration blocker

Browse Source 
If the plugin in controlling time there is some state that might be
missing from the plugin tracking it. Migration is unlikely to work in
this case so lets put a migration blocker in to let the user know if
they try.

Suggested-by: Dr. David Alan Gilbert <dave@treblig.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240620152220.2192768-10-alex.bennee@linaro.org>
This commit is contained in:
Alex Bennée 2024-06-20 16:22:17 +01:00
parent 847a65dd76
commit 508036532c
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
plugins/api.c
View File

@ -47,6 +47,8 @@
#include "disas/disas.h"
#include "plugin.h"
#ifndef CONFIG_USER_ONLY
#include "qapi/error.h"
#include "migration/blocker.h"
#include "exec/ram_addr.h"
#include "qemu/plugin-memory.h"
#include "hw/boards.h"
@ -589,11 +591,19 @@ uint64_t qemu_plugin_u64_sum(qemu_plugin_u64 entry)
* Time control
*/
static bool has_control;
#ifdef CONFIG_SOFTMMU
static Error *migration_blocker;
#endif
const void *qemu_plugin_request_time_control(void)
{
if (!has_control) {
has_control = true;
#ifdef CONFIG_SOFTMMU
error_setg(&migration_blocker,
"TCG plugin time control does not support migration");
migrate_add_blocker(&migration_blocker, NULL);
#endif
return &has_control;
}
return NULL;