diff options
| -rw-r--r-- | block/io.c | 28 | ||||
| -rw-r--r-- | cpus.c | 2 |
2 files changed, 28 insertions, 2 deletions
diff --git a/block/io.c b/block/io.c index 4f9ee97c2b..834841142a 100644 --- a/block/io.c +++ b/block/io.c @@ -33,6 +33,7 @@ #include "qapi/error.h" #include "qemu/error-report.h" #include "qemu/main-loop.h" +#include "sysemu/replay.h" #define NOT_DONE 0x7fffffff /* used while emulated sync operation in progress */ @@ -600,6 +601,15 @@ void bdrv_drain_all_begin(void) return; } + /* + * bdrv queue is managed by record/replay, + * waiting for finishing the I/O requests may + * be infinite + */ + if (replay_events_enabled()) { + return; + } + /* AIO_WAIT_WHILE() with a NULL context can only be called from the main * loop AioContext, so make sure we're in the main context. */ assert(qemu_get_current_aio_context() == qemu_get_aio_context()); @@ -629,6 +639,15 @@ void bdrv_drain_all_end(void) BlockDriverState *bs = NULL; int drained_end_counter = 0; + /* + * bdrv queue is managed by record/replay, + * waiting for finishing the I/O requests may + * be endless + */ + if (replay_events_enabled()) { + return; + } + while ((bs = bdrv_next_all_states(bs))) { AioContext *aio_context = bdrv_get_aio_context(bs); @@ -2124,6 +2143,15 @@ int bdrv_flush_all(void) BlockDriverState *bs = NULL; int result = 0; + /* + * bdrv queue is managed by record/replay, + * creating new flush request for stopping + * the VM may break the determinism + */ + if (replay_events_enabled()) { + return result; + } + for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) { AioContext *aio_context = bdrv_get_aio_context(bs); int ret; @@ -1097,7 +1097,6 @@ static int do_vm_stop(RunState state, bool send_stop) } bdrv_drain_all(); - replay_disable_events(); ret = bdrv_flush_all(); return ret; @@ -2181,7 +2180,6 @@ int vm_prepare_start(void) /* We are sending this now, but the CPUs will be resumed shortly later */ qapi_event_send_resume(); - replay_enable_events(); cpu_enable_ticks(); runstate_set(RUN_STATE_RUNNING); vm_state_notify(1, RUN_STATE_RUNNING); |