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replay: notify CPU on event

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This patch enables vCPU notification to wake it up
when new async event comes in replay mode.

The motivation of this patch is the following.
Consider recorded block async event. It is saved into the log
with one of the checkpoints. This checkpoint may be passed in
vCPU loop. In replay mode when this async event is read from
the log, and block thread task is not finished yet, vCPU thread
goes to sleep. That is why this patch adds waking up the vCPU
to process this finished event.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Message-Id: <161726519158.1476949.7614181684462079836.stgit@pasha-ThinkPad-X280>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Pavel Dovgalyuk 2021-04-01 11:19:51 +03:00 committed by Paolo Bonzini
parent fe852ac2b3
commit 46967b1a43
1 changed files with 2 additions and 0 deletions
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2
replay/replay-events.c
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@ -15,6 +15,7 @@
#include "replay-internal.h" #include "replay-internal.h"
#include "block/aio.h" #include "block/aio.h"
#include "ui/input.h" #include "ui/input.h"
#include "hw/core/cpu.h"
typedef struct Event { typedef struct Event {
ReplayAsyncEventKind event_kind; ReplayAsyncEventKind event_kind;
@ -126,6 +127,7 @@ void replay_add_event(ReplayAsyncEventKind event_kind,
g_assert(replay_mutex_locked()); g_assert(replay_mutex_locked());
QTAILQ_INSERT_TAIL(&events_list, event, events); QTAILQ_INSERT_TAIL(&events_list, event, events);
qemu_cpu_kick(first_cpu);
} }
void replay_bh_schedule_event(QEMUBH *bh) void replay_bh_schedule_event(QEMUBH *bh)