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[Qemu-devel] [RFC PATCH v3 11/30] replay: make safe vmstop at record/rep
From: |
Pavel Dovgalyuk |
Subject: |
[Qemu-devel] [RFC PATCH v3 11/30] replay: make safe vmstop at record/replay |
Date: |
Thu, 11 Jan 2018 11:25:59 +0300 |
User-agent: |
StGit/0.17.1-dirty |
From: Pavel Dovgalyuk <address@hidden>
This patch disables bdrv flush/drain in record/replay mode.
When block request is in the replay queue it cannot be processed
with drain/flush until it is found in the log.
Therefore vm should just stop leaving unfinished operations
in the queue.
Signed-off-by: Pavel Dovgalyuk <address@hidden>
---
cpus.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/cpus.c b/cpus.c
index e8139de..f2ac0f2 100644
--- a/cpus.c
+++ b/cpus.c
@@ -955,9 +955,10 @@ static int do_vm_stop(RunState state)
qapi_event_send_stop(&error_abort);
}
- bdrv_drain_all();
- replay_disable_events();
- ret = bdrv_flush_all();
+ if (!replay_events_enabled()) {
+ bdrv_drain_all();
+ ret = bdrv_flush_all();
+ }
return ret;
}
- [Qemu-devel] [RFC PATCH v3 01/30] hpet: recover timer offset correctly, (continued)
- [Qemu-devel] [RFC PATCH v3 01/30] hpet: recover timer offset correctly, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 02/30] cpu: flush TB cache when loading VMState, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 03/30] This patch adds a condition before overwriting exception_index fields., Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 04/30] block: implement bdrv_snapshot_goto for blkreplay, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 05/30] blkreplay: create temporary overlay for underlaying devices, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 06/30] replay: disable default snapshot for record/replay, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 07/30] replay: fix processing async events, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 08/30] replay: fixed replay_enable_events, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 09/30] replay: fix save/load vm for non-empty queue, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 10/30] replay: added replay log format description, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 11/30] replay: make safe vmstop at record/replay,
Pavel Dovgalyuk <=
- [Qemu-devel] [RFC PATCH v3 12/30] replay: save prior value of the host clock, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 13/30] icount: fixed saving/restoring of icount warp timers, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 14/30] target/arm/arm-powertctl: drop BQL assertions, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 15/30] cpus: push BQL lock to qemu_*_wait_io_event, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 16/30] cpus: only take BQL for sleeping threads, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 17/30] replay/replay.c: bump REPLAY_VERSION again, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 18/30] replay/replay-internal.c: track holding of replay_lock, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 19/30] replay: make locking visible outside replay code, Pavel Dovgalyuk, 2018/01/11
- [Qemu-devel] [RFC PATCH v3 20/30] replay: push replay_mutex_lock up the call tree, Pavel Dovgalyuk, 2018/01/11