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qcow2: use external virtual timers 

Regular virtual timers are used to emulate timings
related to vCPU and peripheral states. QCOW2 uses timers
to clean the cache. These timers should have external
flag. In the opposite case they affect the execution
and it can't be recorded and replayed.
This patch adds external flag to the timer for qcow2
cache clean.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <161700516327.1141158.8366564693714562536.stgit@pasha-ThinkPad-X280>
Signed-off-by: Max Reitz <mreitz@redhat.com>
master
Pavel Dovgalyuk 2021-03-29 11:06:03 +03:00 committed by Max Reitz
parent d751448d4f
commit ad0ce64279
1 changed files with 4 additions and 3 deletions
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7
block/qcow2.c
View File

@ -840,9 +840,10 @@ static void cache_clean_timer_init(BlockDriverState *bs, AioContext *context)
{
BDRVQcow2State *s = bs->opaque;
if (s->cache_clean_interval > 0) {
s->cache_clean_timer = aio_timer_new(context, QEMU_CLOCK_VIRTUAL,
SCALE_MS, cache_clean_timer_cb,
bs);
s->cache_clean_timer =
aio_timer_new_with_attrs(context, QEMU_CLOCK_VIRTUAL,
SCALE_MS, QEMU_TIMER_ATTR_EXTERNAL,
cache_clean_timer_cb, bs);
timer_mod(s->cache_clean_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL) +
(int64_t) s->cache_clean_interval * 1000);
}