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null-aio: Run CB in original AioContext

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AIO callbacks must be called in the originally calling AioContext,
regardless of the BDS’s “main” AioContext.

Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
Message-ID: <20251110154854.151484-19-hreitz@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Hanna Czenczek 2025-11-10 16:48:53 +01:00 • committed by Kevin Wolf
parent 63d15c7aa5
commit f18782a8f5
1 changed files with 3 additions and 4 deletions
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7
block/null.c
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@ -173,18 +173,17 @@ static inline BlockAIOCB *null_aio_common(BlockDriverState *bs,
{
NullAIOCB *acb;
BDRVNullState *s = bs->opaque;
AioContext *ctx = qemu_get_current_aio_context();
acb = qemu_aio_get(&null_aiocb_info, bs, cb, opaque);
/* Only emulate latency after vcpu is running. */
if (s->latency_ns) {
aio_timer_init(bdrv_get_aio_context(bs), &acb->timer,
QEMU_CLOCK_REALTIME, SCALE_NS,
aio_timer_init(ctx, &acb->timer, QEMU_CLOCK_REALTIME, SCALE_NS,
null_timer_cb, acb);
timer_mod_ns(&acb->timer,
qemu_clock_get_ns(QEMU_CLOCK_REALTIME) + s->latency_ns);
} else {
replay_bh_schedule_oneshot_event(bdrv_get_aio_context(bs),
null_bh_cb, acb);
replay_bh_schedule_oneshot_event(ctx, null_bh_cb, acb);
}
return &acb->common;
}