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virtio-rng: stop virtqueue while the CPU is stopped

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If we modify the virtio-rng virqueue while the
vmstate is already migrated we can have some
inconsistencies between the virtqueue state and
the memory content.

To avoid this, stop the virtqueue while the CPU
is stopped.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by:  Amit Shah <amit@kernel.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
This commit is contained in:
Laurent Vivier 2017-04-12 15:53:12 +02:00 • committed by Juan Quintela
parent e8199e4895
commit a23a6d1839
3 changed files with 30 additions and 8 deletions
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2
include/hw/virtio/virtio-rng.h
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@ -45,6 +45,8 @@ typedef struct VirtIORNG {
QEMUTimer *rate_limit_timer;
int64_t quota_remaining;
bool activate_timer;
VMChangeStateEntry *vmstate;
} VirtIORNG;
#endif