On 11/11/21 07:38, Jason Wang wrote:
> We used to access packed descriptor flags via
> address_space_{write|read}_cached(). When we hit the cache, memcpy()
> is used which is not an atomic operation which may lead a wrong value
> is read or wrote.
>
> So this patch switches to use virito_{stw|lduw}_phys_cached() to make
> sure the aceess is atomic.
>
> Fixes: 86044b24e865f ("virtio: basic packed virtqueue support")
> Cc: qemu-sta...@nongnu.org
> Signed-off-by: Jason Wang <jasow...@redhat.com>
> ---
> hw/virtio/virtio.c | 11 ++++-------
> 1 file changed, 4 insertions(+), 7 deletions(-)
Reviewed-by: Philippe Mathieu-Daudé <phi...@redhat.com>
