From: Stefano Garzarella <[email protected]>
Commit d152cdd6f6 ("virtio: use virtio accessor to access packed event")
switched using of address_space_read_cached() to virito_lduw_phys_cached()
to access packed descriptor event.
When we used address_space_read_cached(), we needed to call
virtio_tswap16s() to handle the endianess of the field, but
virito_lduw_phys_cached() already handles it internally, so we no longer
need to call virtio_tswap16s() (as the commit had done for `off_wrap`,
but forgot for `flags`).
Fixes: d152cdd6f6 ("virtio: use virtio accessor to access packed event")
Cc: [email protected]
Cc: [email protected]
Reported-by: Xoykie <[email protected]>
Link:
https://lore.kernel.org/qemu-devel/cafu8rb_pjr77zmlsm0unf9xpnxfr_--tjr49f_ex32zbc5o...@mail.gmail.com
Signed-off-by: Stefano Garzarella <[email protected]>
Message-Id: <[email protected]>
Acked-by: Jason Wang <[email protected]>
Reviewed-by: Peter Maydell <[email protected]>
Reviewed-by: Eugenio Pérez <[email protected]>
Reviewed-by: Michael S. Tsirkin <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>
(cherry picked from commit 7aa6492401e95fb296dec7cda81e67d91f6037d7)
Signed-off-by: Michael Tokarev <[email protected]>
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 871674f9be..fd2dfe3a6b 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -322,7 +322,6 @@ static void vring_packed_event_read(VirtIODevice *vdev,
/* Make sure flags is seen before off_wrap */
smp_rmb();
e->off_wrap = virtio_lduw_phys_cached(vdev, cache, off_off);
- virtio_tswap16s(vdev, &e->flags);
}
static void vring_packed_off_wrap_write(VirtIODevice *vdev,
--
2.39.2
