| commit | 2d61ba95034f1abbdec7729d52c740870a5eddb6 | [log] [tgz] |
|---|---|---|
| author | Michael S. Tsirkin <mst@redhat.com> | Sun Oct 25 15:28:53 2009 +0200 |
| committer | Rusty Russell <rusty@rustcorp.com.au> | Thu Oct 29 08:50:37 2009 +1030 |
| tree | ec51d4cba4240af6011f4fabfda06a21532761da | |
| parent | 0b22bd0ba0d500ab40e7673c591c594ec5447342 [diff] |
virtio: order used ring after used index read On SMP guests, reads from the ring might bypass used index reads. This causes guest crashes because host writes to used index to signal ring data readiness. Fix this by inserting rmb before used ring reads. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: stable@kernel.org