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| author | Michael S. Tsirkin <mst@redhat.com> | 2009-10-25 15:28:53 +0200 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2009-10-29 08:50:37 +1030 |
| commit | 2d61ba95034f1abbdec7729d52c740870a5eddb6 (patch) | |
| tree | ec51d4cba4240af6011f4fabfda06a21532761da /kernel/ptrace.c | |
| parent | 0b22bd0ba0d500ab40e7673c591c594ec5447342 (diff) | |
| download | op-kernel-dev-2d61ba95034f1abbdec7729d52c740870a5eddb6.zip op-kernel-dev-2d61ba95034f1abbdec7729d52c740870a5eddb6.tar.gz | |
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
Diffstat (limited to 'kernel/ptrace.c')
0 files changed, 0 insertions, 0 deletions
