3.13.11-ckt23 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
commit 210d150e1f5da506875e376422ba31ead2d49621 upstream.
The cpumask vp_dev->msix_affinity_masks[info->msix_vector] may contain
staled information when vp_set_vq_affinity() gets called, so clear it
before setting the new cpu bit mask.
Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
[ luis: backported to 3.16:
- file rename: virtio_pci_common.c -> virtio_pci.c ]
Signed-off-by: Luis Henriques <luis.henriques@xxxxxxxxxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
---
drivers/virtio/virtio_pci.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index 6b35f925..9aa37a7 100644
--- a/drivers/virtio/virtio_pci.c
+++ b/drivers/virtio/virtio_pci.c
@@ -647,6 +647,7 @@ static int vp_set_vq_affinity(struct virtqueue *vq, int cpu)
if (cpu == -1)
irq_set_affinity_hint(irq, NULL);
else {
+ cpumask_clear(mask);
cpumask_set_cpu(cpu, mask);
irq_set_affinity_hint(irq, mask);
}
--
1.9.1
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