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authorJiang Liu <jiang.liu@linux.intel.com>2015-06-04 16:41:44 +0800
committerMichael S. Tsirkin <mst@redhat.com>2015-06-04 14:47:49 +0200
commit210d150e1f5da506875e376422ba31ead2d49621 (patch)
tree7922be7bde9ecd9380de4973bad251833d957c7c /drivers/virtio
parent8a7b19d8b542b87bccc3eaaf81dcc90a5ca48aea (diff)
downloadop-kernel-dev-210d150e1f5da506875e376422ba31ead2d49621.zip
op-kernel-dev-210d150e1f5da506875e376422ba31ead2d49621.tar.gz
virtio_pci: Clear stale cpumask when setting irq affinity
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. Cc: stable@vger.kernel.org Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/virtio')
-rw-r--r--drivers/virtio/virtio_pci_common.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c
index e894eb2..eba1b7a 100644
--- a/drivers/virtio/virtio_pci_common.c
+++ b/drivers/virtio/virtio_pci_common.c
@@ -423,6 +423,7 @@ 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);
}
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