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| author | Jiang Liu <jiang.liu@linux.intel.com> | 2015-06-04 16:41:44 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-06-22 17:03:34 -0700 |
| commit | 4c4a45ac04e8fcd6a26ece35c7ec563568c3cacd (patch) | |
| tree | d1bd7fe0167e4d56f507e6741981ce6168077e25 | |
| parent | e3bb98bb03148547bdd76d31ae1e275ae7942dec (diff) | |
| download | lwn-4c4a45ac04e8fcd6a26ece35c7ec563568c3cacd.tar.gz lwn-4c4a45ac04e8fcd6a26ece35c7ec563568c3cacd.zip | |
virtio_pci: Clear stale cpumask when setting irq affinity
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@linux.intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/virtio/virtio_pci_common.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c index e894eb278d83..eba1b7ac7294 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); } |