| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.0 085/105] virtio_pci: Clear stale cpumask when setting irq affinity | Date | Fri, 19 Jun 2015 13:36:15 -0700 |
| |
4.0-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jiang Liu <jiang.liu@linux.intel.com>
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>
--- drivers/virtio/virtio_pci_common.c | 1 + 1 file changed, 1 insertion(+)
--- 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 if (cpu == -1) irq_set_affinity_hint(irq, NULL); else { + cpumask_clear(mask); cpumask_set_cpu(cpu, mask); irq_set_affinity_hint(irq, mask); }
-- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in Please read the FAQ at http://www.tux.org/lkml/
|