This is a note to let you know that I've just added the patch titled
virtio_pci: Clear stale cpumask when setting irq affinity
to the 4.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
virtio_pci-clear-stale-cpumask-when-setting-irq-affinity.patch
and it can be found in the queue-4.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 210d150e1f5da506875e376422ba31ead2d49621 Mon Sep 17 00:00:00 2001
From: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
Date: Thu, 4 Jun 2015 16:41:44 +0800
Subject: virtio_pci: Clear stale cpumask when setting irq affinity
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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);
}
Patches currently in stable-queue which might be from jiang.liu@xxxxxxxxxxxxxxx are
queue-4.0/virtio_pci-clear-stale-cpumask-when-setting-irq-affinity.patch
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