mirrors/linux-stable
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git synced 2024-10-02 15:18:19 +00:00
Code Issues Releases Wiki Activity

virtio: bugfix

Browse source 
Fixes two obvious bugs in virtio pci.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
 -----BEGIN PGP SIGNATURE-----
 
 iQEcBAABAgAGBQJZoG+uAAoJECgfDbjSjVRpvAMIAIoONNPd53SPKDVuyU1ycz7H
 hRVJ9dgVqsCyJV7UQNXznTkk1Te+todM3eBOnnWGxBUPyyjjn+nRJY8ObzvPZNtr
 GZjBHhuCeWAi1HPcGk3VKFCXB9yzVc7x91YoSZRWRveB1hOoqWCNccuXMlOf1mLC
 AAYMdBR7JH9CTA5v73z0n4XmfDPFja9g5qhv3JxYypzS3IrWglsVV8RFFG94zJys
 qsg3Ys6SdYnC4whdtT0sdj6zcVV3STqLtutUcWzpBJiPwL+TYprOtGxhjhjG/YdP
 vurTYmMk1FZyTlxflfzH0yIRQVZyxARcPGrchhvFv9eE4qN0y4E72FkN8UyyKpU=
 =qTWW
 -----END PGP SIGNATURE-----

Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio fixes from Michael Tsirkin:
 "Fixes two obvious bugs in virtio pci"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio_pci: fix cpu affinity support
  virtio_blk: fix incorrect message when disk is resized
This commit is contained in:
Linus Torvalds 2017-08-25 17:40:03 -07:00
commit 17e34c4fd0
2 changed files with 17 additions and 9 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
drivers/block/virtio_blk.c
View file

@ -381,6 +381,7 @@ static void virtblk_config_changed_work(struct work_struct *work)
struct request_queue *q = vblk->disk->queue;
char cap_str_2[10], cap_str_10[10];
char *envp[] = { "RESIZE=1", NULL };
unsigned long long nblocks;
u64 capacity;
/* Host must always specify the capacity. */
@ -393,16 +394,19 @@ static void virtblk_config_changed_work(struct work_struct *work)
capacity = (sector_t)-1;
}
string_get_size(capacity, queue_logical_block_size(q),
nblocks = DIV_ROUND_UP_ULL(capacity, queue_logical_block_size(q) >> 9);
string_get_size(nblocks, queue_logical_block_size(q),
STRING_UNITS_2, cap_str_2, sizeof(cap_str_2));
string_get_size(capacity, queue_logical_block_size(q),
string_get_size(nblocks, queue_logical_block_size(q),
STRING_UNITS_10, cap_str_10, sizeof(cap_str_10));
dev_notice(&vdev->dev,
"new size: %llu %d-byte logical blocks (%s/%s)\n",
(unsigned long long)capacity,
queue_logical_block_size(q),
cap_str_10, cap_str_2);
"new size: %llu %d-byte logical blocks (%s/%s)\n",
nblocks,
queue_logical_block_size(q),
cap_str_10,
cap_str_2);
set_capacity(vblk->disk, capacity);
revalidate_disk(vblk->disk);

10
drivers/virtio/virtio_pci_common.c
View file

@ -107,6 +107,7 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors,
{
struct virtio_pci_device *vp_dev = to_vp_device(vdev);
const char *name = dev_name(&vp_dev->vdev.dev);
unsigned flags = PCI_IRQ_MSIX;
unsigned i, v;
int err = -ENOMEM;
@ -126,10 +127,13 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors,
GFP_KERNEL))
goto error;
if (desc) {
flags |= PCI_IRQ_AFFINITY;
desc->pre_vectors++; /* virtio config vector */
}
err = pci_alloc_irq_vectors_affinity(vp_dev->pci_dev, nvectors,
nvectors, PCI_IRQ_MSIX |
(desc ? PCI_IRQ_AFFINITY : 0),
desc);
nvectors, flags, desc);
if (err < 0)
goto error;
vp_dev->msix_enabled = 1;