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| author |   Rusty Russell <rusty@rustcorp.com.au> | 2008-12-30 09:25:57 -0600 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2008-12-30 09:25:58 +1030 |
| commit | 498af14783935af487d17dbee4ac451783cbc2b7 (patch) | |
| tree | db7a61d88f8eee05e65ac832f571440640299869 /include/linux/virtio_pci.h | |
| parent | virtio: rename 'pagesize' arg to vring_init/vring_size (diff) | |
| download | linux-dev-498af14783935af487d17dbee4ac451783cbc2b7.tar.xz linux-dev-498af14783935af487d17dbee4ac451783cbc2b7.zip | |
virtio: Don't use PAGE_SIZE for vring alignment in virtio_pci.
That doesn't work for non-4k guests which are now appearing.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'include/linux/virtio_pci.h')
| -rw-r--r-- | include/linux/virtio_pci.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/virtio_pci.h b/include/linux/virtio_pci.h index e13d7ebcf576..cd0fd5d181a6 100644 --- a/include/linux/virtio_pci.h +++ b/include/linux/virtio_pci.h @@ -57,4 +57,8 @@ /* How many bits to shift physical queue address written to QUEUE_PFN. * 12 is historical, and due to x86 page size. */ #define VIRTIO_PCI_QUEUE_ADDR_SHIFT 12 + +/* The alignment to use between consumer and producer parts of vring. + * x86 pagesize again. */ +#define VIRTIO_PCI_VRING_ALIGN 4096 #endif |