diff options
| author | Rusty Russell <rusty@rustcorp.com.au> | 2008-12-30 09:25:56 -0600 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2008-12-30 09:25:57 +1030 |
| commit | 480daab42c4dd74b3c07031ddf9031251c530c77 (patch) | |
| tree | c491b040071be3867aa42942a80435866fbc85cf /include | |
| parent | 99e0b6c8e3f30602383bcfe3f574537a02ee2bea (diff) | |
virtio: Don't use PAGE_SIZE in virtio_pci.c
The virtio PCI devices don't depend on the guest page size. This matters
now PowerPC virtio is gaining ground (they like 64k pages).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'include')
| -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 cdef3574293..e13d7ebcf57 100644 --- a/include/linux/virtio_pci.h +++ b/include/linux/virtio_pci.h @@ -53,4 +53,8 @@ /* Virtio ABI version, this must match exactly */ #define VIRTIO_PCI_ABI_VERSION 0 + +/* 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 #endif |