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Commit 480daab4 authored by Rusty Russell's avatar Rusty Russell
Browse files

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: default avatarRusty Russell <rusty@rustcorp.com.au>
parent 99e0b6c8

drivers/virtio/virtio_pci.c

+1 −1
Original line number Diff line number Diff line
@@ -245,7 +245,7 @@ static struct virtqueue *vp_find_vq(struct virtio_device *vdev, unsigned index, 
	}



	/* activate the queue */

	iowrite32(virt_to_phys(info->queue) >> PAGE_SHIFT,

	iowrite32(virt_to_phys(info->queue) >> VIRTIO_PCI_QUEUE_ADDR_SHIFT,

		  vp_dev->ioaddr + VIRTIO_PCI_QUEUE_PFN);



	/* create the vring */

include/linux/virtio_pci.h

+4 −0
Original line number Diff line number Diff line
@@ -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