From 55a7c066041e7850948d29ed813f62821a9ec046 Mon Sep 17 00:00:00 2001 From: Anthony Liguori Date: Mon, 28 Jan 2008 09:59:59 -0600 Subject: virtio: Use PCI revision field to indicate virtio PCI ABI version As Avi pointed out, as we continue to massage the virtio PCI ABI, we can make things a little more friendly to users by utilizing the PCI revision field to indicate which version of the ABI we're using. This is a hard ABI version and incrementing it will cause the guest driver to break. This is the necessary changes to virtio_pci to support this. Signed-off-by: Anthony Liguori Signed-off-by: Rusty Russell --- include/linux/virtio_pci.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/linux/virtio_pci.h') diff --git a/include/linux/virtio_pci.h b/include/linux/virtio_pci.h index 860eb37..b315165 100644 --- a/include/linux/virtio_pci.h +++ b/include/linux/virtio_pci.h @@ -52,4 +52,6 @@ * configuration space */ #define VIRTIO_PCI_CONFIG 20 +/* Virtio ABI version, this must match exactly */ +#define VIRTIO_PCI_ABI_VERSION 0 #endif -- cgit v1.1