From 3503895788d402d6a3814085ed582c364ec3e903 Mon Sep 17 00:00:00 2001 From: "Michael S. Tsirkin" Date: Tue, 31 Oct 2023 12:02:06 -0400 Subject: virtio_pci: move structure to a header These are guest/host interfaces, so they belong in the header where e.g. qemu will know to find them. Note: we added a new structure as opposed to extending existing one because someone might be relying on the size of the existing structure staying unchanged. Add a warning to avoid using sizeof. Signed-off-by: Michael S. Tsirkin Reviewed-by: Xuan Zhuo --- include/uapi/linux/virtio_pci.h | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'include/uapi/linux') diff --git a/include/uapi/linux/virtio_pci.h b/include/uapi/linux/virtio_pci.h index f703afc7ad31..44f4dd2add18 100644 --- a/include/uapi/linux/virtio_pci.h +++ b/include/uapi/linux/virtio_pci.h @@ -166,6 +166,17 @@ struct virtio_pci_common_cfg { __le32 queue_used_hi; /* read-write */ }; +/* + * Warning: do not use sizeof on this: use offsetofend for + * specific fields you need. + */ +struct virtio_pci_modern_common_cfg { + struct virtio_pci_common_cfg cfg; + + __le16 queue_notify_data; /* read-write */ + __le16 queue_reset; /* read-write */ +}; + /* Fields in VIRTIO_PCI_CAP_PCI_CFG: */ struct virtio_pci_cfg_cap { struct virtio_pci_cap cap; -- cgit