diff options
| author | Jason Gunthorpe <jgg@nvidia.com> | 2025-11-07 13:41:17 -0400 |
|---|---|---|
| committer | Alex Williamson <alex@shazbot.org> | 2025-11-12 14:58:23 -0700 |
| commit | 113557b0406818a8a5df3479b0a89125d2b2a04c (patch) | |
| tree | 975e048af935089042fa23b91c706d6e53f9500b /include | |
| parent | 0ed3a30fd996cb0cac872432cf25185fda7e5316 (diff) | |
vfio: Provide a get_region_info op
Instead of hooking the general ioctl op, have the core code directly
decode VFIO_DEVICE_GET_REGION_INFO and call an op just for it.
This is intended to allow mechanical changes to the drivers to pull their
VFIO_DEVICE_GET_REGION_INFO int oa function. Later patches will improve
the function signature to consolidate more code.
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Pranjal Shrivastava <praan@google.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/1-v2-2a9e24d62f1b+e10a-vfio_get_region_info_op_jgg@nvidia.com
Signed-off-by: Alex Williamson <alex@shazbot.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/vfio.h | 2 | ||||
| -rw-r--r-- | include/linux/vfio_pci_core.h | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/vfio.h b/include/linux/vfio.h index eb563f538dee..be5fcf8432e8 100644 --- a/include/linux/vfio.h +++ b/include/linux/vfio.h @@ -132,6 +132,8 @@ struct vfio_device_ops { size_t count, loff_t *size); long (*ioctl)(struct vfio_device *vdev, unsigned int cmd, unsigned long arg); + int (*get_region_info)(struct vfio_device *vdev, + struct vfio_region_info __user *arg); int (*mmap)(struct vfio_device *vdev, struct vm_area_struct *vma); void (*request)(struct vfio_device *vdev, unsigned int count); int (*match)(struct vfio_device *vdev, char *buf); diff --git a/include/linux/vfio_pci_core.h b/include/linux/vfio_pci_core.h index f541044e42a2..160bc2e31ece 100644 --- a/include/linux/vfio_pci_core.h +++ b/include/linux/vfio_pci_core.h @@ -115,6 +115,8 @@ long vfio_pci_core_ioctl(struct vfio_device *core_vdev, unsigned int cmd, unsigned long arg); int vfio_pci_core_ioctl_feature(struct vfio_device *device, u32 flags, void __user *arg, size_t argsz); +int vfio_pci_ioctl_get_region_info(struct vfio_device *core_vdev, + struct vfio_region_info __user *arg); ssize_t vfio_pci_core_read(struct vfio_device *core_vdev, char __user *buf, size_t count, loff_t *ppos); ssize_t vfio_pci_core_write(struct vfio_device *core_vdev, const char __user *buf, |