diff options
| author | Jason Gunthorpe <jgg@nvidia.com> | 2022-05-04 16:14:43 -0300 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2022-05-13 10:14:20 -0600 |
| commit | a905ad043f32bbb0c35d4325036397f20f30c8a9 (patch) | |
| tree | d6fd0152cfaec5856b36d73d84f729c02e69d9e2 /include/linux/vfio.h | |
| parent | c38ff5b0c373fbbd6a249eb461ffd4ae0f9dbfa0 (diff) | |
vfio: Change vfio_external_check_extension() to vfio_file_enforced_coherent()
Instead of a general extension check change the function into a limited
test if the iommu_domain has enforced coherency, which is the only thing
kvm needs to query.
Make the new op self contained by properly refcounting the container
before touching it.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/5-v3-f7729924a7ea+25e33-vfio_kvm_no_group_jgg@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'include/linux/vfio.h')
| -rw-r--r-- | include/linux/vfio.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/include/linux/vfio.h b/include/linux/vfio.h index df0adecdf1ea..7cc374da4839 100644 --- a/include/linux/vfio.h +++ b/include/linux/vfio.h @@ -139,8 +139,7 @@ int vfio_mig_get_next_state(struct vfio_device *device, extern struct vfio_group *vfio_group_get_external_user(struct file *filep); extern void vfio_group_put_external_user(struct vfio_group *group); extern struct iommu_group *vfio_file_iommu_group(struct file *file); -extern long vfio_external_check_extension(struct vfio_group *group, - unsigned long arg); +extern bool vfio_file_enforced_coherent(struct file *file); #define VFIO_PIN_PAGES_MAX_ENTRIES (PAGE_SIZE/sizeof(unsigned long)) |