diff options
| author | Yi Liu <yi.l.liu@intel.com> | 2023-07-18 06:55:28 -0700 |
|---|---|---|
| committer | Alex Williamson <alex.williamson@redhat.com> | 2023-07-25 10:18:28 -0600 |
| commit | 34aeeecdb3357f9ca5aea549525a17790d1c427d (patch) | |
| tree | ae473844ad815720d5fee8db5f2d3361c5e17982 /drivers/vfio/vfio.h | |
| parent | b1a59be8a2b64d00409dc7c9d523572ed32bcff8 (diff) | |
vfio: Accept vfio device file in the KVM facing kAPI
This makes the vfio file kAPIs to accept vfio device files, also a
preparation for vfio device cdev support.
For the kvm set with vfio device file, kvm pointer is stored in struct
vfio_device_file, and use kvm_ref_lock to protect kvm set and kvm
pointer usage within VFIO. This kvm pointer will be set to vfio_device
after device file is bound to iommufd in the cdev path.
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Tested-by: Terrence Xu <terrence.xu@intel.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Matthew Rosato <mjrosato@linux.ibm.com>
Tested-by: Yanting Jiang <yanting.jiang@intel.com>
Tested-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Tested-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Link: https://lore.kernel.org/r/20230718135551.6592-4-yi.l.liu@intel.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'drivers/vfio/vfio.h')
| -rw-r--r-- | drivers/vfio/vfio.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/vfio/vfio.h b/drivers/vfio/vfio.h index b1e327a85a32..332528af0846 100644 --- a/drivers/vfio/vfio.h +++ b/drivers/vfio/vfio.h @@ -18,6 +18,9 @@ struct vfio_container; struct vfio_device_file { struct vfio_device *device; + + spinlock_t kvm_ref_lock; /* protect kvm field */ + struct kvm *kvm; }; void vfio_device_put_registration(struct vfio_device *device); |