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vfio-iommufd: No need to record iommufd_ctx in vfio_device

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iommufd_ctx is stored in vfio_device for emulated devices per bind_iommufd.
However, as iommufd_access is created in bind, no more need to stored it
since iommufd_access implicitly stores it.

Link: https://lore.kernel.org/r/20230327093351.44505-4-yi.l.liu@intel.com
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Tested-by: Terrence Xu <terrence.xu@intel.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Yi Liu
2023-03-27 02:33:48 -07:00
committed by Jason Gunthorpe
parent 54b47585db
commit 4508a533fc
2 changed files with 1 additions and 8 deletions
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8
drivers/vfio/iommufd.c
View File

@@ -142,14 +142,10 @@ int vfio_iommufd_emulated_bind(struct vfio_device *vdev,
lockdep_assert_held(&vdev->dev_set->lock);
iommufd_ctx_get(ictx);
user = iommufd_access_create(ictx, &vfio_user_ops, vdev);
if (IS_ERR(user)) {
iommufd_ctx_put(ictx);
if (IS_ERR(user))
return PTR_ERR(user);
}
vdev->iommufd_access = user;
vdev->iommufd_ictx = ictx;
return 0;
}
EXPORT_SYMBOL_GPL(vfio_iommufd_emulated_bind);
@@ -163,8 +159,6 @@ void vfio_iommufd_emulated_unbind(struct vfio_device *vdev)
vdev->iommufd_attached = false;
vdev->iommufd_access = NULL;
}
iommufd_ctx_put(vdev->iommufd_ictx);
vdev->iommufd_ictx = NULL;
}
EXPORT_SYMBOL_GPL(vfio_iommufd_emulated_unbind);

1
include/linux/vfio.h
View File

@@ -60,7 +60,6 @@ struct vfio_device {
void (*put_kvm)(struct kvm *kvm);
#if IS_ENABLED(CONFIG_IOMMUFD)
struct iommufd_device *iommufd_device;
struct iommufd_ctx *iommufd_ictx;
bool iommufd_attached;
#endif
};