vfio/pci: Use the struct file as the handle not the vfio_group

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VFIO PCI does a security check as part of hot reset to prove that the user
has permission to manipulate all the devices that will be impacted by the
reset.

Use a new API vfio_file_has_dev() to perform this security check against
the struct file directly and remove the vfio_group from VFIO PCI.

Since VFIO PCI was the last user of vfio_group_get_external_user() and
vfio_group_put_external_user() remove it as well.

Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/8-v3-f7729924a7ea+25e33-vfio_kvm_no_group_jgg@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>

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This commit is contained in:

Jason Gunthorpe 2022-05-04 16:14:46 -03:00 • committed by Alex Williamson

parent 3e5449d5f9

commit 6a985ae80b

3 changed files with 40 additions and 75 deletions

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42

drivers/vfio/pci/vfio_pci_core.c

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70

drivers/vfio/vfio.c

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3

include/linux/vfio.h

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