iommufd: Add iommufd_lock_obj() around the auto-domains hwpts

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A later patch will require this locking - currently under the ioas mutex
the hwpt can not have a 0 reference and be on the list.

Link: https://lore.kernel.org/r/2-v3-ae9c2975a131+2e1e8-iommufd_hwpt_jgg@nvidia.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

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Jason Gunthorpe 2023-03-01 15:30:19 -04:00

parent 085fcc7eb7

commit 7214c1c85f

1 changed files with 3 additions and 0 deletions

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drivers/iommu/iommufd/device.c

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