iommufd: Lock all IOAS objects

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Define helpers to lock and unlock all IOAS objects.
This will allow DMA mappings to be updated atomically during live update.
This code is substantially the same as an initial version provided by
Jason, plus fixes.

Link: https://patch.msgid.link/r/1731527497-16091-3-git-send-email-steven.sistare@oracle.com
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

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Steve Sistare 2024-11-13 11:51:35 -08:00 • committed by Jason Gunthorpe

parent 10caa8b451

commit 051ae5aa73

3 changed files with 67 additions and 0 deletions

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65

drivers/iommu/iommufd/ioas.c

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1

drivers/iommu/iommufd/iommufd_private.h

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1

drivers/iommu/iommufd/main.c

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