iommu/amd: Implement global identity domain

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Implement global identity domain. All device groups in identity domain
will share this domain.

In attach device path, based on device capability it will allocate per
device domain ID and GCR3 table. So that it can support SVA.

Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20241028093810.5901-11-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

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Vasant Hegde 2024-10-28 09:38:08 +00:00 • committed by Joerg Roedel

parent ce2cd17546

commit 4402f2627d

3 changed files with 36 additions and 4 deletions

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1

drivers/iommu/amd/amd_iommu.h

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3

drivers/iommu/amd/init.c

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36

drivers/iommu/amd/iommu.c

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