iommu_pt: support small VA for AMDv1

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When hardware/VM request a small VA limit, the generic page-table code
clears PT_FEAT_DYNAMIC_TOP. This later causes domain initialization to
fail with -EOPNOTSUPP.

Remove the clearing so init succeeds when the VA fits in the starting
level and no top-level growth is needed.

Signed-off-by: Ankit Soni <Ankit.Soni@amd.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

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Ankit Soni 2026-04-13 14:45:19 +00:00 • committed by Joerg Roedel

parent 04f1f4bf30

commit 5240dab55b

1 changed files with 0 additions and 4 deletions

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drivers/iommu/generic_pt/iommu_pt.h

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