iommu/vt-d: Block PASID attachment to nested domain with dirty tracking

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Kernel lacks dirty tracking support on nested domain attached to PASID,
fails the attachment early if nesting parent domain is dirty tracking
configured, otherwise dirty pages would be lost.

Cc: stable@vger.kernel.org
Fixes: 67f6f56b59 ("iommu/vt-d: Add set_dev_pasid callback for nested domain")
Suggested-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Yi Liu <yi.l.liu@intel.com>
Link: https://lore.kernel.org/r/20260330101108.12594-2-zhenzhong.duan@intel.com
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Fixes: 67f6f56b59 ("iommu/vt-d: Add set_dev_pasid callback for nested  domain")
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

...

This commit is contained in:

Zhenzhong Duan 2026-04-02 14:57:24 +08:00 • committed by Joerg Roedel

parent f338e77383

commit cc5bd898ff

1 changed files with 5 additions and 1 deletions

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drivers/iommu/intel/nested.c

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