git.ipfire.org Git - thirdparty/kernel/linux.git/commit

author	Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
	Thu, 15 Jan 2026 06:08:10 +0000 (06:08 +0000)
committer	Joerg Roedel <joerg.roedel@amd.com>
	Sun, 18 Jan 2026 09:56:13 +0000 (10:56 +0100)
commit	774180a74abc89fd1389f51a6f93dbfcded365c2
tree	a89b0215c510a68b1efe143277b70bf19c184628	tree
parent	e113a72576d6056aa91925beaa7256533a808750	commit \| diff

iommu/amd: Add support for nested domain allocation

The nested domain is allocated with IOMMU_DOMAIN_NESTED type to store
stage-1 translation (i.e. GVA->GPA). This includes the GCR3 root pointer
table along with guest page tables. The struct iommu_hwpt_amd_guest
contains this information, and is passed from user-space as a parameter
of the struct iommu_ops.domain_alloc_nested().

Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

drivers/iommu/amd/Makefile		diff \| blob \| blame \| history
drivers/iommu/amd/amd_iommu.h		diff \| blob \| blame \| history
drivers/iommu/amd/amd_iommu_types.h		diff \| blob \| blame \| history
drivers/iommu/amd/nested.c	[new file with mode: 0644]	blob