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iommu/amd: Honor IVINFO[PAsize] for paging domains

Ankit Soni linux-iommu lkml 1 version New

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  1. v1 Latest2 patches 0 repliesNew

Patches in v1 No applies recorded yet

#Subject and filesSizeRepliesApplied
1/2iommu/amd: Move page-table setup into init_pgtable_params()drivers/iommu/amd/init.c+47 -410 replies
2/2iommu/amd: Adhere to IVINFO[PAsize] for output address limitsdrivers/iommu/amd/amd_iommu.h drivers/iommu/amd/amd_iommu_types.h drivers/iommu/amd/init.c +1 more+12 -30 replies

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Cover letter [PATCH 0/2] iommu/amd: Honor IVINFO[PAsize] for paging domains

The AMD IOMMU driver hardcodes a 52-bit output address size when it creates paging domains. This series honors the PAsize reported in ACPI IVRS IVinfo instead, so maps cannot exceed what firmware or a VM advertises. Patch 1 moves page-table setup into init_pgtable_params() after the IVHD walk, with no functional change intended. Patch 2 uses that helper for PAsize and applies it to paging domains.

Ankit Soni (2):
iommu/amd: Move page-table setup into init_pgtable_params() iommu/amd: Adhere to IVINFO[PAsize] for output address limits

 drivers/iommu/amd/amd_iommu.h       |  1 +
 drivers/iommu/amd/amd_iommu_types.h |  1 +
 drivers/iommu/amd/init.c            | 95 ++++++++++++++++-------------
 drivers/iommu/amd/iommu.c           |  4 +-
 4 files changed, 58 insertions(+), 43 deletions(-)

base-commit: 90201351a862182bdabfc1ad1c97b1e1b6ed5931

Signature · 1 line
2.43.0

Read the cover letter in its thread