diff options
| author | Jason Gunthorpe <jgg@nvidia.com> | 2025-10-23 15:22:34 -0300 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2025-11-05 09:50:19 +0100 |
| commit | 1978fac28168bc3e6a66afb9c41ec0f1e8dafa0f (patch) | |
| tree | c9163b57f462ef833e49e9f8f5b4ba263088acde | |
| parent | 5448c1558f60d4051c90938f2878c6fb20e2982a (diff) | |
iommupt/x86: Set the dirty bit only for writable PTEs
AMD and VTD are historically different here, adopt the VTD version of
setting the D bit only on writable PTEs as it makes more sense.
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| -rw-r--r-- | drivers/iommu/generic_pt/fmt/x86_64.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/iommu/generic_pt/fmt/x86_64.h b/drivers/iommu/generic_pt/fmt/x86_64.h index 18d736d14b2d..7d01370e4ab0 100644 --- a/drivers/iommu/generic_pt/fmt/x86_64.h +++ b/drivers/iommu/generic_pt/fmt/x86_64.h @@ -192,9 +192,9 @@ static inline int x86_64_pt_iommu_set_prot(struct pt_common *common, { u64 pte; - pte = X86_64_FMT_U | X86_64_FMT_A | X86_64_FMT_D; + pte = X86_64_FMT_U | X86_64_FMT_A; if (iommu_prot & IOMMU_WRITE) - pte |= X86_64_FMT_RW; + pte |= X86_64_FMT_RW | X86_64_FMT_D; /* * Ideally we'd have an IOMMU_ENCRYPTED flag set by higher levels to |