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| author | Vasant Hegde <vasant.hegde@amd.com> | 2022-08-25 06:39:39 +0000 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2022-09-07 16:12:37 +0200 |
| commit | d799a183da39ac4988b62da8978950efa177ba9f (patch) | |
| tree | fed5bc52f405806d2e7f044d33270495db665140 /Documentation/admin-guide/kernel-parameters.txt | |
| parent | 4db6c41f09469ab8ca5d30f5d4731f299d25ff1c (diff) | |
| download | lwn-d799a183da39ac4988b62da8978950efa177ba9f.tar.gz lwn-d799a183da39ac4988b62da8978950efa177ba9f.zip | |
iommu/amd: Add command-line option to enable different page table
Enhance amd_iommu command line option to specify v1 or v2 page table.
By default system will boot in V1 page table mode.
Co-developed-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Vasant Hegde <vasant.hegde@amd.com>
Link: https://lore.kernel.org/r/20220825063939.8360-10-vasant.hegde@amd.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'Documentation/admin-guide/kernel-parameters.txt')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 426fa892d311..f45c8fc2056c 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -321,6 +321,8 @@ force_enable - Force enable the IOMMU on platforms known to be buggy with IOMMU enabled. Use this option with care. + pgtbl_v1 - Use v1 page table for DMA-API (Default). + pgtbl_v2 - Use v2 page table for DMA-API. amd_iommu_dump= [HW,X86-64] Enable AMD IOMMU driver option to dump the ACPI table |