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| author | Joerg Roedel <jroedel@suse.de> | 2021-06-03 15:02:03 +0200 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2021-06-04 16:31:13 +0200 |
| commit | b1e650db2cc4acca6e7c9974f6a2ca232261173a (patch) | |
| tree | 1d41308b3e526c1bd0cc188f49104545211a1914 /Documentation/admin-guide/kernel-parameters.txt | |
| parent | 4b21a503adf597773e4b37db05db0e9b16a81d53 (diff) | |
| download | lwn-b1e650db2cc4acca6e7c9974f6a2ca232261173a.tar.gz lwn-b1e650db2cc4acca6e7c9974f6a2ca232261173a.zip | |
iommu/amd: Add amd_iommu=force_enable option
Add this option to enable the IOMMU on platforms like AMD Stoney,
where the kernel usually disables it because it may cause problems in
some scenarios.
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20210603130203.29016-1-joro@8bytes.org
Diffstat (limited to 'Documentation/admin-guide/kernel-parameters.txt')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index cb89dbdedc46..f6bf4e87df80 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -301,6 +301,9 @@ allowed anymore to lift isolation requirements as needed. This option does not override iommu=pt + force_enable - Force enable the IOMMU on platforms known + to be buggy with IOMMU enabled. Use this + option with care. amd_iommu_dump= [HW,X86-64] Enable AMD IOMMU driver option to dump the ACPI table |