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Diffstat (limited to 'Documentation/Intel-IOMMU.txt')
| -rw-r--r-- | Documentation/Intel-IOMMU.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/Intel-IOMMU.txt b/Documentation/Intel-IOMMU.txt index aba7722..c232190 100644 --- a/Documentation/Intel-IOMMU.txt +++ b/Documentation/Intel-IOMMU.txt @@ -57,6 +57,11 @@ Graphics Problems? If you encounter issues with graphics devices, you can try adding option intel_iommu=igfx_off to turn off the integrated graphics engine. +If it happens to be a PCI device included in the INCLUDE_ALL Engine, +then try enabling CONFIG_DMAR_GFX_WA to setup a 1-1 map. We hear +graphics drivers may be in process of using DMA api's in the near +future and at that time this option can be yanked out. + Some exceptions to IOVA ----------------------- Interrupt ranges are not address translated, (0xfee00000 - 0xfeefffff). |