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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 aba7722c2935..c2321903aa09 100644 --- a/Documentation/Intel-IOMMU.txt +++ b/Documentation/Intel-IOMMU.txt | |||
| @@ -57,6 +57,11 @@ Graphics Problems? | |||
| 57 | If you encounter issues with graphics devices, you can try adding | 57 | If you encounter issues with graphics devices, you can try adding |
| 58 | option intel_iommu=igfx_off to turn off the integrated graphics engine. | 58 | option intel_iommu=igfx_off to turn off the integrated graphics engine. |
| 59 | 59 | ||
| 60 | If it happens to be a PCI device included in the INCLUDE_ALL Engine, | ||
| 61 | then try enabling CONFIG_DMAR_GFX_WA to setup a 1-1 map. We hear | ||
| 62 | graphics drivers may be in process of using DMA api's in the near | ||
| 63 | future and at that time this option can be yanked out. | ||
| 64 | |||
| 60 | Some exceptions to IOVA | 65 | Some exceptions to IOVA |
| 61 | ----------------------- | 66 | ----------------------- |
| 62 | Interrupt ranges are not address translated, (0xfee00000 - 0xfeefffff). | 67 | Interrupt ranges are not address translated, (0xfee00000 - 0xfeefffff). |