diff options
-rw-r--r-- | Documentation/Intel-IOMMU.txt | 6 | ||||
-rw-r--r-- | arch/x86/Kconfig | 2 |
2 files changed, 2 insertions, 6 deletions
diff --git a/Documentation/Intel-IOMMU.txt b/Documentation/Intel-IOMMU.txt index 21bc416d887e..cf9431db8731 100644 --- a/Documentation/Intel-IOMMU.txt +++ b/Documentation/Intel-IOMMU.txt | |||
@@ -56,11 +56,7 @@ Graphics Problems? | |||
56 | ------------------ | 56 | ------------------ |
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 | If this fixes anything, please ensure you file a bug reporting the problem. | |
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 | ||
65 | Some exceptions to IOVA | 61 | Some exceptions to IOVA |
66 | ----------------------- | 62 | ----------------------- |
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 738bdc6b0f8b..22a0fd132112 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig | |||
@@ -1916,7 +1916,7 @@ config DMAR_DEFAULT_ON | |||
1916 | config DMAR_BROKEN_GFX_WA | 1916 | config DMAR_BROKEN_GFX_WA |
1917 | def_bool n | 1917 | def_bool n |
1918 | prompt "Workaround broken graphics drivers (going away soon)" | 1918 | prompt "Workaround broken graphics drivers (going away soon)" |
1919 | depends on DMAR | 1919 | depends on DMAR && BROKEN |
1920 | ---help--- | 1920 | ---help--- |
1921 | Current Graphics drivers tend to use physical address | 1921 | Current Graphics drivers tend to use physical address |
1922 | for DMA and avoid using DMA APIs. Setting this config | 1922 | for DMA and avoid using DMA APIs. Setting this config |