diff options
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index c07f7220590..738bdc6b0f8 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1913,6 +1913,18 @@ config DMAR_DEFAULT_ON recommended you say N here while the DMAR code remains experimental. +config DMAR_BROKEN_GFX_WA + def_bool n + prompt "Workaround broken graphics drivers (going away soon)" + depends on DMAR + ---help--- + Current Graphics drivers tend to use physical address + for DMA and avoid using DMA APIs. Setting this config + option permits the IOMMU driver to set a unity map for + all the OS-visible memory. Hence the driver can continue + to use physical addresses for DMA, at least until this + option is removed in the 2.6.32 kernel. + config DMAR_FLOPPY_WA def_bool y depends on DMAR |