diff options
Diffstat (limited to 'arch/x86/Kconfig')
-rw-r--r-- | arch/x86/Kconfig | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index d1430ef6b4f9..738bdc6b0f8b 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig | |||
@@ -1913,25 +1913,26 @@ config DMAR_DEFAULT_ON | |||
1913 | recommended you say N here while the DMAR code remains | 1913 | recommended you say N here while the DMAR code remains |
1914 | experimental. | 1914 | experimental. |
1915 | 1915 | ||
1916 | config DMAR_GFX_WA | 1916 | config DMAR_BROKEN_GFX_WA |
1917 | def_bool y | 1917 | def_bool n |
1918 | prompt "Support for Graphics workaround" | 1918 | prompt "Workaround broken graphics drivers (going away soon)" |
1919 | depends on DMAR | 1919 | depends on DMAR |
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 |
1923 | option permits the IOMMU driver to set a unity map for | 1923 | option permits the IOMMU driver to set a unity map for |
1924 | all the OS-visible memory. Hence the driver can continue | 1924 | all the OS-visible memory. Hence the driver can continue |
1925 | to use physical addresses for DMA. | 1925 | to use physical addresses for DMA, at least until this |
1926 | option is removed in the 2.6.32 kernel. | ||
1926 | 1927 | ||
1927 | config DMAR_FLOPPY_WA | 1928 | config DMAR_FLOPPY_WA |
1928 | def_bool y | 1929 | def_bool y |
1929 | depends on DMAR | 1930 | depends on DMAR |
1930 | ---help--- | 1931 | ---help--- |
1931 | Floppy disk drivers are know to bypass DMA API calls | 1932 | Floppy disk drivers are known to bypass DMA API calls |
1932 | thereby failing to work when IOMMU is enabled. This | 1933 | thereby failing to work when IOMMU is enabled. This |
1933 | workaround will setup a 1:1 mapping for the first | 1934 | workaround will setup a 1:1 mapping for the first |
1934 | 16M to make floppy (an ISA device) work. | 1935 | 16MiB to make floppy (an ISA device) work. |
1935 | 1936 | ||
1936 | config INTR_REMAP | 1937 | config INTR_REMAP |
1937 | bool "Support for Interrupt Remapping (EXPERIMENTAL)" | 1938 | bool "Support for Interrupt Remapping (EXPERIMENTAL)" |