diff options
| -rw-r--r-- | arch/x86/Kconfig | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index ee2fb9d37745..c9d2b81ea310 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -756,17 +756,16 @@ config DMI BIOS code. config GART_IOMMU - bool "GART IOMMU support" if EXPERT - default y + bool "Old AMD GART IOMMU support" select SWIOTLB depends on X86_64 && PCI && AMD_NB ---help--- Support for full DMA access of devices with 32bit memory access only on systems with more than 3GB. This is usually needed for USB, sound, many IDE/SATA chipsets and some other devices. - Provides a driver for the AMD Athlon64/Opteron/Turion/Sempron GART - based hardware IOMMU and a software bounce buffer based IOMMU used - on Intel systems and as fallback. + Provides a driver for the older AMD Athlon64/Opteron/Turion/Sempron GART + based hardware IOMMU. + Newer systems typically have a better AMD IOMMU. The code is only active when needed (enough memory and limited device) unless CONFIG_IOMMU_DEBUG or iommu=force is specified too. |
