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| author | Andi Kleen <ak@suse.de> | 2005-07-28 21:15:32 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-28 21:45:59 -0700 |
| commit | a54649b801e5fe69755dc55e6589f7a65af25d79 (patch) | |
| tree | 77245e9b10077b63325972761a711adaa6fa9588 /arch/x86_64/Kconfig | |
| parent | c853cc7e7940a2d6ad66cfe666192516fc06b0e3 (diff) | |
| download | lwn-a54649b801e5fe69755dc55e6589f7a65af25d79.tar.gz lwn-a54649b801e5fe69755dc55e6589f7a65af25d79.zip | |
[PATCH] x86_64: Improve CONFIG_GART_IOMMU description and make it default y
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64/Kconfig')
| -rw-r--r-- | arch/x86_64/Kconfig | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig index 4b8326177c52..660a03a89e66 100644 --- a/arch/x86_64/Kconfig +++ b/arch/x86_64/Kconfig @@ -329,12 +329,15 @@ config HPET_EMULATE_RTC config GART_IOMMU bool "IOMMU support" + default y depends on PCI help - Support the K8 IOMMU. Needed to run systems with more than 4GB of memory + Support the IOMMU. Needed to run systems with more than 3GB of memory properly with 32-bit PCI devices that do not support DAC (Double Address Cycle). The IOMMU can be turned off at runtime with the iommu=off parameter. Normally the kernel will take the right choice by itself. + This option includes a driver for the AMD Opteron/Athlon64 IOMMU + and a software emulation used on some other systems. If unsure, say Y. # need this always enabled with GART_IOMMU for the VIA workaround |