tree 77245e9b10077b63325972761a711adaa6fa9588
parent c853cc7e7940a2d6ad66cfe666192516fc06b0e3
author Andi Kleen <[EMAIL PROTECTED]> Fri, 29 Jul 2005 11:15:32 -0700
committer Linus Torvalds <[EMAIL PROTECTED]> Fri, 29 Jul 2005 11:45:59 -0700
[PATCH] x86_64: Improve CONFIG_GART_IOMMU description and make it default y
Signed-off-by: Andi Kleen <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
arch/x86_64/Kconfig | 5 ++++-
1 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/x86_64/Kconfig b/arch/x86_64/Kconfig
--- 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
-
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