[lkml]   [2008]   [Jul]   [3]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
Subject[PATCH 1/6] AMD IOMMU: more verbose Kconfig description text
This patch replaces the short description text for AMD IOMMU in Kconfig with a
more verbose one.

Signed-off-by: Joerg Roedel <>
arch/x86/Kconfig | 10 +++++++++-
1 files changed, 9 insertions(+), 1 deletions(-)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index dc6425e..c31047a 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -568,7 +568,15 @@ config AMD_IOMMU
select SWIOTLB
depends on X86_64 && PCI && ACPI
- Select this to get support for AMD IOMMU hardware in your system.
+ With this option you can enable support for AMD IOMMU hardware in
+ your system. An IOMMU is a hardware component which provides
+ remapping of DMA memory accesses from devices. With an AMD IOMMU you
+ can isolate the the DMA memory of different devices and protect the
+ system from misbehaving device drivers or hardware.
+ You can find out if your system has an AMD IOMMU if you look into
+ your BIOS for an option to enable it or if you have an IVRS ACPI
+ table.

# need this always selected by IOMMU for the VIA workaround
config SWIOTLB

 \ /
  Last update: 2008-07-03 19:41    [W:0.065 / U:0.012 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site