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Subject[PATCH 1/6] AMD IOMMU: more verbose Kconfig description text
Date
This patch replaces the short description text for AMD IOMMU in Kconfig with a
more verbose one.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
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
help
- 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
--
1.5.3.7



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