x86, AMD IOMMU: add Kconfig entry

This patch adds the Kconfig entry for the AMD IOMMU driver.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Cc: iommu@lists.linux-foundation.org
Cc: bhavna.sarathy@amd.com
Cc: Sebastian.Biemueller@amd.com
Cc: robert.richter@amd.com
Cc: joro@8bytes.org
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 7 insertions, 0 deletions

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index e0edaaa6920a..5a82f18ab5ed 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -549,6 +549,13 @@ config CALGARY_IOMMU_ENABLED_BY_DEFAULT
           Calgary anyway, pass 'iommu=calgary' on the kernel command line.
           If unsure, say Y.
 
+config AMD_IOMMU
+        bool "AMD IOMMU support"
+        select SWIOTL
+        depends on X86_64 && PCI
+        help
+          Select this to get support for AMD IOMMU hardware in your system.
+
 # need this always selected by IOMMU for the VIA workaround
 config SWIOTLB
         bool