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>

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index e0edaaa6920af63832979a04d4f525acafe64e8a..5a82f18ab5edecba7a07c6d65e776d1396ed5c27 100644 (file)
--- 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