x86, AMD IOMMU: do runtime list initialization at compile time

[pandora-kernel.git] / arch / x86 / Kconfig

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 52e18e6..b120cff 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -383,6 +383,7 @@ config VMI
 config KVM_CLOCK
        bool "KVM paravirtualized clock"
        select PARAVIRT
+       select PARAVIRT_CLOCK
        depends on !(X86_VISWS || X86_VOYAGER)
        help
          Turning on this option will allow you to run a paravirtualized clock
@@ -410,6 +411,10 @@ config PARAVIRT
          over full virtualization.  However, when run without a hypervisor
          the kernel is theoretically slower and slightly larger.
 
+config PARAVIRT_CLOCK
+       bool
+       default n
+
 endif
 
 config MEMTEST_BOOTPARAM
@@ -544,6 +549,21 @@ 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 SWIOTLB
+       depends on X86_64 && PCI && ACPI
+       help
+         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
        bool