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| author | Ohad Ben-Cohen <ohad@wizery.com> | 2011-06-05 18:22:18 +0300 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2011-06-21 10:49:29 +0200 |
| commit | 29b68415e335ba9e0eb6057f9405aa4d9c23efe4 (patch) | |
| tree | 76d1a8990ab1e5db5f6860262cb52c186d477925 /drivers/iommu/Kconfig | |
| parent | b10f127e1a4d8cac5414c6e2b152c205b66c9f16 (diff) | |
| download | lwn-29b68415e335ba9e0eb6057f9405aa4d9c23efe4.tar.gz lwn-29b68415e335ba9e0eb6057f9405aa4d9c23efe4.zip | |
x86: amd_iommu: move to drivers/iommu/
This should ease finding similarities with different platforms,
with the intention of solving problems once in a generic framework
which everyone can use.
Compile-tested on x86_64.
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/iommu/Kconfig')
| -rw-r--r-- | drivers/iommu/Kconfig | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index 21a80bfbdb52..9246c5bf25af 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -17,3 +17,32 @@ config MSM_IOMMU config IOMMU_PGTABLES_L2 def_bool y depends on MSM_IOMMU && MMU && SMP && CPU_DCACHE_DISABLE=n + +# AMD IOMMU support +config AMD_IOMMU + bool "AMD IOMMU support" + select SWIOTLB + select PCI_MSI + select PCI_IOV + select IOMMU_API + 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. + +config AMD_IOMMU_STATS + bool "Export AMD IOMMU statistics to debugfs" + depends on AMD_IOMMU + select DEBUG_FS + ---help--- + This option enables code in the AMD IOMMU driver to collect various + statistics about whats happening in the driver and exports that + information to userspace via debugfs. + If unsure, say N. |