forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
45 lines
1.5 KiB
45 lines
1.5 KiB
# SPDX-License-Identifier: GPL-2.0-only |
|
# AMD IOMMU support |
|
config AMD_IOMMU |
|
bool "AMD IOMMU support" |
|
select SWIOTLB |
|
select PCI_MSI |
|
select PCI_ATS |
|
select PCI_PRI |
|
select PCI_PASID |
|
select IOMMU_API |
|
select IOMMU_IOVA |
|
select IOMMU_DMA |
|
select IOMMU_IO_PGTABLE |
|
depends on X86_64 && PCI && ACPI && HAVE_CMPXCHG_DOUBLE |
|
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 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_V2 |
|
tristate "AMD IOMMU Version 2 driver" |
|
depends on AMD_IOMMU |
|
select MMU_NOTIFIER |
|
help |
|
This option enables support for the AMD IOMMUv2 features of the IOMMU |
|
hardware. Select this option if you want to use devices that support |
|
the PCI PRI and PASID interface. |
|
|
|
config AMD_IOMMU_DEBUGFS |
|
bool "Enable AMD IOMMU internals in DebugFS" |
|
depends on AMD_IOMMU && IOMMU_DEBUGFS |
|
help |
|
!!!WARNING!!! !!!WARNING!!! !!!WARNING!!! !!!WARNING!!! |
|
|
|
DO NOT ENABLE THIS OPTION UNLESS YOU REALLY, -REALLY- KNOW WHAT YOU ARE DOING!!! |
|
Exposes AMD IOMMU device internals in DebugFS. |
|
|
|
This option is -NOT- intended for production environments, and should |
|
not generally be enabled.
|
|
|