summaryrefslogtreecommitdiff
path: root/drivers/vfio/Kconfig
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2015-11-14 04:05:32 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2015-11-14 04:05:32 +0300
commit934f98d7e8123892bd9ca8ea08728ee0784e6597 (patch)
tree1a73064970020d945ca5f2c31ce420021b99e94c /drivers/vfio/Kconfig
parentf3996e6ac6e2bd739d8a82cc9acae0653c2d5dca (diff)
parent222e684ca762e9288108fcf852eb5d08cbe10ae3 (diff)
downloadlinux-934f98d7e8123892bd9ca8ea08728ee0784e6597.tar.xz
Merge tag 'vfio-v4.4-rc1' of git://github.com/awilliam/linux-vfio
Pull VFIO updates from Alex Williamson: - Use kernel interfaces for VPD emulation (Alex Williamson) - Platform fix for releasing IRQs (Eric Auger) - Type1 IOMMU always advertises PAGE_SIZE support when smaller mapping sizes are available (Eric Auger) - Platform fixes for incorrectly using copies of structures rather than pointers to structures (James Morse) - Rework platform reset modules, fix leak, and add AMD xgbe reset module (Eric Auger) - Fix vfio_device_get_from_name() return value (Joerg Roedel) - No-IOMMU interface (Alex Williamson) - Fix potential out of bounds array access in PCI config handling (Dan Carpenter) * tag 'vfio-v4.4-rc1' of git://github.com/awilliam/linux-vfio: vfio/pci: make an array larger vfio: Include No-IOMMU mode vfio: Fix bug in vfio_device_get_from_name() VFIO: platform: reset: AMD xgbe reset module vfio: platform: reset: calxedaxgmac: fix ioaddr leak vfio: platform: add dev_info on device reset vfio: platform: use list of registered reset function vfio: platform: add compat in vfio_platform_device vfio: platform: reset: calxedaxgmac: add reset function registration vfio: platform: introduce module_vfio_reset_handler macro vfio: platform: add capability to register a reset function vfio: platform: introduce vfio-platform-base module vfio/platform: store mapped memory in region, instead of an on-stack copy vfio/type1: handle case where IOMMU does not support PAGE_SIZE size VFIO: platform: clear IRQ_NOAUTOEN when de-assigning the IRQ vfio/pci: Use kernel VPD access functions vfio: Whitelist PCI bridges
Diffstat (limited to 'drivers/vfio/Kconfig')
-rw-r--r--drivers/vfio/Kconfig15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/vfio/Kconfig b/drivers/vfio/Kconfig
index 850d86ca685b..da6e2ce77495 100644
--- a/drivers/vfio/Kconfig
+++ b/drivers/vfio/Kconfig
@@ -31,6 +31,21 @@ menuconfig VFIO
If you don't know what to do here, say N.
+menuconfig VFIO_NOIOMMU
+ bool "VFIO No-IOMMU support"
+ depends on VFIO
+ help
+ VFIO is built on the ability to isolate devices using the IOMMU.
+ Only with an IOMMU can userspace access to DMA capable devices be
+ considered secure. VFIO No-IOMMU mode enables IOMMU groups for
+ devices without IOMMU backing for the purpose of re-using the VFIO
+ infrastructure in a non-secure mode. Use of this mode will result
+ in an unsupportable kernel and will therefore taint the kernel.
+ Device assignment to virtual machines is also not possible with
+ this mode since there is no IOMMU to provide DMA translation.
+
+ If you don't know what to do here, say N.
+
source "drivers/vfio/pci/Kconfig"
source "drivers/vfio/platform/Kconfig"
source "virt/lib/Kconfig"