Peng Fan 9698cbf0be vfio: platform: support No-IOMMU mode ... The vfio No-IOMMU mode was supported by this 'commit 03a76b60f8 ("vfio: Include No-IOMMU mode")', but it only support vfio-pci. Using vfio_iommu_group_get/put, but not iommu_group_get/put, the platform devices can be exposed to userspace with CONFIG_VFIO_NOIOMMU and the "enable_unsafe_noiommu_mode" option enabled. From 'commit 03a76b60f8 ("vfio: Include No-IOMMU mode")', "This should make it very clear that this mode is not safe. Additionally, CAP_SYS_RAWIO privileges are necessary to work with groups and containers using this mode. Groups making use of this support are named /dev/vfio/noiommu-$GROUP and can only make use of the special VFIO_NOIOMMU_IOMMU for the container. Use of this mode, specifically binding a device without a native IOMMU group to a VFIO bus driver will taint the kernel and should therefore not be considered supported." Signed-off-by: Peng Fan <van.freenix@gmail.com> Cc: Eric Auger <eric.auger@linaro.org> Cc: Baptiste Reynal <b.reynal@virtualopensystems.com> Cc: Alex Williamson <alex.williamson@redhat.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>		2016-06-23 09:37:17 -06:00
..
pci	vfio/pci: Allow VPD short read	2016-05-31 21:25:52 -06:00
platform	vfio: platform: support No-IOMMU mode	2016-06-23 09:37:17 -06:00
Kconfig	vfio: Include No-IOMMU mode	2015-12-21 15:28:11 -07:00
Makefile	vfio: Split virqfd into a separate module for vfio bus drivers	2015-03-17 08:33:38 -06:00
vfio_iommu_spapr_tce.c	VFIO updates for v4.7-rc1	2016-05-25 09:47:26 -07:00
vfio_iommu_type1.c	vfio/type1: Fix build warning	2016-05-30 07:58:10 -06:00
vfio_spapr_eeh.c	drivers/vfio: Support EEH error injection	2015-05-12 20:33:35 +10:00
vfio.c	vfio: Add capability chain helpers	2016-02-22 16:10:08 -07:00
virqfd.c	vfio: Split virqfd into a separate module for vfio bus drivers	2015-03-17 08:33:38 -06:00