Jason Gunthorpe e8ae0e140c vfio: Require that devices support DMA cache coherence ... IOMMU_CACHE means that normal DMAs do not require any additional coherency mechanism and is the basic uAPI that VFIO exposes to userspace. For instance VFIO applications like DPDK will not work if additional coherency operations are required. Therefore check IOMMU_CAP_CACHE_COHERENCY like vdpa & usnic do before allowing an IOMMU backed VFIO device to be created. Reviewed-by: Kevin Tian <kevin.tian@intel.com> Acked-by: Alex Williamson <alex.williamson@redhat.com> Acked-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/4-v3-2cf356649677+a32-intel_no_snoop_jgg@nvidia.com Signed-off-by: Joerg Roedel <jroedel@suse.de>		2022-04-28 17:24:57 +02:00
..
fsl-mc	bus: fsl-mc: fsl-mc-allocator: Rework MSI handling	2021-12-16 22:16:41 +01:00
mdev	vfio: simplify iommu group allocation for mediated devices	2021-09-30 12:46:44 -06:00
pci	vfio/pci: Fix vf_token mechanism when device-specific VF drivers are used	2022-04-13 11:37:44 -06:00
platform	vfio: Move vfio_iommu_group_get() to vfio_register_group_dev()	2021-09-30 12:46:43 -06:00
Kconfig	vfio: Use kconfig if XX/endif blocks instead of repeating 'depends on'	2021-08-26 10:36:51 -06:00
Makefile	vfio/fsl-mc: Add VFIO framework skeleton for fsl-mc devices	2020-10-07 14:17:33 -06:00
vfio_iommu_spapr_tce.c	vfio/spapr_tce: reject mediated devices	2021-09-30 12:46:44 -06:00
vfio_iommu_type1.c	vfio: Move the Intel no-snoop control off of IOMMU_CACHE	2022-04-28 17:24:57 +02:00
vfio_spapr_eeh.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
vfio.c	vfio: Require that devices support DMA cache coherence	2022-04-28 17:24:57 +02:00
vfio.h	vfio: clean up the check for mediated device in vfio_iommu_type1	2021-09-30 12:46:44 -06:00
virqfd.c	vfio/virqfd: Drain events from eventfd in virqfd_wakeup()	2020-11-15 09:49:10 -05:00