Jason Gunthorpe afe4e376ac vfio: Move IOMMU_CAP_CACHE_COHERENCY test to after we know we have a group ... The test isn't going to work if a group doesn't exist. Normally this isn't a problem since VFIO isn't going to create a device if there is no group, but the special CONFIG_VFIO_NOIOMMU behavior allows bypassing this prevention. The new cap test effectively forces a group and breaks this config option. Move the cap test to vfio_group_find_or_alloc() which is the earliest time we know we have a group available and thus are not running in noiommu mode. Fixes: e8ae0e140c ("vfio: Require that devices support DMA cache coherence") Reported-by: Xiang Chen <chenxiang66@hisilicon.com> Tested-by: Xiang Chen <chenxiang66@hisilicon.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Link: https://lore.kernel.org/r/0-v1-e8934b490f36+f4-vfio_cap_fix_jgg@nvidia.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>		2022-07-05 16:06:50 -06:00
..
fsl-mc	vfio: Set DMA ownership for VFIO devices	2022-04-28 15:32:20 +02:00
mdev	vfio/mdev: Use the driver core to create the 'remove' file	2022-04-21 07:36:56 -04:00
pci	vfio/pci: Add driver_managed_dma to the new vfio_pci drivers	2022-05-23 10:46:34 -06:00
platform	vfio: Set DMA ownership for VFIO devices	2022-04-28 15:32:20 +02:00
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.c	vfio: Move IOMMU_CAP_CACHE_COHERENCY test to after we know we have a group	2022-07-05 16:06:50 -06:00
vfio.h	vfio: clean up the check for mediated device in vfio_iommu_type1	2021-09-30 12:46:44 -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
virqfd.c	vfio/virqfd: Drain events from eventfd in virqfd_wakeup()	2020-11-15 09:49:10 -05:00