Matthew Rosato 5597557244 vfio iommu: Add dma available capability ... [ Upstream commit 7d6e132965 ] The following functional changes were needed for backport: - vfio_iommu_type1_get_info doesn't exist, call vfio_iommu_dma_avail_build_caps from vfio_iommu_type1_ioctl. - As further fallout from this, vfio_iommu_dma_avail_build_caps must acquire and release the iommu mutex lock. To do so, the return value is stored in a local variable as in vfio_iommu_iova_build_caps. Upstream commit description: Commit 492855939b ("vfio/type1: Limit DMA mappings per container") added the ability to limit the number of memory backed DMA mappings. However on s390x, when lazy mapping is in use, we use a very large number of concurrent mappings. Let's provide the current allowable number of DMA mappings to userspace via the IOMMU info chain so that userspace can take appropriate mitigation. Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-01-17 14:05:30 +01:00
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mdev	vfio/mdev: Fix reference count leak in add_mdev_supported_type	2020-06-24 17:50:36 +02:00
pci	vfio/pci: Move dummy_resources_list init in vfio_pci_probe()	2021-01-06 14:48:36 +01:00
platform	vfio: platform: fix reference leak in vfio_platform_open	2020-11-18 19:20:24 +01:00
Kconfig	docs: driver-api: add a series of orphaned documents	2019-07-15 11:03:02 -03:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
vfio.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
vfio_iommu_spapr_tce.c	mm: introduce page_shift()	2019-09-24 15:54:08 -07:00
vfio_iommu_type1.c	vfio iommu: Add dma available capability	2021-01-17 14:05:30 +01:00
vfio_spapr_eeh.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
virqfd.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00