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(parent: cb4789b) | patch
iommu/sva: Add PASID helpers
authorJean-Philippe Brucker <jean-philippe@linaro.org>
Fri, 6 Nov 2020 15:50:48 +0000 (16:50 +0100)
committerWill Deacon <will@kernel.org>
Mon, 23 Nov 2020 14:16:55 +0000 (14:16 +0000)
commitcfc78dfd9b36dcda7c3ca9cdfca343f84c72252f
tree8b1b43574b85d1d31d3aff0c7e7ac67f959118f2tree | snapshot
parentcb4789b0d19ff231ce9f73376a023341300aed96commit | diff
iommu/sva: Add PASID helpers

Let IOMMU drivers allocate a single PASID per mm. Store the mm in the
IOASID set to allow refcounting and searching mm by PASID, when handling
an I/O page fault.

Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20201106155048.997886-3-jean-philippe@linaro.org
Signed-off-by: Will Deacon <will@kernel.org>
drivers/iommu/Kconfig diff | blob | history
drivers/iommu/Makefile diff | blob | history
drivers/iommu/iommu-sva-lib.c [new file with mode: 0644] blob
drivers/iommu/iommu-sva-lib.h [new file with mode: 0644] blob
Domain: System / Kernel;