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| author | Jean-Philippe Brucker <jean-philippe@linaro.org> | 2020-11-06 16:50:48 +0100 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-11-23 14:16:55 +0000 |
| commit | cfc78dfd9b36dcda7c3ca9cdfca343f84c72252f (patch) | |
| tree | 8b1b43574b85d1d31d3aff0c7e7ac67f959118f2 /drivers/iommu/Kconfig | |
| parent | cb4789b0d19ff231ce9f73376a023341300aed96 (diff) | |
| download | lwn-cfc78dfd9b36dcda7c3ca9cdfca343f84c72252f.tar.gz lwn-cfc78dfd9b36dcda7c3ca9cdfca343f84c72252f.zip | |
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>
Diffstat (limited to 'drivers/iommu/Kconfig')
| -rw-r--r-- | drivers/iommu/Kconfig | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig index 04878caf6da4..f5ebbdfbf636 100644 --- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -103,6 +103,11 @@ config IOMMU_DMA select IRQ_MSI_IOMMU select NEED_SG_DMA_LENGTH +# Shared Virtual Addressing library +config IOMMU_SVA_LIB + bool + select IOASID + config FSL_PAMU bool "Freescale IOMMU support" depends on PCI |