]> www.infradead.org Git - users/dwmw2/linux.git/commit
iommu/arm-smmu-v3: Support IOMMU_VIOMMU_ALLOC
authorNicolin Chen <nicolinc@nvidia.com>
Thu, 31 Oct 2024 00:20:52 +0000 (21:20 -0300)
committerJason Gunthorpe <jgg@nvidia.com>
Tue, 12 Nov 2024 18:09:44 +0000 (14:09 -0400)
commit69d9b312f38aa19f8c801e90bd23d70685be49f0
tree8c330b01e7f00efaa42ddfdbf8a6d950aa74141f
parent4e6bd13aa33c78346973f01c7303b4909d79ec86
iommu/arm-smmu-v3: Support IOMMU_VIOMMU_ALLOC

Add a new driver-type for ARM SMMUv3 to enum iommu_viommu_type. Implement
an arm_vsmmu_alloc().

As an initial step, copy the VMID from s2_parent. A followup series is
required to give the VIOMMU object it's own VMID that will be used in all
nesting configurations.

Link: https://patch.msgid.link/r/8-v4-9e99b76f3518+3a8-smmuv3_nesting_jgg@nvidia.com
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-iommufd.c
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.h
include/uapi/linux/iommufd.h