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| author | Jacob Pan <jacob.jun.pan@linux.intel.com> | 2023-03-22 13:07:58 -0700 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2023-03-31 10:03:23 +0200 |
| commit | cd3891158a77685aee6129f7374a018d13540b2c (patch) | |
| tree | f2aa7d4ea3a426b77e4f21f56219728c0dbfd529 /drivers/iommu | |
| parent | 760f41d182ec94a651977e70045fd61b57973408 (diff) | |
| download | linux-stable-cd3891158a77685aee6129f7374a018d13540b2c.tar.gz | |
iommu/sva: Move PASID helpers to sva code
Preparing to remove IOASID infrastructure, PASID management will be
under SVA code. Decouple mm code from IOASID.
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20230322200803.869130-3-jacob.jun.pan@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/iommu-sva.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/iommu/iommu-sva.c b/drivers/iommu/iommu-sva.c index 24bf9b2b58aa..fcfdc80a3939 100644 --- a/drivers/iommu/iommu-sva.c +++ b/drivers/iommu/iommu-sva.c @@ -44,7 +44,7 @@ int iommu_sva_alloc_pasid(struct mm_struct *mm, ioasid_t min, ioasid_t max) if (!pasid_valid(pasid)) ret = -ENOMEM; else - mm_pasid_set(mm, pasid); + mm->pasid = pasid; out: mutex_unlock(&iommu_sva_lock); return ret; @@ -238,3 +238,11 @@ out_put_mm: return status; } + +void mm_pasid_drop(struct mm_struct *mm) +{ + if (pasid_valid(mm->pasid)) { + ioasid_free(mm->pasid); + mm->pasid = INVALID_IOASID; + } +} |