diff options
| author | Jason Gunthorpe <jgg@nvidia.com> | 2024-03-27 21:07:49 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2024-04-09 14:38:32 +0300 |
| commit | fdc69d39e77f88264ee6e8174ff9aaf0953aecd9 (patch) | |
| tree | a1209134ea0792f16e57af47492955540761987f /drivers/iommu/arm | |
| parent | 734554fdfce6731b22f0777ec3f1e4a853354883 (diff) | |
| download | linux-fdc69d39e77f88264ee6e8174ff9aaf0953aecd9.tar.xz | |
iommu/arm-smmu-v3: Do not allow a SVA domain to be set on the wrong PASID
The SVA code is wired to assume that the SVA is programmed onto the
mm->pasid. The current core code always does this, so it is fine.
Add a check for clarity.
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/3-v6-228e7adf25eb+4155-smmuv3_newapi_p2_jgg@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu/arm')
| -rw-r--r-- | drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c index 2cd433a9c8a0..41b44baef15e 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3-sva.c @@ -569,6 +569,9 @@ static int arm_smmu_sva_set_dev_pasid(struct iommu_domain *domain, int ret = 0; struct mm_struct *mm = domain->mm; + if (mm_get_enqcmd_pasid(mm) != id) + return -EINVAL; + mutex_lock(&sva_lock); ret = __arm_smmu_sva_bind(dev, id, mm); mutex_unlock(&sva_lock); |