diff options
| author | Xiang Chen <chenxiang66@hisilicon.com> | 2021-03-30 15:58:26 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2021-03-30 17:06:51 +0300 |
| commit | 6cc7e5a9c6b02507b9be5a99b51e970afa91c85f (patch) | |
| tree | df3fdd541e924b9d3e9780450db6f67e800e2d24 /drivers/iommu/arm/arm-smmu-v3 | |
| parent | 655c447c97d7fe462e6cd9e15809037be028bc70 (diff) | |
| download | linux-6cc7e5a9c6b02507b9be5a99b51e970afa91c85f.tar.xz | |
iommu/arm-smmu-v3: Add a check to avoid invalid iotlb sync
It may send a invalid tlb sync for smmuv3 if iotlb_gather is not valid
(iotlb_gather->pgsize = 0). So add a check to avoid invalid iotlb sync
for it.
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Link: https://lore.kernel.org/r/1617109106-121844-1-git-send-email-chenxiang66@hisilicon.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu/arm/arm-smmu-v3')
| -rw-r--r-- | drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c index 8594b4a83043..941ba5484731 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2305,6 +2305,9 @@ static void arm_smmu_iotlb_sync(struct iommu_domain *domain, { struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + if (!gather->pgsize) + return; + arm_smmu_tlb_inv_range_domain(gather->start, gather->end - gather->start + 1, gather->pgsize, true, smmu_domain); |