Messages in this thread Patch in this message |  | | From | Zhen Lei <> | Subject | [PATCH v4 4/5] iommu/arm-smmu-v3: add support for non-strict mode | Date | Mon, 6 Aug 2018 20:27:03 +0800 |
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Dynamically choose strict or non-strict mode for page table config based on the iommu domain type.
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> --- drivers/iommu/arm-smmu-v3.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 2f1304b..904bc1e 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -1622,6 +1622,11 @@ static int arm_smmu_domain_finalise(struct iommu_domain *domain) if (smmu->features & ARM_SMMU_FEAT_COHERENCY) pgtbl_cfg.quirks = IO_PGTABLE_QUIRK_NO_DMA;
+ if (domain->type == IOMMU_DOMAIN_DMA) { + domain->non_strict = 1; + pgtbl_cfg.quirks |= IO_PGTABLE_QUIRK_NON_STRICT; + } + pgtbl_ops = alloc_io_pgtable_ops(fmt, &pgtbl_cfg, smmu_domain); if (!pgtbl_ops) return -ENOMEM; @@ -1782,7 +1787,7 @@ static void arm_smmu_iotlb_sync(struct iommu_domain *domain) { struct arm_smmu_device *smmu = to_smmu_domain(domain)->smmu;
- if (smmu) + if (smmu && !domain->non_strict) __arm_smmu_tlb_sync(smmu); }
-- 1.8.3
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