1. Add IOMMU_CAP_NON_STRICT capability.
2. Dynamic choose strict or non-strict mode base on the iommu domain type.
Signed-off-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx>
---
drivers/iommu/arm-smmu-v3.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c
index 59b3387..25bccbd 100644
--- a/drivers/iommu/arm-smmu-v3.c
+++ b/drivers/iommu/arm-smmu-v3.c
@@ -1440,6 +1440,8 @@ static bool arm_smmu_capable(enum iommu_cap cap)
return true;
case IOMMU_CAP_NOEXEC:
return true;
+ case IOMMU_CAP_NON_STRICT:
+ return true;
default:
return false;
}
@@ -1767,7 +1769,7 @@ static int arm_smmu_map(struct iommu_domain *domain, unsigned long iova,
if (!ops)
return 0;
- return ops->unmap(ops, iova, size, IOMMU_STRICT);
+ return ops->unmap(ops, iova, size, IOMMU_DOMAIN_IS_STRICT(domain));
}
static void arm_smmu_flush_iotlb_all(struct iommu_domain *domain)
@@ -1782,7 +1784,7 @@ static void arm_smmu_iotlb_sync(struct iommu_domain *domain)
{
struct arm_smmu_device *smmu = to_smmu_domain(domain)->smmu;
- if (smmu)
+ if (smmu && IOMMU_DOMAIN_IS_STRICT(domain))
__arm_smmu_tlb_sync(smmu);
}
--
1.8.3
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