[PATCH 04/12] iommu/vt-d: Use cache_tag_flush_all() in flush_iotlb_all

[Lu Baolu]

The flush_iotlb_all callback is called by the iommu core to flush
all caches for the affected domain. Use cache_tag_flush_all() in
this callback.

Signed-off-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
---
 drivers/iommu/intel/iommu.c | 21 +--------------------
 1 file changed, 1 insertion(+), 20 deletions(-)

diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index 93e4422c9b10..4ce98f23917c 100644
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -1560,26 +1560,7 @@ static void parent_domain_flush(struct dmar_domain *domain,
 
 static void intel_flush_iotlb_all(struct iommu_domain *domain)
 {
-	struct dmar_domain *dmar_domain = to_dmar_domain(domain);
-	struct iommu_domain_info *info;
-	unsigned long idx;
-
-	xa_for_each(&dmar_domain->iommu_array, idx, info) {
-		struct intel_iommu *iommu = info->iommu;
-		u16 did = domain_id_iommu(dmar_domain, iommu);
-
-		if (dmar_domain->use_first_level)
-			domain_flush_pasid_iotlb(iommu, dmar_domain, 0, -1, 0);
-		else
-			iommu->flush.flush_iotlb(iommu, did, 0, 0,
-						 DMA_TLB_DSI_FLUSH);
-
-		if (!cap_caching_mode(iommu->cap))
-			iommu_flush_dev_iotlb(dmar_domain, 0, MAX_AGAW_PFN_WIDTH);
-	}
-
-	if (dmar_domain->nested_parent)
-		parent_domain_flush(dmar_domain, 0, -1, 0);
+	cache_tag_flush_all(to_dmar_domain(domain));
 }
 
 static void iommu_disable_protect_mem_regions(struct intel_iommu *iommu)
-- 
2.34.1