iommu/vt-d: Use cache_tag_flush_range() in tlb_sync

The tlb_sync callback is called by the iommu core to flush a range of
caches for the affected domain. Use cache_tag_flush_range() in this
callback.

Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/20240416080656.60968-6-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c
index a268e2a51f4de40c0780d260c8e05c224a47c9ac..f3926ad7d737d7b743cdf59431a93e386f384b12 100644 (file)
--- a/drivers/iommu/intel/iommu.c
+++ b/drivers/iommu/intel/iommu.c
@@ -4104,25 +4104,8 @@ static size_t intel_iommu_unmap_pages(struct iommu_domain *domain,
 static void intel_iommu_tlb_sync(struct iommu_domain *domain,
                                 struct iommu_iotlb_gather *gather)
 {
-       struct dmar_domain *dmar_domain = to_dmar_domain(domain);
-       unsigned long iova_pfn = IOVA_PFN(gather->start);
-       size_t size = gather->end - gather->start;
-       struct iommu_domain_info *info;
-       unsigned long start_pfn;
-       unsigned long nrpages;
-       unsigned long i;
-
-       nrpages = aligned_nrpages(gather->start, size);
-       start_pfn = mm_to_dma_pfn_start(iova_pfn);
-
-       xa_for_each(&dmar_domain->iommu_array, i, info)
-               iommu_flush_iotlb_psi(info->iommu, dmar_domain,
-                                     start_pfn, nrpages,
-                                     list_empty(&gather->freelist), 0);
-
-       if (dmar_domain->nested_parent)
-               parent_domain_flush(dmar_domain, start_pfn, nrpages,
-                                   list_empty(&gather->freelist));
+       cache_tag_flush_range(to_dmar_domain(domain), gather->start,
+                             gather->end, list_empty(&gather->freelist));
        put_pages_list(&gather->freelist);
 }