iommu/amd: Optimize alloc_new_range for new fetch_pte interface

Now that fetch_pte returns the page-size of the pte, the
call in this function can also be optimized a little bit.

Tested-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index c9ee444..f97441b 100644 (file)
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -1591,7 +1591,7 @@ static int alloc_new_range(struct dma_ops_domain *dma_dom,
 {
        int index = dma_dom->aperture_size >> APERTURE_RANGE_SHIFT;
        struct amd_iommu *iommu;
-       unsigned long i, old_size;
+       unsigned long i, old_size, pte_pgsize;
 
 #ifdef CONFIG_IOMMU_STRESS
        populate = false;
@@ -1664,13 +1664,13 @@ static int alloc_new_range(struct dma_ops_domain *dma_dom,
         */
        for (i = dma_dom->aperture[index]->offset;
             i < dma_dom->aperture_size;
-            i += PAGE_SIZE) {
-               unsigned long pte_pgsize;
+            i += pte_pgsize) {
                u64 *pte = fetch_pte(&dma_dom->domain, i, &pte_pgsize);
                if (!pte || !IOMMU_PTE_PRESENT(*pte))
                        continue;
 
-               dma_ops_reserve_addresses(dma_dom, i >> PAGE_SHIFT, 1);
+               dma_ops_reserve_addresses(dma_dom, i >> PAGE_SHIFT,
+                                         pte_pgsize >> 12);
        }
 
        update_domain(&dma_dom->domain);