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authorJoerg Roedel <jroedel@suse.de>2015-04-01 14:58:50 +0200
committerJoerg Roedel <jroedel@suse.de>2015-04-02 13:31:08 +0200
commit5d7c94c3f4f20964b217d64ee44a9a08320c315a (patch)
treef8100a32e161166db6547d92819fbb64cc28e73a /drivers/iommu
parent71b390e9bec5121d25c45326ff0b0b96a143f9a8 (diff)
downloadlinux-5d7c94c3f4f20964b217d64ee44a9a08320c315a.tar.bz2
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>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/amd_iommu.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index c9ee444d8209..f97441b6aaad 100644
--- 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);