[Xen-devel] [REBASE PATCH v5 6/9] iommu/dma-iommu.c: Convert to use vm_map_pages()

[Souptick Joarder <jrdr.linux@xxxxxxxxx>]

Convert to use vm_map_pages() to map range of kernel
memory to user vma.

Signed-off-by: Souptick Joarder <jrdr.linux@xxxxxxxxx>
---
 drivers/iommu/dma-iommu.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c
index d19f3d6..bacebff 100644
--- a/drivers/iommu/dma-iommu.c
+++ b/drivers/iommu/dma-iommu.c
@@ -620,17 +620,7 @@ struct page **iommu_dma_alloc(struct device *dev, size_t 
size, gfp_t gfp,
 
 int iommu_dma_mmap(struct page **pages, size_t size, struct vm_area_struct 
*vma)
 {
-       unsigned long uaddr = vma->vm_start;
-       unsigned int i, count = PAGE_ALIGN(size) >> PAGE_SHIFT;
-       int ret = -ENXIO;
-
-       for (i = vma->vm_pgoff; i < count && uaddr < vma->vm_end; i++) {
-               ret = vm_insert_page(vma, uaddr, pages[i]);
-               if (ret)
-                       break;
-               uaddr += PAGE_SIZE;
-       }
-       return ret;
+       return vm_map_pages(vma, pages, PAGE_ALIGN(size) >> PAGE_SHIFT);
 }
 
 static dma_addr_t __iommu_dma_map(struct device *dev, phys_addr_t phys,
-- 
1.9.1


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel