intel-iommu: Change aligned_size() to aligned_nrpages()
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index bc49b12..22add36 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -2320,11 +2320,13 @@
return ret;
}
-static inline u64 aligned_size(u64 host_addr, size_t size)
+static inline unsigned long aligned_nrpages(unsigned long host_addr,
+ size_t size)
{
- u64 addr;
- addr = (host_addr & (~PAGE_MASK)) + size;
- return PAGE_ALIGN(addr);
+ host_addr &= ~PAGE_MASK;
+ host_addr += size + PAGE_SIZE - 1;
+
+ return host_addr >> VTD_PAGE_SHIFT;
}
struct iova *
@@ -2466,7 +2468,7 @@
return 0;
iommu = domain_get_iommu(domain);
- size = aligned_size(paddr, size) >> VTD_PAGE_SHIFT;
+ size = aligned_nrpages(paddr, size);
iova = __intel_alloc_iova(hwdev, domain, size << VTD_PAGE_SHIFT, pdev->dma_mask);
if (!iova)
@@ -2757,9 +2759,10 @@
iommu = domain_get_iommu(domain);
for_each_sg(sglist, sg, nelems, i)
- size += aligned_size(sg->offset, sg->length);
+ size += aligned_nrpages(sg->offset, sg->length);
- iova = __intel_alloc_iova(hwdev, domain, size, pdev->dma_mask);
+ iova = __intel_alloc_iova(hwdev, domain, size << VTD_PAGE_SHIFT,
+ pdev->dma_mask);
if (!iova) {
sglist->dma_length = 0;
return 0;
@@ -2778,7 +2781,7 @@
start_vpfn = mm_to_dma_pfn(iova->pfn_lo);
offset_pfn = 0;
for_each_sg(sglist, sg, nelems, i) {
- int nr_pages = aligned_size(sg->offset, sg->length) >> VTD_PAGE_SHIFT;
+ int nr_pages = aligned_nrpages(sg->offset, sg->length);
ret = domain_pfn_mapping(domain, start_vpfn + offset_pfn,
page_to_dma_pfn(sg_page(sg)),
nr_pages, prot);
@@ -3502,7 +3505,7 @@
}
/* Round up size to next multiple of PAGE_SIZE, if it and
the low bits of hpa would take us onto the next page */
- size = aligned_size(hpa, size) >> VTD_PAGE_SHIFT;
+ size = aligned_nrpages(hpa, size);
ret = domain_pfn_mapping(dmar_domain, iova >> VTD_PAGE_SHIFT,
hpa >> VTD_PAGE_SHIFT, size, prot);
return ret;