From 3e6110fd5480f5f86ff31381f4dea14218284bff Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 15 Dec 2015 12:54:06 -0800 Subject: Revert "scatterlist: use sg_phys()" commit db0fa0cb0157 "scatterlist: use sg_phys()" did replacements of the form: phys_addr_t phys = page_to_phys(sg_page(s)); phys_addr_t phys = sg_phys(s) & PAGE_MASK; However, this breaks platforms where sizeof(phys_addr_t) > sizeof(unsigned long). Revert for 4.3 and 4.4 to make room for a combined helper in 4.5. Cc: Cc: Jens Axboe Cc: Christoph Hellwig Cc: Russell King Cc: David Woodhouse Cc: Andrew Morton Fixes: db0fa0cb0157 ("scatterlist: use sg_phys()") Suggested-by: Joerg Roedel Reported-by: Vitaly Lavrov Signed-off-by: Dan Williams --- drivers/iommu/intel-iommu.c | 4 ++-- drivers/iommu/iommu.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/iommu') diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index f1042daef9ad..ac7387686ddc 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -2159,7 +2159,7 @@ static int __domain_mapping(struct dmar_domain *domain, unsigned long iov_pfn, sg_res = aligned_nrpages(sg->offset, sg->length); sg->dma_address = ((dma_addr_t)iov_pfn << VTD_PAGE_SHIFT) + sg->offset; sg->dma_length = sg->length; - pteval = (sg_phys(sg) & PAGE_MASK) | prot; + pteval = page_to_phys(sg_page(sg)) | prot; phys_pfn = pteval >> VTD_PAGE_SHIFT; } @@ -3704,7 +3704,7 @@ static int intel_nontranslate_map_sg(struct device *hddev, for_each_sg(sglist, sg, nelems, i) { BUG_ON(!sg_page(sg)); - sg->dma_address = sg_phys(sg); + sg->dma_address = page_to_phys(sg_page(sg)) + sg->offset; sg->dma_length = sg->length; } return nelems; diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index abae363c7b9b..0e3b0092ec92 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -1430,7 +1430,7 @@ size_t default_iommu_map_sg(struct iommu_domain *domain, unsigned long iova, min_pagesz = 1 << __ffs(domain->ops->pgsize_bitmap); for_each_sg(sg, s, nents, i) { - phys_addr_t phys = sg_phys(s); + phys_addr_t phys = page_to_phys(sg_page(s)) + s->offset; /* * We are mapping on IOMMU page boundaries, so offset within -- cgit v1.2.3