diff options
author | Alex Shi <alex.shi@linaro.org> | 2018-01-18 15:26:28 +0800 |
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committer | Alex Shi <alex.shi@linaro.org> | 2018-01-18 15:26:28 +0800 |
commit | 2ba51c6d36ee1b43c1f898c6c48ddf3d33e9ab30 (patch) | |
tree | ff3302dc45a91d7bfcaabd37bfa8fa391a954180 /drivers/iommu/intel-iommu.c | |
parent | 28610abf4a574c33ca70e3d7b0e523fdede488d1 (diff) | |
parent | 90816cc1d4a1d23efe37b74866c6174dd5eab6b5 (diff) |
Merge remote-tracking branch 'rt-stable/v4.9-rt' into linux-linaro-lsk-v4.9-rtlsk-v4.9-18.02-rt
Conflicts:
arch/arm64/mm/init.c
Diffstat (limited to 'drivers/iommu/intel-iommu.c')
-rw-r--r-- | drivers/iommu/intel-iommu.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index 980f41f1a194..8a1a8432a6bd 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -2245,10 +2245,12 @@ static int __domain_mapping(struct dmar_domain *domain, unsigned long iov_pfn, uint64_t tmp; if (!sg_res) { + unsigned int pgoff = sg->offset & ~PAGE_MASK; + sg_res = aligned_nrpages(sg->offset, sg->length); - sg->dma_address = ((dma_addr_t)iov_pfn << VTD_PAGE_SHIFT) + sg->offset; + sg->dma_address = ((dma_addr_t)iov_pfn << VTD_PAGE_SHIFT) + pgoff; sg->dma_length = sg->length; - pteval = page_to_phys(sg_page(sg)) | prot; + pteval = (sg_phys(sg) - pgoff) | prot; phys_pfn = pteval >> VTD_PAGE_SHIFT; } @@ -3890,7 +3892,7 @@ static int intel_nontranslate_map_sg(struct device *hddev, for_each_sg(sglist, sg, nelems, i) { BUG_ON(!sg_page(sg)); - sg->dma_address = page_to_phys(sg_page(sg)) + sg->offset; + sg->dma_address = sg_phys(sg); sg->dma_length = sg->length; } return nelems; |