intel-iommu mistakenly uses offset_pfn when caching mode is enabled
intel_map_sg used offset_pfn which was set to zero when invalidating the IOTLB. intel_map_sg now uses size variable for this matter. Signed-off-by: Nadav Amit <nadav.amit@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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@ -2860,7 +2860,6 @@ static int intel_map_sg(struct device *hwdev, struct scatterlist *sglist, int ne
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struct dmar_domain *domain;
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size_t size = 0;
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int prot = 0;
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size_t offset_pfn = 0;
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struct iova *iova = NULL;
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int ret;
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struct scatterlist *sg;
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@ -2914,7 +2913,7 @@ static int intel_map_sg(struct device *hwdev, struct scatterlist *sglist, int ne
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/* it's a non-present to present mapping. Only flush if caching mode */
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if (cap_caching_mode(iommu->cap))
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iommu_flush_iotlb_psi(iommu, 0, start_vpfn, offset_pfn);
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iommu_flush_iotlb_psi(iommu, 0, start_vpfn, size);
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else
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iommu_flush_write_buffer(iommu);
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