Merge git://git.infradead.org/~dwmw2/iommu-2.6.31
* git://git.infradead.org/~dwmw2/iommu-2.6.31: intel-iommu: Fix enabling snooping feature by mistake intel-iommu: Mask physical address to correct page size in intel_map_single() intel-iommu: Correct sglist size calculation.
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commit
ff1649ff78
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@ -1505,7 +1505,6 @@ static int domain_context_mapping_one(struct dmar_domain *domain, int segment,
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}
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set_bit(num, iommu->domain_ids);
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set_bit(iommu->seq_id, &domain->iommu_bmp);
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iommu->domains[num] = domain;
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id = num;
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}
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@ -1648,6 +1647,14 @@ static int domain_context_mapped(struct pci_dev *pdev)
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tmp->devfn);
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}
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/* Returns a number of VTD pages, but aligned to MM page size */
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static inline unsigned long aligned_nrpages(unsigned long host_addr,
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size_t size)
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{
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host_addr &= ~PAGE_MASK;
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return PAGE_ALIGN(host_addr + size) >> VTD_PAGE_SHIFT;
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}
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static int __domain_mapping(struct dmar_domain *domain, unsigned long iov_pfn,
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struct scatterlist *sg, unsigned long phys_pfn,
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unsigned long nr_pages, int prot)
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@ -1675,7 +1682,7 @@ static int __domain_mapping(struct dmar_domain *domain, unsigned long iov_pfn,
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uint64_t tmp;
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if (!sg_res) {
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sg_res = (sg->offset + sg->length + VTD_PAGE_SIZE - 1) >> VTD_PAGE_SHIFT;
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sg_res = aligned_nrpages(sg->offset, sg->length);
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sg->dma_address = ((dma_addr_t)iov_pfn << VTD_PAGE_SHIFT) + sg->offset;
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sg->dma_length = sg->length;
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pteval = page_to_phys(sg_page(sg)) | prot;
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@ -2415,14 +2422,6 @@ error:
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return ret;
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}
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/* Returns a number of VTD pages, but aligned to MM page size */
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static inline unsigned long aligned_nrpages(unsigned long host_addr,
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size_t size)
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{
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host_addr &= ~PAGE_MASK;
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return PAGE_ALIGN(host_addr + size) >> VTD_PAGE_SHIFT;
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}
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/* This takes a number of _MM_ pages, not VTD pages */
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static struct iova *intel_alloc_iova(struct device *dev,
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struct dmar_domain *domain,
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@ -2551,6 +2550,7 @@ static dma_addr_t __intel_map_single(struct device *hwdev, phys_addr_t paddr,
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int prot = 0;
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int ret;
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struct intel_iommu *iommu;
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unsigned long paddr_pfn = paddr >> PAGE_SHIFT;
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BUG_ON(dir == DMA_NONE);
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@ -2585,7 +2585,7 @@ static dma_addr_t __intel_map_single(struct device *hwdev, phys_addr_t paddr,
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* is not a big problem
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*/
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ret = domain_pfn_mapping(domain, mm_to_dma_pfn(iova->pfn_lo),
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paddr >> VTD_PAGE_SHIFT, size, prot);
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mm_to_dma_pfn(paddr_pfn), size, prot);
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if (ret)
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goto error;
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@ -2875,7 +2875,7 @@ static int intel_map_sg(struct device *hwdev, struct scatterlist *sglist, int ne
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start_vpfn = mm_to_dma_pfn(iova->pfn_lo);
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ret = domain_sg_mapping(domain, start_vpfn, sglist, mm_to_dma_pfn(size), prot);
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ret = domain_sg_mapping(domain, start_vpfn, sglist, size, prot);
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if (unlikely(ret)) {
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/* clear the page */
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dma_pte_clear_range(domain, start_vpfn,
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@ -3408,6 +3408,7 @@ static int md_domain_init(struct dmar_domain *domain, int guest_width)
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domain->iommu_count = 0;
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domain->iommu_coherency = 0;
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domain->iommu_snooping = 0;
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domain->max_addr = 0;
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/* always allocate the top pgd */
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