intel-iommu: Clean up intel_iommu_unmap_range()
Use unaligned address for domain->max_addr. That algorithm isn't ideal anyway -- we should probably just look at the last iova in the tree. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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@ -3491,7 +3491,7 @@ static int intel_iommu_map_range(struct iommu_domain *domain,
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if ((iommu_prot & IOMMU_CACHE) && dmar_domain->iommu_snooping)
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prot |= DMA_PTE_SNP;
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max_addr = (iova & VTD_PAGE_MASK) + VTD_PAGE_ALIGN(size);
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max_addr = iova + size;
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if (dmar_domain->max_addr < max_addr) {
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int min_agaw;
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u64 end;
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@ -3518,16 +3518,12 @@ static void intel_iommu_unmap_range(struct iommu_domain *domain,
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unsigned long iova, size_t size)
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{
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struct dmar_domain *dmar_domain = domain->priv;
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dma_addr_t base;
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/* The address might not be aligned */
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base = iova & VTD_PAGE_MASK;
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size = VTD_PAGE_ALIGN(size);
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dma_pte_clear_range(dmar_domain, base >> VTD_PAGE_SHIFT,
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(base + size - 1) >> VTD_PAGE_SHIFT);
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dma_pte_clear_range(dmar_domain, iova >> VTD_PAGE_SHIFT,
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(iova + size - 1) >> VTD_PAGE_SHIFT);
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if (dmar_domain->max_addr == base + size)
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dmar_domain->max_addr = base;
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if (dmar_domain->max_addr == iova + size)
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dmar_domain->max_addr = iova;
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}
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static phys_addr_t intel_iommu_iova_to_phys(struct iommu_domain *domain,
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