iommu/vt-d: Simplify io/tlb flushing in intel_iommu_unmap
We don't need to do an expensive search for domain-ids anymore, as we keep track of per-iommu domain-ids. Signed-off-by: Joerg Roedel <jroedel@suse.de>
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@ -4834,7 +4834,7 @@ static size_t intel_iommu_unmap(struct iommu_domain *domain,
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struct intel_iommu *iommu;
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struct intel_iommu *iommu;
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unsigned long start_pfn, last_pfn;
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unsigned long start_pfn, last_pfn;
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unsigned int npages;
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unsigned int npages;
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int iommu_id, num, ndomains, level = 0;
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int iommu_id, level = 0;
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/* Cope with horrid API which requires us to unmap more than the
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/* Cope with horrid API which requires us to unmap more than the
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size argument if it happens to be a large-page mapping. */
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size argument if it happens to be a large-page mapping. */
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@ -4854,17 +4854,8 @@ static size_t intel_iommu_unmap(struct iommu_domain *domain,
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for_each_domain_iommu(iommu_id, dmar_domain) {
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for_each_domain_iommu(iommu_id, dmar_domain) {
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iommu = g_iommus[iommu_id];
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iommu = g_iommus[iommu_id];
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/*
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iommu_flush_iotlb_psi(g_iommus[iommu_id], dmar_domain,
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* find bit position of dmar_domain
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start_pfn, npages, !freelist, 0);
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*/
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ndomains = cap_ndoms(iommu->cap);
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for_each_set_bit(num, iommu->domain_ids, ndomains) {
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if (get_iommu_domain(iommu, num) == dmar_domain)
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iommu_flush_iotlb_psi(iommu, dmar_domain,
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start_pfn, npages,
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!freelist, 0);
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}
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}
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}
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dma_free_pagelist(freelist);
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dma_free_pagelist(freelist);
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