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| author | Joerg Roedel | 2015-07-21 15:50:02 +0200 |
|---|---|---|
| committer | Joerg Roedel | 2015-08-12 16:23:34 +0200 |
| commit | 42e8c186b595a32918933b3dec445f0bf0f486f6 (patch) | |
| tree | 01d79bc6954e9b227ecfc730364e425cba12ea66 /drivers/iommu | |
| parent | iommu/vt-d: Replace iommu_bmp with a refcount (diff) | |
| download | kernel-qcow2-linux-42e8c186b595a32918933b3dec445f0bf0f486f6.tar.gz kernel-qcow2-linux-42e8c186b595a32918933b3dec445f0bf0f486f6.tar.xz kernel-qcow2-linux-42e8c186b595a32918933b3dec445f0bf0f486f6.zip | |
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>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/intel-iommu.c | 15 |
1 files changed, 3 insertions, 12 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c index a5aa957a69d5..57c115cb351b 100644 --- a/drivers/iommu/intel-iommu.c +++ b/drivers/iommu/intel-iommu.c @@ -4834,7 +4834,7 @@ static size_t intel_iommu_unmap(struct iommu_domain *domain, struct intel_iommu *iommu; unsigned long start_pfn, last_pfn; unsigned int npages; - int iommu_id, num, ndomains, level = 0; + int iommu_id, level = 0; /* Cope with horrid API which requires us to unmap more than the size argument if it happens to be a large-page mapping. */ @@ -4854,17 +4854,8 @@ static size_t intel_iommu_unmap(struct iommu_domain *domain, for_each_domain_iommu(iommu_id, dmar_domain) { iommu = g_iommus[iommu_id]; - /* - * find bit position of dmar_domain - */ - ndomains = cap_ndoms(iommu->cap); - for_each_set_bit(num, iommu->domain_ids, ndomains) { - if (get_iommu_domain(iommu, num) == dmar_domain) - iommu_flush_iotlb_psi(iommu, dmar_domain, - start_pfn, npages, - !freelist, 0); - } - + iommu_flush_iotlb_psi(g_iommus[iommu_id], dmar_domain, + start_pfn, npages, !freelist, 0); } dma_free_pagelist(freelist); |