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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-06-02 05:48:50 +0900 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-06-02 05:48:50 +0900 |
| commit | f0f52a9463839c52a63c05d6e7d4a330d94a9794 (patch) | |
| tree | d964f65aa37dd46b457bc615f2f37e75390c6df8 /drivers/pci/iova.c | |
| parent | 0f48f2600911d5de6393829e4a9986d4075558b3 (diff) | |
| parent | 70e535d1e5d1e4317e894d6228b762cf9c3fbc6a (diff) | |
| download | kernel_samsung_crespo-f0f52a9463839c52a63c05d6e7d4a330d94a9794.tar.gz kernel_samsung_crespo-f0f52a9463839c52a63c05d6e7d4a330d94a9794.tar.bz2 kernel_samsung_crespo-f0f52a9463839c52a63c05d6e7d4a330d94a9794.zip | |
Merge git://git.infradead.org/iommu-2.6
* git://git.infradead.org/iommu-2.6:
intel-iommu: Fix off-by-one in RMRR setup
intel-iommu: Add domain check in domain_remove_one_dev_info
intel-iommu: Remove Host Bridge devices from identity mapping
intel-iommu: Use coherent DMA mask when requested
intel-iommu: Dont cache iova above 32bit
intel-iommu: Speed up processing of the identity_mapping function
intel-iommu: Check for identity mapping candidate using system dma mask
intel-iommu: Only unlink device domains from iommu
intel-iommu: Enable super page (2MiB, 1GiB, etc.) support
intel-iommu: Flush unmaps at domain_exit
intel-iommu: Remove obsolete comment from detect_intel_iommu
intel-iommu: fix VT-d PMR disable for TXT on S3 resume
Diffstat (limited to 'drivers/pci/iova.c')
| -rw-r--r-- | drivers/pci/iova.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/pci/iova.c b/drivers/pci/iova.c index 9606e599a47..c5c274ab5c5 100644 --- a/drivers/pci/iova.c +++ b/drivers/pci/iova.c @@ -63,8 +63,16 @@ __cached_rbnode_delete_update(struct iova_domain *iovad, struct iova *free) curr = iovad->cached32_node; cached_iova = container_of(curr, struct iova, node); - if (free->pfn_lo >= cached_iova->pfn_lo) - iovad->cached32_node = rb_next(&free->node); + if (free->pfn_lo >= cached_iova->pfn_lo) { + struct rb_node *node = rb_next(&free->node); + struct iova *iova = container_of(node, struct iova, node); + + /* only cache if it's below 32bit pfn */ + if (node && iova->pfn_lo < iovad->dma_32bit_pfn) + iovad->cached32_node = node; + else + iovad->cached32_node = NULL; + } } /* Computes the padding size required, to make the |