intel-iommu: Performance improvement for dma_pte_clear_range()

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It's a bit silly to repeatedly call domain_flush_cache() for each PTE
individually, as we clear it. Instead, batch them up and flush a whole
range at a time. We might as well refrain from recalculating the PTE
address from scratch each time round the loop too.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

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David Woodhouse 2009-06-28 18:52:20 +01:00

parent c5395d5c4a

commit 310a5ab93c

1 changed files with 15 additions and 16 deletions

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drivers/pci/intel-iommu.c

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