David Woodhouse e1605495c7 intel-iommu: Introduce domain_sg_mapping() to speed up intel_map_sg()
Instead of calling domain_pfn_mapping() repeatedly with single or
small numbers of pages, just pass the sglist in. It can optimise the
number of cache flushes like domain_pfn_mapping() does, and gives a huge
speedup for large scatterlists.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2009-06-30 03:51:30 +01:00
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