KVM: PPC: e500: Support large page mappings of PFNMAP vmas.

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This allows large pages to be used on guest mappings backed by things like
/dev/mem, resulting in a significant speedup when guest memory
is mapped this way (it's useful for directly-assigned MMIO, too).

This is not a substitute for hugetlbfs integration, but is useful for
configurations where devices are directly assigned on chips without an
IOMMU -- in these cases, we need guest physical and true physical to
match, and be contiguous, so static reservation and mapping via /dev/mem
is the most straightforward way to set things up.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Alexander Graf <agraf@suse.de>

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Scott Wood 2011-06-14 18:34:39 -05:00 • committed by Avi Kivity

parent 59c1f4e35c

commit 9973d54eea

1 changed files with 94 additions and 9 deletions

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arch/powerpc/kvm/e500_tlb.c

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