Takuya Yoshikawa d14769377a KVM: Remove test-before-set optimization for dirty bits ...

As Avi pointed out, testing bit part in mark_page_dirty() was important
in the days of shadow paging, but currently EPT and NPT has already become
common and the chance of faulting a page more that once per iteration is
small. So let's remove the test bit to avoid extra access.

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Avi Kivity <avi@redhat.com>

2010-05-17 12:19:13 +03:00

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kvm

KVM: Remove test-before-set optimization for dirty bits

2010-05-17 12:19:13 +03:00