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| author | Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> | 2010-04-23 10:48:35 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-05-17 11:19:13 +0200 |
| commit | d14769377a247d4e7b570592a090474c8a059938 (patch) | |
| tree | fd7e0de9712a29f99962b789ab3ab70a1338087f /virt/kvm/eventfd.c | |
| parent | KVM: Document mmu (diff) | |
| download | linux-d14769377a247d4e7b570592a090474c8a059938.tar.xz linux-d14769377a247d4e7b570592a090474c8a059938.zip | |
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>
Diffstat (limited to 'virt/kvm/eventfd.c')
0 files changed, 0 insertions, 0 deletions