| commit | 6bb69c9b69c315200ddc2bc79aee14c0184cf5b2 | [log] [tgz] |
|---|---|---|
| author | Paolo Bonzini <pbonzini@redhat.com> | Tue Feb 23 12:51:19 2016 +0100 |
| committer | Paolo Bonzini <pbonzini@redhat.com> | Tue Mar 08 12:33:38 2016 +0100 |
| tree | c7023298fd90cabf3532b45afa31c03e71fdd604 | |
| parent | 50c9e6f3a69dfa458ecb671bcbd11e2eea6db0c1 [diff] |
KVM: MMU: simplify last_pte_bitmap Branch-free code is fun and everybody knows how much Avi loves it, but last_pte_bitmap takes it a bit to the extreme. Since the code is simply doing a range check, like (level == 1 || ((gpte & PT_PAGE_SIZE_MASK) && level < N) we can make it branch-free without storing the entire truth table; it is enough to cache N. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>