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| author | Paolo Bonzini | 2016-02-23 12:51:19 +0100 |
|---|---|---|
| committer | Paolo Bonzini | 2016-03-08 12:33:38 +0100 |
| commit | 6bb69c9b69c315200ddc2bc79aee14c0184cf5b2 (patch) | |
| tree | c7023298fd90cabf3532b45afa31c03e71fdd604 /mm/huge_memory.c | |
| 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>
Diffstat (limited to 'mm/huge_memory.c')
0 files changed, 0 insertions, 0 deletions