| commit | 3553ae5690a84a5baae5baa329467b3df2d99f72 | [log] [tgz] |
|---|---|---|
| author | Waiman Long <longman@redhat.com> | Tue Jul 17 17:59:27 2018 -0400 |
| committer | Paolo Bonzini <pbonzini@redhat.com> | Mon Aug 06 17:59:04 2018 +0200 |
| tree | 336d0d26cfb9af7c6c0ef2c9ce7d835e2fcf1e7a | |
| parent | 450917b654c12075bd2b07d1e375dfed1bc9ca1e [diff] |
x86/kvm: Don't use pvqspinlock code if only 1 vCPU On a VM with only 1 vCPU, the locking fast path will always be successful. In this case, there is no need to use the the PV qspinlock code which has higher overhead on the unlock side than the native qspinlock code. Signed-off-by: Waiman Long <longman@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>