| commit | 8e205a6b2a06764a4c2bfc9e1a6a8a8e7920faf8 | [log] [tgz] |
|---|---|---|
| author | Paolo Bonzini <pbonzini@redhat.com> | Sat Mar 14 12:29:23 2020 +0100 |
| committer | Paolo Bonzini <pbonzini@redhat.com> | Mon Mar 16 17:58:59 2020 +0100 |
| tree | f28323015730289c4f9d57a023bd404ab016cf30 | |
| parent | 212617dbb6bac2a21dec6ef7d6012d96bb6dbb5d [diff] |
KVM: X86: correct meaningless kvm_apicv_activated() check After test_and_set_bit() for kvm->arch.apicv_inhibit_reasons, we will always get false when calling kvm_apicv_activated() because it's sure apicv_inhibit_reasons do not equal to 0. What the code wants to do, is check whether APICv was *already* active and if so skip the costly request; we can do this using cmpxchg. Reported-by: Miaohe Lin <linmiaohe@huawei.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>