diff options
| author |   Sean Christopherson <seanjc@google.com> | 2021-12-08 01:52:34 +0000 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2022-02-10 13:47:09 -0500 |
| commit | f15756428ded1ee01d95934057a6e89c2d450bbb (patch) | |
| tree | 3c58449a1758a3b8488602afd75ca33e2186662b /tools/perf/scripts/python | |
| parent | KVM: x86: Drop NULL check on kvm_x86_ops.check_apicv_inhibit_reasons (diff) | |
KVM: x86: Skip APICv update if APICv is disable at the module level
Bail from the APICv update paths _before_ taking apicv_update_lock if
APICv is disabled at the module level. kvm_request_apicv_update() in
particular is invoked from multiple paths that can be reached without
APICv being enabled, e.g. svm_enable_irq_window(), and taking the
rw_sem for write when APICv is disabled may introduce unnecessary
contention and stalls.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20211208015236.1616697-25-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions