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bf1e15a82e
The main thread could start to send SIG_IPI at any time, even before signal blocked on vcpu thread. Therefore, start the vcpu thread with the signal blocked. Without this patch, on very busy cores the dirty_log_test could fail directly on receiving a SIGUSR1 without a handler (when vcpu runs far slower than main). Reported-by: Peter Xu <peterx@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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