diff options
| -rw-r--r-- | cpus.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/cpus.c b/cpus.c index e02576cb66..3035314486 100644 --- a/cpus.c +++ b/cpus.c @@ -396,10 +396,18 @@ static int qemu_signal_init(void) sigaddset(&set, SIGUSR2); pthread_sigmask(SIG_UNBLOCK, &set, NULL); + /* + * SIG_IPI must be blocked in the main thread and must not be caught + * by sigwait() in the signal thread. Otherwise, the cpu thread will + * not catch it reliably. + */ + sigemptyset(&set); + sigaddset(&set, SIG_IPI); + pthread_sigmask(SIG_BLOCK, &set, NULL); + sigemptyset(&set); sigaddset(&set, SIGIO); sigaddset(&set, SIGALRM); - sigaddset(&set, SIG_IPI); sigaddset(&set, SIGBUS); #else sigemptyset(&set); |