Block SIG_IPI, unblock it during KVM_RUN, just like in io-thread mode.
It's unused so far, but this infrastructure will be required for
self-IPIs and to process SIGBUS plus, in KVM mode, SIGIO and SIGALRM. As
Windows doesn't support signal services, we need to provide a stub for
the init function.
Signed-off-by: Jan Kiszka<address@hidden>
---
cpus.c | 13 +++++++++++--
1 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/cpus.c b/cpus.c
index 16bd8fa..03c89b4 100644
--- a/cpus.c
+++ b/cpus.c
@@ -231,7 +231,6 @@ fail:
return err;
}
-#ifdef CONFIG_IOTHREAD
static void dummy_signal(int sig)
{
}
@@ -246,6 +245,12 @@ static void qemu_kvm_init_cpu_signals(CPUState *env)
sigact.sa_handler = dummy_signal;
sigaction(SIG_IPI,&sigact, NULL);
+#ifndef CONFIG_IOTHREAD
+ sigemptyset(&set);
+ sigaddset(&set, SIG_IPI);
+ pthread_sigmask(SIG_BLOCK,&set, NULL);
+#endif
+
pthread_sigmask(SIG_BLOCK, NULL,&set);
sigdelset(&set, SIG_IPI);
sigdelset(&set, SIGBUS);
@@ -255,7 +260,6 @@ static void qemu_kvm_init_cpu_signals(CPUState *env)
exit(1);
}
}
-#endif
#else /* _WIN32 */
@@ -284,6 +288,10 @@ static void qemu_event_increment(void)
exit (1);
}
}
+
+static void qemu_kvm_init_cpu_signals(CPUState *env)
+{
+}
#endif /* _WIN32 */
#ifndef CONFIG_IOTHREAD
@@ -312,6 +320,7 @@ void qemu_init_vcpu(void *_env)
fprintf(stderr, "kvm_init_vcpu failed: %s\n", strerror(-r));
exit(1);
}
+ qemu_kvm_init_cpu_signals(env);
}
}