[Qemu-devel] [PATCH v1 07/27] s390x/tcg: STOPPED cpus can never wake up

[David Hildenbrand]

Interrupts can't wake such CPUs up. SIGP from other CPUs has to be used
to toggle the state.

Signed-off-by: David Hildenbrand <address@hidden>
---
 target/s390x/cpu.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
index f42e28ea25..64db086702 100644
--- a/target/s390x/cpu.c
+++ b/target/s390x/cpu.c
@@ -58,6 +58,12 @@ static bool s390_cpu_has_work(CPUState *cs)
     S390CPU *cpu = S390_CPU(cs);
     CPUS390XState *env = &cpu->env;
 
+    /* STOPPED cpus can never wake up */
+    if (s390_cpu_get_state(cpu) != CPU_STATE_LOAD &&
+        s390_cpu_get_state(cpu) != CPU_STATE_OPERATING) {
+        return false;
+    }
+
     return (cs->interrupt_request & CPU_INTERRUPT_HARD) &&
            (env->psw.mask & PSW_MASK_EXT);
 }
-- 
2.13.5