From 4beab671464450a8d2bd1d521b64ae6ab841a886 Mon Sep 17 00:00:00 2001 From: David Hildenbrand Date: Thu, 28 Sep 2017 22:36:44 +0200 Subject: [PATCH] s390x/tcg: STOPPED cpus can never wake up Interrupts can't wake such CPUs up. SIGP from other CPUs has to be used to toggle the state. Reviewed-by: Richard Henderson Signed-off-by: David Hildenbrand Message-Id: <20170928203708.9376-7-david@redhat.com> Signed-off-by: Cornelia Huck --- target/s390x/cpu.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c index b0517475fa..a21d5519c1 100644 --- a/target/s390x/cpu.c +++ b/target/s390x/cpu.c @@ -57,6 +57,12 @@ static bool s390_cpu_has_work(CPUState *cs) { S390CPU *cpu = S390_CPU(cs); + /* 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; + } + if (!(cs->interrupt_request & CPU_INTERRUPT_HARD)) { return false; } -- 2.30.2