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S390: dont call system_shutdown on disabled wait 

A disabled wait usually indicates a guest problem. Dont shutdown the
guest to allow guest dumping.
Have some special cases, e.g. a quiesce disabled wait. In that case
we want to shutdown.

Long term solution might be a crashed/panic indication.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Christian Borntraeger 2012-04-22 23:52:25 +00:00 committed by Alexander Graf
parent ad0bbc5600
commit eca3ed0343
1 changed files with 12 additions and 0 deletions
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12
target-s390x/kvm.c
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@ -407,6 +407,12 @@ static int handle_instruction(CPUS390XState *env, struct kvm_run *run)
return 0;
}
static bool is_special_wait_psw(CPUS390XState *env)
{
/* signal quiesce */
return env->kvm_run->psw_addr == 0xfffUL;
}
static int handle_intercept(CPUS390XState *env)
{
struct kvm_run *run = env->kvm_run;
@ -420,6 +426,12 @@ static int handle_intercept(CPUS390XState *env)
r = handle_instruction(env, run);
break;
case ICPT_WAITPSW:
if (s390_del_running_cpu(env) == 0 &&
is_special_wait_psw(env)) {
qemu_system_shutdown_request();
}
r = EXCP_HALTED;
break;
case ICPT_CPU_STOP:
if (s390_del_running_cpu(env) == 0) {
qemu_system_shutdown_request();