The add_del/running_cpu code and env->halted are tracking stopped cpus.
Sleeping cpus (idle and enabled for interrupts) are waiting inside the
kernel.
No interrupt besides the restart can move a cpu from stopped to
operational. This is already handled over there. So lets just remove
the bogus wakup from the common interrupt delivery, otherwise any
interrupt will wake up a cpu, even if this cpu is stopped (Thus leading
to strange hangs on sigp restart)
This fixes
echo 0 > /sys/devices/system/cpu/cpu0/online
echo 1 > /sys/devices/system/cpu/cpu0/online
in the guest
Signed-off-by: Christian Borntraeger<borntrae...@de.ibm.com>
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -185,9 +185,6 @@ void kvm_s390_interrupt_internal(CPUState *env, int type,
uint32_t parm,
return;
}
- s390_add_running_cpu(env);
- qemu_cpu_kick(env);
-
kvmint.type = type;
kvmint.parm = parm;
kvmint.parm64 = parm64;
