s390x/kvm: execute "system reset" cpu resets on the vcpu thread

Let's execute resets triggered by qemu system resets on the target vcpu thread.
This will avoid synchronize_rcu's in the kernel.

Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

diff --git a/target-s390x/cpu.c b/target-s390x/cpu.c
index c3082b7..4633282 100644 (file)
--- a/target-s390x/cpu.c
+++ b/target-s390x/cpu.c
@@ -165,7 +165,7 @@ static void s390_cpu_machine_reset_cb(void *opaque)
 {
     S390CPU *cpu = opaque;
 
-    cpu_reset(CPU(cpu));
+    run_on_cpu(CPU(cpu), s390_do_cpu_full_reset, CPU(cpu));
 }
 #endif