kvm: Rework VCPU reset

Use standard callback with highest order to synchronize VCPU on reset
after all device callbacks were execute. This allows to remove the
special kvm hook in qemu_system_reset.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

kvm-all.c

@@ -22,6 +22,7 @@
 
 #include "qemu-common.h"
 #include "sysemu.h"
+#include "hw/hw.h"
 #include "gdbstub.h"
 #include "kvm.h"
 
@@ -376,6 +377,11 @@ int kvm_check_extension(KVMState *s, unsigned int extension)
     return ret;
 }
 
+static void kvm_reset_vcpus(void *opaque)
+{
+    kvm_sync_vcpus();
+}
+
 int kvm_init(int smp_cpus)
 {
     KVMState *s;
@@ -462,6 +468,8 @@ int kvm_init(int smp_cpus)
     if (ret < 0)
         goto err;
 
+    qemu_register_reset(kvm_reset_vcpus, INT_MAX, NULL);
+
     kvm_state = s;
 
     return 0;

vl.c

@@ -3659,8 +3659,6 @@ void qemu_system_reset(void)
     for(re = first_reset_entry; re != NULL; re = re->next) {
         re->func(re->opaque);
     }
-    if (kvm_enabled())
-        kvm_sync_vcpus();
 }
 
 void qemu_system_reset_request(void)