Introduce reset notifier order

Add the parameter 'order' to qemu_register_reset and sort callbacks on
registration. On system reset, callbacks with lower order will be
invoked before those with higher order. Update all existing users to the
standard order 0.

Note: At least for x86, the existing users seem to assume that handlers
are called in their registration order. Therefore, the patch preserves
this property. If someone feels bored, (s)he could try to identify this
dependency and express it properly on callback registration.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/hw/hw.h b/hw/hw.h
index dd11f0a242..a3f5717b3e 100644
--- a/hw/hw.h
+++ b/hw/hw.h
@@ -258,7 +258,7 @@ void unregister_savevm(const char *idstr, void *opaque);
 
 typedef void QEMUResetHandler(void *opaque);
 
-void qemu_register_reset(QEMUResetHandler *func, void *opaque);
+void qemu_register_reset(QEMUResetHandler *func, int order, void *opaque);
 
 /* handler to set the boot_device for a specific type of QEMUMachine */
 /* return 0 if success */