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, 2 insertions, 2 deletions

diff --git a/hw/pc.c b/hw/pc.c
index e9682fadf2..faaa60fe8c 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -81,7 +81,7 @@ static void option_rom_setup_reset(target_phys_addr_t addr, unsigned size)
     cpu_physical_memory_read(addr, rrd->data, size);
     rrd->addr = addr;
     rrd->size = size;
-    qemu_register_reset(option_rom_reset, rrd);
+    qemu_register_reset(option_rom_reset, 0, rrd);
 }
 
 static void ioport80_write(void *opaque, uint32_t addr, uint32_t data)
@@ -875,7 +875,7 @@ static void pc_init1(ram_addr_t ram_size,
             /* XXX: enable it in all cases */
             env->cpuid_features |= CPUID_APIC;
         }
-        qemu_register_reset(main_cpu_reset, env);
+        qemu_register_reset(main_cpu_reset, 0, env);
         if (pci_enabled) {
             apic_init(env);
         }