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serial: register vmsd with DeviceClass 

Migration from old to new code works, however the other way fails for
devices that use serial_init/serial_mm_init with "base", used as
instance_id previously.

(with qdev_set_legacy_instance_id, the alias_id is only used in
savevm.c:find_se(), and thus can only be used to match against
"legacy" instance id values. On new code, instance_id is generated
incrementally from 0 with calculate_new_instance_id(), based on
"qdev-path/vmsd-name")

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: xiaoqiang zhao <zxq_yx_007@163.com>
This commit is contained in:
Marc-André Lureau 2019-10-22 00:32:41 +02:00
parent 7781b88ee4
commit 4cc017e505
1 changed files with 3 additions and 3 deletions
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6
hw/char/serial.c
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@ -990,8 +990,7 @@ SerialState *serial_init(int base, qemu_irq irq, int baudbase,
s->baudbase = baudbase;
qemu_chr_fe_init(&s->chr, chr, &error_abort);
serial_realize_core(s, &error_fatal);
vmstate_register(NULL, base, &vmstate_serial, s);
qdev_set_legacy_instance_id(dev, base, 2);
qdev_init_nofail(dev);
memory_region_init_io(&s->io, NULL, &serial_io_ops, s, "serial", 8);
@ -1006,6 +1005,7 @@ static void serial_class_init(ObjectClass *klass, void *data)
/* internal device for serialio/serialmm, not user-creatable */
dc->user_creatable = false;
dc->vmsd = &vmstate_serial;
}
static const TypeInfo serial_info = {
@ -1069,7 +1069,7 @@ SerialState *serial_mm_init(MemoryRegion *address_space,
qemu_chr_fe_init(&s->chr, chr, &error_abort);
serial_realize_core(s, &error_fatal);
vmstate_register(NULL, base, &vmstate_serial, s);
qdev_set_legacy_instance_id(dev, base, 2);
qdev_init_nofail(dev);
memory_region_init_io(&s->io, NULL, &serial_mm_ops[end], s,