> @@ -347,14 +330,13 @@ static const VMStateDescription vmstate_hpet = { > .version_id = 2, > .minimum_version_id = 1, > .pre_save = hpet_pre_save, > - .pre_load = hpet_pre_load, > .post_load = hpet_post_load, > .fields = (const VMStateField[]) { > VMSTATE_UINT64(config, HPETState), > VMSTATE_UINT64(isr, HPETState), > VMSTATE_UINT64(hpet_counter, HPETState), > - VMSTATE_UINT8_V(num_timers, HPETState, 2), > - VMSTATE_VALIDATE("num_timers in range", hpet_validate_num_timers), > + VMSTATE_UINT8_V(num_timers_save, HPETState, 2),
This change is safe since it doesn't change the vmstate layout so that there's no need for bumping up the version. But I still have the question as the comment in v1 [*]. User doesn't have any way to modify the number of timers, why not just replace this vmstate field with "VMSTATE_UNUSED_V(2, 1)"? Or do you think we should keep the status quo for the future use, even if these properties have not been modified yet? [*]: https://lore.kernel.org/qemu-devel/z5oq4lppnun7n...@intel.com/ > + VMSTATE_VALIDATE("num_timers must match", hpet_validate_num_timers), > VMSTATE_STRUCT_VARRAY_UINT8(timer, HPETState, num_timers, 0, > vmstate_hpet_timer, HPETTimer), > VMSTATE_END_OF_LIST() > -- > 2.48.1 > >