Re: [Qemu-devel] [PATCH v1 1/2] qdev-monitor.c: Register reset function if the device has one

[Paolo Bonzini]

On 19/02/2016 11:55, Peter Maydell wrote:
>> Any abstraction we have in QEMU should have at least a parallel (though
>> > it need not be the same) in real hardware.  Reset signals _do_ propagate
>> > along buses, or at least along some buses, so "debusifying" reset seems
>> > like a counterproductive goal to me.
> Reset for some buses propagates along buses, but not in all
> cases.

Agreed.  But still this doesn't change the fact that "debusifying" reset
is a non-goal.

> In any case our current "reset" semantics are "power on
> reset", not any kind of driven-by-hardware-reset-lines reset.

It depends.  There are several cases (PCI, SCSI) where qdev_reset_all is
used from within the code in order to provide hardware reset semantics.

Paolo