On 08/30/2011 10:19 PM, Blue Swirl wrote:
>
> We need some kind of two phase restore. In the first phase all state is
> restored; since some of that state drivers outputs that are input to other
> devices, they may experience an edge, and we need to supress that. In the
> second phase edge detection is unsupressed and the device goes live.
No. Devices may not perform any externally visible activities (like
toggle a qemu_irq) during or after load because 1) qemu_irq is
stateless and 2) since the receiving end is also freshly loaded, both
states are already in synch without any calls or toggling.
That makes it impossible to migrate level-triggered irq lines. Or at
least, the receiver has to remember the state, instead of (or in
addition to) the sender.
--
error compiling committee.c: too many arguments to function
