[Qemu-devel] Re: [PATCH 1/6] Make fw_cfg interface 32-bit aware

[Anthony Liguori <anthony@codemonkey.ws>]

Alexander Graf wrote:
> Juan, I'd really love to learn some new voodoo :-).
> This whole new qdev whatever based save format was supposed to make 
> things like this easy, right? I would've known what to do with the old 
> code ...

I think Juan's mentioned something about writing a doc explaining how to 
use VMState correctly.  I think it would certainly be helpful for 
situations like this.

But the most important part of VMState is that it converts something 
that was previously open coded and opaque to something that is 
data-driven and introspectable.  I think it's done an extremely good job 
of achieving those goals.   As we get everything converted, we can 
potentially figure out some ways to make this all a bit easier to 
understand.  Right now, I think how we support backwards compatibility 
is admittedly awkward.

Regards,

Anthony Liguori

> Alex