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Re: [Qemu-devel] [PATCH] qdev: Keep global allocation counter per bus


From: Paolo Bonzini
Subject: Re: [Qemu-devel] [PATCH] qdev: Keep global allocation counter per bus
Date: Thu, 05 Dec 2013 11:33:06 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130923 Thunderbird/17.0.9

Il 05/12/2013 10:44, Markus Armbruster ha scritto:
> Incompatible change: device ide-cd moved to a different controller.

Yes, it should be stated in the commit message but it's expected as
discussed yesterday on IRC.  The solution is not to use "-device" (which
was broken) if you care about backwards compatibility; use "-drive if=ide".

> Great fun when you try to live migrate across your patch.
> 
> I'd expect isapc to have the same issue once its crash bug is fixed.
> 
> First law of QEMU hacking: if your patch looks simple, it's probably
> wrong ;)

Yes, the question is how wrong and how the wrong balances the right.

Paolo



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