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Re: [Qemu-devel] [PATCH v4 00/15] uq/master: Introduce basic irqchip sup

From: Jan Kiszka
Subject: Re: [Qemu-devel] [PATCH v4 00/15] uq/master: Introduce basic irqchip support
Date: Mon, 12 Dec 2011 18:42:43 +0100
User-agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv: Gecko/20080226 SUSE/ Thunderbird/ Mnenhy/

On 2011-12-12 18:37, Avi Kivity wrote:
> On 12/12/2011 06:51 PM, Jan Kiszka wrote:
>>> Any thoughts on the qemu-kvm merge plan? Sounds painful.
>> Pain will be where the existing qemu-kvm extensions collide with these
>> refactored upstream devices (backend/frontend split specifically).
>> That's where we have to merge very carefully. Haven't tried this yet,
>> will give it a spin tomorrow or so.
>> From that point on, disabling the new stuff for now and at some point
>> switching over from the old one should be simple again.
>> BTW, PIT+HPET+speaker will cause similar issues for the same reasons.
> It's a little late for this, but refactoring qemu-kvm in-tree and then
> splitting it into patches would have been easier.  Let's try it this way
> for the next batch.

I thought about this, but it definitely takes a clean, qemu-kvm free
base as start. The point is to design something free of all the legacy,
only looking at the other code base to extract the logic.

Moreover, there was and still is quite some upstream cleanup necessary,
and that never goes well with the delta of qemu-kvm.


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Corporate Competence Center Embedded Linux

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