linux-kernel - Re: [RFC/GIT PULL] Linux KVM tool for v3.2

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Date:	Fri, 4 Nov 2011 09:02:25 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Pekka Enberg <penberg@...nel.org>
Cc:	Christoph Hellwig <hch@...radead.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Avi Kivity <avi@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org
Subject: Re: [RFC/GIT PULL] Linux KVM tool for v3.2

On Fri, Nov 04, 2011 at 02:35:18PM +0200, Pekka Enberg wrote:
> We are reusing kernel code and headers and I am not interested in
> copying them over. Living in the kernel tree is part of the design,
> whether you like it or not.

That's pretty much a blanko argument for throwing everything into the
kernel.  What's next, throwing your jvm into the kernel because you like
some kernel helpers?

We've been through this a few times - there is no reason why a tool
using the KVM ioctls should be considered close to the kernel - all
other users get away just fine staying out of tree, and that has
helped to keep the ABI stable.

This sounds more like you should create a libkernelutil with useful
data structures we use in the kernel for userspace programs.  I'd love
to use that for a few projects, btw.

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