linux-kernel - Re: [tip:x86/urgent] x86/kconfig: Add a Kconfig shortcut for building working KVM guest kernels

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Date:	Thu, 2 May 2013 09:06:33 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Borislav Petkov <bp@...en8.de>,
	David Rientjes <rientjes@...gle.com>,
	linux-kernel@...r.kernel.org, Pekka Enberg <penberg@...nel.org>,
	levinsasha928@...il.com, mtosatti@...hat.com, tglx@...utronix.de,
	Borislav Petkov <bp@...e.de>, fengguang.wu@...el.com,
	linux-tip-commits@...r.kernel.org
Subject: Re: [tip:x86/urgent] x86/kconfig:  Add a Kconfig shortcut for
 building working KVM guest kernels


* H. Peter Anvin <hpa@...or.com> wrote:

> On 05/01/2013 04:02 PM, Borislav Petkov wrote:
> > On Wed, May 01, 2013 at 03:37:28PM -0700, David Rientjes wrote:
> >> It means your patch is incomplete.
> > 
> > I'll gladly test and ack a patch which makes it complete.
> > 
> > Simple exercises in rhetoric about what does and what doesn't make 
> > sense means a rat's ass to me. You need to show me a *real* use case 
> > which you *actually* hit and this patch breaks it.
> 
> The fundamental problem is that "select" is broken and doesn't track 
> dependencies of things selected.

The way I've been solving it in a similar usecase was to select the 
required options - plus its dependencies, manually.

That should be possible here as well, driven by any weird randconfig build 
failures that get found. Such a set of selects quickly converges.

Thanks,

	Ingo
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