linux-kernel - Re: Latest tip kernel(3.2-rc1-tip_cf6b3899) fails to boot on x3850x5 machine

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Message-ID: <20111218083245.GE4144@elte.hu>
Date:	Sun, 18 Dec 2011 09:32:45 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Suresh Siddha <suresh.b.siddha@...el.com>
Cc:	Yinghai Lu <yinghai@...nel.org>,
	Nikunj A Dadhania <nikunj@...ux.vnet.ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>,
	"x86@...nel.org" <x86@...nel.org>,
	Joerg Roedel <joerg.roedel@....com>
Subject: Re: Latest tip kernel(3.2-rc1-tip_cf6b3899) fails to boot on x3850x5
 machine


* Suresh Siddha <suresh.b.siddha@...el.com> wrote:

> On Fri, 2011-12-16 at 00:36 -0800, Ingo Molnar wrote:
> > The problem is spuriously re-asking a question that *has already 
> > been answered by the user*, and if the user accidentally just 
> > accepts the default, the config breaks.
> > 
> > We try to keep things working fine across 'make oldconfig', i.e. 
> > if the .config worked before, it should work after a 'make 
> > oldconfig' as well.
> > 
> 
> Ok. So what is the recommended way to do this, for example when we
> change a config option name with no other dependency changes etc?

Firstly, we try hard not to change existing config option names 
if possible :-)

Now that it's done i doubt there's any real good option left: 
some people have the old config, some have the new. We'll see 
how many others are affected, if it's widespread we can 
reintroduce the old option or just default-on the feature if 
there's some other related feature that was not renamed.

Thanks,

	Ingo
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