linux-kernel - Re: [PATCH 05/05] x86: Rename paravirtualized TSC functions

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Message-ID: <20080710081206.GA4819@elte.hu>
Date:	Thu, 10 Jul 2008 10:12:06 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Yinghai Lu <yhlu.kernel@...il.com>
Cc:	akataria@...are.com, Thomas Gleixner <tglx@...utronix.de>,
	the arch/x86 maintainers <x86@...nel.org>,
	Daniel Hecht <dhecht@...are.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Jeremy Fitzhardinge <jeremy@...p.org>
Subject: Re: [PATCH 05/05] x86: Rename paravirtualized TSC functions


* Yinghai Lu <yhlu.kernel@...il.com> wrote:

> first round bisect all works..
> 
> it seems make oldconfig change setting between different setting...

yeah. The thing i do is this: i create a .config.bisect and at every 
bisection step i copy it into .config and do a 'make oldconfig'.

this means that options are picked up again, even if a 'dive back into 
the past' causes a bisection point to lose a config setting.

> 
> diff .config config.full.good
> 4c4
> < # Thu Jul 10 00:52:52 2008
> ---
> > # Thu Jul 10 00:40:03 2008
> 295,296c295
> < CONFIG_CC_STACKPROTECTOR_ALL=y
> < CONFIG_CC_STACKPROTECTOR=y
> ---
> > # CONFIG_CC_STACKPROTECTOR is not set
> 
> it seems some recent change doesn't like stackprotector.

then my guess would be on:

 89d7bb5: x86_64: add workaround for no %gs-based percpu

you might want to try your luck and revert that one alone from latest 
tip/master.

	Ingo
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