linux-kernel - Re: 2.6.39-rc5-git2 boot crashs

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Date:	Tue, 3 May 2011 21:08:22 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	werner <w.landgraf@...ru>, "H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: 2.6.39-rc5-git2 boot crashs


* Linus Torvalds <torvalds@...ux-foundation.org> wrote:

> > No problem with unzip / zip / moving big files etc, , so that this problem 
> > cames from X86_EXTENDED_PLATTFORM.
> 
> Ok, that is very interesting.

I have no smart ideas straight away - just an observation: i keep testing 
CONFIG_X86_ELAN=y on real hardware, and it's enabled in about 4% of my configs:

 sirius:~/linux/linux2/configs> grep -h MELAN * | sort | uniq -c
     358 # CONFIG_MELAN is not set
      15 CONFIG_MELAN=y

and i booted a few recently:

 sirius:~/linux/linux2/configs> grep -l MELAN=y *
 config-Mon_May__2_13_30_09_CEST_2011.good
 config-Mon_May__2_15_02_43_CEST_2011.good
 config-Mon_May__2_15_59_10_CEST_2011.good
 config-Mon_May__2_16_19_49_CEST_2011.good
 config-Mon_May__2_16_41_15_CEST_2011.good
 config-Mon_May__2_18_10_56_CEST_2011.good
 config-Mon_May__2_19_07_32_CEST_2011.good
 config-Mon_May__2_19_28_56_CEST_2011.good
 config-Mon_May__2_19_52_30_CEST_2011.good
 config-Mon_May__2_21_40_44_CEST_2011.good
 config-Mon_May__2_21_52_04_CEST_2011.good
 config-Mon_May__2_23_43_29_CEST_2011.good
 config-Sun_May__1_21_21_06_CEST_2011.good
 config-Sun_May__1_22_15_02_CEST_2011.good
 config-Tue_May__3_14_45_15_CEST_2011.good

(Note: CONFIG_X86_ELAN got renamed to CONFIG_MELAN recently.)

So whatever the breakage is, it's not just some 'nobody tests CONFIG_MELAN=y' 
easy breakage, but possibly something more configuration (or test) specific.

Thanks,

	Ingo
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