linux-kernel - Re: [stable] Boot failure with 2.6.27.46 on Xeon E5620 (Westmere EP)

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Message-Id: <42E89D5B-D2D6-42E5-A218-B538968FF6E5@CS.Princeton.EDU>
Date:	Thu, 18 Nov 2010 16:59:12 -0500
From:	"S.Çağlar Onur" 
	<caglar@...Princeton.EDU>
To:	Greg KH <greg@...ah.com>
Cc:	Youquan Song <youquan.song@...ux.intel.com>,
	Suresh Siddha <suresh.b.siddha@...el.com>,
	"stable@...nel.org" <stable@...nel.org>,
	"hpa@...or.com" <hpa@...or.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"Song, Youquan" <youquan.song@...el.com>
Subject: Re: [stable] Boot failure with 2.6.27.46 on Xeon E5620 (Westmere EP)

Hi Greg,

On Nov 18, 2010, at 4:54 PM, Greg KH wrote:

> On Thu, Nov 18, 2010 at 04:24:40PM -0500, "S.Çağlar Onur" wrote:
>> Hi Youquan & Greg,
>> 
>> 
>> On May 26, 2010, at 9:23 AM, Youquan Song wrote:
>> 
>>>>> I can't think of any known issues in 2.6.27 that can lead to this kind
>>>>> of boot failure on WSM-EP. Caglar, It will be nice if you can do git
>>>>> bisect between working and non-working kernels.
>>>> 
>>>> Sure, I'll try to boot those with plain 2.6.27 to see but please note that it's going to be little time consuming. For each one I have to create a custom boot image for them to download and test (a.k.a. don't expect to hear from me soon :))
>>> 
>>> Hi Caglar,
>>> 
>>> What's the microcode version? Get by "dmesg | grep microcode" if you
>>> success boot other version of kernel.
>>> Can you try to disable C-state(C6) in BIOS before your boot 2.6.27?
>> 
>> First of all I'm really sorry that it took really long time to reply this mail as I was waiting Dell to send a loaner machine to us. This morning I've got the hardware and following patch solved the boot problem that I was observing, Greg could you consider adding that to 2.6.27-stable tree?
>> 
>> commit a0bf284bfedd6dc95bbee7ebf5ccf3b5f753a008
> 
> No problem, now queued up.

Umh please drop that patch for now, seems like I mixed my kernel configs and compiled/tested a 64 bit one (by the way 64bit kernel boots fine) but 32bit one still fails with the same error. I'll try to bisect...

> thanks,
> 
> greg k-h


Best,
--
S.Çağlar Onur <caglar@...princeton.edu>

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