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

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Date:	Thu, 18 Nov 2010 14:06:39 -0800
From:	Greg KH <greg@...ah.com>
To:	S.Çağlar Onur <caglar@...Princeton.EDU>
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)

On Thu, Nov 18, 2010 at 04:59:12PM -0500, "S.Çağlar Onur" wrote:
> 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...

Heh, ok, I'll go drop it now :)

that's what I get for trying to be quick...

thanks,

greg k-h
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