linux-kernel - Re: [regression, bisected] x86: efi: Pass boot services variable info to runtime code

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Date:	Mon, 27 May 2013 21:43:23 -0500
From:	Russ Anderson <rja@....com>
To:	joeyli <jlee@...e.com>
Cc:	Dave Jones <davej@...hat.com>, Robin Holt <holt@....com>,
	Matt Fleming <matt@...sole-pimps.org>,
	Matthew Garrett <matthew.garrett@...ula.com>,
	matt.fleming@...el.com, linux-efi@...r.kernel.org, x86@...nel.org,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...ux.intel.com>,
	Borislav Petkov <bp@...en8.de>
Subject: Re: [regression, bisected] x86: efi: Pass boot services variable
	info to runtime code

On Mon, May 27, 2013 at 12:27:12PM +0800, joeyli wrote:
> Hi Dave, 
> 
> 於 五，2013-05-24 於 17:05 -0400，Dave Jones 提到：
> > On Fri, May 24, 2013 at 12:02:15PM -0500, Russ Anderson wrote:
> >  > On Fri, May 24, 2013 at 11:11:11AM -0500, Robin Holt wrote:
> >  > > Russ,
> >  > > 
> >  > > Can we open a bug for the BIOS folks and see if we can get this addressed?
> >  > 
> >  > I already talked with them.  It is not in an area that we
> >  > normally change, so if there is a bug may be in the Intel
> >  > reference code.  More investigation is needed to track down
> >  > the actual problem, and that could take help from Intel.
> >  > 
> >  > Regardless of that, it is a kernel patch that triggers the
> >  > problem.  This isn't the first time a kernel change does
> >  > the "right thing" but trips across questionable bios/EFI/bootloader
> >  > implementation.  That still makes it a kernel bug.
> >  > 
> >  > I'm still digging to better understand the root problem.
> >  
> > When we rebased the Fedora 18 kernel to 3.9 we had a bunch of reports
> > from people who can no longer boot with what looks like similar symptoms.
> > 
> > https://bugzilla.redhat.com/show_bug.cgi?id=964335
> > 
> > 	Dave
> > 
> 
> The oops on the above bug is similar to my problem on Acer machine,
> could you please ask the reporter try the eccaf52f patch in urgent
> branch on Matt's efi git tree:
> 
> https://git.kernel.org/cgit/linux/kernel/git/mfleming/efi.git/commit/?h=urgent&id=eccaf52fee8305d5207ff110950a82c100e459bc

I tried that patch, but it does not fix the problem.

Thanks for the suggestion.


-- 
Russ Anderson, OS RAS/Partitioning Project Lead  
SGI - Silicon Graphics Inc          rja@....com
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