linux-kernel - Re: [git pull] x86 arch updates for v2.6.25

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Date:	Tue, 05 Feb 2008 09:52:56 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	John Stoffel <john@...ffel.org>
CC:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Maxim Levitsky <maximlevitsky@...il.com>,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [git pull] x86 arch updates for v2.6.25

John Stoffel wrote:
> 
> Linus> So I'd merge a patch that puts oops information (or the whole
> Linus> console printout) in the Intel management stuff in a
> Linus> heartbeat. 
> 
> How about we put in some sort of console logging tool so we can buffer
> and log the console output better?  Currently if I have both a serial
> and tty console defined, my GDM prompter looses the mouse until I goto
> the XDMCP chooser and back again.  
> 
> I'm pretty sure it's a GDM problem, since Xdm doesn't have this issue
> at all.  Haven't had time to chase it though.
> 
> In any case, having some way to log oopses better would be really
> nice.  Not sure how we could do it reliably for suspend/resume needs
> on laptops without dedicated management hardware like the ILOM stuff
> on Intel/Sun boxes.  
> 

Hm.  Dumping oops information plus perhaps even a memory dump to a USB 
key sounds like it would be highly useful - lots of storage capacity, 
readily available, and can be plugged into just about any system.

I don't know if the backdoor debugging mode in EHCI can be used for 
that.  Either way, this would have to be done *very* carefully to avoid 
clobbering USB devices not intended for this purpose.

	-hpa
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