linux-kernel - Re: Fwd: Fwd: laptop / computer hardlocks during execution of 32bit applications(binaries) on 64bit system (Gentoo)

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Date:	Tue, 15 Jan 2008 18:41:34 -0500
From:	Ed Tomlinson <edt@....ca>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Matthew <jackdachef@...il.com>, "H. Peter Anvin" <hpa@...or.com>,
	linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Roland McGrath <roland@...hat.com>
Subject: Re: Fwd: Fwd: laptop / computer hardlocks during execution of 32bit applications(binaries) on 64bit system (Gentoo)

On January 15, 2008, Ingo Molnar wrote:
> 
> * Ed Tomlinson <edt@....ca> wrote:
> 
> > This is _not_ a regression.  This has been occuring for ages here.  A 
> > backport of this fix to 2.6.23 would be a very good thing - IMHO its 
> > something that should go into stable asap.
> 
> the problem is that this bug was only present in x86.git. I.e. neither 
> 2.6.24 nor 2.6.23 has this particular bug.
> 
> perhaps something else in x86.git fixed your box, but this 
> x86.git-specific hang 'took over its place', and now that it got fixed, 
> you've got a working box? In any case, please monitor your box, it might 
> still lock up the same way it did previously ...

I am now testing with a .24-rc7+fix  kernel.  So far so good.  Running gentoo's 32 bit
firefox with flash 9 is a good way to trigger the problem here as is running Delftship (freeship)
under wine.  The problem is usually worst with a fully preemptive kernel.  I have been using both on 
a kernel with preempt and have an uptime of 22 hours - this is really good.   I have rarely been able 
to get this much uptime using these apps.  If it manages to run for a few more days without a lockup 
it would really be worth trying to figure out what in .24 fixes the problem...

THANKS!
Ed Tomlinson
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