linux-kernel - Re: [BUG -tip bisected] x86, mem: Optimize memcpy by avoiding memory false dependece

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Message-ID: <20100710204542.GA13334@Krystal>
Date:	Sat, 10 Jul 2010 16:45:42 -0400
From:	Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
To:	Maciej Rutecki <maciej.rutecki@...il.com>
Cc:	mingo@...e.hu, linux-kernel@...r.kernel.org,
	Ma Ling <ling.ma@...el.com>, "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [BUG -tip bisected] x86, mem: Optimize memcpy by avoiding
	memory false dependece

* Maciej Rutecki (maciej.rutecki@...il.com) wrote:
> On czwartek, 8 lipca 2010 o 00:03:25 Mathieu Desnoyers wrote:
> > Hi Ingo,
> > 
> > I just bisected the cause of boot hard lockup on my Intel Xeon E5405 to
> > this commit recently added to -tip:
> > 
> > a1e5278e40f16a4611264f8da9e557c16cb6f6ed is the first bad commit
> > Merge branch 'x86/mem'
> > 
> 
> I created a Bugzilla entry at 
> https://bugzilla.kernel.org/show_bug.cgi?id=16364
> for your bug report, please add your address to the CC list in there, thanks!

This bug report is incorrect. The problem does not affect mainline, as I caught
it in -tip and it has been reverted before it's been pulled into Linus tree.

Thanks,

Mathieu


-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com
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