linux-kernel - Re: [PATCH 10/11] x86: make lazy %gs optional on x86

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Message-ID: <4990DD97.5090705@goop.org>
Date:	Mon, 09 Feb 2009 17:51:19 -0800
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Tejun Heo <tj@...nel.org>
CC:	hpa@...or.com, tglx@...utronix.de, mingo@...e.hu,
	linux-kernel@...r.kernel.org, x86@...nel.org,
	rusty@...tcorp.com.au, Jeremy Fitzhardinge <jeremy@...source.com>
Subject: Re: [PATCH 10/11] x86: make lazy %gs optional on x86_32

Tejun Heo wrote:
> Hmmm... I was (lazily) trying to add that %gs can only be cleared if
> it's being managed lazily because otherwise it might be being used by
> the kernel for other purposes.  :-)
>
> Is my understanding correct?

Oh, hm, I see.  We only want to zero it if we're using lazy gs, 
otherwise it contains something useful...  I need to run now, but I'll 
look at it again in a few hours.

    J
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