linux-kernel - Re: [PATCH v2 3/3] i387: support lazy restore of FPU state

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Message-ID: <4F43DB69.9060509@zytor.com>
Date:	Tue, 21 Feb 2012 09:59:05 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	Josh Boyer <jwboyer@...il.com>,
	Jongman Heo <jongman.heo@...sung.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 3/3] i387: support lazy restore of FPU state

On 02/20/2012 09:27 PM, Linus Torvalds wrote:
> 
> IOW, if you can try this on top of current -git, that would be lovely.
> 

This passed all my build tests overnight.

I don't know if unlazy_fpu() being out of line will cause a context
switch performance loss, though.

Otherwise:

Acked-by: H. Peter Anvin <hpa@...or.com>

Let me know if you'd prefer me to pull this into the -tip tree.

	-hpa


-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

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