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To: linux-kernel@vger.kernel.org
From: "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: cpu_has_fxsr or cpu_has_xmm?
Date: 22 Feb 2001 22:11:52 -0800
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Followup to:  <200102230538.VAA17793@mail23.bigmailbox.com>
By author:    "Quim K Holland" <qkholland@my-deja.com>
In newsgroup: linux.dev.kernel
>
> I've been looking at various -ac patches for the last couple of 
> weeks and have been wondering why only this piece of difference
> still remains between Linus' 2.4.2 and Alan's -ac2.  All the other
> diffs in i387.c from 2.4.1-ac2 seem to have been merged into Linus
> tree at around 2.4.2-pre1.  Could anybody explain it for me please?
> 
> --- linux.vanilla/arch/i386/kernel/i387.c       Thu Feb 22 09:05:35 2001
> +++ linux.ac/arch/i386/kernel/i387.c    Sun Feb  4 10:58:36 2001
> @@ -179,7 +179,7 @@
>  
>  unsigned short get_fpu_mxcsr( struct task_struct *tsk )
>  {
> -       if ( cpu_has_fxsr ) {
> +       if ( cpu_has_xmm ) {
>                 return tsk->thread.i387.fxsave.mxcsr;
>         } else {
>                 return 0x1f80;
> 

IMO, XMM is correct here; FXSR is incorrect.  Linus?

	-hpa
-- 
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
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