Message-ID: <4AF9EB4A.1050601@zytor.com>
Date: Tue, 10 Nov 2009 14:38:02 -0800
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
CC: Willy Tarreau <w@1wt.eu>, Pavel Machek <pavel@ucw.cz>,
       Avi Kivity <avi@redhat.com>, Alan Cox <alan@lxorguk.ukuu.org.uk>,
       Matteo Croce <technoboy85@gmail.com>,
       Sven-Haegar Koch <haegar@sdinet.de>, Ingo Molnar <mingo@elte.hu>,
       linux-kernel@vger.kernel.org
Subject: Re: i686 quirk for AMD Geode
References: <20091110172454.3c4481f2@lxorguk.ukuu.org.uk> <4AF9B5AB.5010800@zytor.com> <4AF9C3EF.6000705@redhat.com> <4AF9C6AB.8080006@zytor.com> <20091110201602.GA26633@1wt.eu> <20091110205445.GB1407@ucw.cz> <20091110211259.GD26633@1wt.eu> <4AF9D8E2.7050205@zytor.com> <20091110222756.GF15159@caffeine.csclub.uwaterloo.ca> <4AF9E94D.5040601@zytor.com> <20091110223407.GN15157@caffeine.csclub.uwaterloo.ca>
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On 11/10/2009 02:34 PM, Lennart Sorensen wrote:
> On Tue, Nov 10, 2009 at 02:29:33PM -0800, H. Peter Anvin wrote:
>> I don't believe we were talking about ARM.
> 
> True.  I do get the impression the ARM has higher trap overhead than x86.

Also, the x87 FPU is a very clunky beast that's slow to emulate (unlike
SSE).

	-hpa

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