linux-kernel - Re: i686 quirk for AMD Geode

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Message-ID: <4AF994FA.8010702@zytor.com>
Date:	Tue, 10 Nov 2009 08:29:46 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Avi Kivity <avi@...hat.com>
CC:	Willy Tarreau <w@....eu>, Alan Cox <alan@...rguk.ukuu.org.uk>,
	Pavel Machek <pavel@....cz>,
	Matteo Croce <technoboy85@...il.com>,
	Sven-Haegar Koch <haegar@...net.de>,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org
Subject: Re: i686 quirk for AMD Geode

On 11/10/2009 02:41 AM, Avi Kivity wrote:
> 
> In theory yes.  There would need to be a bit of work to disassociate it
> from kvm, but nothing too difficult.
> 
> Note that the kvm x86 emulator is more general than need be (emulates
> real mode code and cpl 0 instructions) and less general than needed
> (many instructions are not emulated, for example nopl).
> 

Yes, but I suspect that adding new instructions probably is
straightforward.  I would still prefer to have a single interpreter in
the kernel as opposed to two different ones which are going to have
different bugs.

	-hpa

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

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