Date: Tue, 10 Nov 2009 17:24:54 +0000
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: Avi Kivity <avi@redhat.com>, Willy Tarreau <w@1wt.eu>,
       Pavel Machek <pavel@ucw.cz>, 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
Message-ID: <20091110172454.3c4481f2@lxorguk.ukuu.org.uk>
In-Reply-To: <4AF99E04.8080704@zytor.com>
References: <4AF4526B.4060101@zytor.com>
	<40101cc30911061418w357b74d8i3bf9a9537de052d4@mail.gmail.com>
	<20091108173708.GF1372@ucw.cz>
	<40101cc30911080940s18eb26bbg641beeaddbc25c3d@mail.gmail.com>
	<20091108181016.GB32364@elf.ucw.cz>
	<alpine.DEB.2.00.0911082026430.30789@aurora.sdinet.de>
	<20091108193618.GB4186@elf.ucw.cz>
	<40101cc30911081147j77f7b81o86f2cc5a869aca1f@mail.gmail.com>
	<20091108195158.GD4186@elf.ucw.cz>
	<20091108200852.7f2cf092@lxorguk.ukuu.org.uk>
	<20091110052711.GA15338@1wt.eu>
	<4AF9020C.90108@zytor.com>
	<4AF9435F.2070103@redhat.com>
	<20091110105642.215804e0@lxorguk.ukuu.org.uk>
	<4AF99E04.8080704@zytor.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 952
Lines: 22

On Tue, 10 Nov 2009 09:08:20 -0800
"H. Peter Anvin" <hpa@zytor.com> wrote:

> On 11/10/2009 02:56 AM, Alan Cox wrote:
> >> In theory yes.  There would need to be a bit of work to disassociate it 
> >> from kvm, but nothing too difficult.
> > 
> > For the tiny cases that actually matter using the KVM code appears a bit
> > over the top.
> 
> In the short term, yes, of course.  However, if we're going to do
> emulation, we might as well do it right.

Why is using KVM doing it right ? It sounds like its doing it slowly,
and hideously memory inefficiently. You are solving an uninteresting
general case problem when you just need two tiny fixups (or perhaps 3 if
you want to fix up early x86-64 prefetch)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/