linux-kernel - Re: [ANNOUNCE] kvm howto

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Message-ID: <454A0C7B.4080701@qumranet.com>
Date:	Thu, 02 Nov 2006 17:19:23 +0200
From:	Avi Kivity <avi@...ranet.com>
To:	Magnus Damm <magnus.damm@...il.com>
CC:	"Hesse, Christian" <mail@...thworm.de>,
	kvm-devel@...ts.sourceforge.net,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...l.org>
Subject: Re: [ANNOUNCE] kvm howto

Magnus Damm wrote:
>>
>> You need a newer binutils.  I'm using binutils-2.16.91.0.6 (gotta love
>> that version number), shipped with Fedora Core 5.
>
> The VT-extensions added by Intel and AMD only adds a limited number of
> instructions each. If you want to be user friendly it might be a good
> idea to implement these instructions as macros. I'm pretty sure
> VT-extension support in Xen works with my old binutils version.
>

Yes, Xen uses macros.

I figured a newish machine will have a newish binutils.  Looks like I 
was wrong.  I don't like uglifying the code, but if many users hit this, 
there won't be much of a choice.

[A minor problem with macros is that you can't let gcc choose the 
registers for you with instructions that have operands]

-- 
error compiling committee.c: too many arguments to function

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