linux-kernel - Re: [discuss] [PATCH 1/3] x86_64: additions to the i386 alternative extensions to support x86

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Message-Id: <200702192229.22217.ak@suse.de>
Date:	Mon, 19 Feb 2007 22:29:22 +0100
From:	Andi Kleen <ak@...e.de>
To:	discuss@...-64.org
Cc:	"Joerg Roedel" <joerg.roedel@....com>, linux-kernel@...r.kernel.org
Subject: Re: [discuss] [PATCH 1/3] x86_64: additions to the i386 alternative extensions to support x86_64 architecture

On Monday 19 February 2007 20:07, Joerg Roedel wrote:
> From: Joerg Roedel <joerg.roedel@....com>
> 
> This patch adds the necessary changes to extend the i386 alternative
> instruction framework extension on the x86_64 architecture.

Looks complicated and somewhat fragile.

I think I would prefer it if you changed the pad field to a "bit not set"
cpuid field. Then at least 2 alternatives + a nothing alternative could
be described too.

-Andi
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