Message-ID: <4B7D9913.2090305@zytor.com>
Date: Thu, 18 Feb 2010 11:46:27 -0800
From: "H. Peter Anvin" <hpa@zytor.com>
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To: Avi Kivity <avi@redhat.com>
CC: Luca Barbieri <luca@luca-barbieri.com>, mingo@elte.hu,
       a.p.zijlstra@chello.nl, akpm@linux-foundation.org,
       linux-kernel@vger.kernel.org
Subject: Re: [PATCH 01/10] x86: add support for multiple choice alternatives
References: <1266406962-17463-1-git-send-email-luca@luca-barbieri.com> <1266406962-17463-2-git-send-email-luca@luca-barbieri.com> <4B7BE561.3070403@redhat.com>
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On 02/17/2010 04:47 AM, Avi Kivity wrote:
> On 02/17/2010 01:42 PM, Luca Barbieri wrote:
>> This patch modifies the x86 alternative macros to allow more than one
>> alternative code sequence.
>>
> Suggest documenting the precedence of alternatives: if both feature1 and 
> feature2 are present, which newinstr is patched in?
> 

Looks like the last one in the sequence takes effect, which is
consistent with the operation of the single ALTERNATIVE() macro ...
anything else would be quite lunacy.

	-hpa
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