linux-kernel - Re: [patch 5/8] Immediate Values

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Message-ID: <4739F609.50501@zytor.com>
Date:	Tue, 13 Nov 2007 11:07:53 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
CC:	akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
	Andi Kleen <ak@....de>, Chuck Ebbert <cebbert@...hat.com>,
	Christoph Hellwig <hch@...radead.org>,
	Jeremy Fitzhardinge <jeremy@...p.org>
Subject: Re: [patch 5/8] Immediate Values - x86 Optimization

Mathieu Desnoyers wrote:
- Use "=g" constraint for char immediate value inline assembly.

"=g" is the same as "=rmi" which is inherently bogus.  In your actual 
code you use "=r", the correct constraint is "=q".

	-hpa
-
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