linux-kernel - Re: [PATCH] x86: Create clflush() inline, remove hardcoded wbinvd

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Message-ID: <20070720212741.GB565@one.firstfloor.org>
Date:	Fri, 20 Jul 2007 23:27:41 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Glauber de Oliveira Costa <gcosta@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86: Create clflush() inline, remove hardcoded wbinvd

On Fri, Jul 20, 2007 at 02:19:58PM -0700, H. Peter Anvin wrote:
> Create an inline function for clflush(), with the proper arguments,
> and use it instead of hard-coding the instruction.
> 
> This also removes one instance of hard-coded wbinvd, based on a patch
> by Bauder de Oliveira Costa.

I don't see much sense in it. CLFLUSH is not priviledged, paravirt
doesn't need to change and this adds just an unnecessary layer of abstraction.

-Andi
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