linux-kernel - Re: [PATCH 18/25] [PATCH] turn priviled operations into macros in entry.S

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Date:	Wed, 08 Aug 2007 22:21:11 -0700
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Steven Rostedt <rostedt@...dmis.org>
CC:	Andi Kleen <andi@...stfloor.org>,
	Glauber de Oliveira Costa <gcosta@...hat.com>,
	LKML <linux-kernel@...r.kernel.org>, akpm@...ux-foundation.org,
	rusty@...tcorp.com.au, Ingo Molnar <mingo@...e.hu>,
	chrisw@...s-sol.org, avi@...ranet.com, anthony@...emonkey.ws,
	virtualization@...ts.linux-foundation.org, lguest@...abs.org
Subject: Re: [PATCH 18/25] [PATCH] turn priviled operations into macros in
 entry.S

Steven Rostedt wrote:
> 	/*
> 	 * x86 arch doesn't have an easy way to find out where
> 	 * gs is located. So we need to read the MSR. But first
> 	 * we need to save off the rcx, rax and rdx.
>   
Why don't you store it in gs?  movq %gs:my_gs_base, %rax?

    J
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