linux-kernel - Re: [PATCH 00 of 10] x86: unify asm/pgtable.h

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Message-ID: <20080109011846.GE25945@bingen.suse.de>
Date:	Wed, 9 Jan 2008 02:18:46 +0100
From:	Andi Kleen <ak@...e.de>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Jeremy Fitzhardinge <jeremy@...p.org>,
	LKML <linux-kernel@...r.kernel.org>, Andi Kleen <ak@...e.de>,
	Glauber de Oliveira Costa <glommer@...il.com>,
	Jan Beulich <jbeulich@...ell.com>
Subject: Re: [PATCH 00 of 10] x86: unify asm/pgtable.h

On Wed, Jan 09, 2008 at 02:16:09AM +0100, Ingo Molnar wrote:
> 
> * Jeremy Fitzhardinge <jeremy@...p.org> wrote:
> 
> > This isn't correct, because it will set _PAGE_GLOBAL on 32-bit 
> > unconditionally.  It needs to be something like:
> 
> hm, why is that a problem? 

Not so ancient 32bit CPUs didn't support global. 

> Ah, the VDSO page must not be global-mapped, 

That too.

-Andi
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