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

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Message-ID: <20080109002803.GA3732@elte.hu>
Date:	Wed, 9 Jan 2008 01:28:03 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	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


> >>>  #define __PAGE_KERNEL_EXEC						\
> >>> -	(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_GLOBAL)
> >>> +	(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED)
> >>>     
> >
> > This shouldn't be necessary.  The old 64-bit code defined everything 
> > without _PAGE_GLOBAL, but then used a MAKE_GLOBAL() macro to OR it 
> > in later.  This seemed a bit roundabout to me, so I just put it in 
> > from the outset.

actually, this is wrong.

a couple of places use __PAGE_* values, which you've now changed to 
include the _PAGE_GLOBAL flag.

	Ingo
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