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

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Message-ID: <20080109013725.GC1133@elte.hu>
Date:	Wed, 9 Jan 2008 02:37:25 +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>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH 00 of 10] x86: unify asm/pgtable.h


* Jeremy Fitzhardinge <jeremy@...p.org> wrote:

>>> +#define GLOBAL_PGPROT(prot)	__pgprot(prot | _PAGE_GLOBAL)
>>> +
>>> +#define PAGE_KERNEL			GLOBAL_PGPROT(__PAGE_KERNEL)
>>> +#define PAGE_KERNEL_RO			GLOBAL_PGPROT(__PAGE_KERNEL_RO)
>>> +#define PAGE_KERNEL_EXEC		GLOBAL_PGPROT(__PAGE_KERNEL_EXEC)
>>> +#define PAGE_KERNEL_RX			GLOBAL_PGPROT(__PAGE_KERNEL_RX)
>>> +#define PAGE_KERNEL_NOCACHE		GLOBAL_PGPROT(__PAGE_KERNEL_NOCACHE)
>>> +#define PAGE_KERNEL_LARGE		GLOBAL_PGPROT(__PAGE_KERNEL_LARGE)
>>> +#define PAGE_KERNEL_LARGE_EXEC		GLOBAL_PGPROT(__PAGE_KERNEL_LARGE_EXEC)
>>> +#define PAGE_KERNEL_VSYSCALL		GLOBAL_PGPROT(__PAGE_KERNEL_VSYSCALL)
>>> +#define PAGE_KERNEL_VSYSCALL_NOCACHE	GLOBAL_PGPROT(__PAGE_KERNEL_VSYSCALL_NOCACHE)
>>>     
>>
>> i suspect you wanted to make GLOBAL_PGPROT a NOP on 32-bit?
>>   
>
> Yeah, cut'n'paste from a stale buffer.

ok.

i've updated x86.git with the latest bits, could you double-check it? 
Havent applied any pgattr*.c changes yet. Note, it's not fully tested 
through yet, so it might have a few rough edges, but wanted to get the 
current stuff out.

	Ingo
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