From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934061Ab0KPJOz (ORCPT ); Tue, 16 Nov 2010 04:14:55 -0500 Received: from mail-iw0-f174.google.com ([209.85.214.174]:33707 "EHLO mail-iw0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757270Ab0KPJOx convert rfc822-to-8bit (ORCPT ); Tue, 16 Nov 2010 04:14:53 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type :content-transfer-encoding; b=cbzJjpMukUw968HaxT2ZLmQkO8nLvLTIU+l94H6vLrUs8o6Nihn0GVseR9fkOfgnkK SfK3FQXohYsLa4W2vSy1HeYi0R/cbO0Ju+g6y60FutriYYngls0f/Mh8nPRZBAGzG5JA 19bfxkelVALs1oKQ5is83F0dkHD5pcUfkoiDE= MIME-Version: 1.0 In-Reply-To: <20101115233129.GG31421@n2100.arm.linux.org.uk> References: <1289584840-18097-1-git-send-email-catalin.marinas@arm.com> <1289584840-18097-3-git-send-email-catalin.marinas@arm.com> <20101115233129.GG31421@n2100.arm.linux.org.uk> Date: Tue, 16 Nov 2010 09:14:52 +0000 X-Google-Sender-Auth: sAzOsx_RcinH3VfWX5CEMwY1VC4 Message-ID: Subject: Re: [PATCH v2 02/20] ARM: LPAE: Factor out 2-level page table definitions into separate files From: Catalin Marinas To: Russell King - ARM Linux Cc: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 15 November 2010 23:31, Russell King - ARM Linux wrote: > On Fri, Nov 12, 2010 at 06:00:22PM +0000, Catalin Marinas wrote: >> This patch moves page table definitions from asm/page.h, asm/pgtable.h >> and asm/ptgable-hwdef.h into corresponding *-2level* files. > > This also introduces pteval_t.  It would be useful to have the > introduction of pteval_t as a separate patch, which not only > introduces the typedef, but also makes use of it. I can do this. I missed this while splitting my initial big diff. >> +#ifndef _ASM_PGTABLE_2LEVEL_TYPES_H >> +#define _ASM_PGTABLE_2LEVEL_TYPES_H >> + >> +#undef STRICT_MM_TYPECHECKS >> + >> +typedef unsigned long pteval_t; >> + >> +#ifdef STRICT_MM_TYPECHECKS >> +/* >> + * These are used to make use of C type-checking.. >> + */ >> +typedef struct { unsigned long pte; } pte_t; > > This should become: > > typedef struct { pteval_t pte; } pte_t; > > L_PTE_* can then be declared using linux/const.h stuff to typedef them > to pteval_t. I already do this for LPAE but can be done for the 2-level definitions for consistency. BTW, do you think it's worth adding STRICT_MM_TYPECHECKS for LPAE as well? It would probably spot some issues. > shared_pte_mask also needs to be pteval_t. That's done in the 3rd version of the series. > As far as the __p*_error() functions, these should probably be passed > the pte/pmd/pgd value itself, rather than first passing them through > __pte_val() et.al. > > Of couse, I now have patches for this and my other points... will sort > them out into a series in the next few days. Thanks. -- Catalin From mboxrd@z Thu Jan 1 00:00:00 1970 From: catalin.marinas@arm.com (Catalin Marinas) Date: Tue, 16 Nov 2010 09:14:52 +0000 Subject: [PATCH v2 02/20] ARM: LPAE: Factor out 2-level page table definitions into separate files In-Reply-To: <20101115233129.GG31421@n2100.arm.linux.org.uk> References: <1289584840-18097-1-git-send-email-catalin.marinas@arm.com> <1289584840-18097-3-git-send-email-catalin.marinas@arm.com> <20101115233129.GG31421@n2100.arm.linux.org.uk> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 15 November 2010 23:31, Russell King - ARM Linux wrote: > On Fri, Nov 12, 2010 at 06:00:22PM +0000, Catalin Marinas wrote: >> This patch moves page table definitions from asm/page.h, asm/pgtable.h >> and asm/ptgable-hwdef.h into corresponding *-2level* files. > > This also introduces pteval_t. ?It would be useful to have the > introduction of pteval_t as a separate patch, which not only > introduces the typedef, but also makes use of it. I can do this. I missed this while splitting my initial big diff. >> +#ifndef _ASM_PGTABLE_2LEVEL_TYPES_H >> +#define _ASM_PGTABLE_2LEVEL_TYPES_H >> + >> +#undef STRICT_MM_TYPECHECKS >> + >> +typedef unsigned long pteval_t; >> + >> +#ifdef STRICT_MM_TYPECHECKS >> +/* >> + * These are used to make use of C type-checking.. >> + */ >> +typedef struct { unsigned long pte; } pte_t; > > This should become: > > typedef struct { pteval_t pte; } pte_t; > > L_PTE_* can then be declared using linux/const.h stuff to typedef them > to pteval_t. I already do this for LPAE but can be done for the 2-level definitions for consistency. BTW, do you think it's worth adding STRICT_MM_TYPECHECKS for LPAE as well? It would probably spot some issues. > shared_pte_mask also needs to be pteval_t. That's done in the 3rd version of the series. > As far as the __p*_error() functions, these should probably be passed > the pte/pmd/pgd value itself, rather than first passing them through > __pte_val() et.al. > > Of couse, I now have patches for this and my other points... will sort > them out into a series in the next few days. Thanks. -- Catalin