Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753702AbYACPYZ (ORCPT ); Thu, 3 Jan 2008 10:24:25 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751580AbYACPYQ (ORCPT ); Thu, 3 Jan 2008 10:24:16 -0500 Received: from ns2.suse.de ([195.135.220.15]:43006 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751501AbYACPYQ (ORCPT ); Thu, 3 Jan 2008 10:24:16 -0500 From: Andi Kleen Message-Id: <20080103424.989432000@suse.de> To: linux-kernel@vger.kernel.org Subject: [PATCH CPA] [1/28] Shrink __PAGE_KERNEL/__PAGE_KERNEL_EXEC on non PAE kernels Date: Thu, 3 Jan 2008 16:24:15 +0100 (CET) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1818 Lines: 45 No need to make it 64bit there. Signed-off-by: Andi Kleen --- arch/x86/mm/init_32.c | 4 ++-- include/asm-x86/pgtable_32.h | 3 ++- 2 files changed, 4 insertions(+), 3 deletions(-) Index: linux/arch/x86/mm/init_32.c =================================================================== --- linux.orig/arch/x86/mm/init_32.c +++ linux/arch/x86/mm/init_32.c @@ -326,9 +326,9 @@ static void __init set_highmem_pages_ini #define set_highmem_pages_init(bad_ppro) do { } while (0) #endif /* CONFIG_HIGHMEM */ -unsigned long long __PAGE_KERNEL = _PAGE_KERNEL; +typeof_field(pgprot_t, pgprot) __PAGE_KERNEL = _PAGE_KERNEL; EXPORT_SYMBOL(__PAGE_KERNEL); -unsigned long long __PAGE_KERNEL_EXEC = _PAGE_KERNEL_EXEC; +typeof_field(pgprot_t, pgprot) __PAGE_KERNEL_EXEC = _PAGE_KERNEL_EXEC; #ifdef CONFIG_NUMA extern void __init remap_numa_kva(void); Index: linux/include/asm-x86/pgtable_32.h =================================================================== --- linux.orig/include/asm-x86/pgtable_32.h +++ linux/include/asm-x86/pgtable_32.h @@ -153,7 +153,8 @@ void paging_init(void); #define _PAGE_KERNEL_EXEC \ (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED) -extern unsigned long long __PAGE_KERNEL, __PAGE_KERNEL_EXEC; +#define typeof_field(t, m) typeof(((t *)0)->m) +extern typeof_field(pgprot_t, pgprot) __PAGE_KERNEL, __PAGE_KERNEL_EXEC; #define __PAGE_KERNEL_RO (__PAGE_KERNEL & ~_PAGE_RW) #define __PAGE_KERNEL_RX (__PAGE_KERNEL_EXEC & ~_PAGE_RW) #define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/