From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754618AbYAPWQF (ORCPT ); Wed, 16 Jan 2008 17:16:05 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752077AbYAPWPE (ORCPT ); Wed, 16 Jan 2008 17:15:04 -0500 Received: from mx2.suse.de ([195.135.220.15]:38203 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751523AbYAPWPB (ORCPT ); Wed, 16 Jan 2008 17:15:01 -0500 From: Andi Kleen References: <200801161114.239449000@suse.de> In-Reply-To: <200801161114.239449000@suse.de> To: linux-kernel@vger.kernel.org, mingo@elte.hu, tglx@linutronix.de, jbeulich@novell.com, venkatesh.pallipadi@intel.com Subject: [PATCH] [2/36] Undo pageattr_32 portions of 11c9734cbcf4c5862260442a5d56dd4779799fcc Message-Id: <20080116221500.72865150C8@wotan.suse.de> Date: Wed, 16 Jan 2008 23:15:00 +0100 (CET) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Undoes pageattr_32.c parts of Not sure what the point of that change was anyways. commit 11c9734cbcf4c5862260442a5d56dd4779799fcc Author: Venkatesh Pallipadi Date: Tue Jan 15 09:36:03 2008 +0100 patches/x86-pat-usable_only_map_i386.patch i386: Map only usable memory in identity map. Reserved memory maps to a zero page. Signed-off-by: Andi Kleen --- arch/x86/mm/pageattr_32.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) Index: linux/arch/x86/mm/pageattr_32.c =================================================================== --- linux.orig/arch/x86/mm/pageattr_32.c +++ linux/arch/x86/mm/pageattr_32.c @@ -55,11 +55,9 @@ split_large_page(unsigned long address, /* * page_private is used to track the number of entries in * the page table page that have non standard attributes. - * Count of 1 indicates page split by split_large_page(), - * additional count indicates the number of pages with non-std attr. */ SetPagePrivate(base); - page_private(base) = 1; + page_private(base) = 0; address = __pa(address); addr = address & LARGE_PAGE_MASK; @@ -205,7 +203,7 @@ static int __change_page_attr(struct pag save_page(kpte_page); if (!PageReserved(kpte_page)) { - if (cpu_has_pse && (page_private(kpte_page) == 1)) { + if (cpu_has_pse && (page_private(kpte_page) == 0)) { paravirt_release_pt(page_to_pfn(kpte_page)); revert_page(kpte_page, address); }