From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758537AbYGRM2p (ORCPT ); Fri, 18 Jul 2008 08:28:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755840AbYGRM2i (ORCPT ); Fri, 18 Jul 2008 08:28:38 -0400 Received: from vpn.id2.novell.com ([195.33.99.129]:30156 "EHLO vpn.id2.novell.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755544AbYGRM2h convert rfc822-to-8bit (ORCPT ); Fri, 18 Jul 2008 08:28:37 -0400 Message-Id: <4880A8AC.76E4.0078.0@novell.com> X-Mailer: Novell GroupWise Internet Agent 7.0.3 Date: Fri, 18 Jul 2008 13:29:00 +0100 From: "Jan Beulich" To: , , Cc: Subject: [PATCH] i386: reduce boot fixmap space Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 8BIT Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org As 256 entries are needed, aligning to a 256-entry boundary is sufficient and still guarantees the single pte table requirement. Signed-off-by: Jan Beulich --- include/asm-x86/fixmap_32.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- linux-2.6.26/include/asm-x86/fixmap_32.h 2008-07-13 23:51:29.000000000 +0200 +++ 2.6.26-i386-btmap-fixmaps/include/asm-x86/fixmap_32.h 2008-07-18 13:51:16.000000000 +0200 @@ -94,13 +94,13 @@ enum fixed_addresses { * 256 temporary boot-time mappings, used by early_ioremap(), * before ioremap() is functional. * - * We round it up to the next 512 pages boundary so that we + * We round it up to the next 256 pages boundary so that we * can have a single pgd entry and a single pte table: */ #define NR_FIX_BTMAPS 64 #define FIX_BTMAPS_NESTING 4 - FIX_BTMAP_END = __end_of_permanent_fixed_addresses + 512 - - (__end_of_permanent_fixed_addresses & 511), + FIX_BTMAP_END = __end_of_permanent_fixed_addresses + 256 - + (__end_of_permanent_fixed_addresses & 255), FIX_BTMAP_BEGIN = FIX_BTMAP_END + NR_FIX_BTMAPS*FIX_BTMAPS_NESTING - 1, FIX_WP_TEST, #ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT