From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161495AbXDLCXC (ORCPT ); Wed, 11 Apr 2007 22:23:02 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161485AbXDLCVH (ORCPT ); Wed, 11 Apr 2007 22:21:07 -0400 Received: from ozlabs.org ([203.10.76.45]:55493 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161484AbXDLCUd (ORCPT ); Wed, 11 Apr 2007 22:20:33 -0400 To: Andrew Morton CC: Linux Memory Management , From: Benjamin Herrenschmidt Date: Thu, 12 Apr 2007 12:20:30 +1000 Subject: [PATCH 7/12] get_unmapped_area handles MAP_FIXED on parisc In-Reply-To: <1176344427.242579.337989891532.qpush@grosgo> Message-Id: <20070412022032.A3F3BDDF2E@ozlabs.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Handle MAP_FIXED in parisc arch_get_unmapped_area(), just return the address. We might want to also check for possible cache aliasing issues now that we get called in that case (like ARM or MIPS), leave a comment for the maintainers to pick up. Signed-off-by: Benjamin Herrenschmidt arch/parisc/kernel/sys_parisc.c | 5 +++++ 1 file changed, 5 insertions(+) Index: linux-cell/arch/parisc/kernel/sys_parisc.c =================================================================== --- linux-cell.orig/arch/parisc/kernel/sys_parisc.c 2007-03-22 15:28:05.000000000 +1100 +++ linux-cell/arch/parisc/kernel/sys_parisc.c 2007-03-22 15:29:08.000000000 +1100 @@ -106,6 +106,11 @@ unsigned long arch_get_unmapped_area(str { if (len > TASK_SIZE) return -ENOMEM; + /* Might want to check for cache aliasing issues for MAP_FIXED case + * like ARM or MIPS ??? --BenH. + */ + if (flags & MAP_FIXED) + return addr; if (!addr) addr = TASK_UNMAPPED_BASE;