From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1161649AbXDXFhA (ORCPT ); Tue, 24 Apr 2007 01:37:00 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1161629AbXDXFed (ORCPT ); Tue, 24 Apr 2007 01:34:33 -0400 Received: from ozlabs.org ([203.10.76.45]:35021 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1161632AbXDXFdk (ORCPT ); Tue, 24 Apr 2007 01:33:40 -0400 To: Andrew Morton CC: , Linux Memory Management From: Benjamin Herrenschmidt Date: Tue, 24 Apr 2007 15:33:37 +1000 Subject: [PATCH 7/12] get_unmapped_area handles MAP_FIXED on parisc In-Reply-To: <1177392813.924664.32930750763.qpush@grosgo> Message-Id: <20070424053339.D189DDDF0D@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;