Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262105AbVAZXxQ (ORCPT ); Wed, 26 Jan 2005 18:53:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262505AbVAZXuv (ORCPT ); Wed, 26 Jan 2005 18:50:51 -0500 Received: from canuck.infradead.org ([205.233.218.70]:5646 "EHLO canuck.infradead.org") by vger.kernel.org with ESMTP id S261958AbVAZTln (ORCPT ); Wed, 26 Jan 2005 14:41:43 -0500 Subject: Re: don't let mmap allocate down to zero From: Arjan van de Ven To: linux-os@analogic.com Cc: Rik van Riel , Andrew Morton , linux-kernel@vger.kernel.org, James Antill , Bryn Reeves In-Reply-To: References: Content-Type: text/plain Date: Wed, 26 Jan 2005 20:41:06 +0100 Message-Id: <1106768466.6307.157.camel@laptopd505.fenrus.org> Mime-Version: 1.0 X-Mailer: Evolution 2.0.2 (2.0.2-3) Content-Transfer-Encoding: 7bit X-Spam-Score: 4.1 (++++) X-Spam-Report: SpamAssassin version 2.63 on canuck.infradead.org summary: Content analysis details: (4.1 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.3 RCVD_NUMERIC_HELO Received: contains a numeric HELO 1.1 RCVD_IN_DSBL RBL: Received via a relay in list.dsbl.org [] 2.5 RCVD_IN_DYNABLOCK RBL: Sent directly from dynamic IP address [80.57.133.107 listed in dnsbl.sorbs.net] 0.1 RCVD_IN_SORBS RBL: SORBS: sender is listed in SORBS [80.57.133.107 listed in dnsbl.sorbs.net] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 727 Lines: 20 On Wed, 2005-01-26 at 11:38 -0500, linux-os wrote: > On Wed, 26 Jan 2005, Rik van Riel wrote: > > > With some programs the 2.6 kernel can end up allocating memory > > at address zero, for a non-MAP_FIXED mmap call! This causes > > problems with some programs and is generally rude to do. This > > simple patch fixes the problem in my tests. > > Does this mean that we can't mmap the screen regen buffer at > 0x000b8000 anymore? you're confusing virtual and physical addresses - 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/