Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 6 Jan 2003 11:14:18 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 6 Jan 2003 11:14:17 -0500 Received: from smtp.mailix.net ([216.148.213.132]:26795 "EHLO smtp.mailix.net") by vger.kernel.org with ESMTP id ; Mon, 6 Jan 2003 11:14:16 -0500 Date: Mon, 6 Jan 2003 17:22:51 +0100 From: Alex Riesen To: Dirk Bull Cc: linux-kernel Subject: Re: shmat problem Message-ID: <20030106162251.GA15900@steel> Reply-To: Alex Riesen Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1121 Lines: 36 > Doug, thanks for the reply. I've set SHM_RND in the call and used > "__attribute__ ((aligned(4096)))" during the the declaration of variable > global01_ > (as shown below) such that it is aligned on a page boundary. I'm porting > code that was > written for a Unix system to Linux and the example shown below is how the > code is implemented on Unix. on which exactly? > The example included executed correctly on: > mandrake - ? (Can't remember, but it was an old version) > > but fails to work on: > redhat - 2.2.14-5.0 > debian - 2.2.9 > mandrake - 2.4.19-16mdk > > We are currently working on mandrake - kernel 2.4.19-16mdk. You have to add SHM_REMAP to shmat flags (see definitions of SHM_ flags). > > if ( (shmptr = shmat(shmid, &global01_, SHM_RND)) == (void *) -1) > printf("shmat error: %d %s\n",errno, strerror(errno)); > else add SHM_REMAP. -alex - 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/