From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Tue, 13 May 2003 10:51:48 +0100 (BST) Received: (from localhost user: 'ladis' uid#10009 fake: STDIN (ladis@3ffe:8260:2028:fffe::1)) by linux-mips.org id ; Tue, 13 May 2003 10:51:45 +0100 Date: Tue, 13 May 2003 10:51:45 +0100 From: Ladislav Michl To: Jun Sun Cc: linux-mips@linux-mips.org Subject: Re: memory for exception vectors Message-ID: <20030513105145.D22288@ftp.linux-mips.org> References: <20030512115641.F17151@ftp.linux-mips.org> <20030512104408.C24045@mvista.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <20030512104408.C24045@mvista.com>; from jsun@mvista.com on Mon, May 12, 2003 at 10:44:08AM -0700 Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 2356 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: ladis@linux-mips.org Precedence: bulk X-list: linux-mips On Mon, May 12, 2003 at 10:44:08AM -0700, Jun Sun wrote: > On Mon, May 12, 2003 at 11:56:41AM +0100, Ladislav Michl wrote: > > Could anyone tell me where is space for exception vectors reserved? Many boards > > (for example Alchemy Pb1000, Galileo EV96100 or Galileo EV64120A) simply > > registers all available RAM with add_memory_region call, but I didn't find code > > which reserves first 0x200 (on most CPUs) for exceptions vectors anywhere. I'd > > guess there is something obvious what I'm missing. Can you help me to see it? > > Kernel only uses memory after the end of kernel image. In that sense, all > memory before LOADADDR (see arch/mips/Makefile) is reserved. I'm afraid, I didn't find any code which does what you're describing here. But in arch/mips/mm/init.c is function setup_zero_pages which allocates first (or first eight if CPU has VCE) page(s). Does it do the trick? ladis