From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Thu, 13 May 2010 18:14:06 +0200 (CEST) Received: from h5.dl5rb.org.uk ([81.2.74.5]:47986 "EHLO h5.dl5rb.org.uk" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S1491947Ab0EMQOD (ORCPT ); Thu, 13 May 2010 18:14:03 +0200 Received: from h5.dl5rb.org.uk (localhost.localdomain [127.0.0.1]) by h5.dl5rb.org.uk (8.14.3/8.14.3) with ESMTP id o4DGDwlM010491; Thu, 13 May 2010 17:14:00 +0100 Received: (from ralf@localhost) by h5.dl5rb.org.uk (8.14.3/8.14.3/Submit) id o4DGDv9a010488; Thu, 13 May 2010 17:13:57 +0100 Date: Thu, 13 May 2010 17:13:57 +0100 From: Ralf Baechle To: David Daney Cc: Wu Zhangjin , linux-mips Subject: Re: [PATCH 9/9] tracing: MIPS: cleanup of the address space checking Message-ID: <20100513161357.GA5810@linux-mips.org> References: <86404e31ca5c4c33b785bad7f6223ac775f4f879.1273669419.git.wuzhangjin@gmail.com> <4BEAE19D.40502@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4BEAE19D.40502@gmail.com> User-Agent: Mutt/1.5.20 (2009-08-17) 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: 26703 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: ralf@linux-mips.org Precedence: bulk X-list: linux-mips On Wed, May 12, 2010 at 10:13:01AM -0700, David Daney wrote: > The kernel is always compiled with -msym32, so the patch is a bit pointless. Not quite true. Some systems only have enough memory for the exception vectors in the low 512MB of physical address space, so these can't use an -msym32 kernel. My general impression is that hardware designers "design" address maps by throwing darts over their shoulder after a few pints ;-) Ralf