From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from metis.ext.pengutronix.de ([2001:6f8:1178:4:290:27ff:fe1d:cc33]) by canuck.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1QqKKP-0001Tz-6R for barebox@lists.infradead.org; Mon, 08 Aug 2011 07:32:50 +0000 Date: Mon, 8 Aug 2011 09:32:47 +0200 From: Sascha Hauer Message-ID: <20110808073247.GO31404@pengutronix.de> References: <1312786003-14734-1-git-send-email-s.hauer@pengutronix.de> <20110808070650.GA22017@game.jcrosoft.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20110808070650.GA22017@game.jcrosoft.org> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: barebox-bounces@lists.infradead.org Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: Re: ARM: use high vectors if possible To: Jean-Christophe PLAGNIOL-VILLARD Cc: barebox@lists.infradead.org Hi J, On Mon, Aug 08, 2011 at 09:06:50AM +0200, Jean-Christophe PLAGNIOL-VILLARD wrote: > On 08:46 Mon 08 Aug , Sascha Hauer wrote: > > Created this series to get high vector support. Using high vectors > > at 0xffff0000 allow us to map in a faulting page at 0x0 with which > > we can catch NULL pointer dereferences. The other patches are only > > some cleanups around exceptions which I came along the way. > be careful on ixp4xx (which I work on 0x0 is the nor flash address) Well, we already map the vectors to 0x0 without this series, so ixp4xx is broken anyway. So we either have to add a flag somewhere to disable mapping anything to 0x0 or we have to use the mmu to map the nor flash somewhere else. I see this is a problem which must be solved, but this series does not change the current situation in this regard. Sascha -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 | _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox