From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933048AbdABPAs (ORCPT ); Mon, 2 Jan 2017 10:00:48 -0500 Received: from pandora.armlinux.org.uk ([78.32.30.218]:37380 "EHLO pandora.armlinux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932959AbdABPAq (ORCPT ); Mon, 2 Jan 2017 10:00:46 -0500 Date: Mon, 2 Jan 2017 15:00:16 +0000 From: Russell King - ARM Linux To: Linus Walleij Cc: Sebastian Andrzej Siewior , "linux-arm-kernel@lists.infradead.org" , Will Deacon , "linux-kernel@vger.kernel.org" , Mark Rutland , rt@linuxtronix.de, Thomas Gleixner Subject: Re: [PATCH 15/20] ARM/hw_breakpoint: Convert to hotplug state machine Message-ID: <20170102150015.GJ14217@n2100.armlinux.org.uk> References: <20161117183541.8588-1-bigeasy@linutronix.de> <20161117183541.8588-16-bigeasy@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jan 02, 2017 at 03:34:32PM +0100, Linus Walleij wrote: > in the first line of arch_hw_breakpoint_init() in > arch/arm/kernel/hw_breakpoint.c > > I suspect that is not an accepable solution ... > > It hangs at PC is at write_wb_reg+0x20c/0x330 > Which is c03101dc, and looks like this in objdump -d: > > c031020c: ee001eba mcr 14, 0, r1, cr0, cr10, {5} > c0310210: eaffffb3 b c03100e4 ... and this is several instructions after the address you mention above. Presumably c03101dc is accessing a higher numbered register? -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.