From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752852Ab2JBJOO (ORCPT ); Tue, 2 Oct 2012 05:14:14 -0400 Received: from cam-admin0.cambridge.arm.com ([217.140.96.50]:53181 "EHLO cam-admin0.cambridge.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752041Ab2JBJN6 (ORCPT ); Tue, 2 Oct 2012 05:13:58 -0400 Date: Tue, 2 Oct 2012 10:13:01 +0100 From: Will Deacon To: Stephen Boyd Cc: "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" Subject: Re: [PATCH] ARM: hw_breakpoint: Clear breakpoints before enabling monitor mode Message-ID: <20121002091301.GA8847@mudshark.cambridge.arm.com> References: <1348160260-19486-1-git-send-email-sboyd@codeaurora.org> <20120920173556.GQ4654@mudshark.cambridge.arm.com> <20120924171934.GE5522@mudshark.cambridge.arm.com> <506A3694.4070004@codeaurora.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <506A3694.4070004@codeaurora.org> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Oct 02, 2012 at 01:34:28AM +0100, Stephen Boyd wrote: > On 09/24/12 10:19, Will Deacon wrote: > > Ok, I've pushed a bunch of patches to my hw-breakpoint branch (head commit > > 55cb726797c7). I'll post them to the list after the merge window, but please > > do take them for a spin if you get a chance. > > > > Forgot to reply here. Took them for a spin last week with that commit. > No more boot hangs but I can't say much else beyond that. When you post > to the list I'll add my tested-by. Thanks Stephen. I've also got some patches for OS save/restore of the debug registers using the various hardware locking and readout mechanisms, so that debug state can be persisted across low-power states. Do any of the Qualcomm chips (v7 as opposed to v7.1) implement the save/restore registers? Will