From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2993096AbcBSOan (ORCPT ); Fri, 19 Feb 2016 09:30:43 -0500 Received: from foss.arm.com ([217.140.101.70]:46379 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1423759AbcBSOaj (ORCPT ); Fri, 19 Feb 2016 09:30:39 -0500 Date: Fri, 19 Feb 2016 14:30:45 +0000 From: Will Deacon To: Marc Zyngier Cc: Catalin Marinas , Mark Rutland , Christoffer Dall , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu Subject: Re: [PATCH v4.1] arm64: hw_breakpoint: Allow EL2 breakpoints if running in HYP Message-ID: <20160219143045.GJ27062@arm.com> References: <1455216004-19499-23-git-send-email-marc.zyngier@arm.com> <1455731923-26768-1-git-send-email-marc.zyngier@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1455731923-26768-1-git-send-email-marc.zyngier@arm.com> 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 Wed, Feb 17, 2016 at 05:58:43PM +0000, Marc Zyngier wrote: > With VHE, we place kernel {watch,break}-points at EL2 to get things > like kgdb and "perf -e mem:..." working. > > This requires a bit of repainting in the low-level encore/decode, > but is otherwise pretty simple. > > Signed-off-by: Marc Zyngier > --- > arch/arm64/include/asm/hw_breakpoint.h | 18 +++++++++++++----- > 1 file changed, 13 insertions(+), 5 deletions(-) Acked-by: Will Deacon Will