From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=BAYES_00,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B8B59C433E0 for ; Wed, 24 Mar 2021 13:50:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7AFEF61A0A for ; Wed, 24 Mar 2021 13:50:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235667AbhCXNuH (ORCPT ); Wed, 24 Mar 2021 09:50:07 -0400 Received: from mail.kernel.org ([198.145.29.99]:50100 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235497AbhCXNte (ORCPT ); Wed, 24 Mar 2021 09:49:34 -0400 Received: from disco-boy.misterjones.org (disco-boy.misterjones.org [51.254.78.96]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 1F2A661A01; Wed, 24 Mar 2021 13:49:34 +0000 (UTC) Received: from 78.163-31-62.static.virginmediabusiness.co.uk ([62.31.163.78] helo=why.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94) (envelope-from ) id 1lP3t6-003WyQ-19; Wed, 24 Mar 2021 13:49:32 +0000 Date: Wed, 24 Mar 2021 13:49:31 +0000 Message-ID: <875z1gk6fo.wl-maz@kernel.org> From: Marc Zyngier To: Suzuki K Poulose Cc: Catalin Marinas , Mathieu Poirier , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, coresight@lists.linaro.org, mike.leach@linaro.org, leo.yan@linaro.org, anshuman.khandual@arm.com, Will Deacon Subject: Re: [PATCH v5 05/19] arm64: Add support for trace synchronization barrier In-Reply-To: <7675ab71-c2ff-91e0-5728-fcb216ac1e0d@arm.com> References: <20210323120647.454211-1-suzuki.poulose@arm.com> <20210323120647.454211-6-suzuki.poulose@arm.com> <20210323182142.GA16080@arm.com> <7675ab71-c2ff-91e0-5728-fcb216ac1e0d@arm.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1 (x86_64-pc-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: suzuki.poulose@arm.com, catalin.marinas@arm.com, mathieu.poirier@linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, coresight@lists.linaro.org, mike.leach@linaro.org, leo.yan@linaro.org, anshuman.khandual@arm.com, will.deacon@arm.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 24 Mar 2021 09:39:13 +0000, Suzuki K Poulose wrote: > > On 23/03/2021 18:21, Catalin Marinas wrote: > > Hi Suzuki? > > > > On Tue, Mar 23, 2021 at 12:06:33PM +0000, Suzuki K Poulose wrote: > >> tsb csync synchronizes the trace operation of instructions. > >> The instruction is a nop when FEAT_TRF is not implemented. > >> > >> Cc: Mathieu Poirier > >> Cc: Mike Leach > >> Cc: Catalin Marinas > >> Cc: Will Deacon > >> Signed-off-by: Suzuki K Poulose > > > > How do you plan to merge these patches? If they go via the coresight > > tree: > > > > Ideally all of this should go via the CoreSight tree to have the > dependencies solved at one place. But there are some issues : > > If this makes to 5.13 queue for CoreSight, > > 1) CoreSight next is based on rc2 at the moment and we have fixes gone > into rc3 and later, which this series will depend on. (We could move > the next tree forward to a later rc to solve this). > > 2) There could be conflicts with the kvmarm tree for the KVM host > changes (That has dependency on the TRBE definitions patch). > > If it doesn't make to 5.13 queue, it would be good to have this patch, > the TRBE defintions and the KVM host patches queued for 5.13 (not sure > if this is acceptable) and we could rebase the CoreSight changes on 5.13 > and push it to next release. > > I am open for other suggestions. > > Marc, Mathieu, > > Thoughts ? I was planning to take the first two patches in 5.12 as fixes (they are queued already, and would hopefully land in -rc5). If that doesn't fit with the plan, please let me know ASAP. Thanks, M. -- Without deviation from the norm, progress is not possible.