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=-10.3 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 EFEE3C433E3 for ; Wed, 24 Mar 2021 15:51:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BFE3661A0F for ; Wed, 24 Mar 2021 15:51:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236839AbhCXPvc (ORCPT ); Wed, 24 Mar 2021 11:51:32 -0400 Received: from foss.arm.com ([217.140.110.172]:35446 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236815AbhCXPvS (ORCPT ); Wed, 24 Mar 2021 11:51:18 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 8EE37D6E; Wed, 24 Mar 2021 08:51:17 -0700 (PDT) Received: from [10.57.51.32] (unknown [10.57.51.32]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 0A6543F7D7; Wed, 24 Mar 2021 08:51:15 -0700 (PDT) Subject: Re: [PATCH v5 05/19] arm64: Add support for trace synchronization barrier To: Marc Zyngier 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 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> <875z1gk6fo.wl-maz@kernel.org> From: Suzuki K Poulose Message-ID: <1b5e5bb2-b89f-fa35-0a8b-8c5476cb9ff6@arm.com> Date: Wed, 24 Mar 2021 15:51:14 +0000 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.16; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: <875z1gk6fo.wl-maz@kernel.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-GB Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 24/03/2021 13:49, Marc Zyngier wrote: > 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. Marc, I think it would be better to hold on pushing those patches until we have a clarity on how things will go. Sorry for the confusion. Kind regards Suzuki > > Thanks, > > M. >