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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 EAD16C2D0EF for ; Fri, 17 Apr 2020 15:33:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CBC5F208E4 for ; Fri, 17 Apr 2020 15:33:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729118AbgDQPdN (ORCPT ); Fri, 17 Apr 2020 11:33:13 -0400 Received: from foss.arm.com ([217.140.110.172]:52920 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728542AbgDQPdN (ORCPT ); Fri, 17 Apr 2020 11:33:13 -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 024B71FB; Fri, 17 Apr 2020 08:33:13 -0700 (PDT) Received: from [192.168.0.14] (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 98A903F73D; Fri, 17 Apr 2020 08:33:11 -0700 (PDT) Subject: Re: [PATCH v3] x86/resctrl: Preserve CDP enable over cpuhp To: Reinette Chatre , Borislav Petkov Cc: x86@kernel.org, linux-kernel@vger.kernel.org, Thomas Gleixner , Fenghua Yu , Ingo Molnar , "H . Peter Anvin" , Babu Moger References: <20200221162105.154163-1-james.morse@arm.com> <8d84868f-4045-8d69-ed45-d0f0629ba25c@intel.com> <20200417141841.GD7322@zn.tnic> From: James Morse Message-ID: <2030b4e2-bf52-592c-ac67-ddc2aa5f918c@arm.com> Date: Fri, 17 Apr 2020 16:33:10 +0100 User-Agent: Mozilla/5.0 (X11; Linux aarch64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi guys, On 17/04/2020 15:57, Reinette Chatre wrote: > On 4/17/2020 7:18 AM, Borislav Petkov wrote: >> On Wed, Apr 15, 2020 at 08:57:34AM -0700, Reinette Chatre wrote: >>> Hi Thomas and Borislav, >>> >>> Could you please consider this patch for inclusion as a fix for v5.7? >> >> Do you mean by that that I should add >> >> Cc: >> >> so that it goes to stable? Is the CC-stable still required? I've seen a 'Fixes' tag on its own cause patches to get picked up... >> The commit in Fixes: is from 4.10-ish times... >> > > Borislav: Sorry about that and thank you very much for catching this > omission. Yes, this patch needs to go to stable. > James: would you be able to do the backports to stable? Please note that > support for L2 and L3 CDP was added across Linux versions and the > resctrl files moved around since then so the backport would need some > changes to address this issue in all versions. Yes, certainly! Thanks, James