Received: by 2002:a05:6358:16cc:b0:ea:6187:17c9 with SMTP id r12csp6817855rwl; Mon, 9 Jan 2023 13:31:58 -0800 (PST) X-Google-Smtp-Source: AMrXdXvYZRrCr6dOS+Bu/7C/id5tdtV4qn1wy7TLey97gtw9iwaul3LUfMRYZzBHC2zwfprFwyPk X-Received: by 2002:a17:906:1410:b0:7c0:eba3:e2e with SMTP id p16-20020a170906141000b007c0eba30e2emr53416262ejc.31.1673299918676; Mon, 09 Jan 2023 13:31:58 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1673299918; cv=none; d=google.com; s=arc-20160816; b=YyEnkIeBPHCYCmc1BnS5yASzutqR04On3Azn7UQAMofCNMLVRH14FjNJgJPdMVlly/ Vlb42k4ixXbSMzM/aIXHTdzvbX64la2aIV7y5O9GbI3jyuoYf6Mzr6is8cYrTwHGsJwI ZXhOjZG5/ajDRdzvV43MAMj6uFIyKVpcEMEDILCVZfYbfBGDiMF4ef6FrggL2RL5g6p2 ukXI2mr3twrVqU+YAocOzvUqI0PijnmhQSTZLXp11i34i12BM34S2xYS0qUImpi7o80B oLeaAUxKsUgIWToy3eBjCPZCU3SImkODpJnIwujFkuUCOi/KiaU0ObRQ7kdnA7EzJwOD LmmA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:in-reply-to:content-disposition:mime-version :references:message-id:subject:cc:to:from:date:dkim-signature; bh=gySK7Y4MkaBtcEVthJKsByGaRZlyKueoBfLBNDapHgY=; b=zCv4lfk86XFRrmFOMcO/JcVUhDcTqp7Qtk4lVxYqjsv/kwwOR/8JWCVelDWNrDEL2+ 7AC+AmZINajEDPpKas3zQSaMIL+ZCzgyL4+iPV7aaoHgjYvS3mDWvmrUotZptUSNEbJ9 hOl2xflMqag3o0nm7XwPQg4Ezs27TApG8j3gSWiBz18fEuJ4TpyuyeKv1nOPFIUpG2VA 14XavRAlmvqzUw1LfEMdso85MUacWSCTRfprphTf+WreC+ZzYHKhzySfv4T79fmJnesO VnxYVBKR/c/ckEZ0Q69bhiRl2XQ/jof3P+Hyb19CIrR2oGl94AtjMD0hg+WnxwW0r04h 75mQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=GvrYVgkZ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id xa11-20020a170906fd8b00b007adb388df38si9293245ejb.706.2023.01.09.13.31.45; Mon, 09 Jan 2023 13:31:58 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@alien8.de header.s=dkim header.b=GvrYVgkZ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=alien8.de Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238033AbjAIVM3 (ORCPT + 53 others); Mon, 9 Jan 2023 16:12:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50376 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238027AbjAIVL4 (ORCPT ); Mon, 9 Jan 2023 16:11:56 -0500 Received: from mail.skyhub.de (mail.skyhub.de [IPv6:2a01:4f8:190:11c2::b:1457]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B676A496C5; Mon, 9 Jan 2023 13:07:27 -0800 (PST) Received: from zn.tnic (p5de8e9fe.dip0.t-ipconnect.de [93.232.233.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.skyhub.de (SuperMail on ZX Spectrum 128k) with ESMTPSA id 0FA0C1EC03B3; Mon, 9 Jan 2023 22:07:26 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alien8.de; s=dkim; t=1673298446; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:in-reply-to:in-reply-to: references:references; bh=gySK7Y4MkaBtcEVthJKsByGaRZlyKueoBfLBNDapHgY=; b=GvrYVgkZdF++oHivFFGPvDjDBuXMbxO1Y9imd7K0YuYv7FqEjckX3vyvO0VpYggdcFIOrP IqVS3L9e8D7qNC95pHO8b/RreYk0KJpK02Zz0cp4JY4Va8s2ZOrtg6gvgn3taPGGHUraK1 LpOaRUq9JHPu77gvWCzVMEd0J+/OCH0= Date: Mon, 9 Jan 2023 22:07:20 +0100 From: Borislav Petkov To: "Moger, Babu" Cc: corbet@lwn.net, reinette.chatre@intel.com, tglx@linutronix.de, mingo@redhat.com, fenghua.yu@intel.com, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, paulmck@kernel.org, akpm@linux-foundation.org, quic_neeraju@quicinc.com, rdunlap@infradead.org, damien.lemoal@opensource.wdc.com, songmuchun@bytedance.com, peterz@infradead.org, jpoimboe@kernel.org, pbonzini@redhat.com, chang.seok.bae@intel.com, pawan.kumar.gupta@linux.intel.com, jmattson@google.com, daniel.sneddon@linux.intel.com, sandipan.das@amd.com, tony.luck@intel.com, james.morse@arm.com, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, bagasdotme@gmail.com, eranian@google.com, christophe.leroy@csgroup.eu, jarkko@kernel.org, adrian.hunter@intel.com, quic_jiles@quicinc.com, peternewman@google.com Subject: Re: [PATCH v11 04/13] x86/cpufeatures: Add Bandwidth Monitoring Event Configuration feature flag Message-ID: References: <20230109164405.569714-1-babu.moger@amd.com> <20230109164405.569714-5-babu.moger@amd.com> <5afd0a7c-3fbe-dfea-f1b4-2fc35fbb4f13@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <5afd0a7c-3fbe-dfea-f1b4-2fc35fbb4f13@amd.com> X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jan 09, 2023 at 01:49:09PM -0600, Moger, Babu wrote: > All the QoS(or RDT) features are visible so far. If we make them visible, > users can easily figure out if this specific feature is supported or not. What would be the actual, real-life use case where the presence of those flags in /proc/cpuinfo is really needed? -- Regards/Gruss, Boris. https://people.kernel.org/tglx/notes-about-netiquette