From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 253B2606A325 for ; Mon, 26 Oct 2026 08:21:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=I7zK9HPI; dkim=pass (1024-bit key, unprotected) header.d=huawei.com header.i=@huawei.com header.a=rsa-sha256 header.s=dkim header.b=oVPQn6sL DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:CC:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Unsubscribe-Post: List-Owner; bh=YdEI+p6jv0sS8rZSJUqdhDsNGa61fFMt9xG3DcZgZbs=; b=I7zK9HPI/XVOvd SI5hOZlSj6fp5w90YrDPuL9K+SV85FzGlklhIePfwoJH1JN6Mc4Mq1dNjYnQb/m9nmVNaKAVpQd7O VQ1nup0AtNktl5nHzBzV1WNrhN59UmY2jkLVnP1EWLXHx9L2AVrBeCsU5SYBnNcyRiWLqSSHjUyQV GlGGkjYxIxHouDQspANDxl0xBF37WXVUWuUXZFUJv4AxBUEGtPbVYxumfqSM8OWmLkW2n07sPcwgy YWUR7eT8yyBBTXz63Oe9mjD9m9kS/ag+dQTXrgjuySgQ5pmEuMv4N96ANWwcg9VvHNs8G6pmOfoNA wkb12YXZnn1Ye/5rTdNQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xLFwr-00000001w8S-0HoY; Mon, 26 Oct 2026 08:20:53 +0000 Received: from canpmsgout02.his.huawei.com ([113.46.200.217]) by bombadil.infradead.org with esmtps (Exim 4.100.1 #2 (Red Hat Linux)) id 1xLFwn-00000001w7x-37qE for linux-arm-kernel@lists.infradead.org; Mon, 26 Oct 2026 08:20:52 +0000 dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=YdEI+p6jv0sS8rZSJUqdhDsNGa61fFMt9xG3DcZgZbs=; b=oVPQn6sLHuRWMbiYz8fauQ35o+f8hfS6lNAgFzK9Y2UlBdudqI9MTAS1a0inhE9oWBgK5CfLa Pu6Ecwyu2JCYziujEzihrXiFoS/cWVofRT7AOa+uDl2ZO7GTj8OBO+6jxKL9evIpHLmoDNi7VhS hx5g9ytLyLRHjdxyu82TBQs= Received: from mail.maildlp.com (unknown [172.19.162.223]) by canpmsgout02.his.huawei.com (SkyGuard) with ESMTPS id 4jCmlV2VMXzcbZ0; Mon, 26 Oct 2026 16:20:22 +0800 (CST) Received: from kwepemk200008.china.huawei.com (unknown [7.202.194.74]) by mail.maildlp.com (Postfix) with ESMTPS id 5C3D840561; Mon, 26 Oct 2026 16:20:32 +0800 (CST) Received: from [10.67.110.68] (10.67.110.68) by kwepemk200008.china.huawei.com (7.202.194.74) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.45; Mon, 26 Oct 2026 16:20:31 +0800 Message-ID: <90e7109f-4953-436b-ac77-d801da6deb88@huawei.com> Date: Mon, 26 Oct 2026 16:20:30 +0800 X-Archived-By: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH RFC v2 00/19] arm,fs/resctrl: ARM MPAM MB_NODE support To: Reinette Chatre , Fenghua Yu , Tony Luck , Ben Horgan , James Morse , Dave Martin , Will Deacon , Catalin Marinas , Shaopeng Tan , Chen Yu , Babu Moger , Drew Fustini , Vikram Sethi , Shanker Donthineni , Newton Liu , Richard Cheng CC: , References: <20260831172245.42253-1-fenghuay@nvidia.com> <87ecba5b-e396-45db-bab0-4eff0f30cb25@huawei.com> <96795f1b-08ff-4d26-9b51-8c54bcbe537d@intel.com> From: Jinjie Ruan In-Reply-To: <96795f1b-08ff-4d26-9b51-8c54bcbe537d@intel.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-ClientProxiedBy: kwepems500002.china.huawei.com (7.221.188.17) To kwepemk200008.china.huawei.com (7.202.194.74) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261026_012050_135679_FEE704FA X-CRM114-Status: GOOD ( 19.02 ) X-Spam-Score: -2.1 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-12.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 在 2026/10/23 22:51, Reinette Chatre 写道: > Hi Jinjie, > > On 10/22/26 6:23 PM, Jinjie Ruan wrote: >> >> >> 在 2026/9/1 1:22, Fenghua Yu 写道: >>> This series enables MBA bandwidth control emulation on ARM MPAM when the >>> default MB control is disabled, using a node-scoped MB_NODE control as >>> the native backend. It extends memory-bandwidth monitoring and >> >> Hi everyone, >> >> We also have the requirement for the MPAM node-scoped MB_NODE control. >> Are there any follow-up plans for this feature? >> >> Is there anything I can help with? >> > > ... > >>> >>> Apply the patches on top of [2]. >>> > > ... > >>> >>> This series is in https://github.com/fyu1/linux/ cpu_less.rfc.v2/ >>> which is on top of [2]. >>> > > ... > >>> >>> [1] [RFC v2] mpam,x86,fs/resctrl: Generic schema description Proof of Concept https://lore.kernel.org/lkml/d258a32f-12d5-464d-abe9-4720fb3e44b3@intel.com/ >>> [2] Reinette's resctrl control branch RFC v2: git://git.kernel.org/pub/scm/linux/kernel/git/reinette/linux.git branch resctrl/controls_rfc_v2.4 >>> > This work depends on [2] around which I believe all discussions have now settled > with the planned changes shared during LPC: > https://lpc.events/event/20/contributions/2368/attachments/2066/4625/resctrl_2026_combined.pdf > > Please note, as highlighted in > > https://lore.kernel.org/lkml/9d2f589a-7d10-44ee-a7a4-7d75d860e988@arm.com/ Hi Reinette， Thank you very much for sharing. > > as well as the LPC presentation, that the support for MB_NODE is planned to look > different from what is presented in this RFC. > > Upstreaming of [2] started with two series currently outstanding: > > "x86,fs/resctrl: Cleanups in preparation for multiple controls support" > https://lore.kernel.org/lkml/cover.1791406459.git.reinette.chatre@intel.com/ > > "arm_mpam: resctrl: Separate MPAM domains" > https://lore.kernel.org/lkml/cover.1792443633.git.reinette.chatre@intel.com/ Let me start with these two patch sets. > > I see that you already started to take a look at the MPAM changes. That is much appreciated. > Any reviews are much appreciated. > > Once the above two outstanding series land I will work on the next batch of the foundational > work on which the MB_NODE support can be created. Thank you for your detailed guidance. I will keep pace with everyone and help review and test the latest upstream changes. > > Reinette -- Best regards, Jinjie