From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=113.46.200.217 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793002846; b=Mnjg0atOWOrwE1nJ72rTL0qSlvlqLU2IhH9W/slU0KBpV+pFqXU2UnIykeTV84h9/03i c6us07+uJhlhzaGEyCLLWhOVq73Qngcs0B621ODOmMageiajkvP3ILZUNzIfsyTlIUmsu t9IrLPVNwkivYWvByJ/2xYxgNAx7hnwtQO6r69Agezo+3gBGkqkINSmiDt7JvVmT83tR0 Ix1njd9j1lVMhrdp9m6wPXwGxk6ULVAe9te0TSGxxtn07pt4rhXPyQ6UbvHUTLSXHRV2o q3tBABisGx0s9dzSlowqwspDVLqz7uaRiuit0vIRqMYu2TJbmq83OFK6mAb3rTHxKEw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793002846; h=DMARC-Filter:dkim-signature:Received:Received:Received:Message-ID: Date:MIME-Version:User-Agent:Subject:To:CC:References:From: In-Reply-To:Content-Type:Content-Transfer-Encoding:X-Originating-IP: X-ClientProxiedBy; bh=YdEI+p6jv0sS8rZSJUqdhDsNGa61fFMt9xG3DcZgZbs=; b=fDlSghVBu7H6+cz2NJTCHSG96CiFygw/OO+ZK6kIgnXPZNl6ydrCOa7NkxQFKOqeLsWm 2YO6KCoWbt1qhMBzPmcLxySKvssEHHyRqed9QucrKSGhbpblwRDiyEK7hbZ85X9nrM4kE qPzYbZTWwmSLv4UM1HQYlmIeDurjy1TPxWLVQkH7zE5HrASB/8epiKE8UH8yDCkNPsL/4 kLD6mlK5Cfi+0xOKd3pI9KLl1O2V/h8/S6fmT29TXv3oqVdQyXWWL3h8VtswGFilJxLku 6QDs5/99xrA/E+Jq7RvKJfkLc1//oPf4Cwvf+S2ZEGe7cmPReTkxFJBq+QPYynVYYfQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; dkim=pass header.d=huawei.com header.i=@huawei.com header.a=rsa-sha256 header.s=dkim header.b=oVPQn6sL; arc=none smtp.remote-ip=113.46.200.217 Received: from canpmsgout02.his.huawei.com (canpmsgout02.his.huawei.com [113.46.200.217]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A8314606A31F for ; Mon, 26 Oct 2026 08:20:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org A8314606A31F Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Authentication-Results: smtp.subspace.kernel.org; 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; 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-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list 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) 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