From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 3E28F277C86; Wed, 18 Mar 2026 11:16:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773832597; cv=none; b=l1al/sZR1I7M8KggY7/vD0aH5TporO/Z6WGEPlgQbbQToWwgZADZ8VnsldsdtQaDyGde413M4cv9PTUlAXn5QNPQFtENKwaFGaTBeJyEdIfCIYyE6F1BMqKjy6xskqPndmmpYrrc/jkQOTqVI29cam/QsOCyCkWSw7aNQ5MAvy4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773832597; c=relaxed/simple; bh=yHF5z9WeHp6mIoOEgq2tupUKg1OMJm89pGwBRBf02aE=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=okqNTBBUQ+UmIfCeEgRjTEzHXxa5NIMNrmbGuOwkFqofWGNGXUFjEIOQVE5GJkL7RWmbvCOINGBEgF76VwS3+hk8BLnKtuy+lAzw25ub1fzAtRrqU97DMeHTtICrFyzdBl356WL3GwIjAXsqvjnQwiIAgtXdPvEeEfwv4FskYoQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com 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 872DA1E2F; Wed, 18 Mar 2026 04:16:29 -0700 (PDT) Received: from [10.1.196.46] (e134344.arm.com [10.1.196.46]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 17CF93F73B; Wed, 18 Mar 2026 04:16:30 -0700 (PDT) Message-ID: <8dc8eb43-9bc5-46d3-8ce8-06d25fd5eeb7@arm.com> Date: Wed, 18 Mar 2026 11:16:29 +0000 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Thunderbird Daily Subject: Re: [PATCH v5 00/41] arm_mpam: Add KVM/arm64 and resctrl glue code To: Howard Zhang , James Morse Cc: "amitsinght@marvell.com" , "baisheng.gao@unisoc.com" , "baolin.wang@linux.alibaba.com" , "carl@os.amperecomputing.com" , Catalin Marinas , "corbet@lwn.net" , Dave Martin , "david@kernel.org" , "dfustini@baylibre.com" , "fenghuay@nvidia.com" , "gshan@redhat.com" , Joey Gouly , "jonathan.cameron@huawei.com" , "kobak@nvidia.com" , "kvmarm@lists.linux.dev" , "lcherian@marvell.com" , "linux-arm-kernel@lists.infradead.org" , "linux-doc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "maz@kernel.org" , "oupton@kernel.org" , "peternewman@google.com" , "punit.agrawal@oss.qualcomm.com" , "quic_jiles@quicinc.com" , "reinette.chatre@intel.com" , Rohit Mathew , "scott@os.amperecomputing.com" , "sdonthineni@nvidia.com" , Suzuki Poulose , "tan.shaopeng@fujitsu.com" , "will@kernel.org" , "xhao@linux.alibaba.com" , "zengheng4@huawei.com" References: Content-Language: en-US From: Ben Horgan In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi Howard, On 3/18/26 09:52, Howard Zhang wrote: > Hi Ben, James, > > I have a few questions regarding MPAM support in the kernel: > > Are there any plans to upstream L3 partitioning with capacity-based allocation (in addition to the existing way-based partitioning)? Yes, there is some preliminary work required to establish how new schema will be added to resctrl but I expect cache capacity, CMIN/CMAX, to be some of the first features to use it. [1] has some discussion on now to introduce new schema. [1] https://lore.kernel.org/lkml/aPtfMFfLV1l%2FRB0L@e133380.arm.com/ > > Thanks for your time. > > Best regards, > Howard Thanks, Ben