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 8A4D2442FD3 for ; Wed, 29 Jul 2026 10:40:32 +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=1785321634; cv=none; b=nJN3qz4tirKgHlqu98bHHHxDK1odMJY9ShdlQmQHdk8ca+D3JKvPs6LngS4cRjURXjdsfByX8LCAoUFBHAaQiO3qa5jC8Fpdp/Ykxx6AXJ21HLZ1/WvrajBjvLGa8IYgmNfLazJnPeBegEoHX8+KLPJdYghMFXLtPQsZy6wEJxA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785321634; c=relaxed/simple; bh=DCWggK9HdejFC4QCwQcCIZqhPjEXoYjYmhah3dVOUWc=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=DazN77MGXIId0VwIL6h7FStbquYKQSVTdWvahwagcsMCWNSgEW0QDuBR0rTHl3b+O1N8d4Z/N0j1Vh87mfjv2iT3kDrpE5jp729ZlwPribn/l+XD7/ZdQfFLXpFRxYwwAYP740iv3XENkC0lvTluQwVQEr6H/EfJBWPbadcExS0= 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; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=oxsqFAuZ; 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 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="oxsqFAuZ" 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 BB9F71688; Wed, 29 Jul 2026 03:40:27 -0700 (PDT) Received: from [10.2.212.8] (e134344.arm.com [10.2.212.8]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id C51E53F66F; Wed, 29 Jul 2026 03:40:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1785321631; bh=DCWggK9HdejFC4QCwQcCIZqhPjEXoYjYmhah3dVOUWc=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=oxsqFAuZfkdxKLl75vbVcDb0Wzdx90Ft6r04yRCmlZnbesJVM0LV0DDFgw2WPntG0 rb14Q1j/Y40/Yo9tzoFrfmUn6Y4vQXhGvzaAOXAIe+YLSP2grcM8wsSnsosuM46jiC bL7RzrSDF8WnqWmNroYOI4pTQU9VJ7s4yU/ozXA8= Message-ID: Date: Wed, 29 Jul 2026 11:40:26 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Thunderbird Daily Subject: Re: [PATCH v5 0/5] arm_mpam: resctrl: Counter Assignment (ABMC) To: Gavin Shan Cc: amitsinght@marvell.com, baisheng.gao@unisoc.com, baolin.wang@linux.alibaba.com, carl@os.amperecomputing.com, dave.martin@arm.com, david@kernel.org, dfustini@baylibre.com, fenghuay@nvidia.com, james.morse@arm.com, jic23@kernel.org, kobak@nvidia.com, lcherian@marvell.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, peternewman@google.com, punit.agrawal@oss.qualcomm.com, quic_jiles@quicinc.com, reinette.chatre@intel.com, rohit.mathew@arm.com, scott@os.amperecomputing.com, sdonthineni@nvidia.com, tan.shaopeng@fujitsu.com, xhao@linux.alibaba.com, zengheng4@huawei.com, x86@kernel.org, leitao@kernel.org, kas@kernel.org, puranjay@kernel.org, usama.arif@linux.dev, kernel-team@meta.com References: <20260707162440.12132-1-ben.horgan@arm.com> <8e36f71d-598b-45bf-a3ea-6d44ff728877@redhat.com> Content-Language: en-US From: Ben Horgan In-Reply-To: <8e36f71d-598b-45bf-a3ea-6d44ff728877@redhat.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi Gavin, On 7/15/26 06:44, Gavin Shan wrote: > On 7/8/26 2:24 AM, Ben Horgan wrote: >> Version 5 of this series addresses a few review comments but is pretty >> similar to v4. The precursors in x86/cache have been merged so there is no >> longer a need for this to go through there. It's likely easiest if this >> goes through arm64. >> >> This series adds support for memory bandwidth monitoring. Counter assignment >> will be used for all platforms with memory bandwidth monitors rather than just >> those with insufficient counters as originally proposed. > > The tests on NVidia's grace-hopper machine looks good: (a) no error or warning is seen > from the kunit-tests; (b) L3 cache partitioning and MBW (soft) limiting aren't broken, > still working to me; (c) The counter 'mbm_total_bytes' can be assigned to newly created > group and it gets increased when workload runs in the group. > > Tested-by: Gavin Shan Thanks for the testing and reviews. Ben > > Thanks, > Gavin >