From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 699E0F34C58 for ; Mon, 13 Apr 2026 14:31:56 +0000 (UTC) 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-Owner; bh=Jo0hbjCjZvmie+u75EWVLstjM4G6yhKlbjKUttqbl8w=; b=dGS410ZQiLR/1tlzM9xjr7D+MN oDJ6Yq9g2SsXqdMiGSy5Sv4jP0kACqBGkNodIs13JthXJ23aBXAjFRtYm3vDwq/xkKidpcaXgtaRp IsqiE0S2zF5WvCxyAPibMkNi9r00fWp0JA7Sz2uXUATd7jyrVcW+J+pmWpxGkTtN+iCVJ8sShIz33 waawxD6b5qG7v6Z4iKd2XGmEiz1BPQSXtxHGyQ+ogim+l0gSeQj/OJvTy0Y/EJvKZ+yBw6AHV+xLy xygKzM1J7W0tQ7/6a0/v6dfn9P2GDUE/s3MnHhy/44Kwz+dAT2+WRZSI0ZeSKw1g091H+bF0oRZMU +TNdLHhw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wCIKL-0000000Frwj-0OQC; Mon, 13 Apr 2026 14:31:49 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wCIKI-0000000FrwB-0e9j for linux-arm-kernel@lists.infradead.org; Mon, 13 Apr 2026 14:31:47 +0000 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 727F6339; Mon, 13 Apr 2026 07:31:37 -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 B239D3F641; Mon, 13 Apr 2026 07:31:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1776090703; bh=Bq30PsvBig46HcczZd+NZdFILcN3Ad0q3W32R7+TqHw=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=tcYYyjmNQmbBlP/CXf6Tkt6kzenoZ6R7ZWifBjHdYs5iAuiRpjZLOPkfeChoQvwZp KpDX1ZKS4+myLT9ycjsrVWTJoQ3yKZBQ+L/NX3LI1l+6YhXausRfCgrThiN3VtAky4 DpGxmw9kcRkClHU9xfGrgpvXZlQpjx5tIKubCWFY= Message-ID: Date: Mon, 13 Apr 2026 15:31:37 +0100 MIME-Version: 1.0 User-Agent: Thunderbird Daily Subject: Re: [PATCH v6 00/40] arm_mpam: Add KVM/arm64 and resctrl glue code To: Fenghua Yu 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, gshan@redhat.com, james.morse@arm.com, jonathan.cameron@huawei.com, 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, catalin.marinas@arm.com, will@kernel.org, corbet@lwn.net, maz@kernel.org, oupton@kernel.org, joey.gouly@arm.com, suzuki.poulose@arm.com, kvmarm@lists.linux.dev, zengheng4@huawei.com, linux-doc@vger.kernel.org References: <20260313144617.3420416-1-ben.horgan@arm.com> <8c4f8019-f6eb-4a3b-a6cf-96e533bfa15f@nvidia.com> Content-Language: en-US From: Ben Horgan In-Reply-To: <8c4f8019-f6eb-4a3b-a6cf-96e533bfa15f@nvidia.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260413_073146_276290_5D4C121D X-CRM114-Status: GOOD ( 10.86 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 4/2/26 00:56, Fenghua Yu wrote: > > > On 3/13/26 07:45, Ben Horgan wrote: >> This version of the mpam missing pieces series sees a couple of things >> dropped or hidden. Memory bandwith utilization with free-running counters >> is dropped in preference of just always using 'mbm_event' mode (ABMC >> emulation) which simplifies the code and allows for, in the future, >> filtering by read/write traffic. So, for the interim, there is no memory >> bandwidth utilization support. CDP is hidden behind config expert as >> remount of resctrl fs could potentially lead to out of range PARTIDs being >> used and the fix requires a change in fs/resctrl. The setting of MPAM2_EL2 >> (for pkvm/nvhe) is dropped as too expensive a write for not much value. >> >> There are a couple of 'fixes' at the start of the series which address >> problems in the base driver but are only user visible due to this series. > > Tested-by: Fenghua Yu Thanks! Ben