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 4860235C1A5; Tue, 18 Nov 2025 14:11:39 +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=1763475101; cv=none; b=NWbB/JySnMWi1Kp2muMrzIFAHmPQN6zwXR5lqm10EhQExP4xdg/AO9Z4q1oFxH/fbQLqFTLppK6nzxuQ5Xuwzp0RKqeadagXzP8CVzp4EbKehqk4TNtxzwypvRwsT36z3E4G4OSoELUmBiNivBetW6Tt4l0D1R6azWcr7gBD3sE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763475101; c=relaxed/simple; bh=lnFjOA9F2o/b7zV8Wir53ekV4hSg9x8MBNlVqgmyT9U=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=EvcharG4IGsyQ3vb+7IxfUACerov2TGXkeIGwG4KNpZIlZA3cx7YVJVP1k/xkf4rvm1YuTWneVGcJk95OBqlbyvQOjJYWeQaoQ9bXf1zC3unyi3+klr4qgFijir2MMCJzXVFMUfTMmqmScxQsCkaxdCQrnsf7rfdq8RboJ1+n94= 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 994C1FEC; Tue, 18 Nov 2025 06:11:30 -0800 (PST) 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 2ADE73F740; Tue, 18 Nov 2025 06:11:33 -0800 (PST) Message-ID: <753f4d26-efa9-4ffd-a820-7c2a53c0bc5f@arm.com> Date: Tue, 18 Nov 2025 14:11:31 +0000 Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 00/33] arm_mpam: Add basic mpam driver To: Drew Fustini Cc: james.morse@arm.com, amitsinght@marvell.com, baisheng.gao@unisoc.com, baolin.wang@linux.alibaba.com, bobo.shaobowang@huawei.com, carl@os.amperecomputing.com, catalin.marinas@arm.com, dakr@kernel.org, dave.martin@arm.com, david@redhat.com, dfustini@baylibre.com, fenghuay@nvidia.com, gregkh@linuxfoundation.org, gshan@redhat.com, guohanjun@huawei.com, jeremy.linton@arm.com, jonathan.cameron@huawei.com, kobak@nvidia.com, lcherian@marvell.com, lenb@kernel.org, linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, lpieralisi@kernel.org, peternewman@google.com, quic_jiles@quicinc.com, rafael@kernel.org, robh@kernel.org, rohit.mathew@arm.com, scott@os.amperecomputing.com, sdonthineni@nvidia.com, sudeep.holla@arm.com, tan.shaopeng@fujitsu.com, will@kernel.org, xhao@linux.alibaba.com References: <20251107123450.664001-1-ben.horgan@arm.com> From: Ben Horgan Content-Language: en-US In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi Drew, On 11/16/25 17:16, Drew Fustini wrote: > On Fri, Nov 07, 2025 at 12:34:17PM +0000, Ben Horgan wrote: >> Hi all, > [snip] >> The rest of the driver can be found here: (no updated version - based on v3) >> https://git.kernel.org/pub/scm/linux/kernel/git/morse/linux.git mpam/snapshot/v6.18-rc1 > > Does anyone know of a hosting platform that offers ARM machines that > have MPAM? As far as I know there aren't any. There is some MPAM support in the Orion Radxa board which is likely the cheapest option. The MPAM acpi table isn't in the firmware though so you'd need to load a custom table. James has this working. > > I see there are Ampere systems on Oracle but I wasn't sure if those have > MPAM. > > I'm getting a RISC-V QoS patch series ready (Ssqosid ext and CBQRI spec) > and I'd like to get a better understanding of how resctrl works on MPAM > in practice. > > Thanks, > Drew Thanks, Ben