From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 91BF91EDA03 for ; Sun, 9 Nov 2025 21:59:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762725592; cv=none; b=mlSXuwgvpEmMgMrd7iocqboavpMTJn0+uILLzNdiB/quKvoIUX67I4wYDQft2jf7cBCRV0dsFkuEtBv3pzD9giAocT/MWhG+KyNceGQXY1Lh4RIo3zzcDM3qSF455WGhUyERrt1xlpJP1NMmod2G+wZ6Qkxgy4YqbrJtwagCACM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762725592; c=relaxed/simple; bh=IU3Eeybi/pAl8nQm4Ma+Clpr7lyLy/AS2VPSGSRA6Tk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=pMRNaiiqX0NbtfMY5KEr1GVL0VaaePbqduy55zFQH8ktF833oBuqUKu/TMsS0JmB7ssyu7fwbF2WsLn/B+din4hh/rOp13r1VHWVULNNLzxMiXKWs3WyUDkN4HGps9Lql90w1SD9iUPStGbt45QKJ0rQfR2OA81/d6TxJjJztGY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=gOQ4A1a/; dkim=pass (2048-bit key) header.d=redhat.com header.i=@redhat.com header.b=MglZBJ2a; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="gOQ4A1a/"; dkim=pass (2048-bit key) header.d=redhat.com header.i=@redhat.com header.b="MglZBJ2a" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1762725589; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Vrkp13U75D5ocju9TrltPfjNVc3UEKucGVy+HHM/EeY=; b=gOQ4A1a/UAuGOK5LcwsV/NZYUX4ILfNNRnLZFnCSFGk98XcVWIW5iPRnt8DaYGpqj/9Tvi X6N15TEIbC22Kkdnr+ik4NcKqaGfsHvMwm5Ii/WucvYsxJ5zqgkBerDJRUEAdnEn9JkL+r ALO0tgNZlmzdkCEmiIk6jKXndu0ZJX8= Received: from mail-pj1-f72.google.com (mail-pj1-f72.google.com [209.85.216.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-660-Sp1rnqATPgKjaiqmUXEF2w-1; Sun, 09 Nov 2025 16:59:48 -0500 X-MC-Unique: Sp1rnqATPgKjaiqmUXEF2w-1 X-Mimecast-MFC-AGG-ID: Sp1rnqATPgKjaiqmUXEF2w_1762725587 Received: by mail-pj1-f72.google.com with SMTP id 98e67ed59e1d1-340c07119bfso5822035a91.2 for ; Sun, 09 Nov 2025 13:59:48 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=google; t=1762725587; x=1763330387; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=Vrkp13U75D5ocju9TrltPfjNVc3UEKucGVy+HHM/EeY=; b=MglZBJ2aOxaDK6Oyfpd/BMUZz1n7fd345BUxyNBXOrHTYXDkxQCULW2b3CLUrcS/mJ G81pMDYRrly2/87ucqloIyiX1iM6ZQvUMGBltSyWdSDMNgtssB6rPiZq84Zbcvcn7WpY iUeJSWm0EWbRgKcGoAxMU5VeAJB5J3hRUq6OGH1oqBbCVmjBGwFtRYqdLGB/7X51IN4U D5rEsbBYPvnJ4zS4s06mo5rvCtyWJ2U5+E28carkujVJrTAvEq8btCaPQx7uiDzksBUh Kc/slDUaQScCSj5AiPLJBhqVU9qp1LZ121h0jzJgUvpDLsAuXIP8TrQVEeNDhqSL/vPz qAAQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1762725587; x=1763330387; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-gg:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=Vrkp13U75D5ocju9TrltPfjNVc3UEKucGVy+HHM/EeY=; b=DtAvyTYy76w2eecIXgWD7I8zowNCrvhf0c9gj1+PHcp9DxEeGAkORpH2U3sWog+qah Z/5LEGGYBWRWkTORHAefN9SXOCyTbp3+Bs0RWAyNLxWoEO5vMPm49CP2DJ7n98XKB+eO 715Megsv9Zh8zNvZ9CuEGege+dF8Z1OFQvIq9vh+aHQ/4HWev0+LJZHsdbqsvfmoU8u9 zhDRbJBgPTERZ7Mf6L6O6iHM9/VOgTyutf4TN0V+Sx9NLzCMKTn/aZYIHwX5TcTPMSOr jIV01W1keehY9NYPZghtR+KeBYvuksUAE5tcv6z7bSQtnGxSv6bGSyXKYOGsqdCRAv/L 1n/w== X-Forwarded-Encrypted: i=1; AJvYcCUf/lZa7VogojgFDUPMetuIzkoUXL9onr3DCl+yKLGuN0gra+TX1VUkN5J6H0TffLyMm1h05ckw437x@vger.kernel.org X-Gm-Message-State: AOJu0Yw++PXBQvZImjKnajjXbzweb/Y3IuamUdO7YdIMfQd5V+kI/Qyd RPKcQ5matI6t0tLQgltWxgqyjPOE677Cr5P0+sBi/PHWJGtwVXa0Xq3Z0fCo0v9UVIE1QMU4In6 hf316dKwQkIBv0G63g1RjKeFhSgiam6ppKoFKeWzq8St0+ixdyueT7yDdMuIx5KA= X-Gm-Gg: ASbGncuKGU5tc/NqfAElFnwe9dMNHvgPaUIzWyZDzh2NZ41z0msT8KReGE5gDizHPzN g+UMej39rClzZh0NFskGcjG1cXBaN7Lz4Ua3OyDaFKC0Q35BwdlplbLXFv0rPoLWW9Xwko96Obi 35cO4gCWIICmeOBoDrrlzBDtiEULHrSGxSwQMpdEaR4bM60tY1bZjmGQMCbgAOCrDHwQVpEC8K0 xA3ycca9FCgVp3NwQsBJLwehYLp7grssMduKsgjw8WSZRPuqXnB/9syFRTbrNQBJL34wSmBR94/ PFnJhOar1OiR/5+QKcoZ9s51uoZJxyg3iNc0p6QHe2zDrp7tvx0oCd6icEidK0cpiVZXAYlxN68 yA7bgptTDp6o4XViWWiP1Xi03tJ6lQjT6ugeEYqI= X-Received: by 2002:a17:90a:ec84:b0:340:b86b:39c7 with SMTP id 98e67ed59e1d1-3436cb91cdbmr8688586a91.11.1762725587161; Sun, 09 Nov 2025 13:59:47 -0800 (PST) X-Google-Smtp-Source: AGHT+IE3A3I4/3RLhYe1QQYreru6FNEuBJIm7pFjvEZOnSNhvwUxUwbVCr6B7zDVjGaDu7x0cbLDOA== X-Received: by 2002:a17:90a:ec84:b0:340:b86b:39c7 with SMTP id 98e67ed59e1d1-3436cb91cdbmr8688543a91.11.1762725586835; Sun, 09 Nov 2025 13:59:46 -0800 (PST) Received: from [192.168.68.51] (n175-34-62-5.mrk21.qld.optusnet.com.au. [175.34.62.5]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-341a699d6dfsm15532033a91.16.2025.11.09.13.59.34 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 09 Nov 2025 13:59:46 -0800 (PST) Message-ID: Date: Mon, 10 Nov 2025 07:59:33 +1000 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 17/33] arm_mpam: Merge supported features during mpam_enable() into mpam_class To: Ben Horgan , james.morse@arm.com Cc: 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, 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, Shaopeng Tan References: <20251107123450.664001-1-ben.horgan@arm.com> <20251107123450.664001-18-ben.horgan@arm.com> Content-Language: en-US From: Gavin Shan In-Reply-To: <20251107123450.664001-18-ben.horgan@arm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 11/7/25 10:34 PM, Ben Horgan wrote: > From: James Morse > > To make a decision about whether to expose an mpam class as > a resctrl resource we need to know its overall supported > features and properties. > > Once we've probed all the resources, we can walk the tree > and produce overall values by merging the bitmaps. This > eliminates features that are only supported by some MSC > that make up a component or class. > > If bitmap properties are mismatched within a component we > cannot support the mismatched feature. > > Care has to be taken as vMSC may hold mismatched RIS. > > Signed-off-by: James Morse > Reviewed-by: Ben Horgan > Reviewed-by: Jonathan Cameron > Reviewed-by: Fenghua Yu > Tested-by: Fenghua Yu > Tested-by: Shaopeng Tan > Tested-by: Peter Newman > Signed-off-by: Ben Horgan > --- > drivers/resctrl/mpam_devices.c | 214 ++++++++++++++++++++++++++++++++ > drivers/resctrl/mpam_internal.h | 3 + > 2 files changed, 217 insertions(+) > Reviewed-by: Gavin Shan