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 6B790C531D0 for ; Tue, 28 Jul 2026 02:21:52 +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=0ASOYmyKNB3RgIhGnkeOzdiUBhyogbI5E8BpZDTM+OM=; b=OJKxQ2v8O74tlHJF9S5J2RvzQS 9tj93tsduZUtIWm+S1iPpq3RkGl+KyaQKS//NijZuKRheaUul/MOyjv/7Gt/KX81LFmsC/uGoCwhf riEt3p74JXPn+ZVX30MIahAHgHZv538UjoWU5qo7T+34Pg/aw5GTXXrGjPGrPpS4uCcimBLvNk/Aj F3THa2Hu032LFXHerzo4dqUNmm+ndvMJ/fJ0Dz19+VLmrtoyhkAj5ISt2CXH7b5lu/a9neED2NlWz 5bYGN7VMAa0DON5S8fUiCV9KigEug6nlmexjDBpCBB5Cs6RLSP7DAZBRYRvrhHf69m6gYsg0nQmE0 BSZV+XjA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1woXRs-00000004G1U-1lRg; Tue, 28 Jul 2026 02:21:40 +0000 Received: from canpmsgout09.his.huawei.com ([113.46.200.224]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1woXRp-00000004G0q-3Fjx for linux-arm-kernel@lists.infradead.org; Tue, 28 Jul 2026 02:21:40 +0000 dkim-signature: v=1; a=rsa-sha256; d=huawei.com; s=dkim; c=relaxed/relaxed; q=dns/txt; h=From; bh=0ASOYmyKNB3RgIhGnkeOzdiUBhyogbI5E8BpZDTM+OM=; b=AfwlhHKAm+GHhb8SEtnX2XkCsp7MyPl+wZ8e70crIdO7WCacoF+tvKMOFjn+dzgrXTtazz/c9 YG7l9+PWbVlPVt1tV9epDu0twtXI42z62XqZb2B71zawtqDUhE+OB/cY5vDmHMCNFDrxyfL0tBA lq5b6xRpQMhBkAAV190Hixk= Received: from mail.maildlp.com (unknown [172.19.162.92]) by canpmsgout09.his.huawei.com (SkyGuard) with ESMTPS id 4h8Jqv2syfz1cySC; Tue, 28 Jul 2026 10:11:55 +0800 (CST) Received: from kwepemj200003.china.huawei.com (unknown [7.202.194.15]) by mail.maildlp.com (Postfix) with ESMTPS id 2EA6F40565; Tue, 28 Jul 2026 10:21:20 +0800 (CST) Received: from [10.67.120.170] (10.67.120.170) by kwepemj200003.china.huawei.com (7.202.194.15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Tue, 28 Jul 2026 10:21:19 +0800 Message-ID: <4e71a9e4-5e15-4ff7-a137-8ed5b4aba721@huawei.com> Date: Tue, 28 Jul 2026 10:21:18 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/5] Add debugfs support for ARM SMMUv3 To: Nicolin Chen CC: , , , , , , , , , , , References: <20260328101706.3448655-1-xiaqinxin@huawei.com> From: Qinxin Xia In-Reply-To: Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-Originating-IP: [10.67.120.170] X-ClientProxiedBy: kwepems500001.china.huawei.com (7.221.188.70) To kwepemj200003.china.huawei.com (7.202.194.15) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260727_192138_317838_5C237BBE X-CRM114-Status: GOOD ( 11.83 ) 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 2026/5/27 08:07:17, Nicolin Chen wrote: > On Wed, May 20, 2026 at 02:37:06PM +0800, Qinxin Xia wrote: >> Add a comprehensive debugfs framework to the ARM SMMUv3 driver, >> providing visibility into internal hardware state for debugging >> and performance analysis. The debugfs entries are organized under >> /sys/kernel/debug/iommu/arm_smmu_v3/, with per-SMMU instance directories >> and per-device stream table entries. >> >> Each SMMU instance provides: >> - capabilities – static SMMU features and queue sizes. >> - registers – SMMU key registers. >> - stream_table/ – a directory per device with subdirectories per Stream ID. >> >> Each Stream ID subdirectory contains: >> - ste – the Stream Table Entry in decoded and raw format. >> - cd – all valid Context Descriptors (Stage 1 translation tables) associated with the device. >> - a symlink named with the device's BDF/name pointing to its sysfs directory for easy navigation. >> >> /sys/kernel/debug/iommu/arm_smmu_v3/smmu0/stream_table/ >> ├── / >> │ ├── ste >> │ ├── cd >> │ └── >> >> Changes since RFCv2: >> Address review comments from Nicolin Chen, kernel test robot, and Sashiko >> automated review: > > This seems to reuse the same message ID as RFCv2's? > > So, it ended up with attaching to RFCv2, on my side (mutt). > > Sashiko also failed to review against the new patches: > https://sashiko.dev/#/patchset/20260328101706.3448655-1-xiaqinxin%40huawei.com > > Nicolin > Sorry for the late reply – I've been juggling a few things and missed this update earlier. I'll fold all the fixes into the next spin. Expect v3 soon.:-) -- Thanks, Qinxin