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Fri, 23 Oct 2026 05:04:03 -0700 (PDT) X-Received: by 2002:a05:6102:8515:20b0:7cc:174b:f7b7 with SMTP id ada2fe7eead31-7ccc2d8f97emr718339137.0.1792757042539; Fri, 23 Oct 2026 05:04:02 -0700 (PDT) Received: from [192.168.226.26] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6b432c96badsm977598a12.14.2026.10.23.05.03.58 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 23 Oct 2026 05:04:01 -0700 (PDT) Message-ID: <1feb10d8-75f3-4dbf-9fae-807dc5a22c25@oss.qualcomm.com> Date: Fri, 23 Oct 2026 14:03:57 +0200 X-Archived-By: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH DNM v3 8/8] arm64: dts: qcom: kaanapali: Add MPAM MSC nodes for the L2 caches To: Yin Li , Ben Horgan , Rob Herring Cc: James Morse , Shanker Donthineni , Krzysztof Kozlowski , Conor Dooley , Catalin Marinas , Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich , Reinette Chatre , Fenghua Yu , Jonathan Cameron , Bjorn Andersson , Konrad Dybcio , Gavin Shan , Andre Przywara , Drew Fustini , =?UTF-8?Q?Ilpo_J=C3=A4rvinen?= , Shaopeng Tan , trilok.soni@oss.qualcomm.com, aiqun.yu@oss.qualcomm.com, ganapatrao.kulkarni@oss.qualcomm.com, Srivathsa L Rao , Huang Yiwei , linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, driver-core@lists.linux.dev, devicetree@vger.kernel.org References: <20261008-mpam-resctrl-dt-knp-support-v3-0-35196c2b43bf@oss.qualcomm.com> <20261008-mpam-resctrl-dt-knp-support-v3-8-35196c2b43bf@oss.qualcomm.com> <20261008210004.GA1318789-robh@kernel.org> <1d764a3d-7935-4e26-b1c2-92537e1d3811@oss.qualcomm.com> <893507ca-b956-474c-9124-92fbfc25e9ab@arm.com> <6e06228b-827a-4321-99c1-3e0e961abd61@arm.com> <86fee017-c9cb-4583-beab-4f29919fb518@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <86fee017-c9cb-4583-beab-4f29919fb518@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: VJMFOZLQJLkRVkioGV5oNVEf9Wo98Tr_ X-Proofpoint-Spam-Info: AW1haW4tMjYxMDIzMDA0NiBTYWx0ZWRfX3SBJnU9teKX9 DfdbuzaqS8ZViAB16puATk69odT2Z/WRIF5t4KBSfQLY3ElsuKhgyv2dVC0Y5SrUepJYXphemy5 +KAPumQmh03SNJZPXJtl/VcXQnxVBB8= X-Authority-Analysis: v=2.4 cv=VNZIDNPX c=1 sm=1 tr=0 ts=6adb4d34 cx=c_pps a=ULNsgckmlI/WJG3HAyAuOQ==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=u5pNeYj4kXT91oPWfH4A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=1WsBpfsz9X-RYQiigVTh:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDIzMDA0NiBTYWx0ZWRfX41Et0C/s4IZf k7J+PszE7ZUOeKfbDZktT1ytz2EndpxX31O+gfMJZiSVGFSJnXWHRa9fn5O2iN2ej4b/WzUv+3H x4X8xbEuzy6T07ulE5lHhgUZ12oG7J1eIBGj2Z7v8JQTKXFUNjkKxtTl2RO3DcRiLmp3PFWyGd3 9H9FHTR0bjKzcVsw/KW036k0hD7oKd4bOhqy7DIzyhUeVwqKc66nHaBMQfLt0fkaqAOWxOBYyR6 w+hTbpxbEdcsOzRyPi2SW2U5CU+D6FNc777NpOYXqJLvLghHkeGSlhIDYF7tXA5B96rS6ieszfy a3yrxSDSsU2JENuzIEjbst0WcCm9BxdVBPUONpjeiQAUwXSNt2A5izEM28c6iNYBBTxBuxILwIP +a04ULyguy2G73DyXMtstW6aRuymyPPETzRFaei74QKfQCmOifpR3+Gh9m9C2YMrrYfBEiyLS9A RrBuLi9rFNB1x0OTFUg== X-Proofpoint-ORIG-GUID: VJMFOZLQJLkRVkioGV5oNVEf9Wo98Tr_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-10-23_03,2026-10-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 suspectscore=0 bulkscore=0 adultscore=0 phishscore=0 impostorscore=0 spamscore=0 lowpriorityscore=0 malwarescore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610230046 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261023_050405_073667_85B59F28 X-CRM114-Status: GOOD ( 15.97 ) X-Spam-Score: -2.8 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-7.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On 10/14/26 9:09 AM, Yin Li wrote: > > > On 10/13/2026 6:37 PM, Ben Horgan wrote: >> Hi Yin, [...] > Hi Ben, Konrad, > > The original 0x10000 reflects the per-MSC register block size as > allocated in the KNP hardware — as Konrad noted, Qualcomm DTs tend to > use "how much register space is allocated for this block" rather than > "what the last used register ends" to avoid holes. > > We'd like to update it to 0x321c to give other platform authors a more useful reference, without exposing KNP-internal details such as address holes between blocks. In our case, we don't implement MPAMCFG_MBW_PBM, and — as you noted — the registers from 0x3000 onward are domain-specific; since we have no domains, those aren't used either. So the actual footprint we need is smaller than 0x321c, but showing the full 0x321c gives other authors a complete picture of the allocated register space. > > That said, this patch is marked DNM and is intended as a local > verification example only, not for merging. If you don't intend it to get merged, you can even put 0x12345 in there. But for future submissions that will have the intent to be merged, please stick to the 0x10000 size Konrad