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Fri, 23 Oct 2026 02:03:16 -0700 (PDT) Received: from hu-parihar-hyd.qualcomm.com ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-cd8ba69ca4dsm586273a12.0.2026.10.23.02.03.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Oct 2026 02:03:16 -0700 (PDT) From: Abhinav Parihar To: srinivas.kandagatla@linaro.org, linux-arm-msm@vger.kernel.org Cc: Abhinav Parihar , gregkh@linuxfoundation.org, quic_bkumar@quicinc.com, ekansh.gupta@oss.qualcomm.com, linux-kernel@vger.kernel.org, quic_chennak@quicinc.com, dri-devel@lists.freedesktop.org, arnd@arndb.de Subject: [PATCH v2 0/6] arm64: dts: qcom: Remove FastRPC compute CB9 entries Date: Fri, 23 Oct 2026 14:33:02 +0530 Message-Id: <20261023090308.2898683-1-abhinav.parihar@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Authority-Analysis: v=2.4 cv=V7LoQuni c=1 sm=1 tr=0 ts=6adb22d6 cx=c_pps a=0uOsjrqzRL749jD1oC5vDA==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=FW0NidNlYbm5mj9sKN0A:9 a=mQ_c8vxmzFEMiUWkPHU9:22 X-Proofpoint-Spam-Info: AW1haW4tMjYxMDIzMDAzNSBTYWx0ZWRfX2iqmAL+id5jE Hsj+MOXIkbjdv98KpGtT4LfpCWvsmJFBaja6Ra4BmmL0xRWnBDREvnqyKdsTYW01TcubUp6lX8T D/xcSt48Ge6XekPXP7RVhK8Gwtezrf8= X-Proofpoint-GUID: Go4Xp-0BpQgCgbiA1cuaVVL2LYLDZrqT X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDIzMDAzNSBTYWx0ZWRfX6eiOAN+xiisg 5wtxOMgls67m3/x9KjWuBnAL9FKzfkBNGNW9YbqAE0jZaUG5cuJUNnyFft+hEQvrWRTZAxaqWQD LOeuRYM1gphhgVkuMw2yXaDrrNuLgoV4eVSUPdu5UGmWe3pG8EaPuUB1FOAVKnUH9W+izoQGfCn 4bAb7vBq6hO6FKL4sLlW+GDn0k3cEO+gOt+8PSpetSIzrUgZTGw96Ut6b6QaaxN421ozDhTxZCb x1hUuigkkBeXo4A56Y4rF2KhqicKtsULrCvup3uLanh/3N8f/iCjeQVBtEA7iGHFrOOsFdRfR7J SwHnZCvHw+C8vlXRO3e3Av6yT7Uq7ug8jL3Q65LuIBtvy4fSxd2q7UUntxnIw3lOKzSlpFonITT O0oobI0Gro12nas2zuQH8f9exGCaXBO4ap2RmoKLhguigOzt0j8RITp7TsseyG6Rb8+IxgfS/Zn 88LWPds0bmvrs1DceUA== X-Proofpoint-ORIG-GUID: Go4Xp-0BpQgCgbiA1cuaVVL2LYLDZrqT 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_02,2026-10-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 adultscore=0 impostorscore=0 bulkscore=0 lowpriorityscore=0 malwarescore=0 priorityscore=1501 phishscore=0 spamscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610230035 Context bank 9 (CB9) is reserved for secure use cases and must not be exposed as a FastRPC compute context bank for non-secure offloading. Several Qualcomm platform device trees currently define compute-cb@9 nodes, which allows non-secure clients to select a context bank that is intended for secure use. Remove these CB9 entries from all affected platforms to prevent unintended usage and align the device trees with the intended security model. This series removes the compute-cb@9 nodes from all affected Qualcomm platform DTSI files. Patch [v1]: https://lore.kernel.org/all/20261016052042.3755352-1-abhinav.parihar@oss.qualcomm.com/ Changes in v2: - Split the changes from a single patch into a per-platform patch series. - No functional changes. Abhinav Parihar (6): arm64: dts: qcom: lemans: Remove FastRPC compute CB9 entry arm64: dts: qcom: monaco: Remove FastRPC compute CB9 entry arm64: dts: qcom: sc8280xp: Remove FastRPC compute CB9 entry arm64: dts: qcom: sdm660: Remove FastRPC compute CB9 entry arm64: dts: qcom: sdm630: Remove FastRPC compute CB9 entry arm64: dts: qcom: msm8996: Remove FastRPC compute CB9 entry arch/arm64/boot/dts/qcom/lemans.dtsi | 16 ---------------- arch/arm64/boot/dts/qcom/monaco.dtsi | 7 ------- arch/arm64/boot/dts/qcom/msm8996.dtsi | 6 ------ arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 6 ------ arch/arm64/boot/dts/qcom/sdm630.dtsi | 5 ----- arch/arm64/boot/dts/qcom/sdm660.dtsi | 6 ------ 6 files changed, 46 deletions(-) -- 2.34.1