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Thu, 15 Oct 2026 01:00:47 -0700 (PDT) X-Received: by 2002:ac8:59c6:0:b0:51c:2324:666 with SMTP id d75a77b69052e-5359fa50f67mr350336971cf.3.1792051247255; Thu, 15 Oct 2026 01:00:47 -0700 (PDT) Received: from [192.168.226.26] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c3eda044aabsm91788766b.57.2026.10.15.01.00.43 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 15 Oct 2026 01:00:46 -0700 (PDT) Message-ID: <2f296811-cdf7-4f87-84f6-3561cabfafed@oss.qualcomm.com> Date: Thu, 15 Oct 2026 10:00:42 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 1/4] arm64: dts: qcom: kodiak: Make the ADSP remote heap no-map To: Jianping Li , Bjorn Andersson , Konrad Dybcio Cc: Abel Vesa , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Ekansh Gupta , Vinayak Katoch , Alexey Klimov , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, quic_chennak@quicinc.com References: <20261015071511.977-1-jianping.li@oss.qualcomm.com> <20261015071511.977-2-jianping.li@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20261015071511.977-2-jianping.li@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: qbLq4kBLn6ZdoWyJQCOguFXw2X-qS67a X-Proofpoint-ORIG-GUID: qbLq4kBLn6ZdoWyJQCOguFXw2X-qS67a X-Proofpoint-Spam-Info: AW1haW4tMjYxMDE1MDAzMSBTYWx0ZWRfX4yzGNTO73vtA PxOc7Dfv7h9mdu3ny2+zdvA/84aZFrjiPatVtOu3femY5j2bHYOW0plxe4OS+4SvAa/K/yBQpo4 PEwue2qJ6OSc8ce+Q9W9Y+OjSlgn898= X-Authority-Analysis: v=2.4 cv=TbQDJhQh c=1 sm=1 tr=0 ts=6ad08831 cx=c_pps a=WeENfcodrlLV9YRTxbY/uA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=yc9GWqZudGba39dWNLEA:9 a=QEXdDO2ut3YA:10 a=kacYvNCVWA4VmyqE58fU:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDE1MDAzMSBTYWx0ZWRfX8KmkJdeJRV8R fYv3nDiqfAzgKZ+hTdccc+DBzvpCck+Pu0JUrlu++vjKJXBbUdOPX2RJ9eKSi2xd0HELVZFWds5 skC8ipB8MsYVgqH8cpYDhVXpwMBs4rr1kqk/XI6DHCvkfMMKKDpRjnbyJ1mo93Qb32TNXXwJpQ0 dZCd9vUvPzKcJBH4Pz0CSgjbNI18At8E/HUQEiac7TOI+duGFoEvWkJQ4paCv2Aq26YGwJBNTI0 Vew0wHfXRmbJ9cm7NXyhF/iXeFyE7VPbD+k/gNu5pCR0ThB4c5jZOgP6xSTTftUUCK2Mll6s7cb fuJtETAhw6tM20gKZWfwFONzX43N1TI288wqTHRVbwSk5RNTRjlKjyn2ynkzRvwhQE/C/ujKpf8 AojYL1P2KgTn/J3OX9iV8kQ28n3uvELHCicx27VuZupOASpccRM13iQZikOVUolnryBixRxINYz He5VzAeio8StqDlVPcg== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-13_01,2026-10-14_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 lowpriorityscore=0 bulkscore=0 priorityscore=1501 spamscore=0 clxscore=1015 impostorscore=0 phishscore=0 malwarescore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610150031 On 10/15/26 9:15 AM, Jianping Li wrote: > The ADSP remote heap is declared as a reusable CMA pool. FastRPC > assigns the entire region to the DSP through qcom_scm_assign_mem() > during probe without allocating the pages from CMA. Consequently, > the pages remain available for movable HLOS allocations even after > HLOS access to the region has been revoked. > > On Kodiak, a synchronous external abort was reported during storage > testing when the kernel accessed memory within the ADSP remote heap. > The faulting address was outside the HLOS stage-2 mapping. > > Replace reusable with no-map to prevent the region from being reused > for normal kernel allocations and exclude it from the kernel's > standard memory mapping. > > Fixes: 9d7d847ff1c50 ("arm64: dts: qcom: kodiak: avoid EFI overlap for ADSP remote heap") > Link: https://lore.kernel.org/all/20260423063502.484-1-jianping.li@oss.qualcomm.com/ > Signed-off-by: Jianping Li > --- Reviewed-by: Konrad Dybcio Konrad