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Thu, 15 Oct 2026 01:00:52 -0700 (PDT) X-Received: by 2002:a05:620a:458f:b0:93c:61e0:81ff with SMTP id af79cd13be357-93ebd0a3722mr3603715685a.1.1792051251455; Thu, 15 Oct 2026 01:00:51 -0700 (PDT) Received: from [192.168.226.26] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c3eda044aabsm91788766b.57.2026.10.15.01.00.48 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 15 Oct 2026 01:00:49 -0700 (PDT) Message-ID: <6610c1a0-05fa-49e6-8c17-8846afd312fc@oss.qualcomm.com> Date: Thu, 15 Oct 2026 10:00:48 +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 2/4] arm64: dts: qcom: glymur: 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> <20261015071511.977-3-jianping.li@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20261015071511.977-3-jianping.li@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDE1MDAzMSBTYWx0ZWRfX4KbuMANCnT8z cukGkrQZNvTRitHq7mEXQznwCccUx/RRdxoJ54U/kWiRylDPjbH3aURvPm9eoasdTWNwmgCYTn+ nKk1cXoCKsHZMBYJpY36POyNTayJDREDhAJOxkpvVBnB6vDJVAYsn8+ttiTBZAk9dxycHdLQRbd A4/qawNpiCwcZ5yu6nNJIv5wnRMrzekEzt82Pj7/BLlWFTOZsX1pdgzPLPN+zI8LSedZXhCu1Qx xrbjsMUfRF7ZvJYds7WPmE0+psr6I9IJWV1LxuWU3KTmym8HAQ2WBBKkhMH5BltRg+Die/k7iie TT5UooR3HiFGHIzAO8stuWdSjjqHyEAMv0F5gTfIZ/gn0FzIf96aWrnxjIXaM5++Sh4inpxoaFa UHjxZIh8QuwEl1LKFVB42HKU0Km/YKfgDV3649i8n5M8B2vsu/j+IUm0OEusAdls/xai0gd5hHS UgT1/8KdtSXKYRrovZw== X-Proofpoint-GUID: amh9Kr4gzz_QSb1qIY7Ymyml8mi-SL21 X-Proofpoint-Spam-Info: AW1haW4tMjYxMDE1MDAzMSBTYWx0ZWRfX3HpbNFpu+2jM t3qxEee7vRmzYiaK4GrrOg431cNhsfYDFNiCO75b62RyqrfaYSMP9Ys6eYrP9PxWDQ4a9rnXQxj 03EigUX7VFdYDjT1jWyMq54qpWnadz0= X-Proofpoint-ORIG-GUID: amh9Kr4gzz_QSb1qIY7Ymyml8mi-SL21 X-Authority-Analysis: v=2.4 cv=V/noQuni c=1 sm=1 tr=0 ts=6ad08835 cx=c_pps a=50t2pK5VMbmlHzFWWp8p/g==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=CjiZw0He1JKpzbGRn1AA:9 a=QEXdDO2ut3YA:10 a=zZCYzV9kfG8A:10 a=IoWCM6iH3mJn3m4BftBB:22 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 priorityscore=1501 malwarescore=0 lowpriorityscore=0 impostorscore=0 bulkscore=0 adultscore=0 clxscore=1015 phishscore=0 spamscore=0 suspectscore=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 shared DMA pool. > Allowing the kernel to reuse this region is incompatible with handing > the entire region over to the DSP, as HLOS allocations may then access > memory for which HLOS no longer has access permissions. > > The same configuration has caused synchronous external aborts on > other platforms when the kernel accesses pages within the ADSP remote > heap. > > Replace reusable with no-map to keep the region reserved for the DSP > and exclude it from the kernel's standard memory mapping. > > Fixes: 67641246eabd0 ("arm64: dts: qcom: glymur: Add memory-region for audio PD") > Link: https://lore.kernel.org/all/20260701-glymur-audio-v1-1-2c3862d95a09@oss.qualcomm.com/ > Signed-off-by: Jianping Li > --- Reviewed-by: Konrad Dybcio Konrad