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Wed, 14 Oct 2026 02:07:52 -0700 (PDT) X-Received: by 2002:a05:620a:2b4e:b0:93e:6d87:4f69 with SMTP id af79cd13be357-93ebd1e4d57mr2654562585a.3.1791968872201; Wed, 14 Oct 2026 02:07:52 -0700 (PDT) Received: from [192.168.226.26] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c31a9a3bbe2sm680030466b.27.2026.10.14.02.07.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 14 Oct 2026 02:07:51 -0700 (PDT) Message-ID: Date: Wed, 14 Oct 2026 11:07:49 +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] arm64: dts: qcom: talos: Make the ADSP remote heap no-map To: Jianping Li , Bjorn Andersson , Konrad Dybcio Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, ekansh.gupta@oss.qualcomm.com, quic_chennak@quicinc.com References: <20261014083820.468-1-jianping.li@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20261014083820.468-1-jianping.li@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: Ekwlvjev_BR0QRZeZ9GVlgTeLqIMCCyV X-Proofpoint-GUID: Ekwlvjev_BR0QRZeZ9GVlgTeLqIMCCyV X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDE0MDAzNiBTYWx0ZWRfX/twyfa0HOQyW m1QapYgkntooMVYC/LdSbvv0ItpbCOkNtuF0DajaBjkFTRRjdt0yNuukU+4nz4uO/R8wM8E0jNL E4draJmmDVyzn4mlve8y/pflbax7/jnjq3IsRPd6k1ZD/0cidonm82BYIhpnppb7cCbnKVnpNtv 2We9urKQy1v/Nxsy1dW66RkgXSK2KGcTBNE7Bf0Ldqs0nIF9Mi0PNiB+L59SNCkTIGd0vCv0YoC EEsVlnwXDXIGdnzQlcHdk3x6ur1rO+ZKMJA6c/8DEzlKYqcxTlIV7mP0T+v5gN9jixUGksKlab/ GGcL1qMfaynWGVS523NxG6Ksy06+Hw/pRWBIC8WkrDU0vL+38va/1GywEPt76zRzRPuK+DbZKTQ thOvbvwxDL8jNk5yHilxC8ggDWbsZmIMIEDf2JrN0JvoOSDjCtNEZzoeLJOHKaFF4oh5/1Heu8Y GatAyfo605LgRZavbjg== X-Proofpoint-Spam-Info: AW1haW4tMjYxMDE0MDAzNiBTYWx0ZWRfX/lUCOPZ3+yF+ WqBhu6LeEbDNBz0ZKvs6eoxXPvrA8eXuFpICrqJkE3CBDDyhBvEjiG+0/m56wJnmlrKGz8by1kV WnUbt/qBCxsYmGAJtTERcI9A1rvytzk= X-Authority-Analysis: v=2.4 cv=U7AHnuru c=1 sm=1 tr=0 ts=6acf466a cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==: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=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=xGTFGipD0v4Ncps-x_sA:9 a=QEXdDO2ut3YA:10 a=zZCYzV9kfG8A:10 a=PEH46H7Ffwr30OY-TuGO: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_01,2026-10-09_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 malwarescore=0 lowpriorityscore=0 adultscore=0 impostorscore=0 bulkscore=0 phishscore=0 suspectscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610080000 definitions=main-2610140036 On 10/14/26 10:38 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 Talos, GPU stress testing triggers a synchronous external abort > when zram accesses pages within the ADSP remote heap. > > 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: b0b51a5f1911f ("arm64: dts: qcom: talos: Add memory-region for audio PD") > Link: https://lore.kernel.org/all/20260424-talosaudio-v3-1-9e2ad5d78a2e@oss.qualcomm.com/ > Signed-off-by: Jianping Li > --- Reviewed-by: Konrad Dybcio Konrad