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Wed, 22 Apr 2026 00:37:41 -0700 (PDT) X-Received: by 2002:a05:6a20:2590:b0:3a0:bc61:62e5 with SMTP id adf61e73a8af0-3a0bc6165damr16766815637.44.1776843461143; Wed, 22 Apr 2026 00:37:41 -0700 (PDT) Received: from [10.206.101.19] ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c79770512afsm12391799a12.31.2026.04.22.00.37.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 22 Apr 2026 00:37:40 -0700 (PDT) Message-ID: <88b38699-aa1a-42b9-8d2e-6139c1ced4fb@oss.qualcomm.com> Date: Wed, 22 Apr 2026 13:07:10 +0530 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 06/11] media: iris: Fix VM count passed to firmware To: Vishnu Reddy , Bryan O'Donoghue , Dikshita Agarwal , Abhinav Kumar , Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Joerg Roedel , Will Deacon , Robin Murphy , Bjorn Andersson , Konrad Dybcio , Stefan Schmidt , Hans Verkuil Cc: linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux.dev, stable@vger.kernel.org References: <20260414-glymur-v1-0-7d3d1cf57b16@oss.qualcomm.com> <20260414-glymur-v1-6-7d3d1cf57b16@oss.qualcomm.com> Content-Language: en-US From: Vikash Garodia In-Reply-To: <20260414-glymur-v1-6-7d3d1cf57b16@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: VuBKeRXFUVvAVnTPb5CLgLXCi3Nz3A98 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDIyMDA3MSBTYWx0ZWRfXz0gI2GpxI8i7 5gypvRbLaQ8ozkENMi3AfXimE7rsIVN7klll0byi7LGOmhXzaBQu/+NEar5di46u1LuqGYrOMid t4eIi8FrlUBhNv9FcVpDE6myLsZf1p8af4AFzrsM5g1G1EI5E5gGFyMak0nBhSinP03kDRAFwZG OgN1urbiTeZXZfhlQzEs1WFMs2ZjsK0pEGszkPeM43INACUMrclfSRJO8ciwBNkhXzc5UbLVpDw JEj82bfsy0cXEqkrrftBKHaP92S4OWgLe+Og5ZOM9njQWgICxOtssQjSQ8uhl/4v8HQMz8tTZOS bIyD76wao1fQIL8uFVj0NngCGVBk9utuBkSMkzS7/hTZBOL99zGGAj/i8idl3Xzza/fR/jWigGa c/Fqnu2/+JcJxvtwz69bIrj9u8jCut8b1OYvv7nWNPSPVU4Hvdi68cIXxJcH+envcDMJu1PQGJ1 AVql0i8n+09zltuut2g== X-Authority-Analysis: v=2.4 cv=WKJPmHsR c=1 sm=1 tr=0 ts=69e87ac6 cx=c_pps a=0uOsjrqzRL749jD1oC5vDA==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=IkcTkHD0fZMA:10 a=A5OVakUREuEA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=gowsoOTTUOVcmtlkKump:22 a=VwQbUJbxAAAA:8 a=EUspDBNiAAAA:8 a=UlvO0n_oXqfwqGaIblEA:9 a=QEXdDO2ut3YA:10 a=mQ_c8vxmzFEMiUWkPHU9:22 X-Proofpoint-GUID: VuBKeRXFUVvAVnTPb5CLgLXCi3Nz3A98 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-21_03,2026-04-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 suspectscore=0 spamscore=0 lowpriorityscore=0 impostorscore=0 bulkscore=0 phishscore=0 priorityscore=1501 malwarescore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000 definitions=main-2604220071 On 4/14/2026 10:30 AM, Vishnu Reddy wrote: > On Glymur, firmware interprets the value written to CPU_CS_SCIACMDARG3 as > the number of virtual machines (VMs) and internally adds 1 to it. Writing > 1 causes firmware to treat it as 2 VMs. Since only one VM is required, > remove this write to leave the register at its reset value of 0. This does > not affect other platforms as only Glymur firmware uses this register, > earlier platform firmwares ignore it. > > Fixes: abf5bac63f68a ("media: iris: implement the boot sequence of the firmware") > Cc:stable@vger.kernel.org > Signed-off-by: Vishnu Reddy > --- Reviewed-by: Vikash Garodia