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Mon, 02 Feb 2026 02:36:36 -0800 (PST) X-Received: by 2002:a05:6a00:2296:b0:81f:394a:4897 with SMTP id d2e1a72fcca58-823ab75f2dcmr12860326b3a.44.1770028595874; Mon, 02 Feb 2026 02:36:35 -0800 (PST) Received: from [10.204.100.98] ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-82379c241afsm17930181b3a.56.2026.02.02.02.36.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 02 Feb 2026 02:36:35 -0800 (PST) Message-ID: <9c334393-211b-4b3e-b9b3-57700641933d@oss.qualcomm.com> Date: Mon, 2 Feb 2026 16:06:28 +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 v4 4/5] media: qcom: iris: increase H265D_MAX_SLICE to fix H.265 decoding on SC7280 To: Konrad Dybcio , Dmitry Baryshkov , Dikshita Agarwal , Abhinav Kumar , Bryan O'Donoghue , Mauro Carvalho Chehab , cros-qcom-dts-watchers@chromium.org, Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Stanimir Varbanov Cc: linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org References: <20260131-venus-iris-flip-switch-v4-0-e10b886771e1@oss.qualcomm.com> <20260131-venus-iris-flip-switch-v4-4-e10b886771e1@oss.qualcomm.com> <70517c7f-92c2-4b2d-ada9-9cf0fe9371a4@oss.qualcomm.com> Content-Language: en-US From: Vikash Garodia In-Reply-To: <70517c7f-92c2-4b2d-ada9-9cf0fe9371a4@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjAyMDA4NyBTYWx0ZWRfX+gzD2UhxLwXf TbIkVmwiQUWPIeDdip8xpc6LIvNkPcn6mNoSdYn7eW/sTnuiP+cjIC0AQ98FZ+z1hKacQbTCwwm FPJ7lSK5IGEVS/a2oFUd3X/7N1Se6rJjUz7S+k6wbW3xGaCVgpPnlFXwDidBACofusnNbxCfXOq sK289Db2dTqQLgSGnuE558As8XCEy1/uSXW246YAqccdZA3WkzAuNaYJBVx7DLeuBg1+2ASRuvI 7bbYwjn1vOaEGN48OVjKpk1ryslvwsAyrtrDVvLZuj8BIS8gNIlFlkZlz8ZxJHPeI2KYgNBf6yJ Bxa9kvfk5ecV7gLaxBKl3iB6w+GuApk1v7iTse34TaLs9gCRTXRRbbnefD6rqn1PGFVg3sSPWRQ hFY8FipQLiCqnooUhWylMvPs3fRIHmTsHaGsoV9vYxts+mx1vjDTYJdmmHdcA0c78n3XTUKRnNg Xvd86aIwnnKiEFapoCA== X-Proofpoint-GUID: TIyWwLtcN_KRpe_xoKJE8GH89JZScxJg X-Authority-Analysis: v=2.4 cv=NOfYOk6g c=1 sm=1 tr=0 ts=69807e35 cx=c_pps a=mDZGXZTwRPZaeRUbqKGCBw==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=IkcTkHD0fZMA:10 a=HzLeVaNsDn8A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=3nfNMFReYfEziauJNS0A:9 a=QEXdDO2ut3YA:10 a=zc0IvFSfCIW2DFIPzwfm:22 X-Proofpoint-ORIG-GUID: TIyWwLtcN_KRpe_xoKJE8GH89JZScxJg X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-02_03,2026-01-30_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 bulkscore=0 priorityscore=1501 suspectscore=0 impostorscore=0 adultscore=0 lowpriorityscore=0 clxscore=1015 malwarescore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602020087 On 2/2/2026 3:53 PM, Konrad Dybcio wrote: > On 1/31/26 2:58 PM, Dmitry Baryshkov wrote: >> Follow the commit bfe1326573ff ("venus: Fix for H265 decoding failure.") >> and increase H265D_MAX_SLICE following firmware requirements on that >> platform. Otherwise decoding of the H.265 streams fails withthe >> "insufficient scratch_1 buffer size" from the firmware. >> >> Signed-off-by: Dmitry Baryshkov >> --- > > Since it's matching venus: > > Reviewed-by: Konrad Dybcio > > As a side question, is there anything wrong if we allocate a buffer that's > bigger (or say, vastly bigger) than what the fw expects? > > Like, if we allocated 10 GiB for $reasons, would the fw just happily > take it? Yes they would, as long as its bigger, they are happy. We are already struggling to get the usecase (concurrent ones) within 4 GiB, and with vastly bigger internal buffers, we would even worsen the available iova. Regards, Vikash