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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-658b4691e53sm7513201a12.21.2026.02.02.02.52.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 02 Feb 2026 02:52:26 -0800 (PST) Message-ID: <5bd363cd-366e-45e7-b6a0-281e4c6bef97@oss.qualcomm.com> Date: Mon, 2 Feb 2026 11:52:22 +0100 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: Vikash Garodia , 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> <9c334393-211b-4b3e-b9b3-57700641933d@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <9c334393-211b-4b3e-b9b3-57700641933d@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-ORIG-GUID: VuWqBWr8glVfj2dOalqPzLv_8mC2v1s2 X-Proofpoint-GUID: VuWqBWr8glVfj2dOalqPzLv_8mC2v1s2 X-Authority-Analysis: v=2.4 cv=P4w3RyAu c=1 sm=1 tr=0 ts=698081ec cx=c_pps a=wEM5vcRIz55oU/E2lInRtA==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=HzLeVaNsDn8A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=XeJViENlyl3U9Cg1nawA:9 a=QEXdDO2ut3YA:10 a=OIgjcC2v60KrkQgK7BGD:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjAyMDA4NyBTYWx0ZWRfX4nXYjqKAkWzB kY16RFplGfypRb1C2paUtqwRpF+fuxX4rppqV/C7HKiL81Vx92ZwBIn3PJur2AkA5IPdaUg+RWP Q39Gnl6pKLAu4EP7LjuD8ae4jaSNfwXNYUIwBLK+YZO1LzwL7XWBWLp1OIkyfKX3N3p4VNntmyu yM0leVAAStpnpW2I3VQp6hw33Yclwq3pDBuPtxYgvj6t9HuTlF4ahREbpgWIQv+Rj4887ZFdue8 j8T7ZaMVQfjTSytXA/e1nGmXxwF6OaIrYZfYtI/BKzn+B7sxq2BTFMOzG2fZsPt9pYtrKq8Vm6o vl5w+lGxYuVEn4u1Sw46ORqcrq1dyIOxb75l11EcSj8t3f2Tn6hwuzd5gHTl687sUj+v0I7LNa6 m8XlOvVdCbw/saBQmWURP3465G6CzRV6Z2PBQF1JHgCOG4T5vhyxcMKs4guMhfQPE69agkEG/UI vHgvjw2MgIR++QgBdgg== 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 malwarescore=0 phishscore=0 lowpriorityscore=0 adultscore=0 priorityscore=1501 impostorscore=0 suspectscore=0 spamscore=0 clxscore=1015 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602020087 On 2/2/26 11:36 AM, Vikash Garodia wrote: > > 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. I see, thanks Konrad