Re: [PATCH v4 4/5] media: qcom: iris: increase H265D_MAX_SLICE to fix H.265 decoding on SC7280

[Vikash Garodia]

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 <dmitry.baryshkov@xxxxxxxxxxxxxxxx>
> > ---
>
> Since it's matching venus:
>
> Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
>
> 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