Re: [PATCH v2 0/8] dma-buf: heaps: Add secure heap

Pavel Machek
2023-11-13T11:38:42Z

[-- Attachment #1: Type: text/plain, Size: 856 bytes --]

Hi!

> This patchset adds three secure heaps:
> 1) secure_mtk_cm: secure chunk memory for MediaTek SVP (Secure Video Path).
> The buffer is reserved for the secure world after bootup and it is used
> for vcodec's ES/working buffer;
> 2) secure_mtk_cma: secure CMA memory for MediaTek SVP. This buffer is
> dynamically reserved for the secure world and will be got when we start
> playing secure videos, Once the security video playing is complete, the
> CMA will be released. This heap is used for the vcodec's frame buffer.
> 3) secure_cma: Use the kerne CMA ops as the allocation ops.
> currently it is a draft version for Vijay and Jaskaran.

Is there high-level description of what the security goals here are,
somewhere?

BR,
Pavel
--
People of Russia, stop Putin before his war on Ukraine escalates.

[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 195 bytes --]