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

From
Pavel Machek <hidden>
Date
2023-11-13 11:38:35
Also in
dri-devel, linux-devicetree, linux-media, linux-mediatek, lkml
Reply to
Yong Wu, 2023-11-11
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.
Thread (26 messages) 26 messages, 8 authors, last reply 2023-11-22
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