RE: Memory sharing issue by application on V4L2 based device driver

Sorry for late reply.

Samsung SoC C210 has many multimedia IPs.
Each IP has its own MMU named SYSTEM MMU like CPU's MMU.
So it can handle discontiguous memory using device own virtual address.

What Inki Dae wants to discuss is how to allocate the memory and how to
share it with other multimedia IPs. 

Thank you for interesting.

Best regards,

-----Original Message-----
From: linux-fbdev-owner@vger.kernel.org [mailto:linux-fbdev-
owner@vger.kernel.org] On Behalf Of Konrad Rzeszutek Wilk
Sent: Wednesday, January 12, 2011 2:35 AM
To: Jonghun Han
Cc: 'InKi Dae'; linux-media@vger.kernel.org;

linux-arm-kernel@lists.infradead.org;

'linux-fbdev'; kyungmin.park@samsung.com
Subject: Re: Memory sharing issue by application on V4L2 based device

driver

with system mmu.


 .. snip..

quoted

But 64KB or 1MB physically contiguous memory is better than 4KB page
in the point of performance.

Could you explain that in more details please? I presume you are talking

about a

CPU that has a MMU unit, right?
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