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From: Andrew Lunn <andrew@lunn.ch>
Subject: Re: [net-next, RFC, 4/8] net: core: add recycle capabilities on skbs
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Date: Sat, 8 Dec 2018 18:07:29 +0100
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> I got other concerns on the patchset though. Like how much memory is
> it 'ok' to keep mapped keeping in mind we are using the streaming
> DMA API. Are we going to affect anyone else negatively by doing so ?

For mvneta, you can expect the target to have between 512Mbyte to
3G. You can take a look at the DT files to get a better feel for this.
All of it should be low enough that it is DMA'able.

These SoCs are often used for WiFi access points, and NAS boxes.  So i
guess the big memory usage on these boxes is the block cache for a NAS
device. So if you want to see the impact of the driver using more
memory, see if disk performance is affected.

	Andrew