Re: Infrastructure for zerocopy I/O

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On Tue, Nov 17, 2015 at 02:13:49PM -0500, Alan Stern wrote:
> But what other way of allocating memory is there?

For my part, GPU memory versus malloc(). (You can ask OpenGL to permanently
map up a chunk of GPU memory for you into userspace, but you have no
guarantees as of if it's DMA-able. But typical memory from malloc() might.)

It might be overengineering things, though. I'd be fairly happy if I only had
zerocopy in most common situations. (Does xHCI have this 32-bit limitation?)

/* Steinar */
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