Re: Sharing memory between kernel and user space

[H. Peter Anvin]

Followup to:  <14CFC56C96D8554AA0B8969DB825FEA0012B331A@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
By author:    "Brian D. McGrew" <brian@xxxxxxxxxxxxx>
In newsgroup: linux.dev.kernel
>
> I have a question about the best way to share memory between user and
> kernel space.
> 

In general, allocate the memory in kernel space (via get_free_page et
al), and make accessible to userspace via mmap on a device node.

	-hpa
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