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Date: Sat, 4 Dec 2004 18:47:45 -0600
From: Tommy Reynolds <Tommy.Reynolds@MegaCoder.com>
To: linux-kernel@vger.kernel.org
Subject: Re: global memory access
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Uttered Lan Xue <lanxue@soe.ucsc.edu>, spake thus:

> I was wondering how a user-level program can share a writable memory
> buffer with the kernel. The memory can either belongs to the kernel space
> or the user space, but both kernel module and user program should be able
> to access(read, write) it.

$ man 2 mmap

Cheers!