On Mon, Apr 23, 2001 at 04:29:47PM -1000, Tony Denault wrote:
>
> I need ~2MB memory buffer to shared data between the rtl and linux
> process. I need the virtual address returned by mbuff to be the same to
> all task gaining access to my mbuff() memory. How can this be done?
This isn't really reasonable. Even among user-space tasks,
you are essentially at the mercy of the kernel to provide
you with it's best effort to map memory to a particular
location. Plus, you need to have a good idea of an area that
the kernel will allow you to use in every process.
Then you have the user-space/kernel-space problem. On x86,
everything user-space is < 0xc0000000, everything kernel is
>= 0xc0000000. So if you want an area that satisfies both
criteria, you are, um..., out of luck.
> If mbuff() can't, is there another way?
Not without massive kernel hackery.
dave...
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