Confusing in Address

[cheng chen]

Me too. good question.
Which header may define these addresses?

On Sat, Feb 11, 2012 at 10:52 AM, hz hanks <hankshz at gmail.com> wrote:

> Hi, all
>
> I'm confused with different addresses in Linux, such as virtual
> address and hardware address. For example, which kind of address one
> can get when using "&num" in application layer programming? How about
> that in kernel, such as in device driver? Which kind of address one
> can get when using "void _ _user *to" in device driver? And which kind
> of address the kernel is working with when using "mmap"? And which
> kind of address we are talking about when divide the memory into user
> space and kernel space?
>
> It's quite tedious but thank you so much for helping me!
>
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