few queries about user/kernel vitual addresses

Dear All,

I have few queries about user/kernel vitual addresses.


In my kernel module i recieve a virtual address, how can i find is this
address is
user virtual address or kernel virtual address in kernel space.


If this is kernel virtual address, how can i get its physical address.


__pa() returns the physical address for kernel logical address (low
memory) but not
for kernel virtual address(high memory).


Please help me.


Regards,
Neeraj

[email]kushneeraj@gmail.com[/email] wrote:[color=blue]
> Dear All,
>
> I have few queries about user/kernel vitual addresses.
>
>
> In my kernel module i recieve a virtual address, how can i find is this
> address is
> user virtual address or kernel virtual address in kernel space.
>
>
> If this is kernel virtual address, how can i get its physical address.
>
>
> __pa() returns the physical address for kernel logical address (low
> memory) but not
> for kernel virtual address(high memory).[/color]

Someone posing as you has just posted exactly the same question, but
with a different subject. Perhaps you contact him and you sort out the
answer together.

--
Josef Möllers (Pinguinpfleger bei FSC)
If failure had no penalty success would not be a prize
-- T. Pratchett