Re: Linux kernel MM question

[Rik van Riel <riel@conectiva.com.br>]

On Mon, 12 Feb 2001, hai huang wrote:

> Is there an inverse page table implemented in Linux?

no

> If not, how does a physical page maps to a virtual page?

the system only has virtual -> physical mappings

> I'm asking this question because I'm looking for a way to
> declare a range of physical memory as void by relocate
> everything in this range of memory to either another location in
> memory or to the disk, so I need to find a way to map physical
> page to virtual page to update this change.

Impossible. Suppose there is kernel memory in the range
of kernel memory you want to free, and there are pointers
in other places of the kernel that point to these areas...

regards,

Rik
--
Virtual memory is like a game you can't win;
However, without VM there's truly nothing to lose...

		http://www.surriel.com/
http://www.conectiva.com/	http://distro.conectiva.com.br/

-
Kernelnewbies: Help each other learn about the Linux kernel.
Archive:       http://mail.nl.linux.org/
IRC Channel:   irc.openprojects.net / #kernelnewbies
Web Page:      http://www.surriel.com/kernelnewbies.shtml