paging and protected memory

[ninjarider]

currently reading on protected memory and stuff. from what i've been reading so far, you can only have 1 page size.

my question:
what is the average size code, data, and stack sections in programs that will run on a computer.
think i've read somewere were you can mix 4mb and 4kb pages is this true.

[edit]
answered the mixing 4mb and 4kb. my question about it is how is it done.

[Tedd]

There's a 'page-size' bit in the page-directory entries - when it's clear the page size is 4kB, and 4MB when set.

(Intel System Programming Guide, Protected-Mode Memory Management chapter has all the details :wink)

[MichaelW]

And there is some related code here.