🚀 go-pugleaf

I am porting an ABIOS extension from OS/2 1.3 (where it works fine) to OS/2
2.0. The extension basically hooks into the disk ABIOS, learns the *PHYSICAL*
address of data being read/written from the ABIOS request block, does some-
thing with the data, then passes the data on. Fine under 1.3, but under 2.0
PAGING gets in my way. As I'm running at ring 0, I can do everything I want
if I know *where* to do it. Enter my problem: I have to get a virtual
address for the physical address, which means I'd like to look it
up in some internal data structure. (You would not want to scan all page
tables sequentially...)

In the kernel debugger, it just takes 4 commands to do that.

Question: How to do it while executing in ring 0 ? (Kernel data structures)
Question 2: Is there any docu about field acronyms which the kernel debugger
            prints quite generously ?
Question 3: As the page directory is at different physical and virtual
            addresses on different machines, is there something like a
            master master pointer, that is the key to all kernel data
            structures ?
            Funnily enough, the page directory itself is *not* referred
            to by a page table entry (as it is suggested in Intel's
            operating system writer's guide) ...

I'd appreciate help from any OS/2 2.0 gurus, especially from some IBM
guys.


o_O   Gregor 'Greg' Glawitsch
 J    Research Institute for Microprocessor Applications
 o    Johannes Kepler University Linz/AUSTRIA
      K390670@ALIJKU11.EDVZ.UNI-LINZ.AC.AT

"Everybody should believe in something, I believe I should have another beer!"