[Geekos-devel] Virtual Memory and ISA_HOLE

[Patrick S. C. <so...@wa...>]

Hi Dave,
   
   Its me bugging you again. I have this "stupid" doubt about the pages
reserved for the HardWare and how they interact with the pagin scheme. I
understand that the upper 256 pages that correspond to the area reserved 
for the kernel must be "copied" to every other page directory. Now, my
doubt is whether or not to copy/map the pages reserved for the ISA_HOLE. I
believe that they must be mapped in the kernel master page directory, but
I'm not sure if they must be mapped in the User Page Directory as well. I
read one manual on the i386 but I could not find anything related to that.

   If you know any document which might contain this type of info, or if
you know the answer please tell me :)

Regards,
Patrick Sodre