[ros-dev] 2GB Boundary
eric.kohl at t-online.de
Sun Oct 10 11:52:16 CEST 2004
"Aliberti Emanuele" <ea at iol.it> wrote:
> >I agree! But I think we should move the ntoskrnl base address to
> >and map the first MB of physical memory to 0x80000000 - 0x800FFFFF in
> >to simplify BIOS calls.
> Does that conflict with the statement I read in some books about
> completely skipping the low 64k physical address range for ease of
> detecting NULL pointers?
This is not 100% correct. The lowest 64k of the process _virtual_ address
space is is reserved and protected in order to detect NULL pointer access.
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