"Seems to." That will probably be ACPI's epitaph. From the ACPI spec
(1.0b):
9.3.2 Bios Initialization of Memory
....
ACPI Reclaim Memory. Memory identified by the BIOS that contains the
ACPI tables. This memory can be any place above 1 MB and contains the ACPI
tables. When the OS is finished using the ACPI tables, it is free to reclaim
this memory for system software use (application space).
...
1MB - 8MB: Contiguous RAM. An area of contiguous physical memory
addresses. The OS requires this memory to be contiguous in order for its
loader to load the OS properly on boot up. (No memory-mapped I/O devices
should be mapped into this area.)
...
Believe which ever paragraph in that section you like. I believe I'm going
to complain to the committee.
Nathan
> From: Linus Torvalds [mailto:torvalds@transmeta.com]
>
> On Thu, 2 Mar 2000, Lyle Coder wrote:
> >
> > Yes, according to the spec, the MP tables can be ANYWHERE
> in RAM, even where
> > the loader loads the OS. But since in practice no one ever
> makes an OS
> > relocatable, there is an understanding that between 1MB to 16MB (if
> > available) will not be touched by the BIOS. This is
> actually because
> > Windows loads at 1MB too.
>
> There's more than an understanding: the ACPI spec seems to
> require that
> the area between 1-8MB is holy and must be contiguous RAM.
>
> Linus
>
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