Hi Michael,
On Tue, Apr 1, 2014 at 1:52 AM, Michael Schmitz
<schmitz@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
Michael Schmitz <schmitzmic@xxxxxxxxx> writes:
do we know the size of the first memory chunk early enough in head.S?
Maybe it's time to increase INIT_MAPPED_SIZE at least in cases where
we know that there's more than 4 MB in the first memchunk ...
How do you know? You would have to reimplement the check paging_init
does.
I see - as a heuristic, we can probably assume that the first memchunk is
the relevant one, and especially in the case of FastRAM, also the larger
one.
Does this hold for Amiga/Mac/VME as well?
People want to run the kernel in the fastest memory chunk, which is typically
also the largest (slow Amiga mainboard memory may be 2 - 16 MiB for
Linux-capable machines, accelerator memory may be larger).
Don't know about Mac, but I have some memories of interleaved banks
and such...
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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