Hi Michael,
On Wed, Jun 29, 2022 at 9:27 AM Michael Schmitz <schmitzmic@xxxxxxxxx> wrote:
> Most users will opt for loading the kernel to a RAM chunk at a higher
> physical address, making the lower chunk unusable (except as chip RAM),
> meaning allocating a bounce buffer within the first 16 MB will most
> likely fail anyway AIUI (but Geert would know that for sure).
Exactly. On Zorro III-capable machines, Zorro II RAM is not mapped
for general use, but can be used by the z2ram block device.
Note that you can use it as a bounce buffer, by looking for and marking
free chunks in the zorro_unused_z2ram bitmap.
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
