Hi Michael,
On Tue, Nov 17, 2015 at 5:42 AM, Michael Schmitz <schmitzmic@xxxxxxxxx> wrote:
Am 16.11.2015 um 00:04 schrieb Geert Uytterhoeven:
If max_pfn is not initialized, the various /proc/kpage* files are empty,
and selftests/vm/mlock2-tests will fail. max_pfn is also used by the
block layer to calculate DMA masks.
What about platforms where the DMA can't address all available physical
memory?
There are many other checks, using max_low_pfn and/or zone_dma.
I'm not 100% clear on the impact of max_pfn in blk_settings_init().
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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