Re: [RFC][PATCH] m68k/parisc: Convert hp_sdc_rtc driver to rtc framework

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Op ma 28 jan. 2019 om 21:32 schreef Michael Schmitz <schmitzmic@xxxxxxxxx>:
How much RAM does your HP have?

It has 64 MB, so no problems there.

Your NFS root file system is probably of a similar vintage to what I use
with only 14 MB. No trouble up to kernel version 4.20. 5.0-rc7 (??) also
boots OK, but some recent changes to the VM config appear to cause
frequent page allocation failure (the kernel attempts to keep a lot more
free pages in reserve than it used to do in 4.20). If you are low on
memory, I'd stick with 4.x for now.

I tried several kernels, 4.20, 5.0 and some late 2.6.3x version.

How far along in the boot do you get?

Not far. Screen goes blank, the leds stay at state 0x55 (set right
before calling start_kernel()).

But this gave me a feeling of deja-vu...
(https://marc.info/?l=linux-m68k&m=117175646524933 - it broke after
introducing discontinuous memory support).

Digging a bit deeper it turns out that the proposed patch from Roman
(https://marc.info/?l=linux-m68k&m=117184910524555&w=2) that fixed my
problem never made it into the tree.
Since then there have been more changes to
arch/m68k/kernel/mm/motorola.c so that patch probably needs some
changing (and testing on other platforms).

Kind regards,

Kars.



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