Arnd Bergmann kirjoitti 11.8.2023 klo 11.01:
PS: is there any way I can help with debugging the 1GB RAM issue? I
applied the mem limit to 768MB in uboot as a workaround but if I can
help in any way with debugging this issue I'm happy to.
I forgot what the problem was, but it sounds like the difference
between CONFIG_VMSPLIT_3G and CONFIG_VMSPLIT_3G_OPT in the kernel.
Ideally you'd want to use CONFIG_VMSPLIT_3G_OPT in a kernel for
a system with 1GB of contiguous RAM, but I don't know if the
problem here was caused by picking this or not picking this.
I tried that around
https://lists.debian.org/debian-arm/2018/06/msg00007.html (still there
at https://people.debian.org/~timo/qnap/) and had 1GB in use but some
other problems with my build.
I have continued to run with 768MB which is enough for my use cases, and
with the Debian 11 (after the flash partition restructuring script and
dist-ugprade) the system has been rock solid.
Now of course I would be curious whether anyone has tried upgrading any
Kirkwood devices to Debian 12, but bullseye has luckily plenty of
support remaining.
-Timo
