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