> On 6 Jul 2024, at 17:17, John Paul Adrian Glaubitz > <glaub...@physik.fu-berlin.de> wrote: > > Hi Reimar, > >> On Jul 6, 2024, at 5:09 PM, Reimar Döffinger <reimar.doeffin...@gmx.de> >> wrote: >> >> Hi! >> The newest 6.9 powerpc kernel build seems to be incompatible with >> OpenFirmware boot, >> so boot fails on my PowerPC macMini. >> The error message is >> "Error: You can't boot a kdump kernel from OF!" >> The error message seems not entirely accurate, it seems the issue is that >> CONFIG_PHYSICAL_START >> is no longer 0, which probably comes from >> CONFIG_CRASH_DUMP=y >> being set. >> Can this be reverted? > > Could you verify that this change actually fixes the problem? This would save > me some work.
I checked the kernel source, the error message is under a if (PHYSICAL_START > 0), so that I am quite certain is the issue. Actually testing means compiling the kernel, which will take quite some while. > Also, we need to figure out whether this change was made upstream or in > Debian. The error check etc is not new. I did also diff the config of the working 6.7 kernel and the non-working 6.9 kernel. Whether upstream changed the option defaults I do not know, but Debian definitely decides on the config options used in the end. But it seems most likely that CONFIG_CRASH_DUMP was enabled in Debian. Best regards, Reimar
