On Tue, Jan 24, 2023 at 02:48:39PM +0000, Sudeep Holla wrote: > > Ah, that thread, I remember that :). > > I still need to understand how this is related to memory allocation. > Pierre was suggesting(in private) if we need to keep fetch_cache_info() > arch specific but I really don't want to go down that patch until I > understand and there is no other option. > > Thanks for your time. I will try to recall boot flow and see if I can > gather the reasoning for the seen behaviour. > OK, I must have atleast taken a look at the code before I replied. smp_prepare_boot_cpu() is called quite early before page_alloc_init() and mm_init()(in init_main.c) while smp_prepare_cpus() get called quite late from kernel_init->kernel_init_freeable(). Geert, can you please try with the patch Conor pointed out and see if that helps to fix the allocation failures[1] -- Regards, Sudeep [1] https://lore.kernel.org/all/20230103035316.3841303-1-leyfoon.tan@xxxxxxxxxxxxxxxx/
