On 20.03.2025 18:56, Andrew Cooper wrote: > On 18/03/2025 3:26 pm, Jan Beulich wrote: >> The sole dependency is percpu_init_areas(), >> which runs - as even visible from patch context here - ahead of >> early_traps_init(). > > percpu_init_areas() isn't even a dependency. Notice how it only starts > from CPU1. CPU0 (which is what this_cpu() refers to in both of these > functions) is correct (i.e. 0) at build time.
Oh, right. > I still intend to remove percpu_init_areas(). It's all build-time > constant; it just needs doing by the assembler, rather than the > compiler, as (-(long)__per_cpu_start) is not an integer constant expression. Except that this value also cannot be expressed by a relocation, afaict, so the assembler would choke when trying to write the object file. (Same for x86'es alternative initializer.) Jan
