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init: Provide arch_cpu_finalize_init()

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check_bugs() has become a dumping ground for all sorts of activities to
finalize the CPU initialization before running the rest of the init code.

Most are empty, a few do actual bug checks, some do alternative patching
and some cobble a CPU advertisement string together....

Aside of that the current implementation requires duplicated function
declaration and mostly empty header files for them.

Provide a new function arch_cpu_finalize_init(). Provide a generic
declaration if CONFIG_ARCH_HAS_CPU_FINALIZE_INIT is selected and a stub
inline otherwise.

This requires a temporary #ifdef in start_kernel() which will be removed
along with check_bugs() once the architectures are converted over.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20230613224544.957805717@linutronix.de
This commit is contained in:
Thomas Gleixner
2023-06-14 01:39:22 +02:00
parent f1fcbaa18b
commit 7725acaa4f
3 changed files with 13 additions and 0 deletions
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4
init/main.c
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@@ -1078,7 +1078,11 @@ asmlinkage __visible void __init __no_sanitize_address __noreturn start_kernel(v
taskstats_init_early();
delayacct_init();
arch_cpu_finalize_init();
/* Temporary conditional until everything has been converted */
#ifndef CONFIG_ARCH_HAS_CPU_FINALIZE_INIT
check_bugs();
#endif
acpi_subsystem_init();
arch_post_acpi_subsys_init();