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smp: Consolidate smp_prepare_boot_cpu()

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There is no point in having seven architectures implementing the same empty
stub.

Provide a weak function in the init code and remove the stubs.

This also allows to utilize the function on UP which is required to
sanitize the per CPU handling on X86 UP.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20240304005104.567671691@linutronix.de
This commit is contained in:
Thomas Gleixner
2024-03-04 11:12:22 +01:00
committed by Ingo Molnar
parent 5323922f50
commit 712610725c
11 changed files with 15 additions and 42 deletions
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arch/hexagon/kernel/smp.c
-4
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@@ -114,10 +114,6 @@ void send_ipi(const struct cpumask *cpumask, enum ipi_message_type msg)
local_irq_restore(flags);
}
void __init smp_prepare_boot_cpu(void)
{
}
/*
* interrupts should already be disabled from the VM
* SP should already be correct; need to set THREADINFO_REG