x86/cpu/topology: Remove limit of CPUs due to disabled IO/APIC

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The rework of possible CPUs management erroneously disabled SMP when the
IO/APIC is disabled either by the 'noapic' command line parameter or during
IO/APIC setup. SMP is possible without IO/APIC.

Remove the ioapic_is_disabled conditions from the relevant possible CPU
management code paths to restore the orgininal behaviour.

Fixes: 7c0edad364 ("x86/cpu/topology: Rework possible CPU management")
Signed-off-by: Fernando Fernandez Mancera <ffmancera@riseup.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/all/20241202145905.1482-1-ffmancera@riseup.net

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Fernando Fernandez Mancera 2024-12-02 14:58:45 +00:00 • committed by Thomas Gleixner

parent d0ceea662d

commit 73da582a47

1 changed files with 3 additions and 3 deletions

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arch/x86/kernel/cpu/topology.c

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