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x86/nmi: Remove an unnecessary IS_ENABLED(CONFIG_SMP)

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IS_ENABLED(CONFIG_SMP) is unnecessary here: smp_processor_id() should
always return zero on UP, and arch_cpu_is_offline() reduces to
!(cpu == 0), so this is a statically false condition on UP.

Suggested-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Signed-off-by: Xin Li (Intel) <xin@zytor.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20240201094604.3918141-1-xin@zytor.com
This commit is contained in:
Xin Li (Intel)
2024-02-01 01:46:04 -08:00
committed by Thomas Gleixner
parent e37ae6433a
commit 47403a4b49
1 changed files with 1 additions and 1 deletions
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arch/x86/kernel/nmi.c
+1 -1
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@@ -502,7 +502,7 @@ DEFINE_IDTENTRY_RAW(exc_nmi)
if (IS_ENABLED(CONFIG_NMI_CHECK_CPU))
raw_atomic_long_inc(&nsp->idt_calls);
if (IS_ENABLED(CONFIG_SMP) && arch_cpu_is_offline(smp_processor_id())) {
if (arch_cpu_is_offline(smp_processor_id())) {
if (microcode_nmi_handler_enabled())
microcode_offline_nmi_handler();
return;