x86/nmi: Improve and relocate NMI handler comments

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Some of the comments in the default NMI handling code are out of place
or inadequate. Move them to the appropriate locations and update them as
needed.

Move the comment related to CPU-specific NMIs closer to the actual code.
Also, add more details about how back-to-back NMIs are detected since
that isn't immediately obvious.

Opportunistically, replace an #ifdef section in the vicinity with an
IS_ENABLED() check to make the code easier to read.

Signed-off-by: Sohil Mehta <sohil.mehta@intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Kai Huang <kai.huang@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Link: https://lore.kernel.org/r/20250327234629.3953536-7-sohil.mehta@intel.com

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Sohil Mehta 2025-03-27 23:46:26 +00:00 • committed by Ingo Molnar

parent b4bc3144c1

commit 59cddd397a

1 changed files with 21 additions and 14 deletions

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arch/x86/kernel/nmi.c

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