x86/ibt: Optimize the fineibt-bhi arity 1 case

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Saves a CALL to an out-of-line thunk for the common case of 1
argument.

Suggested-by: Scott Constable <scott.d.constable@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Kees Cook <kees@kernel.org>
Link: https://lore.kernel.org/r/20250224124200.927885784@infradead.org

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Peter Zijlstra 2025-02-24 13:37:13 +01:00 • committed by Ingo Molnar

parent 0c92385dc0

commit dfebe7362f

2 changed files with 54 additions and 9 deletions

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4

arch/x86/include/asm/ibt.h

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59

arch/x86/kernel/alternative.c

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