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x86/alternatives: Assert input parameters in smp_text_poke_batch_process()

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At this point the 'tp' input parameter must always be the
global 'tp_vec' array, and 'nr_entries' must always be equal
to 'tp_vec_nr'.

Assert these conditions - which will allow the removal of
a layer of indirection between these values.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Juergen Gross <jgross@suse.com>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/20250411054105.2341982-27-mingo@kernel.org
This commit is contained in:
Ingo Molnar 2025-04-11 07:40:38 +02:00
parent 476ad071c6
commit 37725b64a9
1 changed files with 3 additions and 0 deletions
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arch/x86/kernel/alternative.c
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@ -2627,6 +2627,9 @@ static void smp_text_poke_batch_process(struct smp_text_poke_loc *tp, unsigned i
lockdep_assert_held(&text_mutex);
WARN_ON_ONCE(tp != tp_vec);
WARN_ON_ONCE(nr_entries != tp_vec_nr);
int3_vec.vec = tp;
int3_vec.nr_entries = nr_entries;