x86/alternatives: Provide text_poke_copy_locked()

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The upcoming call thunk patching must hold text_mutex and needs access to
text_poke_copy(), which takes text_mutex.

Provide a _locked postfixed variant to expose the inner workings.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20220915111147.159977224@infradead.org

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Thomas Gleixner 2022-09-15 13:11:20 +02:00 • committed by Peter Zijlstra

parent 80e4c1cd42

commit fe54d07937

2 changed files with 23 additions and 15 deletions

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arch/x86/include/asm/text-patching.h

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37

arch/x86/kernel/alternative.c

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