diff options
| author | Ingo Molnar <mingo@kernel.org> | 2025-04-11 07:40:49 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2025-04-11 11:01:34 +0200 |
| commit | 9647ce465265720509f80f21f0b36c00bb0c0d18 (patch) | |
| tree | 1e9d168ef60c21967f0c0dede02afed3a9b8b6a1 /arch/x86/kernel/alternative.c | |
| parent | 8a6a1b4e0ef15dab908a365588e06f23f9c0bad5 (diff) | |
x86/alternatives: Document 'smp_text_poke_single()'
Extend the documentation to better describe its purpose.
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/20250411054105.2341982-38-mingo@kernel.org
Diffstat (limited to 'arch/x86/kernel/alternative.c')
| -rw-r--r-- | arch/x86/kernel/alternative.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c index f0bb2158f27b..a9726cc96972 100644 --- a/arch/x86/kernel/alternative.c +++ b/arch/x86/kernel/alternative.c @@ -2880,7 +2880,7 @@ void __ref smp_text_poke_batch_add(void *addr, const void *opcode, size_t len, c } /** - * smp_text_poke_single() -- update instructions on live kernel on SMP + * smp_text_poke_single() -- update instruction on live kernel on SMP immediately * @addr: address to patch * @opcode: opcode of new instruction * @len: length to copy @@ -2888,7 +2888,8 @@ void __ref smp_text_poke_batch_add(void *addr, const void *opcode, size_t len, c * * Update a single instruction with the vector in the stack, avoiding * dynamically allocated memory. This function should be used when it is - * not possible to allocate memory. + * not possible to allocate memory for a vector. The single instruction + * is patched in immediately. */ void __ref smp_text_poke_single(void *addr, const void *opcode, size_t len, const void *emulate) { |