linux-kernel - [PATCH 1/3] x86: fix typo in comment for poke_text

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Date:   Mon,  2 Sep 2019 12:24:34 +0200
From:   Marco Ammon <marco.ammon@....de>
To:     linux-kernel@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        trivial@...nel.org, Marco Ammon <marco.ammon@....de>
Subject: [PATCH 1/3] x86: fix typo in comment for poke_text_early

In the documentation for text_poke_early, "protected again" should
actually be "protected against". This patch fixes the spelling mistake.

Signed-off-by: Marco Ammon <marco.ammon@....de>
---
 arch/x86/include/asm/text-patching.h | 4 ++--
 arch/x86/kernel/alternative.c        | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/include/asm/text-patching.h b/arch/x86/include/asm/text-patching.h
index 70c09967a999..5e8319bb207a 100644
--- a/arch/x86/include/asm/text-patching.h
+++ b/arch/x86/include/asm/text-patching.h
@@ -45,8 +45,8 @@ extern void text_poke_early(void *addr, const void *opcode, size_t len);
  * no thread can be preempted in the instructions being modified (no iret to an
  * invalid instruction possible) or if the instructions are changed from a
  * consistent state to another consistent state atomically.
- * On the local CPU you need to be protected again NMI or MCE handlers seeing an
- * inconsistent instruction while you patch.
+ * On the local CPU you need to be protected against NMI or MCE handlers seeing
+ * an inconsistent instruction while you patch.
  */
 extern void *text_poke(void *addr, const void *opcode, size_t len);
 extern void *text_poke_kgdb(void *addr, const void *opcode, size_t len);
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index ccd32013c47a..0eefd497e3d8 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -753,8 +753,8 @@ void __init alternative_instructions(void)
  * When you use this code to patch more than one byte of an instruction
  * you need to make sure that other CPUs cannot execute this code in parallel.
  * Also no thread must be currently preempted in the middle of these
- * instructions. And on the local CPU you need to be protected again NMI or MCE
- * handlers seeing an inconsistent instruction while you patch.
+ * instructions. And on the local CPU you need to be protected against NMI or
+ * MCE handlers seeing an inconsistent instruction while you patch.
  */
 void __init_or_module text_poke_early(void *addr, const void *opcode,
 				      size_t len)
-- 
2.23.0