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Message-ID: <20250328132704.1901674-11-mingo@kernel.org>
Date: Fri, 28 Mar 2025 14:26:25 +0100
From: Ingo Molnar <mingo@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: Juergen Gross <jgross@...e.com>,
"H . Peter Anvin" <hpa@...or.com>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Peter Zijlstra <peterz@...radead.org>,
Borislav Petkov <bp@...en8.de>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...nel.org>
Subject: [PATCH 10/49] x86/alternatives: Update comments in int3_emulate_push()
The idtentry macro in entry_64.S hasn't had a create_gap
option for 5 years - update the comment.
(Also clean up the entire comment block while at it.)
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
arch/x86/include/asm/text-patching.h | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/x86/include/asm/text-patching.h b/arch/x86/include/asm/text-patching.h
index 7f296a05c5fe..b7e8fb8f3648 100644
--- a/arch/x86/include/asm/text-patching.h
+++ b/arch/x86/include/asm/text-patching.h
@@ -142,13 +142,14 @@ static __always_inline
void int3_emulate_push(struct pt_regs *regs, unsigned long val)
{
/*
- * The int3 handler in entry_64.S adds a gap between the
+ * The INT3 handler in entry_64.S adds a gap between the
* stack where the break point happened, and the saving of
* pt_regs. We can extend the original stack because of
- * this gap. See the idtentry macro's create_gap option.
+ * this gap. See the idtentry macro's X86_TRAP_BP logic.
*
- * Similarly entry_32.S will have a gap on the stack for (any) hardware
- * exception and pt_regs; see FIXUP_FRAME.
+ * Similarly, entry_32.S will have a gap on the stack for
+ * (any) hardware exception and pt_regs; see the
+ * FIXUP_FRAME macro.
*/
regs->sp -= sizeof(unsigned long);
*(unsigned long *)regs->sp = val;
--
2.45.2
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