linux-kernel - [RFC 03/31] x86/kprobes: Remove STACK_FRAME_NON

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Message-ID: <5902e2e9cfe2ed9224f165585d7e41f93bb04275.1725334260.git.jpoimboe@kernel.org>
Date: Mon,  2 Sep 2024 20:59:46 -0700
From: Josh Poimboeuf <jpoimboe@...nel.org>
To: live-patching@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	x86@...nel.org,
	Miroslav Benes <mbenes@...e.cz>,
	Petr Mladek <pmladek@...e.com>,
	Joe Lawrence <joe.lawrence@...hat.com>,
	Jiri Kosina <jikos@...nel.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Marcos Paulo de Souza <mpdesouza@...e.com>,
	Song Liu <song@...nel.org>
Subject: [RFC 03/31] x86/kprobes: Remove STACK_FRAME_NON_STANDARD annotation

Since commit 877b145f0f47 ("x86/kprobes: Move trampoline code into
RODATA"), the optprobe template code is no longer analyzed by objtool so
it doesn't need to be ignored.

Signed-off-by: Josh Poimboeuf <jpoimboe@...nel.org>
---
 arch/x86/kernel/kprobes/opt.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/arch/x86/kernel/kprobes/opt.c b/arch/x86/kernel/kprobes/opt.c
index 36d6809c6c9e..e46d1710e785 100644
--- a/arch/x86/kernel/kprobes/opt.c
+++ b/arch/x86/kernel/kprobes/opt.c
@@ -103,7 +103,6 @@ static void synthesize_set_arg1(kprobe_opcode_t *addr, unsigned long val)
 
 asm (
 			".pushsection .rodata\n"
-			"optprobe_template_func:\n"
 			".global optprobe_template_entry\n"
 			"optprobe_template_entry:\n"
 #ifdef CONFIG_X86_64
@@ -160,9 +159,6 @@ asm (
 			"optprobe_template_end:\n"
 			".popsection\n");
 
-void optprobe_template_func(void);
-STACK_FRAME_NON_STANDARD(optprobe_template_func);
-
 #define TMPL_CLAC_IDX \
 	((long)optprobe_template_clac - (long)optprobe_template_entry)
 #define TMPL_MOVE_IDX \
-- 
2.45.2