linux-kernel - [PATCH 5/6] x86/vdso: Use CFI macros in __vdso_sgx_enter

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Message-ID: <20250425024023.000117829@goodmis.org>
Date: Thu, 24 Apr 2025 22:37:55 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: linux-kernel@...r.kernel.org,
 linux-trace-kernel@...r.kernel.org
Cc: Masami Hiramatsu <mhiramat@...nel.org>,
 Mark Rutland <mark.rutland@....com>,
 Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
 Andrew Morton <akpm@...ux-foundation.org>,
 Josh Poimboeuf <jpoimboe@...nel.org>,
 Jens Remus <jremus@...ux.ibm.com>,
 x86@...nel.org,
 Peter Zijlstra <peterz@...radead.org>,
 Ingo Molnar <mingo@...nel.org>,
 Indu Bhagat <indu.bhagat@...cle.com>,
 Andy Lutomirski <luto@...nel.org>,
 Thomas Gleixner <tglx@...utronix.de>,
 Borislav Petkov <bp@...en8.de>,
 Dave Hansen <dave.hansen@...ux.intel.com>,
 "H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH 5/6] x86/vdso: Use CFI macros in __vdso_sgx_enter_enclave()

From: Josh Poimboeuf <jpoimboe@...nel.org>

Use the CFI macros instead of the raw .cfi_* directives to be consistent
with the rest of the VDSO asm.  It's also easier on the eyes.

No functional changes.

Signed-off-by: Josh Poimboeuf <jpoimboe@...nel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@...dmis.org>
---
 arch/x86/entry/vdso/vsgx.S | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/arch/x86/entry/vdso/vsgx.S b/arch/x86/entry/vdso/vsgx.S
index c0342238c976..8d7b8eb45c50 100644
--- a/arch/x86/entry/vdso/vsgx.S
+++ b/arch/x86/entry/vdso/vsgx.S
@@ -24,13 +24,14 @@
 .section .text, "ax"

 SYM_FUNC_START(__vdso_sgx_enter_enclave)
+	SYM_F_ALIGN
 	push	%rbp
-	.cfi_adjust_cfa_offset	8
-	.cfi_rel_offset		%rbp, 0
+	CFI_ADJUST_CFA_OFFSET	8
+	CFI_REL_OFFSET		%rbp, 0
 	mov	%rsp, %rbp
-	.cfi_def_cfa_register	%rbp
+	CFI_DEF_CFA_REGISTER	%rbp
 	push	%rbx
-	.cfi_rel_offset		%rbx, -8
+	CFI_REL_OFFSET		%rbx, -8

 	mov	%ecx, %eax
 .Lenter_enclave:
@@ -77,13 +78,11 @@ SYM_FUNC_START(__vdso_sgx_enter_enclave)
 .Lout:
 	pop	%rbx
 	leave
-	.cfi_def_cfa		%rsp, 8
+	CFI_DEF_CFA		%rsp, 8
 	RET

-	/* The out-of-line code runs with the pre-leave stack frame. */
-	.cfi_def_cfa		%rbp, 16
-
 .Linvalid_input:
+	CFI_DEF_CFA		%rbp, 16
 	mov	$(-EINVAL), %eax
 	jmp	.Lout

-- 
2.47.2