# Re: \[PATCH v7 4/6\] x86/vdso: Use SYM\_FUNC\_{START,END} in \_\_kernel\_vsyscall()

- From: H. Peter Anvin \<hpa@zytor.com\>
- Date: 2026-02-04 00:45:40 
- List: linux-trace-kernel
- Page: https://ratatoskr.run/linux-trace-kernel/2026/02/3400518
- Thread: https://ratatoskr.run/linux-trace-kernel/2026/02/3399878/t.md

```text
On 2026-02-03 09:19, Jens Remus wrote:
> From: Josh Poimboeuf <jpoimboe@kernel.org>
> 
> Use SYM_FUNC_{START,END} instead of all the boilerplate.  No functional
> change.
> 
> Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
> Signed-off-by: Jens Remus <redacted>
> ---
> 
> Notes (jremus):
>     Changes in v7:
>     - Rebase on H. Peter Anvin's vDSO changes on tip:x86/entry.
> 
>  arch/x86/entry/vdso/vdso32/system_call.S | 10 ++--------
>  1 file changed, 2 insertions(+), 8 deletions(-)
> 
> diff --git a/arch/x86/entry/vdso/vdso32/system_call.S b/arch/x86/entry/vdso/vdso32/system_call.S
> index 9157cf9c5749..a90f4f7de396 100644
> --- a/arch/x86/entry/vdso/vdso32/system_call.S
> +++ b/arch/x86/entry/vdso/vdso32/system_call.S
> @@ -9,11 +9,7 @@
>  #include <asm/alternative.h>
>  
>  	.text
> -	.globl __kernel_vsyscall
> -	.type __kernel_vsyscall,@function
> -	ALIGN
> -__kernel_vsyscall:
> -	CFI_STARTPROC
> +SYM_FUNC_START(__kernel_vsyscall)
>  
>  	/*
>  	 * If using int $0x80, there is no reason to muck about with the
> @@ -85,7 +81,5 @@ SYM_INNER_LABEL(int80_landing_pad, SYM_L_GLOBAL)
>  	CFI_RESTORE		ecx
>  	CFI_ADJUST_CFA_OFFSET	-4
>  	RET
> -	CFI_ENDPROC
> -
> -	.size __kernel_vsyscall,.-__kernel_vsyscall
> +SYM_FUNC_END(__kernel_vsyscall)
>  	.previous

Looks good to me.

Acked-by: H. Peter Anvin (Intel) <hpa@zytor.com>

```