Re: [PATCH v2 02/10] s390/ftrace: Serialize text patching with text_mutex

[Ilya Leoshkevich]

On 10/27/26 15:30, Heiko Carstens wrote:
> Add ftrace_arch_code_modify_prepare() and extend
> ftrace_arch_code_modify_post_process() to acquire and release
> text_mutex when ftrace code is modified.
>
> Also add locking to ftrace_init_nop(). This way s390 uses text_mutex
> like e.g. x86 and riscv.
>
> This is part of larger series where at the end s390_kernel_write()
> requires that callers hold text_mutex for serialization.
>
> Signed-off-by: Heiko Carstens <hca@xxxxxxxxxxxxx>
> ---
>   arch/s390/kernel/ftrace.c | 11 +++++++++++
>   1 file changed, 11 insertions(+)

Reviewed-by: Ilya Leoshkevich <iii@xxxxxxxxxxxxx>