Re: [PATCH 20/32] s390: Turn off KMSAN for boot, vdso and purgatory

[Alexander Potapenko]

On Wed, Nov 15, 2023 at 9:34 PM Ilya Leoshkevich <iii@xxxxxxxxxxxxx> wrote:
>
> All other sanitizers are disabled for these components as well.
>
> Reviewed-by: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
> Signed-off-by: Ilya Leoshkevich <iii@xxxxxxxxxxxxx>
Reviewed-by: Alexander Potapenko <glider@xxxxxxxxxx>
(see a nit below)

> ---
>  arch/s390/boot/Makefile          | 1 +
>  arch/s390/kernel/vdso32/Makefile | 1 +
>  arch/s390/kernel/vdso64/Makefile | 1 +
>  arch/s390/purgatory/Makefile     | 1 +
>  4 files changed, 4 insertions(+)
>
> diff --git a/arch/s390/boot/Makefile b/arch/s390/boot/Makefile
> index c7c81e5f9218..5a05c927f703 100644
> --- a/arch/s390/boot/Makefile
> +++ b/arch/s390/boot/Makefile
> @@ -8,6 +8,7 @@ GCOV_PROFILE := n
>  UBSAN_SANITIZE := n
>  KASAN_SANITIZE := n
>  KCSAN_SANITIZE := n
> +KMSAN_SANITIZE := n

Nit: I think having even a one-line comment before this block
(something similar to
https://elixir.bootlin.com/linux/latest/source/arch/x86/boot/Makefile#L12)
will make it more clear.

But given that the comment wasn't there before, leaving this up to you.