Re: [PATCH v2] Arm64: force gcc 10+ to always inline generic atomics helpers

[Julien Grall <julien@xxxxxxx>]

Hi Jan,

On 11/09/2020 11:45, Jan Beulich wrote:
> Recent versions of gcc (at least 10.x) will not inline generic atomics
> helpers by default. Instead they will expect the software to either link
> with libatomic.so or implement the helpers, which would result in
>
> undefined reference to `__aarch64_ldadd4_acq_rel'
>
> for us (not having any local implementation).
>
> To keep the previous behavior, force gcc to always inline the generic
> atomics helpers.
>
> Long term we probably want to avoid relying on gcc atomics helpers as
> this doesn't allow us to switch between LSE and LL/SC atomics.
>
> Suggested-by: Julien Grall <jgrall@xxxxxxxxxx>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Reviewed-by: Julien Grall <jgrall@xxxxxxxxxx>

Cheers,

--
Julien Grall