Re: [PATCH 4/6] rcu: Remove full memory barrier on boot time eqs sanity check

Valentin Schneider
2024-05-16T17:09:09Z

On 15/05/24 14:53, Frederic Weisbecker wrote:
> When the boot CPU initializes the per-CPU data on behalf of all possible
> CPUs, a sanity check is performed on each of them to make sure none is
> initialized in an extended quiescent state.
>
> This check involves a full memory barrier which is useless at this early
> boot stage.
>
> Do a plain access instead.
>
> Signed-off-by: Frederic Weisbecker <frederic@kernel.org>

Reviewed-by: Valentin Schneider <vschneid@redhat.com>