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7b125c44d0
The generic unsafe_atomic_store_release_user() implementation does:
if (!IS_ENABLED(CONFIG_ARCH_MEMORY_ORDER_TSO))
smp_mb();
unsafe_put_user();
As x86 implements Total Store Order (TSO) which means stores imply release,
select ARCH_MEMORY_ORDER_TSO to avoid the unnecessary smp_mb().
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: André Almeida <andrealmeid@igalia.com>
Link: https://patch.msgid.link/20260602090535.564499644@kernel.org