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| author | Thomas Gleixner <tglx@kernel.org> | 2026-06-02 11:09:47 +0200 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2026-06-03 11:38:50 +0200 |
| commit | 7b125c44d0b7f617ee81dffd14ce116149d03cb6 (patch) | |
| tree | 394f0a03a05aacc998192bb3c0964fafb863af45 /rust/kernel | |
| parent | 6149fc36c09b91050b62e8e68a91027df8df7345 (diff) | |
x86: Select ARCH_MEMORY_ORDER_TSO
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
Diffstat (limited to 'rust/kernel')
0 files changed, 0 insertions, 0 deletions