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The qspinlock implementation depends on having well behaved mixed-size atomics. This is true on the more widely-used platforms, but these requirements are somewhat subtle and may not be satisfied by all the platforms that qspinlock is used on. Document these requirements, so ports that use qspinlock can more easily determine if they meet these requirements. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Waiman Long <longman@redhat.com> Reviewed-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com> |
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