On Thu, 23 Jun 2022 08:59:41 +0200 Christian König <christian.koenig@xxxxxxx> wrote: > The exporter isn't doing anything wrong here. DMA-buf are supposed to be > CPU cached and can also be cache hot. Hi, what is that statement based on? Were the (mandatory for CPU access) cpu_access_begin/end functions & ioctls not supposed to ensure that CPU cache is up-to-date / CPU cache is fully flushed out? Thanks, pq
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