Messages in this thread | | | Date | Thu, 23 Jun 2022 10:13:26 +0300 | From | Pekka Paalanen <> | Subject | Re: DMA-buf and uncached system memory |
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On Thu, 23 Jun 2022 08:59:41 +0200 Christian König <christian.koenig@amd.com> 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 [unhandled content-type:application/pgp-signature] | |