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Date: Mon, 10 Oct 2016 15:31:00 +0300
From: Nikita Yushchenko <nikita.yoush@...entembedded.com>
To: David Miller <davem@...emloft.net>
Cc: jeffrey.t.kirsher@...el.com, intel-wired-lan@...ts.osuosl.org,
netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
cphealy@...il.com
Subject: Re: igb driver can cause cache invalidation of non-owned memory?
>> All the data has been synced
>
> Non-synced data is write done by CPU executing upper layers of network stack,
Upper layers shall never get area that is still dma_map()ed and will be
dma_unmap()ed in future. But with igb, this is exactly what happens.
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