Re: [PATCH v2] gianfar: Add I/O barriers when touching buffer descriptor ownership.
flat view
From: Scott Wood <hidden>
Date: 2007-05-02 21:30:26
Also in:
netdev
Kumar Gala wrote:
Why doesn't marking the bdp pointer volatile resolve the issue in gfar_clean_rx_ring() to ensure load ordering?
Because that only addresses compiler reordering (and does so in a rather clumsy way -- not all accesses need to be strongly ordered), not hardware reordering. -Scott