Messages in this thread | | | Date | Fri, 24 Apr 2015 10:52:03 -0500 (CDT) | From | Christoph Lameter <> | Subject | Re: Interacting with coherent memory on external devices |
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On Fri, 24 Apr 2015, Paul E. McKenney wrote:
> > DAX is a mechanism to access memory not managed by the kernel and is the > > successor to XIP. It just happens to be needed for persistent memory. > > Fundamentally any driver can provide an MMAPPed interface to allow access > > to a devices memory. > > I will take another look, but others in this thread have called out > difficulties with DAX's filesystem nature.
Right so you do not need the filesystem structure. Just simply writing a device driver that mmaps data as needed from the coprocessor will also do the trick.
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