Messages in this thread | | | Date | Mon, 28 Nov 2016 15:24:52 -0700 | From | Jason Gunthorpe <> | Subject | Re: Enabling peer to peer device transactions for PCIe devices |
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On Mon, Nov 28, 2016 at 04:55:23PM -0500, Serguei Sagalovitch wrote:
> >We haven't touch this in a long time and perhaps it changed, but there > >definitely was a call back in the PeerDirect API to allow the GPU to > >invalidate the mapping. That's what we don't want.
> I assume that you are talking about "invalidate_peer_memory()' callback? > I was told that it is the "last resort" because HCA (and driver) is not > able to handle it in the safe manner so it is basically "abort" everything.
If it is a last resort to save system stability then kill the impacted process, that will release the MRs.
Jason
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