Re: [PATCH v1 for-next 00/16] On demand paging

From: Jerome Glisse
Date: Thu Sep 04 2014 - 13:45:36 EST


On Wed, Sep 03, 2014 at 02:15:51PM -0700, Roland Dreier wrote:
> > I would like to note that we at Los Alamos National Laboratory are very
> > interested in this functionality and it would be great if it gets accepted.
>
> Have you done any review or testing of these changes? If so can you
> share the results?

So jumping in here. I am working on a similar issue, ie on a subsystem that
allow a device to mirror a process address space (or part of it) using its
own mmu and page table.

While i am aiming at providing a generic API, it is not yet fully cook thus
i think having a driver implement its own code in the meantime is something
we have to live with. I am sharing the frustration of Sagi or Haggai on how
hard it is to get any kind of review.

I have not yet reviewed this code but it's nearing the top of on my todo list.
Even thought i am not an authoritative figure in either mm or rdma.

For anyone interested in taking a peak at HMM (subsystem i am working on to
provide same functionality and more) :

http://marc.info/?l=linux-mm&m=140933942705466&w=4

Cheers,
Jérôme

>
> - R.
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