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

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Message-ID: <20140904174517.GA2685@gmail.com>
Date:	Thu, 4 Sep 2014 13:45:17 -0400
From:	Jerome Glisse <j.glisse@...il.com>
To:	Roland Dreier <roland@...nel.org>
Cc:	Latchesar Ionkov <lionkov@...l.gov>,
	Or Gerlitz <gerlitz.or@...il.com>,
	"linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Sagi Grimberg <sagig@...lanox.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 for-next 00/16] On demand paging

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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