Re: [PATCH] mm: export mmu notifier invalidates

[Andrew Morton <akpm@linux-foundation.org>]

On Wed, 13 Feb 2013 09:03:40 -0600
Robin Holt <holt@sgi.com> wrote:

> > But in a better world, the core kernel would support your machines
> > adequately and you wouldn't need to maintain that out-of-tree MM code. 
> > What are the prospects of this?
> 
> We can put it on our todo list.  Getting a user of this infrastructure
> will require changes by Dimitri for the GRU driver (drivers/misc/sgi-gru).
> He is currently focused on getting the design of some upcoming hardware
> finalized and design changes tested in our simulation environment so he
> will be consumed for the next several months.
> 
> If you would like, I can clean up the driver in my spare time and submit
> it for review.  Would you consider allowing its inclusion without the
> GRU driver as a user?

>From Cliff's description it sounded like that driver is
duplicating/augmenting core MM functions.  I was more wondering
whether core MM could be enhanced so that driver becomes obsolete?

> In the transition period, could we allow this change in and then remove
> the exports as part of that driver being accepted?  That would help us
> with an upcoming distro release.

I'm OK with this patch for 3.9-rc1.

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