Re: [PATCH 00/10] HMM updates for 5.1

[Jason Gunthorpe]

On Wed, Mar 13, 2019 at 09:10:04AM -0700, Andrew Morton wrote:
> On Tue, 12 Mar 2019 21:27:06 -0400 Jerome Glisse <jglisse@xxxxxxxxxx> wrote:
> 
> > Andrew you will not be pushing this patchset in 5.1 ?
> 
> I'd like to.  It sounds like we're converging on a plan.
> 
> It would be good to hear more from the driver developers who will be
> consuming these new features - links to patchsets, review feedback,
> etc.  Which individuals should we be asking?  Felix, Christian and
> Jason, perhaps?

At least the Mellanox driver patch looks like a good improvement:

https://patchwork.kernel.org/patch/10786625/
 5 files changed, 202 insertions(+), 452 deletions(-)

In fact it hollows out the 'umem_odp' driver abstraction we already
had in the RDMA core.

So, I fully expect to see this API used in mlx5 and RDMA-core after it
is merged.

We've done some testing now, and there are still some outstanding
questions on the driver parts, but I haven't seen anything
fundamentally wrong with HMM mirror come up.

Jason