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

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Date:   Wed, 20 Feb 2019 18:36:23 -0500
From:   Jerome Glisse <jglisse@...hat.com>
To:     John Hubbard <jhubbard@...dia.com>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Felix Kuehling <Felix.Kuehling@....com>,
        Christian König <christian.koenig@....com>,
        Ralph Campbell <rcampbell@...dia.com>,
        Jason Gunthorpe <jgg@...lanox.com>,
        Dan Williams <dan.j.williams@...el.com>
Subject: Re: [PATCH 00/10] HMM updates for 5.1

On Wed, Feb 20, 2019 at 03:17:58PM -0800, John Hubbard wrote:
> On 1/29/19 8:54 AM, jglisse@...hat.com wrote:
> > From: Jérôme Glisse <jglisse@...hat.com>
> > 
> > This patchset improves the HMM driver API and add support for hugetlbfs
> > and DAX mirroring. The improvement motivation was to make the ODP to HMM
> > conversion easier [1]. Because we have nouveau bits schedule for 5.1 and
> > to avoid any multi-tree synchronization this patchset adds few lines of
> > inline function that wrap the existing HMM driver API to the improved
> > API. The nouveau driver was tested before and after this patchset and it
> > builds and works on both case so there is no merging issue [2]. The
> > nouveau bit are queue up for 5.1 so this is why i added those inline.
> > 
> > If this get merge in 5.1 the plans is to merge the HMM to ODP in 5.2 or
> > 5.3 if testing shows any issues (so far no issues has been found with
> > limited testing but Mellanox will be running heavier testing for longer
> > time).
> > 
> > To avoid spamming mm i would like to not cc mm on ODP or nouveau patches,
> > however if people prefer to see those on mm mailing list then i can keep
> > it cced.
> > 
> > This is also what i intend to use as a base for AMD and Intel patches
> > (v2 with more thing of some rfc which were already posted in the past).
> > 
> 
> Hi Jerome,
> 
> Although Ralph has been testing and looking at this patchset, I just now
> noticed that there hasn't been much public review of it, so I'm doing
> a bit of that now. I don't think it's *quite* too late, because we're
> still not at the 5.1 merge window...sorry for taking so long to get to
> this.
> 
> Ralph, you might want to add ACKs or Tested-by's to some of these
> patches (or even Reviewed-by, if you went that deep, which I suspect you
> did in some cases), according to what you feel comfortable with?

More eyes are always welcome, i tested with nouveau and with infinibanb
mlx5. It seemed to work properly in my testing but i might have miss-
something.

Cheers,
Jérôme