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Date:   Wed, 3 Jul 2019 15:03:56 -0300
From:   Jason Gunthorpe <jgg@ziepe.ca>
To:     Christoph Hellwig <hch@lst.de>,
        AlexDeucher <alexander.deucher@amd.com>
Cc:     Dan Williams <dan.j.williams@intel.com>,
        =?utf-8?B?SsOpcsO0bWU=?= Glisse <jglisse@redhat.com>,
        Ben Skeggs <bskeggs@redhat.com>,
        Ira Weiny <ira.weiny@intel.com>, linux-mm@kvack.org,
        nouveau@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
        linux-nvdimm@lists.01.org, linux-pci@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 20/22] mm: move hmm_vma_fault to nouveau
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On Mon, Jul 01, 2019 at 08:20:18AM +0200, Christoph Hellwig wrote:
> hmm_vma_fault is marked as a legacy API to get rid of, but quite suites
> the current nouvea flow.  Move it to the only user in preparation for
> fixing a locking bug involving caller and callee.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
>  drivers/gpu/drm/nouveau/nouveau_svm.c | 54 ++++++++++++++++++++++++++-
>  include/linux/hmm.h                   | 54 ---------------------------
>  2 files changed, 53 insertions(+), 55 deletions(-)

I was thinking about doing exactly this too, but amdgpu started using
this already obsolete API in their latest driver :(

So, we now need to get both drivers to move to the modern API.

Jason