linux-kernel - Re: [PATCH] mm/hmm: replace hmm_update with mmu_notifier

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Message-ID: <20190725011424.GA377@ziepe.ca>
Date:   Wed, 24 Jul 2019 22:14:24 -0300
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     Ralph Campbell <rcampbell@...dia.com>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        nouveau@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        Jérôme Glisse <jglisse@...hat.com>,
        Christoph Hellwig <hch@....de>, Ben Skeggs <bskeggs@...hat.com>
Subject: Re: [PATCH] mm/hmm: replace hmm_update with mmu_notifier_range

On Tue, Jul 23, 2019 at 02:05:06PM -0700, Ralph Campbell wrote:
> The hmm_mirror_ops callback function sync_cpu_device_pagetables() passes
> a struct hmm_update which is a simplified version of struct
> mmu_notifier_range. This is unnecessary so replace hmm_update with
> mmu_notifier_range directly.
> 
> Signed-off-by: Ralph Campbell <rcampbell@...dia.com>
> Cc: "Jérôme Glisse" <jglisse@...hat.com>
> Cc: Jason Gunthorpe <jgg@...lanox.com>
> Cc: Christoph Hellwig <hch@....de>
> Cc: Ben Skeggs <bskeggs@...hat.com>
> 
> This is based on 5.3.0-rc1 plus Christoph Hellwig's 6 patches
> ("hmm_range_fault related fixes and legacy API removal v2").
> Jason, I believe this is the patch you were requesting.

Doesn't this need revision to include amgpu?

drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c:         .sync_cpu_device_pagetables = amdgpu_mn_sync_pagetables_gfx,
drivers/gpu/drm/amd/amdgpu/amdgpu_mn.c:         .sync_cpu_device_pagetables = amdgpu_mn_sync_pagetables_hsa,

Thanks,
Jason