linux-ext4 - RE: [PATCH v4 00/10] Add MEMORY_DEVICE_COHERENT for coherent device memory mapping

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Message-ID: <BL1PR12MB5144C93A17CF84DF88FF6C52F7229@BL1PR12MB5144.namprd12.prod.outlook.com>
Date:   Fri, 28 Jan 2022 15:00:54 +0000
From:   "Deucher, Alexander" <Alexander.Deucher@....com>
To:     "Sierra Guiza, Alejandro (Alex)" <Alex.Sierra@....com>,
        Andrew Morton <akpm@...ux-foundation.org>
CC:     "Kuehling, Felix" <Felix.Kuehling@....com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "rcampbell@...dia.com" <rcampbell@...dia.com>,
        "linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
        "linux-xfs@...r.kernel.org" <linux-xfs@...r.kernel.org>,
        "amd-gfx@...ts.freedesktop.org" <amd-gfx@...ts.freedesktop.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "hch@....de" <hch@....de>, "jgg@...dia.com" <jgg@...dia.com>,
        "jglisse@...hat.com" <jglisse@...hat.com>,
        "apopple@...dia.com" <apopple@...dia.com>,
        "willy@...radead.org" <willy@...radead.org>
Subject: RE: [PATCH v4 00/10] Add MEMORY_DEVICE_COHERENT for coherent device
 memory mapping

[Public]

> -----Original Message-----
> From: Sierra Guiza, Alejandro (Alex) <Alex.Sierra@....com>
> Sent: Thursday, January 27, 2022 6:21 PM
> To: Andrew Morton <akpm@...ux-foundation.org>
> Cc: Kuehling, Felix <Felix.Kuehling@....com>; linux-mm@...ck.org;
> rcampbell@...dia.com; linux-ext4@...r.kernel.org; linux-
> xfs@...r.kernel.org; amd-gfx@...ts.freedesktop.org; dri-
> devel@...ts.freedesktop.org; hch@....de; jgg@...dia.com;
> jglisse@...hat.com; apopple@...dia.com; willy@...radead.org; Deucher,
> Alexander <Alexander.Deucher@....com>
> Subject: Re: [PATCH v4 00/10] Add MEMORY_DEVICE_COHERENT for
> coherent device memory mapping
> 
> Andrew,
> We're somehow new on this procedure. Are you referring to rebase this
> patch series to git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-
> next.git
> <5.17-rc1 tag>?
> 
> Regards,
> Alex Sierra
> 
> Alex Deucher,
> Just a quick heads up. This patch series contains changes to the amdgpu
> driver which we're planning to merge through Andrew's tree, If that's ok with
> you.

No problem.

Thanks!

Alex

> 
> Regards,
> Alex Sierra
> 
> On 1/27/2022 4:32 PM, Andrew Morton wrote:
> > On Wed, 26 Jan 2022 21:09:39 -0600 Alex Sierra <alex.sierra@....com>
> wrote:
> >
> >> This patch series introduces MEMORY_DEVICE_COHERENT, a type of
> memory
> >> owned by a device that can be mapped into CPU page tables like
> >> MEMORY_DEVICE_GENERIC and can also be migrated like
> >> MEMORY_DEVICE_PRIVATE.
> > Some more reviewer input appears to be desirable here.
> >
> > I was going to tentatively add it to -mm and -next, but problems.
> > 5.17-rc1's mm/migrate.c:migrate_vma_check_page() is rather different
> > from the tree you patched.  Please redo, refresh and resend?
> >