linux-kernel - Re: [PATCH 00/16] mm/hmm/nouveau: THP mapping and migration

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Date:   Mon, 22 Jun 2020 09:58:54 -0700
From:   Ralph Campbell <rcampbell@...dia.com>
To:     Jason Gunthorpe <jgg@...lanox.com>
CC:     <nouveau@...ts.freedesktop.org>, <linux-rdma@...r.kernel.org>,
        <linux-mm@...ck.org>, <linux-kselftest@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Jerome Glisse <jglisse@...hat.com>,
        "John Hubbard" <jhubbard@...dia.com>,
        Christoph Hellwig <hch@....de>,
        Ben Skeggs <bskeggs@...hat.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Shuah Khan <shuah@...nel.org>
Subject: Re: [PATCH 00/16] mm/hmm/nouveau: THP mapping and migration


On 6/22/20 5:39 AM, Jason Gunthorpe wrote:
> On Fri, Jun 19, 2020 at 02:56:33PM -0700, Ralph Campbell wrote:
>> These patches apply to linux-5.8.0-rc1. Patches 1-3 should probably go
>> into 5.8, the others can be queued for 5.9. Patches 4-6 improve the HMM
>> self tests. Patch 7-8 prepare nouveau for the meat of this series which
>> adds support and testing for compound page mapping of system memory
>> (patches 9-11) and compound page migration to device private memory
>> (patches 12-16). Since these changes are split across mm core, nouveau,
>> and testing, I'm guessing Jason Gunthorpe's HMM tree would be appropriate.
> 
> You need to break this up into parts that go where they need to
> go. Nouveau rc changes should go to DRM or some series needs to
> explain the linkage
> 
>> Ralph Campbell (16):
>>    mm: fix migrate_vma_setup() src_owner and normal pages
>>    nouveau: fix migrate page regression
>>    nouveau: fix mixed normal and device private page migration
>>    mm/hmm: fix test timeout on slower machines
>>    mm/hmm/test: remove redundant page table invalidate
>>    mm/hmm: test mixed normal and device private migrations
>>    nouveau: make nvkm_vmm_ctor() and nvkm_mmu_ptp_get() static
>>    nouveau/hmm: fault one page at a time
>>    mm/hmm: add output flag for compound page mapping
>>    nouveau/hmm: support mapping large sysmem pages
>>    hmm: add tests for HMM_PFN_COMPOUND flag
>>    mm/hmm: optimize migrate_vma_setup() for holes
> 
> Order things so it is hmm, test, noeveau
> 
>>    mm: support THP migration to device private memory
>>    mm/thp: add THP allocation helper
>>    mm/hmm/test: add self tests for THP migration
>>    nouveau: support THP migration to private memory
> 
> This is another series, you should split it even if it has to go
> through the hmm tree
> 
> Jason

Thanks. I thought there was probably a better way to submit this but
I posted everything so people could see how it all fit together.