linux-kernel - Re: hmm_range_fault related fixes and legacy API removal v2

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Message-ID: <7e1f33d4-4d3b-7927-38d1-b98b22ed4d78@nvidia.com>
Date:   Mon, 22 Jul 2019 18:11:04 -0700
From:   Ralph Campbell <rcampbell@...dia.com>
To:     Christoph Hellwig <hch@....de>,
        Jérôme Glisse <jglisse@...hat.com>,
        Jason Gunthorpe <jgg@...lanox.com>,
        Ben Skeggs <bskeggs@...hat.com>
CC:     <linux-mm@...ck.org>, <nouveau@...ts.freedesktop.org>,
        <dri-devel@...ts.freedesktop.org>, <linux-kernel@...r.kernel.org>
Subject: Re: hmm_range_fault related fixes and legacy API removal v2


On 7/22/19 2:44 AM, Christoph Hellwig wrote:
> Hi Jérôme, Ben and Jason,
> 
> below is a series against the hmm tree which fixes up the mmap_sem
> locking in nouveau and while at it also removes leftover legacy HMM APIs
> only used by nouveau.
> 
> The first 4 patches are a bug fix for nouveau, which I suspect should
> go into this merge window even if the code is marked as staging, just
> to avoid people copying the breakage.
> 
> Changes since v1:
>   - don't return the valid state from hmm_range_unregister
>   - additional nouveau cleanups
> 

I ran some OpenCL tests from Jerome with nouveau and this series,
5.3.0-rc1, and my two HMM fixes:
("mm/hmm: fix ZONE_DEVICE anon page mapping reuse")
("mm/hmm: Fix bad subpage pointer in try_to_unmap_one")

You can add for the series:
Tested-by: Ralph Campbell <rcampbell@...dia.com>