linux-kernel - Re: hmm_range_fault related fixes and legacy API removal v3

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Message-ID: <a07dbc3b-7a54-e524-944a-b7e4e49b2a93@nvidia.com>
Date:   Thu, 25 Jul 2019 17:55:01 -0700
From:   Ralph Campbell <rcampbell@...dia.com>
To:     Jason Gunthorpe <jgg@...lanox.com>, Christoph Hellwig <hch@....de>
CC:     Jérôme Glisse <jglisse@...hat.com>,
        Ben Skeggs <bskeggs@...hat.com>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        "nouveau@...ts.freedesktop.org" <nouveau@...ts.freedesktop.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: hmm_range_fault related fixes and legacy API removal v3


On 7/25/19 5:16 PM, Jason Gunthorpe wrote:
> On Wed, Jul 24, 2019 at 08:52:51AM +0200, 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 v2:
>>   - new patch from Jason to document FAULT_FLAG_ALLOW_RETRY semantics
>>     better
>>   - remove -EAGAIN handling in nouveau earlier
> 
> I don't see Ralph's tested by, do you think it changed enough to
> require testing again? If so, Ralph would you be so kind?
> 
> In any event, I'm sending this into linux-next and intend to forward
> the first four next week.
> 
> Thanks,
> Jason
> 

I have been testing Christoph's v3 with my set of v2 changes so
feel free to add my tested-by.