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Subject: Re: [PATCH 0/2] Revert and rework on the metadata accelreation
To:     Jason Gunthorpe <jgg@mellanox.com>
Cc:     "mst@redhat.com" <mst@redhat.com>,
        "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
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        "aarcange@redhat.com" <aarcange@redhat.com>,
        "jglisse@redhat.com" <jglisse@redhat.com>,
        "linux-mm@kvack.org" <linux-mm@kvack.org>
References: <20190905122736.19768-1-jasowang@redhat.com>
 <20190905135907.GB6011@mellanox.com>
 <7785d39b-b4e7-8165-516c-ee6a08ac9c4e@redhat.com>
 <20190907150330.GC2940@mellanox.com>
From:   Jason Wang <jasowang@redhat.com>
Message-ID: <bc1da56e-6256-51a4-57f7-9080099021fb@redhat.com>
Date:   Mon, 9 Sep 2019 10:29:04 +0800
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On 2019/9/7 下午11:03, Jason Gunthorpe wrote:
> On Fri, Sep 06, 2019 at 06:02:35PM +0800, Jason Wang wrote:
>> On 2019/9/5 下午9:59, Jason Gunthorpe wrote:
>>> On Thu, Sep 05, 2019 at 08:27:34PM +0800, Jason Wang wrote:
>>>> Hi:
>>>>
>>>> Per request from Michael and Jason, the metadata accelreation is
>>>> reverted in this version and rework in next version.
>>>>
>>>> Please review.
>>>>
>>>> Thanks
>>>>
>>>> Jason Wang (2):
>>>>     Revert "vhost: access vq metadata through kernel virtual address"
>>>>     vhost: re-introducing metadata acceleration through kernel virtual
>>>>       address
>>> There are a bunch of patches in the queue already that will help
>>> vhost, and I a working on one for next cycle that will help alot more
>>> too.
>>
>> I will check those patches, but if you can give me some pointers or keywords
>> it would be much appreciated.
> You can look here:
>
> https://github.com/jgunthorpe/linux/commits/mmu_notifier
>
> The first parts, the get/put are in the hmm tree, and the last part,
> the interval tree in the last commit is still a WIP, but it would
> remove alot of that code from vhost as well.
>
> Jason


Thanks a lot, will have a look at these and come back if I met any issues.