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Date:   Wed, 24 Mar 2021 13:39:04 +1100
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Subject: Re: [PATCH 8/9] vfio/pci: export nvlink2 support into vendor vfio_pci
 drivers
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To:     Jason Gunthorpe <jgg@nvidia.com>,
        Alex Williamson <alex.williamson@redhat.com>
Cc:     Christoph Hellwig <hch@lst.de>,
        Max Gurtovoy <mgurtovoy@nvidia.com>, cohuck@redhat.com,
        kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
        liranl@nvidia.com, oren@nvidia.com, tzahio@nvidia.com,
        leonro@nvidia.com, yarong@nvidia.com, aviadye@nvidia.com,
        shahafs@nvidia.com, artemp@nvidia.com, kwankhede@nvidia.com,
        ACurrid@nvidia.com, cjia@nvidia.com, yishaih@nvidia.com,
        mjrosato@linux.ibm.com
References: <20210319162033.GA18218@lst.de>
 <20210319162848.GZ2356281@nvidia.com> <20210319163449.GA19186@lst.de>
 <20210319113642.4a9b0be1@omen.home.shazbot.org>
 <20210319200749.GB2356281@nvidia.com>
 <20210319150809.31bcd292@omen.home.shazbot.org>
 <20210319225943.GH2356281@nvidia.com>
 <20210319224028.51b01435@x1.home.shazbot.org>
 <20210321125818.GM2356281@nvidia.com>
 <20210322104016.36eb3c1f@omen.home.shazbot.org>
 <20210323193213.GM2356281@nvidia.com>
From:   Alexey Kardashevskiy <aik@ozlabs.ru>
In-Reply-To: <20210323193213.GM2356281@nvidia.com>
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On 24/03/2021 06:32, Jason Gunthorpe wrote:

>>> For NVIDIA GPU Max checked internally and we saw it looks very much
>>> like how Intel GPU works. Only some PCI IDs trigger checking on the
>>> feature the firmware thing is linked to.
>>
>> And as Alexey noted, the table came up incomplete.  But also those same
>> devices exist on platforms where this extension is completely
>> irrelevant.
> 
> I understood he ment that NVIDI GPUs *without* NVLINK can exist, but
> the ID table we have here is supposed to be the NVLINK compatible
> ID's.


I also meant there are more (than in the proposed list)  GPUs with 
NVLink which will work on P9.


-- 
Alexey