linux-kernel - Re: [PATCH v1 0/3] vfio/nvgrace-gpu: Enable grace blackwell boards

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Message-ID:
 <SA1PR12MB7199F0B2EC2A41E0CD724719B07E2@SA1PR12MB7199.namprd12.prod.outlook.com>
Date: Tue, 8 Oct 2024 07:22:24 +0000
From: Ankit Agrawal <ankita@...dia.com>
To: Alex Williamson <alex.williamson@...hat.com>
CC: Jason Gunthorpe <jgg@...dia.com>, Yishai Hadas <yishaih@...dia.com>,
	"shameerali.kolothum.thodi@...wei.com"
	<shameerali.kolothum.thodi@...wei.com>, "kevin.tian@...el.com"
	<kevin.tian@...el.com>, Zhi Wang <zhiw@...dia.com>, Aniket Agashe
	<aniketa@...dia.com>, Neo Jia <cjia@...dia.com>, Kirti Wankhede
	<kwankhede@...dia.com>, "Tarun Gupta (SW-GPU)" <targupta@...dia.com>, Vikram
 Sethi <vsethi@...dia.com>, Andy Currid <acurrid@...dia.com>, Alistair Popple
	<apopple@...dia.com>, John Hubbard <jhubbard@...dia.com>, Dan Williams
	<danw@...dia.com>, "Anuj Aggarwal (SW-GPU)" <anuaggarwal@...dia.com>, Matt
 Ochs <mochs@...dia.com>, "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 0/3] vfio/nvgrace-gpu: Enable grace blackwell boards

>>
>> Hi Alex, the Qemu enablement changes for GH is already in Qemu 9.0.
>> This is the Generic initiator change that got merged:
>> https://lore.kernel.org/all/20240308145525.10886-1-ankita@nvidia.com/
>>
>> The missing pieces are actually in the kvm/kernel viz:
>> 1. KVM need to map the device memory as Normal. The KVM patch was
>> proposed here. This patch need refresh to address the suggestions:
>> https://lore.kernel.org/all/20230907181459.18145-2-ankita@nvidia.com/
>> 2. ECC handling series for the GPU device memory that is remap_pfn_range()
>> mapped: https://lore.kernel.org/all/20231123003513.24292-1-ankita@nvidia.com/
>>
>> With those changes, the GH would be functional with the Qemu 9.0.
>
> Sure, unless we note that those series were posted a year ago, which
> makes it much harder to claim that we're actively enabling upstream
> testing for this driver that we're now trying to extend to new
> hardware.  Thanks,
>
> Alex

Right, I am also working to implement the leftover items mentioned above.
The work to refresh the aforementioned items is ongoing and would be posting
it shortly as well (starting with the KVM patch).