[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <BN9PR11MB5276CC0D0E21F8A1C335A3828CF2A@BN9PR11MB5276.namprd11.prod.outlook.com>
Date: Mon, 11 Sep 2023 08:24:16 +0000
From: "Tian, Kevin" <kevin.tian@...el.com>
To: Ankit Agrawal <ankita@...dia.com>,
Jason Gunthorpe <jgg@...dia.com>,
Christoph Hellwig <hch@...radead.org>
CC: Alex Williamson <alex.williamson@...hat.com>,
Yishai Hadas <yishaih@...dia.com>,
"shameerali.kolothum.thodi@...wei.com"
<shameerali.kolothum.thodi@...wei.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>,
"Currid, Andy" <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>,
"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v8 1/1] vfio/nvgpu: Add vfio pci variant module for grace
hopper
> From: Ankit Agrawal <ankita@...dia.com>
> Sent: Monday, September 11, 2023 4:18 PM
>
> >> I don't see the goal as perfect emulation of the real HW.
> >>
> >> Aiming for minimally disruptive to the ecosystem to support this
> >> quirky pre-CXL HW.
> >>
> >> Perfect emulation would need a unique VFIO uAPI and more complex
> qemu
> >> changes, and it really brings nothing of value.
> >>
> >
> > Does it mean that this requires maintaining a new guest driver
> > different from the existing one on bare metal?
>
> No, the VM would use the same Nvidia open source driver that is used by the
> bare metal. (https://github.com/NVIDIA/open-gpu-kernel-modules).
because this driver already supports two ways of accessing the aperture:
one via the firmware table, the other using this fake BAR2?
Powered by blists - more mailing lists