[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <DD6K5GQ143FZ.KGWUVMLB3Z26@nvidia.com>
Date: Wed, 01 Oct 2025 09:26:59 +0900
From: "Alexandre Courbot" <acourbot@...dia.com>
To: "John Hubbard" <jhubbard@...dia.com>, "Danilo Krummrich"
<dakr@...nel.org>
Cc: "Alexandre Courbot" <acourbot@...dia.com>, "Joel Fernandes"
<joelagnelf@...dia.com>, "Timur Tabi" <ttabi@...dia.com>, "Alistair Popple"
<apopple@...dia.com>, "Zhi Wang" <zhiw@...dia.com>, "Surath Mitra"
<smitra@...dia.com>, "David Airlie" <airlied@...il.com>, "Simona Vetter"
<simona@...ll.ch>, "Bjorn Helgaas" <bhelgaas@...gle.com>,
Krzysztof Wilczyński <kwilczynski@...nel.org>, "Miguel
Ojeda" <ojeda@...nel.org>, "Alex Gaynor" <alex.gaynor@...il.com>, "Boqun
Feng" <boqun.feng@...il.com>, "Gary Guo" <gary@...yguo.net>,
Björn Roy Baron <bjorn3_gh@...tonmail.com>, "Benno Lossin"
<lossin@...nel.org>, "Andreas Hindborg" <a.hindborg@...nel.org>, "Alice
Ryhl" <aliceryhl@...gle.com>, "Trevor Gross" <tmgross@...ch.edu>,
<nouveau@...ts.freedesktop.org>, <linux-pci@...r.kernel.org>,
<rust-for-linux@...r.kernel.org>, "LKML" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/2] rust: pci: expose is_virtfn() and reject VFs in
nova-core
On Wed Oct 1, 2025 at 7:07 AM JST, John Hubbard wrote:
> Post-Kangrejos, the approach for NovaCore + VFIO has changed a bit: the
> idea now is that VFIO drivers, for NVIDIA GPUs that are supported by
> NovaCore, should bind directly to the GPU's VFs. (An earlier idea was to
> let NovaCore bind to the VFs, and then have NovaCore call into the upper
> (VFIO) module via Aux Bus, but this turns out to be awkward and is no
> longer in favor.) So, in order to support that:
>
> Nova-core must only bind to Physical Functions (PFs) and regular PCI
> devices, not to Virtual Functions (VFs) created through SR-IOV.
Naive question: will guests also see the passed-through VF as a VF? If
so, wouldn't this change also prevents guests from using Nova?
Powered by blists - more mailing lists