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Tue, 17 Feb 2026 18:03:48 -0800 (PST) Date: Tue, 17 Feb 2026 21:03:47 -0500 From: Peter Colberg To: Dirk Behme Cc: Danilo Krummrich , Bjorn Helgaas , Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= , Miguel Ojeda , Alex Gaynor , Boqun Feng , Gary Guo , =?utf-8?B?QmrDtnJu?= Roy Baron , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Abdiel Janulgue , Daniel Almeida , Robin Murphy , Greg Kroah-Hartman , Dave Ertman , Ira Weiny , Leon Romanovsky , David Airlie , Simona Vetter , Jonathan Corbet , Xu Yilun , Tom Rix , Moritz Fischer , "Rafael J. Wysocki" , linux-pci@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org, Alexandre Courbot , Alistair Popple , Joel Fernandes , John Hubbard , Zhi Wang , nouveau@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org, linux-fpga@vger.kernel.org, driver-core@lists.linux.dev, Jason Gunthorpe Subject: Re: [PATCH v2 10/10] samples: rust: add SR-IOV driver sample Message-ID: References: <20260205-rust-pci-sriov-v2-0-ef9400c7767b@redhat.com> <20260205-rust-pci-sriov-v2-10-ef9400c7767b@redhat.com> <0e762787-7270-426f-81ee-b24761617c18@de.bosch.com> Precedence: bulk X-Mailing-List: linux-fpga@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <0e762787-7270-426f-81ee-b24761617c18@de.bosch.com> Hi Dirk, On Mon, Feb 16, 2026 at 09:27:44AM +0100, Dirk Behme wrote: > Hi Peter, > > On 05.02.2026 21:59, Peter Colberg wrote: > > Add a new SR-IOV driver sample that demonstrates how to enable and > > disable the Single Root I/O Virtualization capability for a PCI device. > > > > The sample may be exercised using QEMU's 82576 (igb) emulation. > > > > Link: https://www.qemu.org/docs/master/system/devices/igb.html > > Signed-off-by: Peter Colberg > > --- > > Changes in v2: > > - Use "kernel vertical" style on imports. > > - Demonstrate how to reach driver data of PF device from VF device. > > --- > > MAINTAINERS | 1 + > > samples/rust/Kconfig | 11 ++++ > > samples/rust/Makefile | 1 + > > samples/rust/rust_driver_sriov.rs | 127 ++++++++++++++++++++++++++++++++++++++ > > 4 files changed, 140 insertions(+) > > > ... > > diff --git a/samples/rust/rust_driver_sriov.rs b/samples/rust/rust_driver_sriov.rs > > new file mode 100644 > > index 0000000000000000000000000000000000000000..84d057629c7b03d743179a4e05ccc092f814bf6b > > --- /dev/null > > +++ b/samples/rust/rust_driver_sriov.rs > > @@ -0,0 +1,127 @@ > > +// SPDX-License-Identifier: GPL-2.0 > > + > > +//! Rust SR-IOV driver sample based on QEMU's 82576 ([igb]) emulation. > > +//! > > +//! To make this driver probe, QEMU must be run with `-device igb`. > > +//! > > +//! Further, enable [vIOMMU] with interrupt remapping using, e.g., > > +//! > > +//! `-M q35,accel=kvm,kernel-irqchip=split -device intel-iommu,intremap=on,caching-mode=on` > > +//! > > +//! and append `intel_iommu=on` to the guest kernel arguments. > > +//! > > +//! [igb]: https://www.qemu.org/docs/master/system/devices/igb.html > > +//! [vIOMMU]: https://wiki.qemu.org/Features/VT-d > > + > > +use kernel::{ > > + device::Core, > > + pci, > > + prelude::*, > > + sync::aref::ARef, // > > +}; > > + > > +use core::any::TypeId; > > + > > +#[pin_data(PinnedDrop)] > > +struct SampleDriver { > > + pdev: ARef, > > + private: TypeId, > > +} > > + > > +kernel::pci_device_table!( > > + PCI_TABLE, > > + MODULE_PCI_TABLE, > > + ::IdInfo, > > + [ > > + // E1000_DEV_ID_82576 > > + (pci::DeviceId::from_id(pci::Vendor::INTEL, 0x10c9), ()), > > + // E1000_DEV_ID_82576_VF > > + (pci::DeviceId::from_id(pci::Vendor::INTEL, 0x10ca), ()) > > + ] > > +); > > + > > +#[vtable] > > +impl pci::Driver for SampleDriver { > > + type IdInfo = (); > > + > > + const ID_TABLE: pci::IdTable = &PCI_TABLE; > > + > > + fn probe(pdev: &pci::Device, _info: &Self::IdInfo) -> impl PinInit { > > + pin_init::pin_init_scope(move || { > > + dev_info!( > > + pdev.as_ref(), > > The `as_ref()` in the `dev_*()` prints can be dropped. Example: > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/samples/rust/rust_driver_pci.rs?id=600de1c008b2302b56d69ff27d12a9d8d14892ac Thank you for the pointer, dropped in v3. Peter > > Best regards > > Dirk >