On Wed, 05 Aug 2026 00:20:57 +0000 Josh Hilke <[email protected]> wrote:
> This v10 of a series which adds a VFIO selftest driver for the Intel > Gigabit Ethernet controller (IGB), specifically targeting the 82576 > device. IGB is fully virtualized in QEMU, making it suitable for running > VFIO selftests without specialized hardware. > > v9: > https://lore.kernel.org/kvm/[email protected]/ > > Version 10 adds an assert in the IGB driver to prevent DMA transfers > smaller than 60 bytes, avoiding out-of-bounds DMA writes caused by > hardware padding on short transfers, and squashes the recovery logic > (previously Patch 5) into the main driver patch to keep the driver > self-contained. Also add some logic from Alex to correct the ordering of > Tx/Rx queue setup. > > This series applies on top of linux-next, but the VFIO selftests don't > build without this patch which fixes a compile error for the test > fixture: > https://lore.kernel.org/linux-kselftest/[email protected]/ > > Testing > ======= > - VFIO selftests builds clean at every commit > - vfio_pci_driver_test passes using IGB driver + QEMU. Use the following > command to run the tests: > > vng \ > --run arch/x86/boot/bzImage \ > --user root \ > --disable-microvm \ > --memory 32G \ > --cpus 8 \ > --qemu-opts="-M q35,accel=kvm,kernel-irqchip=split" \ > --qemu-opts="-device > intel-iommu,intremap=on,caching-mode=on,device-iotlb=on" \ > --qemu-opts="-netdev user,id=net0 -device igb,netdev=net0,addr=09.0" \ > --append "console=ttyS0 earlyprintk=ttyS0 intel_iommu=on iommu=pt" \ > --exec "modprobe vfio-pci && \ > ./tools/testing/selftests/vfio/scripts/setup.sh 0000:00:09.0 && \ > ./tools/testing/selftests/vfio/scripts/run.sh > ./tools/testing/selftests/vfio/vfio_pci_driver_test" > -------- > Changelog: > > v9 -> v10: > - Add assert in IGB driver to prevent DMA transfers < 60 bytes (Ethernet > minimum payload size) to avoid memory corruption from hardware padding. > (Sashiko) > - Squash recovery logic into the main driver patch to make the driver > self-contained. > - Set per-queue enable bits _after_ enabling global queue bits (Alex) Applied to vfio next branch for v7.3. Thanks, Alex
