On Thu, Aug 10, 2023 at 11:08:52AM +0800, Jason Wang wrote: > On Thu, Aug 3, 2023 at 10:37 PM Stefan Hajnoczi <stefanha@xxxxxxxxxx> wrote: > > > > Hi, > > After running "driverctl --nosave set-override 0000:01:00.0 vfio-pci" on > > a virtio-blk-pci device, /proc/iomem shows that BAR4 is still owned by > > virtio_pci_modern even though the vfio-pci driver is now bound to the > > PCI device. > > > > This regression was introduced after 6.4.7 but I don't see the culprit > > in the git logs. > > > > Unfortunately I don't have time to investigate further right now but > > I've included instructions on how to reproduce this below. > > > > Can anyone else reproduce this and can we still fix it for the upcoming > > Linux 6.5? > > This seems to be fixed by: > > https://lore.kernel.org/lkml/20230720131423-mutt-send-email-mst@xxxxxxxxxx/T/ Awesome, thanks for letting me know! Stefan > > Thanks > > > > > Thanks, > > Stefan > > --- > > $ qemu-system-x86_64 \ > > -M q35,accel=kvm,kernel-irqchip=split \ > > -cpu host \ > > -m 1G \ > > -device intel-iommu,intremap=on,device-iotlb=on \ > > --blockdev file,filename=test.img,cache.direct=on,node-name=drive0 \ > > --device virtio-blk-pci,drive=drive0 \ > > -blockdev file,filename=test2.img,cache.direct=on,node-name=drive2 \ > > --device ioh3420,id=pcie.1,chassis=1 \ > > --device virtio-blk-pci,disable-legacy=on,disable-modern=off,drive=drive2,iommu_platform=on,ats=on,bus=pcie.1 > > > > (guest)# driverctl --nosave set-override 0000:01:00.0 vfio-pci > > (guest)# cat /proc/iomem >
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