On Wed, Jan 14, 2015 at 10:34 PM, Michal Privoznik <mprivozn@xxxxxxxxxx> wrote: > On 14.01.2015 12:01, Shivaprasad G Bhat wrote: >> ==================================================================== >> If a device in the same iommu group is in use by a different vm, the guest boot >> fails with the below error during vfio passthrough. >> bash-4.2$ virsh start demo >> error: Failed to start domain demo >> error: internal error: process exited while connecting to monitor: >> 2014-12-02T13:43:52.020136Z qemu-system-x86_64: -device vfio-pci,host=00:1c.3,id=hostdev0,bus=pci.0,addr=0x5: vfio: error opening /dev/vfio/7: Device or resource busy >> >> Solution: >> ===================================================================== >> The patch iterates through the iommu group devices and errors out cleanly >> mentioning the device and the guest which is using the device. >> >> With Patch >> bash-4.2$ virsh start demo >> error: Failed to start domain demo >> error: Requested operation is not valid: PCI device 0000:0d:00.0 is in use by driver QEMU, domain vm10 >> >> --- >> >> Shivaprasad G Bhat (2): >> Implement virPCIDeviceGetAddress function >> check IOMMU group devices usage when preparing device for vfio passthrough >> >> >> src/util/virhostdev.c | 89 ++++++++++++++++++++++++++++++------------------- >> src/util/virpci.c | 16 +++++++++ >> src/util/virpci.h | 1 + >> 3 files changed, 72 insertions(+), 34 deletions(-) >> > > I've fixed issues I've raised and pushed. Thanks for fixing and pushing Michal.. Not sure how I missed it. I'll be cautious using make check in future. Regards, Shiva > > Michal -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list