Ping! Thanks, Shiva On Thu, Dec 4, 2014 at 12:56 PM, Shivaprasad G Bhat <shivaprasadbhat@xxxxxxxxx> wrote: > Problem: > ==================================================================== > 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): > Move struct _virPCIDevice definition from virpci.c to virpci.h > check IOMMU group devices usage when preparing device for vfio passthrough > > > src/util/virhostdev.c | 87 +++++++++++++++++++++++++++++-------------------- > src/util/virpci.c | 29 ---------------- > src/util/virpci.h | 30 +++++++++++++++++ > 3 files changed, 82 insertions(+), 64 deletions(-) > > -- > Signature > > -- > libvir-list mailing list > libvir-list@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/libvir-list -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list