On Thu, 2014-08-14 at 16:22 +0800, Zhang Haoyu wrote: > Hi, all > I'm using VFIO to assign intel 82599 VF to VM, now I encounter a problem, > 82599 PF and its VFs belong to the same iommu_group, but I only want to assign some VFs to one VM, and some other VFs to another VM, ..., > so how to only unbind (part of) the VFs but PF? > I read the kernel doc vfio.txt, I'm not sure should I unbind all of the devices which belong to one iommu_group? > If so, because PF and its VFs belong to the same iommu_group, if I unbind the PF, its VFs also diappeared. > I think I misunderstand someting, > any advises? This occurs when the PF is installed behind components in the system that do not support PCIe Access Control Services (ACS). The IOMMU group contains both the PF and the VF because upstream transactions can be re-routed downstream by these non-ACS components before being translated by the IOMMU. Please provide 'sudo lspci -vvv', 'lspci -n', and kernel version and we might be able to give you some advise on how to work around the problem. Thanks, Alex -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
