Re: [libvirt] [PATCH 2/5] Add virNodeDeviceAttach()/ReAttach()/Reset() APIs

> > I think the attach/detach functions should be in the nodedev > > driver too, because they're not really part of the HV functionality. > > On modern Linux kernels, both Xen & KVM (and any other users) have > > the same pci-stub.ko code for managed driver binding. On older Xen > > kernels, there is the functionally equivalent pci-back.ko. > > Sure, but the logic to choose between pci-stub vs. pci-back is HV > specific, right? No, its really kernel version depedant. On old Xen kernels it is always pci-back. On mainline KVM / pv_ops Xen kernels, it'll always be pci-stub There's no need for Xen's pci-back, now the generic pci-stub exists.