* Brian Jackson (iggy@xxxxxxxxxxx) wrote: > On Saturday 23 January 2010 05:20:49 Yigal Korman wrote: > > I'm trying to pass a second video card to a Windows 7 virtual machine > > with KVM, and I get the following error: > > KVM doesn't support assigning graphics cards to VMs yet. There are people > working on it afaik, but I don't know the progress. Right, so even if you figure out the issue below, there's still issue w/ the actual graphcis device funtioning properly in the guest. > > root@ubuntu-desktop:~# kvm -cpu qemu64 -hda /dev/sdb -cdrom /dev/cdrom > > -boot order=dc -m 2000 -usb -name Win7x64 -enable-kvm -device > > pci-assign,host=80:00.0 > > No IOMMU found. Unable to assign device "(null)" > > Failed to deassign device "(null)" : Invalid argument > > Error initializing device pci-assign > > " > > Now it look like I don't have VT-d, but I do, here is my cpuinfo: > > " VT-d is a chipset feature, not a CPU feature. <snip> > > I've enabled vt-d in the BIOS, and added this parameter to the kernel: > > "intel_iommu=on" Again, VT (or VT-x) isn't the same as VT-d. So to be sure, you can grep dmesg for DMAR and IOMMU to verify that the chipset actually has VT-d support, that it's enabled, and that it's not broken (there are quite a few broken BIOS out there that case the IOMMU to be unusable). thanks, -chris -- 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
