On 2012-07-18 07:45, Martin Wolf wrote: > Hello, > > i was able to passthrough an AMD 7870 videocard to my win7 guest machine. Would you add it to http://www.linux-kvm.org/page/VGA_device_assignment? > my host is ubuntu 12.04 with stock kernel. > my system contains: > dq67sw q67 mainboard > i5-2400s cpu > sapphire 7870 amd videocard > xonar d2x (problems to passthrough) > > for full functionality i just needed two options > > - kernel : iommu=on > - kvm module: ignore_msrs=1 > (if i would not set it the guest os would crash with a bluescreen) Can you report (=> kernel log) which MSRs are unknown to KVM? > > the unigine benchmark ran flawlessly > also the benchmark included in windows gave my videocard > similar values (7.7) comparable with my native win7 (7.9) > > > now to my questions... > 1. is it possible to reset the videocard properly to be able to > reboot the vm? Which versions of kernel and qemu-kvm are involved via your distro? Can you retry with latest Linux (3.5-rcX) / lastest qemu-kvm? Maybe something got fixed meanwhile. In general, there are many adapters that require special procedures to perform resets. This one may fall into that category as well. > > 2. the xonar d2x is a very nice audio card, it would be very handy > to be able to use it in the vm. in my oppinion the card is a > d2 with a pci-e to pci bridge. > i tried to passthrough the card alone and with the pci-bridge > that was shown though lspci, but i had no success. > maybe you guys here have an idea on that topic? Any further details about the error? Does the adapter work with a Linux guest or provide more information that way? Jan -- Siemens AG, Corporate Technology, CT RTC ITP SDP-DE Corporate Competence Center Embedded Linux -- 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
