[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-users] Some questions about PCI-passthrough for HVM(Non-IOMMU)
2007/10/2, Henning Sprang <henning_sprang@xxxxxx>: > 陈诚 wrote: > > Hello, > > I saw some patches about PCI-passthrough for HVM(non-IOMMU) > > and I am interested in it. I want to assign my graphics card(nVidia > > GeForce 7900GS) to an > > HVM domain (Vista) in order to run 3D-intensive work(for example, 3D-games). > > What I want to ask is that is it really possible to pass the graphics > > card to HVM domain running Vista now? That is, have anyone ever > > successfully > > > > passed a modern graphics card to a Vista HVM? Since the graphics card > > is a kind of complicated device. Are there any technical problems with > > the passthrough > > > > of a modern graphics card? > > I tried that once and fiddled around with it, but wasn't really > successfull (long time ago, can't remember the exact problems). > > I'm not sure anymore, if I tried with a machine with one or two cards. > > Sure, you have to hide the PCI/AGP port from the dom0 - with using one > card only, this means you have _no_ graphics output and you have to run > headless. > So, having two cards might make it easier, but I don't know if it's even > possible at all. > > Henning > I think the problem is really caused by the 0-12M remapping on x86-32. It even corrupted my ext3 file system once. The SATA controller seems allocating DMA buffers in that area. I am examing the code and trying to make this problem clear. I tried to hide the graphics card on a machine with one graphics card, but it was unseccessful, after the pciback binding(in the /etc/rc.local, it happens after the last service started), the screen stopped reacting and stayed there forever. I also tried to pass the pci NIC, this time it works. But since the nativedom can't boot, I still can't see the passthrough effect. ConcreteChen@xxxxxxxxx _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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