[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-users] Re: PCI Passthrough to VMX Guest
On 21 Mar 2006 15:46:27 +0000, M.A. Williamson <maw48@xxxxxxxxx> wrote: > Sorry, PCI passthrough to VMX guests isn't supported - the guest has to be > paravirt and be running the PCI frontend driver. > > The VMX spec does include some helpful features for passing PCI devices > through to a guest, and I'm sure it's possible to make it work - in > principle. I don't know of anyone actually planning to hack on it though > :-( > > However, there are plans to improve the display performance for VMX guests, > so you should find the virtual framebuffer will improve in future releases. > I understand that using rdesktop in domain0 to connect to the guest also > works very well and provides quite snappy UI performance. Hi Mark That's too bad that it's not supported. It might be a good idea to drop a note in the driver domains/PCI passthrough section of the docs :) I just got rdesktop going on here yesterday after having a heck of a time trying to get the network working. Apparently having an ethernet device driven by the sky2 driver attached to a bridge makes the kernel rather unhappy right now! I'll confirm that about rdesktop, it is, as you say, quite snappy. Thanks for clearing this up for me! Dave > > Cheers, > mark > > On Mar 21 2006, David Goodlad wrote: > > >Hi everyone > > > >I've finally got my VMX guest working great (WinXP Pro) on here. > >However, I've got one more thing that I'd like to do. I have a > >secondary PCI-E video card that I want to pass through to the VM. I > >am using xen-unstable, so I know passthru is available... > > > >I have 2 graphics cards installed: an old 4MB PCI SiS 6326, and a > >PCI-E Geforce 6200. The PCI card is initialized first by the BIOS, so > >it is the only one being used by Xen afaict. I have setup my kernel > >cmdline options to include: > > > >pciback.hide=(06:00.0) > > > >06:00.0 is the address reported by lspci for the nVidia card. I've > >also got a line in my vmx guest's config: > > > >pci = [ '06:00.0' ] > > > >I still see the device in lspci (I suspect that I shouldn't here!). I > >can't get Windows to see the device at all, either. > > > >Anyone have any idea what could be preventing the device from being > >hidden? Is pci passthru supposed to work with VMX guests (ones w/o > >the pci frontend)? > > > >Thanks! > >Dave > > > >-- > >Dave Goodlad > >dgoodlad@xxxxxxxxx or dave@xxxxxxxxxx > >http://david.goodlad.ca/ > > > >_______________________________________________ > >Xen-users mailing list > >Xen-users@xxxxxxxxxxxxxxxxxxx > >http://lists.xensource.com/xen-users > > > -- Dave Goodlad dgoodlad@xxxxxxxxx or dave@xxxxxxxxxx http://david.goodlad.ca/ _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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