Basic graphics passthrough works in xen-unstable, we are working on iGFX passthrough now (Xen Client already has iGFX passthrough support). After complete it, we plan to do the same in KVM. Fede said he is porting xen code to kvm.I think you can also think how to implement it in kvm cleanly. Actually there are many aspects can be enhanced. For example, copy/load video BIOS to guest, easy use for various cases (primary/secondary graphics in host/guest), etc. Regards, Weidong Jurgen Baier wrote: > Is there anything I can do to help with this feature. It is probably > one of the most sort after requests. I have been toying with the Xen > component and would love to see this in KVM > > -----Original Message----- > From: kvm-owner@xxxxxxxxxxxxxxx [mailto:kvm-owner@xxxxxxxxxxxxxxx] On > Behalf Of Han, Weidong > Sent: Friday, 6 November 2009 11:37 AM > To: 'Fede'; 'Asdo' > Cc: 'kvm@xxxxxxxxxxxxxxx' > Subject: RE: PCI Passthrough and graphic cards ... > > Fede wrote: >> On Wed, Nov 4, 2009 at 11:00, Asdo <asdo@xxxxxxxxxxxxx> wrote: >>> In case of a single video card in the system, it would be wonderful >>> to be able to suddenly give the video card as passthrough to the >>> guest removing it from the host. Since the video card internal state >>> is unknown to the guest, the guest should then re-initialize it with >>> some help of a guest driver. For example it could act like resuming >>> the graphics from standby. Giving the video card back to the host >>> would need some kind of a hotkey. While the video card is at the >>> host, the guest graphics would be invisible (not windowed). >>> Alternatively the guest could be frozen. >>> >>> Would that be anyhow feasible? >>> >>> That would be just great for the people who use Windows for >>> videogames >>> >>> Thank you >>> Asdo >> >> I'm currently working in this as a research project at university. >> I'll have more information soon. But basically, the problem is that >> graphic cards have BIOS. In order to make this work, graphic card >> must be reseted, just like it happens whenever a computer is powered >> up. >> > > Yes, need to reset the graphics card and re-execute video BIOS in > guest. > > Regards, > Weidong > >> I'm currently porting xen patch into kvm. >> >> If someone has more information, please, let me know. >> >> Thanks >> Federico >> >>> >>> Han, Weidong wrote: >>>> >>>> Passthrough graphic card to guest can satisfy your requirement. >>>> Currently it's not supported in kvm, but we have a plan to support >>>> it, but you still need wait for a while. >>>> >>>> I think sharing the host graphics power is not easy to implement. >>>> >>>> Regards, >>>> Weidong >>> >>> -- >>> 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 -- 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
