zlacker

>>jfreax+(OP)
Does anyone know if PCI passthrough works so we can play games inside a windows vm? Some user already asked this on the mailing list but got no answer. [1]

[1] https://groups.google.com/forum/#!topic/qubes-devel/MfHy2jmX...

>>redtue+FA
Qubes uses Xen and thus PCI passthrough for gaming can be made to work through the same procedures necessary for any other Xen+Linux OS.

But PCI passthrough for gaming isn't a great fit for the Qubes security model: it requires trusting that the Windows guest cannot compromise the GPU you loan it, which makes it a much bigger risk than an ordinary AppVM.

>>wtalli+HB
I thought the PCI passthrough security model assumes that the guest does compromise the GPU, and the guest-controlled GPU is isolated from the rest of the system using the IOMMU.

Do you mean these controls are porous by design or are you talking about bugs in the IOMMU protections?