Zrubi:
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On 12/23/18 9:34 PM, Demi M. Obenour wrote:
Someone I know is interested in using QubesOS. However, they are
also a gamer: if they could not have a Windows VM with access to a
dedicated graphics card for use by games, then QubesOS is not an
option for them.
Short answer:
Qubes OS is not an option for them.
The risk part would come only after this feature exists in practice ;)
Search back for the details.
What Zrubi said, really. Not a practical solution at this point. If at
some point it works better, it seems to me too if the secondary GPU can
be blocked from ever seeing dom0 and vice versa, it could be passed
through without too large an attack surface increase. Assuming here
Qubes/Xen/IOMMU can restrict overly large BARs, but that's any PCIe device.
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