RE: [PATCH v4 06/17] PCI: add SIOV and IMS capability detection

Luck, Tony
2020-11-13T16:12:46Z

> Of course is this not only an x86 problem. Every architecture which
> supports virtualization has the same issue. ARM(64) has no way to tell
> for sure whether the machine runs bare metal either. No idea about the
> other architectures.

Sounds like a hypervisor problem. If the VMM provides perfect emulation
of every weird quirk of h/w, then it is OK to let the guest believe that it is
running on bare metal.

If it isn't perfect, then it should make sure the guest knows *for sure*, so that
the guest can take appropriate actions to avoid the sharp edges.

-Tony