On Tuesday 23 June 2009, Avi Kivity wrote: > On 06/23/2009 12:47 AM, Andre Przywara wrote: > > KVM defaults to the hypervisor CPUID bit to be set, whereas pure QEMU > > clears it. On some occasions one want to set or clear it the other way > > round (for instance to get HyperV running inside a guest). > > Allow the default to be overridden on the command line and fix some > > whitespace damage on the way. > > It makes sense for qemu to set the hypervisor bit unconditionally. A > guest running under qemu is not bare metal.
I see no reason why a guest has to be told that it's running inside a VM. In principle an appropriately configured qemu should be indistinguishable from real hardware. In practice it's technically infeasible to cover absolutely everything, but if we set this bit we're not even trying. I have no objection to the bit being set by default for the QEMU CPU types. Paul -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
