Il 18/09/2014 17:44, Andy Lutomirski ha scritto: > Slight correction: QEMU/KVM has optional support for Hyper-V feature > enumeration. Ideally the RNG seed mechanism would be enabled by > default, but I don't know whether the QEMU maintainers would be okay > with enabling the Hyper-V cpuid mechanism in a default configuration. Some guests cannot find the KVM leaves at 0x40000100, so it wouldn't be great. And I also don't know what VMware folks would think, but I think they would be even less thrilled than me. Note that even if there is no well-defined CPUID leaf, and the main detection mechanism is #GP, each hypervisor is free to define a CPUID bit of its own. However, if it's going to be an architectural (Intel-defined) MSR, I think the right place for a feature bit is in the low leaves (like EAX=7, ECX=0). Paolo _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
