On Wed, Jul 16, 2014 at 09:13:23AM -0700, H. Peter Anvin wrote: > On 07/16/2014 09:08 AM, Paolo Bonzini wrote: > > Il 16/07/2014 18:03, H. Peter Anvin ha scritto: > >> I suggested emulating RDRAND *but not set the CPUID bit*. We already > >> developed a protocol in KVM/Qemu to enumerate emulated features (created > >> for MOVBE as I recall), specifically to service the semantic "feature X > >> will work but will be substantially slower than normal." > > > > But those will set the CPUID bit. There is currently no way for KVM > > guests to know if a CPUID bit is real or emulated. > > > > OK, so there wasn't any protocol implemented in the end. I sit corrected. > That protocol that was implemented is between qemu and kvm, not kvm and a guest. -- Gleb. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
