On Thu, Sep 18, 2014 at 3:07 PM, Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote: > So, as a concrete straw-man: > > CPUID leaf 0x48000000 would return a maximum leaf number in EAX (e.g. > 0x48000001) along with a signature value (e.g. "CrossHVPara\0") in > EBX, ECX, and EDX. > > CPUID 0x48000001.EAX would contain an MSR number to read to get a > random number if supported and zero if not supported. > > Questions: > > 1. Can we use a fixed MSR number? This would be a little bit simpler, > but it would depend on getting a wider MSR range from Intel. > Why do you need a wider MSR range if you always detect the feature by CPUID.0x48000001? Or are you still trying to avoid the detection by CPUID? -- Jun Intel Open Source Technology Center -- 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
