On 05/01/2014 11:53 AM, Andy Lutomirski wrote: > > A CPUID leaf or an MSR advertised by a CPUID leaf has another > advantage: it's easy to use in the ASLR code -- I don't think there's > a real IDT, so there's nothing like rdmsr_safe available. It also > avoids doing anything complicated with the boot process to allow the > same seed to be used for ASLR and random.c; it can just be invoked > twice on boot. > At that point we are talking an x86-specific interface, and so we might as well simply emulate RDRAND (urandom) and RDSEED (random) if the CPU doesn't support them. I believe KVM already has a way to report CPUID features that are "emulated but supported anyway", i.e. they work but are slow. > What's the right forum for this? This thread is probably not it. Change the subject line? -hpa -- 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
