> > These bit definitions are use for emulate MSRs read/write for KVM. For > > example, IA32_RTIT_CTL.FabricEn[bit 6] is available only when > > CPUID.(EAX=14H, ECX=0):ECX[bit 3] = 1. If KVM guest try to set this > > bit with CPUID.(EAX=14H, ECX=0):ECX[bit3] = 0 a #GP would be injected > > to KVM guest. > > Do we have anything in the guest that this feature will work with? >
It depend on PT driver. KVM need to do some security check if kvm guest (maybe linux or other os) try to set any bits of these MSRs. Thanks, Luwei Kang