Hello Sean, Sorry for keep bothering you, but I am a bit stuck with fixing one kvm-unit-tests that fails on Skylake bare-metal. The reason for the failure is that I assumed that APIC_CMCI (MSR 0x82f) support is reported in MSR_IA32_MCG_CAP[10]. However, on my machine, I get: MSR_IA32_MCG_CAP (0x179) = 0x7000816 And although MSR_IA32_MCG_CAP[10] is clear, APIC_CMCI is still accessible. Is there a way to determine whether LVT_CMCI is supported on a CPU? Thanks, Nadav