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Toro
Asked: 2012-10-13 00:59:44 +0800 CST

Coreinfo reports i7-3770 CPU doesn't support EPT (aka SLAT) and VMX

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Here is the output I get when I run coreinfo:

Coreinfo v3.05 - Dump information on system CPU and memory topology
Copyright (C) 2008-2012 Mark Russinovich
Sysinternals - www.sysinternals.com

Note: Coreinfo must be executed on a system without a hypervisor running for
accurate results.

Intel(R) Core(TM) i7-3770 CPU @ 3.40GHz
Intel64 Family 6 Model 58 Stepping 9, GenuineIntel
HYPERVISOR      *       Hypervisor is present
VMX             -       Supports Intel hardware-assisted virtualization
EPT             -       Supports Intel extended page tables (SLAT)

According to Intel the CPU does have VMX and EPT support. Why is it not showing up in coreinfo?

virtualization

2 Answers

  1. You are looking at a virtual CPU since you are running the program from inside a VM. The virtualization itself is not virtualizable, so while the physical CPU has these features, the virtual CPU presented to the VM does not.

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  2. Are your sure these options are not disabled in the Bios ?

    Also: You have a Hypervisor running so the output of CoreInfo may not be reliable. That warning printed by the program isn't there for nothing. I have seen it mis-report the real config on systems with hypervisors (Hyper-V, VmWare, VirtualBox) before.

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