I was looking for a place where all the different makes and models of hosts with CPUs that support SLAT are listed. Didn't find it, so I have started this topic to capture them. Can you help fill it out?
With the announcement that
you can run Hyper-V on the Windows 8 client from BUILD, there has been a lot of new interest in this topic, because the Windows 8 client
requires SLAT. Running Hyper-V on Windows Server Developer Preview does *not* require SLAT.
SLAT (Second Level Address Translation) is a feature of the CPU. It is called “Rapid Virtualization Indexing (RVI)”, and has been called Extended Page Tables (EPT) by Intel and Nested Page Tables (NPT) by AMD. You can use Wikipedia to look up Intel Nehalem
and AMD NPT:
Every Core i3, i5 and i7 supports SLAT. You can look up the supported AMD versions at
KB article on AMD
The easiest way to check if your computer/processor is supporting SLAT is to execute in cmd:
At the end of the results there is a section "Hyper-V Requirements" which is showing 4 elements. All of them has to be "Yes" in order to install Hyper-V on Windows 8 (there is a SLAT element too).
As of Sep 1, 2011 Mark Russinovich has updated (V3) his utility
coreinfo.exe that you can use to detect EPT and NPT (SLAT) support on your CPU. Use the
coreinfo -v switch to list the features. An asterisk * next to a feature indicates that it is supported. A minus sign - indicates no support for that feature.
Note: Coreinfo must be executed on a system without a hypervisor running for accurate results.
Here's an example from my Samsung 900x:
Here is an example of a CPU that is NOT SLAT capable:
Alternatively, you can useWindows PowerShell to capture your specific CPU model:
PS C:\Windows\system32> gwmi win32_processor
Caption : AMD64 Family 16 Model 2 Stepping 3
DeviceID : CPU0
Manufacturer : AuthenticAMD
MaxClockSpeed : 2400
Name : AMD Phenom(tm) 9750B Quad-Core Processor
SocketDesignation : XU1 PROCESSOR
NOTE: Be sure to include the specific family/model/stepping since different processor revisions may have different feature sets.
Note Remember to check you BIOS settings. For example, VT-x has to be enabled before coreinfo.exe will tell you it's available.
Does your CPU support SLAT? List it here, it is the wiki way! Thanks in advance.
According to en.wikipedia.org/.../Extended_Page_Table Intel Core2 processors are NOT supported - while Core i3, i5, i7 among a few others are supported.
I just checked on my E5630 (higher then E5500) and it doesn't seem to have the support:
Coreinfo v3.0 - Dump information on system CPU and memory topology
Copyright (C) 2008-2011 Mark Russinovich
Sysinternals - www.sysinternals.com
Intel(R) Xeon(R) CPU E5630 @ 2.53GHz
Intel64 Family 6 Model 44 Stepping 2, GenuineIntel
HYPERVISOR * Hypervisor is present
VMX - Supports Intel hardware-assisted virtualization
EPT - Supports Intel extended page tables
I just checked my Dell R710 with Dual Intel X5680 Hexcore CPUs. Coreinfo shows VMX and EPT as NOT supported. I have a feeling it may be a BIOS or motherboard chipset issue as all literature on Intel's site seems to indicate that this CPU should be capable.
For E5600 series CPUs definitely check the BIOS settings.
On Intel branded server boards there are _a lot_ of different VT-x settings to go through.
Once enabled in the BIOS boot to the OS then shut down, pull the plugs, push and hold the power button for 15 seconds, then plug back in.
Once back into the OS verify again. The feature set should be good to go.
Also, make sure that the BIOS is up to date.
On a related note, does anyone know the import in relation to MS of Intel's VT-d (Directed I/O)? Intel fails to include it on a good number of its current Core i processors.