Host CPID, Geast CPUID and UserCPUID / what are they?

Posted by amir.csco on Server Fault See other posts from Server Fault or by amir.csco
Published on 2014-08-22T10:04:13Z Indexed on 2014/08/22 10:21 UTC
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i found out that there are some IDs associated to the CPUIDs in vmx file of each virtual machine, these IDs are;

hostCPUID.{Num}

hostCPUID.80000001

guestCPUID.{Num}

guestCPUID.80000001

userCPUID.{Num}

userCPUID.80000001

i had some examination and search and i found out that guestCPUID and userCPUID are the same but hostCPUID always is different, Also i realized that these IDs are 32 hexadecimal characters that contains EDX, EAX, ECX and EDX

i just want to know why hostCPUID is different from two other IDs??

and what is the different between these format of IDs and another format that explain in VMware documents ( cpuid.{Num}.edx or cpuid.{Num}.eax ) that written in binary codes not hexadecimal??

also i need to know why there are no CPUIDs in vmx file of some virtual appliance that often are available in OVF/OVA format and we can just deploy it??

Best Regards,

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