Re: [Xen-devel] Fwd: [PATCH RFC 3/4] x86/AMD: support further feature masking MSRs

[Aravind Gopalakrishnan <aravind.gopalakrishnan@xxxxxxx>]

> Newer AMD CPUs also allow masking CPUID leaf 6 ECX and CPUID leaf 7
> sub-leaf 0 EAX and EBX.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx <mailto:jbeulich@xxxxxxxx>>
>
> TBD:
> - Fam15M0x is documented to not have MSR C0011002 despite 
> CPUID[7,0].EBX != 0 from model 02
>   onwards, and contrary to what I see on the system I have access to 
> (which is model 02)
> - Fam12, Fam14, and Fam16 are documented to not have MSR C0011003 
> despite CPUID[6].ECX != 0
Fam10 too has cpuid[6].ecx != 0 but no MSR C0011003

> - Fam11 is documented to not even have MSR C0011004 and C0011005
I am still trying to get some clarity on this;
Shall let you know soon :)

-Aravind.


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