Re: [PATCH] libxc: Add xc_domain_hvm_get_mtrr_type() call

[Razvan Cojocaru <rzvncj@gmail.com>]

>> Ah - I see your concern.  Yes - it might well be different.  Is this
>> information passed in an HVM save record?  It does not appear to be
>> associated with the MTRR HVM save record.
>
> No , this is the internal state not the save record but Razvan is
> implementing the same logic in libxc which must necessarily be based on
> the hvm saved state only and not the internal emulation state.

Exactly, and all I need extra an extra variable in the save record (or 
simply a single bit in a safe place in one of the existing ones), 
telling me if the MTRRs are overlapped or not. The CPUID code is just a 
part of the logic that finds this out in the hypervisor; and 
specifically it is a part that's better _left_in_ the hypervisor. That 
is in fact what I was trying to say a few messages ago, when I called 
the cpuid_eax() function the tricky part. :)

Do we agree that a bool_t overlapped should be added to struct 
hvm_hw_mtrr for this case?

Thanks,
Razvan Cojocaru