Libxc code to get MTRR memory type for physical address pa

[Razvan Cojocaru <rzvncj@gmail.com>]

Hello,

what would be the libxc-based equivalent of get_mtrr_type(struct 
mtrr_state *m, paddr_t pa) (from xen/arch/x86/hvm/mtrr.c)?

I've searched the source code and found this:

struct hvm_hw_mtrr {
#define MTRR_VCNT 8
#define NUM_FIXED_MSR 11
     uint64_t msr_pat_cr;
     /* mtrr physbase & physmask msr pair*/
     uint64_t msr_mtrr_var[MTRR_VCNT*2];
     uint64_t msr_mtrr_fixed[NUM_FIXED_MSR];
     uint64_t msr_mtrr_cap;
     uint64_t msr_mtrr_def_type;
};

in xen/include/public/arch-x86/hvm/save.h. I can retrieve that using
xc_domain_hvm_getcontext_partial(), but what would the the best way to 
get the uint8_t result, for a given 'pa', that get_mtrr_type() returns?

Thanks,
Razvan Cojocaru