[Xen-devel] Libxc code to get MTRR memory type for physical address pa

[Razvan Cojocaru <rzvncj@xxxxxxxxx>]

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

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