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Xen 3.0 Virtualization Interface Guide
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4.1.3 arch_shared_info_t

On x86, the arch_shared_info_t is defined as follows (from xen/public/arch-x86_32.h):

typedef struct arch_shared_info {
    unsigned long max_pfn;                  /* max pfn that appears in table */
    /* Frame containing list of mfns containing list of mfns containing p2m. */
    unsigned long pfn_to_mfn_frame_list_list; 
} arch_shared_info_t;

max_pfn
The maximum PFN listed in the physical-to-machine mapping table (P2M table).
pfn_to_mfn_frame_list_list
Machine address of the frame that contains the machine addresses of the P2M table frames.

Xen 3.0 Virtualization Interface Guide
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