XPADDR 85 include/asm-x86/xen/page.h return XPADDR(PFN_PHYS((u64)mfn_to_pfn(PFN_DOWN(machine.maddr))) | offset); XPADDR 121 include/asm-x86/xen/page.h #define virt_to_machine(v) (phys_to_machine(XPADDR(__pa(v))))