extern unsigned long get_phys_to_machine(unsigned long pfn);
-extern void set_phys_to_machine(unsigned long pfn, unsigned long mfn);
+extern bool set_phys_to_machine(unsigned long pfn, unsigned long mfn);
static inline unsigned long pfn_to_mfn(unsigned long pfn)
{
+ unsigned long mfn;
+
if (xen_feature(XENFEAT_auto_translated_physmap))
return pfn;
- return get_phys_to_machine(pfn) & ~FOREIGN_FRAME_BIT;
+ mfn = get_phys_to_machine(pfn);
+
+ if (mfn != INVALID_P2M_ENTRY)
+ mfn &= ~FOREIGN_FRAME_BIT;
+
+ return mfn;
}
static inline int phys_to_machine_mapping_valid(unsigned long pfn)