missing_mfn       565 arch/x86/xen/p2m.c 			unsigned long missing_mfn;
missing_mfn       575 arch/x86/xen/p2m.c 			missing_mfn = virt_to_mfn(p2m_mid_missing_mfn);
missing_mfn       577 arch/x86/xen/p2m.c 			old_mfn = cmpxchg(top_mfn_p, missing_mfn, mid_mfn_mfn);
missing_mfn       578 arch/x86/xen/p2m.c 			if (old_mfn != missing_mfn) {