FOREIGN_FRAME_BIT 46 arch/x86/include/asm/xen/page.h #define FOREIGN_FRAME(m) ((m) | FOREIGN_FRAME_BIT) FOREIGN_FRAME_BIT 180 arch/x86/include/asm/xen/page.h mfn &= ~(FOREIGN_FRAME_BIT | IDENTITY_FRAME_BIT); FOREIGN_FRAME_BIT 368 arch/x86/xen/mmu_pv.c mfn &= ~(FOREIGN_FRAME_BIT | IDENTITY_FRAME_BIT); FOREIGN_FRAME_BIT 757 arch/x86/xen/p2m.c if (mfn == INVALID_P2M_ENTRY || !(mfn & FOREIGN_FRAME_BIT)) {