paravirt_nop
pv_ops.cpu.io_delay = paravirt_nop;
.wait = paravirt_nop,
.kick = paravirt_nop,
.cpu.alloc_ldt = paravirt_nop,
.cpu.free_ldt = paravirt_nop,
.cpu.start_context_switch = paravirt_nop,
.cpu.end_context_switch = paravirt_nop,
.mmu.exit_mmap = paravirt_nop,
.mmu.notify_page_enc_status_changed = paravirt_nop,
.mmu.pgd_free = paravirt_nop,
.mmu.alloc_pte = paravirt_nop,
.mmu.alloc_pmd = paravirt_nop,
.mmu.alloc_pud = paravirt_nop,
.mmu.alloc_p4d = paravirt_nop,
.mmu.release_pte = paravirt_nop,
.mmu.release_pmd = paravirt_nop,
.mmu.release_pud = paravirt_nop,
.mmu.release_p4d = paravirt_nop,
.mmu.enter_mmap = paravirt_nop,
.enter = paravirt_nop,
.leave = paravirt_nop,
.flush = paravirt_nop,
pv_ops.cpu.load_tr_desc = paravirt_nop;
pv_ops.irq.irq_disable = __PV_IS_CALLEE_SAVE(paravirt_nop);