virt/kvm/kvm_main.c

555 	on_lock_fn_t on_lock;
609 	/* A null handler is allowed if and only if on_lock() is provided. */
610 	if (WARN_ON_ONCE(IS_KVM_NULL_FN(range->on_lock) &&
649 				if (!IS_KVM_NULL_FN(range->on_lock))
650 					range->on_lock(kvm);
682 		.on_lock	= (void *)kvm_null_fn,
700 		.on_lock	= (void *)kvm_null_fn,
806 		.on_lock	= kvm_mmu_invalidate_begin,
882 		.on_lock	= kvm_mmu_invalidate_end,
2507 				if (!IS_KVM_NULL_FN(range->on_lock))
2508 					range->on_lock(kvm);
2549 		.on_lock = kvm_mmu_invalidate_begin,
2558 		.on_lock = kvm_mmu_invalidate_end,