int kvm_uncoalesce_mmio_region(target_phys_addr_t start, ram_addr_t size) { int ret = -ENOSYS; KVMState *s = kvm_state; if (s->coalesced_mmio) { struct kvm_coalesced_mmio_zone zone; zone.addr = start; zone.size = size; ret = kvm_vm_ioctl(s, KVM_UNREGISTER_COALESCED_MMIO, &zone); } return ret; }