int kvm_vm_ioctl_check_extension()

in kvm/vm.c [52:86]

• 33 lines of code
• 14 McCabe index (conditional complexity)

int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
{
	int r;

	switch (ext) {
	case KVM_CAP_IOEVENTFD:
	case KVM_CAP_DEVICE_CTRL:
	case KVM_CAP_USER_MEMORY:
	case KVM_CAP_SYNC_MMU:
	case KVM_CAP_DESTROY_MEMORY_REGION_WORKS:
	case KVM_CAP_ONE_REG:
	case KVM_CAP_READONLY_MEM:
	case KVM_CAP_MP_STATE:
	case KVM_CAP_IMMEDIATE_EXIT:
		r = 1;
		break;
	case KVM_CAP_NR_VCPUS:
		r = min_t(unsigned int, num_online_cpus(), KVM_MAX_VCPUS);
		break;
	case KVM_CAP_MAX_VCPUS:
		r = KVM_MAX_VCPUS;
		break;
	case KVM_CAP_NR_MEMSLOTS:
		r = KVM_USER_MEM_SLOTS;
		break;
	case KVM_CAP_VM_GPA_BITS:
		r = kvm_riscv_stage2_gpa_bits();
		break;
	default:
		r = 0;
		break;
	}

	return r;
}