1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * maximum APIC ID capability tests
4  *
5  * Copyright (C) 2022, Intel, Inc.
6  *
7  * Tests for getting/setting maximum APIC ID capability
8  */
9 
10 #include "kvm_util.h"
11 
12 #define MAX_VCPU_ID	2
13 
main(int argc,char * argv[])14 int main(int argc, char *argv[])
15 {
16 	struct kvm_vm *vm;
17 	int ret;
18 
19 	vm = vm_create_barebones();
20 
21 	/* Get KVM_CAP_MAX_VCPU_ID cap supported in KVM */
22 	ret = vm_check_cap(vm, KVM_CAP_MAX_VCPU_ID);
23 
24 	/* Try to set KVM_CAP_MAX_VCPU_ID beyond KVM cap */
25 	ret = __vm_enable_cap(vm, KVM_CAP_MAX_VCPU_ID, ret + 1);
26 	TEST_ASSERT(ret < 0,
27 		    "Setting KVM_CAP_MAX_VCPU_ID beyond KVM cap should fail");
28 
29 	/* Set KVM_CAP_MAX_VCPU_ID */
30 	vm_enable_cap(vm, KVM_CAP_MAX_VCPU_ID, MAX_VCPU_ID);
31 
32 
33 	/* Try to set KVM_CAP_MAX_VCPU_ID again */
34 	ret = __vm_enable_cap(vm, KVM_CAP_MAX_VCPU_ID, MAX_VCPU_ID + 1);
35 	TEST_ASSERT(ret < 0,
36 		    "Setting KVM_CAP_MAX_VCPU_ID multiple times should fail");
37 
38 	/* Create vCPU with id beyond KVM_CAP_MAX_VCPU_ID cap*/
39 	ret = __vm_ioctl(vm, KVM_CREATE_VCPU, (void *)MAX_VCPU_ID);
40 	TEST_ASSERT(ret < 0, "Creating vCPU with ID > MAX_VCPU_ID should fail");
41 
42 	kvm_vm_free(vm);
43 	return 0;
44 }
45