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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * maximum APIC ID capability tests4 *5 * Copyright (C) 2022, Intel, Inc.6 *7 * Tests for getting/setting maximum APIC ID capability8 */9 10#include "kvm_util.h"11 12#define MAX_VCPU_ID 213 14int 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 /* Test BOOT_CPU_ID interaction (MAX_VCPU_ID cannot be lower) */30 if (kvm_has_cap(KVM_CAP_SET_BOOT_CPU_ID)) {31 vm_ioctl(vm, KVM_SET_BOOT_CPU_ID, (void *)MAX_VCPU_ID);32 33 /* Try setting KVM_CAP_MAX_VCPU_ID below BOOT_CPU_ID */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 below BOOT_CPU_ID should fail");37 }38 39 /* Set KVM_CAP_MAX_VCPU_ID */40 vm_enable_cap(vm, KVM_CAP_MAX_VCPU_ID, MAX_VCPU_ID);41 42 /* Try to set KVM_CAP_MAX_VCPU_ID again */43 ret = __vm_enable_cap(vm, KVM_CAP_MAX_VCPU_ID, MAX_VCPU_ID + 1);44 TEST_ASSERT(ret < 0,45 "Setting KVM_CAP_MAX_VCPU_ID multiple times should fail");46 47 /* Create vCPU with id beyond KVM_CAP_MAX_VCPU_ID cap */48 ret = __vm_ioctl(vm, KVM_CREATE_VCPU, (void *)MAX_VCPU_ID);49 TEST_ASSERT(ret < 0, "Creating vCPU with ID > MAX_VCPU_ID should fail");50 51 /* Create vCPU with bits 63:32 != 0, but an otherwise valid id */52 ret = __vm_ioctl(vm, KVM_CREATE_VCPU, (void *)(1L << 32));53 TEST_ASSERT(ret < 0, "Creating vCPU with ID[63:32] != 0 should fail");54 55 /* Create vCPU with id within bounds */56 ret = __vm_ioctl(vm, KVM_CREATE_VCPU, (void *)0);57 TEST_ASSERT(ret >= 0, "Creating vCPU with ID 0 should succeed");58 59 close(ret);60 kvm_vm_free(vm);61 return 0;62}63