1 /* 2 * This file and its contents are supplied under the terms of the 3 * Common Development and Distribution License ("CDDL"), version 1.0. 4 * You may only use this file in accordance with the terms of version 5 * 1.0 of the CDDL. 6 * 7 * A full copy of the text of the CDDL should have accompanied this 8 * source. A copy of the CDDL is also available via the Internet at 9 * http://www.illumos.org/license/CDDL. 10 */ 11 12 /* 13 * Copyright 2022 Oxide Computer Company 14 */ 15 16 #include <stdio.h> 17 #include <unistd.h> 18 #include <stdlib.h> 19 #include <strings.h> 20 #include <libgen.h> 21 #include <assert.h> 22 23 #include <sys/types.h> 24 #include <sys/sysmacros.h> 25 #include <sys/debug.h> 26 #include <sys/vmm.h> 27 #include <sys/vmm_dev.h> 28 #include <vmmapi.h> 29 30 #include "in_guest.h" 31 32 static const struct vcpu_cpuid_entry test_entries[] = { 33 { 34 .vce_function = 0, 35 .vce_eax = 5, 36 .vce_ebx = 0x74737552, 37 .vce_edx = 0x4f206465, 38 .vce_ecx = 0x65646978, 39 }, 40 /* basic "std" leaf */ 41 { 42 .vce_function = 1, 43 .vce_eax = 0x100, 44 }, 45 46 /* skip 2 for a hole */ 47 48 /* leaf with index matching */ 49 { 50 .vce_function = 3, 51 .vce_index = 0, 52 .vce_flags = VCE_FLAG_MATCH_INDEX, 53 .vce_eax = 0x300, 54 }, 55 { 56 .vce_function = 3, 57 .vce_index = 1, 58 .vce_flags = VCE_FLAG_MATCH_INDEX, 59 .vce_eax = 0x301, 60 }, 61 62 /* leaf with index matching and a hole */ 63 { 64 .vce_function = 4, 65 .vce_index = 0, 66 .vce_flags = VCE_FLAG_MATCH_INDEX, 67 .vce_eax = 0x400, 68 }, 69 { 70 .vce_function = 4, 71 .vce_index = 2, 72 .vce_flags = VCE_FLAG_MATCH_INDEX, 73 .vce_eax = 0x402, 74 }, 75 76 /* terminal "std" leaf */ 77 { 78 .vce_function = 5, 79 .vce_eax = 5, 80 .vce_ebx = 5, 81 .vce_edx = 5, 82 .vce_ecx = 5, 83 }, 84 85 /* base "extended" leaf */ 86 { 87 .vce_function = 0x80000000, 88 .vce_eax = 0x80000001, 89 }, 90 /* index-match "extended" leaves */ 91 { 92 .vce_function = 0x80000001, 93 .vce_index = 0x0, 94 .vce_flags = VCE_FLAG_MATCH_INDEX, 95 .vce_eax = 0x8000, 96 }, 97 { 98 .vce_function = 0x80000001, 99 .vce_index = 0x1, 100 .vce_flags = VCE_FLAG_MATCH_INDEX, 101 .vce_eax = 0x8001, 102 }, 103 }; 104 105 int 106 main(int argc, char *argv[]) 107 { 108 const char *test_suite_name = basename(argv[0]); 109 struct vmctx *ctx = NULL; 110 int err; 111 112 ctx = test_initialize(test_suite_name); 113 114 err = test_setup_vcpu(ctx, 0, MEM_LOC_PAYLOAD, MEM_LOC_STACK); 115 if (err != 0) { 116 test_fail_errno(err, "Could not initialize vcpu0"); 117 } 118 119 120 /* Start with test data using Intel-style fallback */ 121 int vmfd = vm_get_device_fd(ctx); 122 123 struct vm_vcpu_cpuid_config cfg = { 124 .vvcc_vcpuid = 0, 125 .vvcc_flags = VCC_FLAG_INTEL_FALLBACK, 126 .vvcc_nent = ARRAY_SIZE(test_entries), 127 /* We trust the ioctl not to alter this const value */ 128 .vvcc_entries = (struct vcpu_cpuid_entry *)test_entries, 129 }; 130 err = ioctl(vmfd, VM_SET_CPUID, &cfg); 131 if (err != 0) { 132 test_fail_errno(err, "ioctl(VM_SET_CPUID) failed"); 133 } 134 135 struct vm_entry ventry = { 0 }; 136 struct vm_exit vexit = { 0 }; 137 138 do { 139 const enum vm_exit_kind kind = 140 test_run_vcpu(ctx, 0, &ventry, &vexit); 141 switch (kind) { 142 case VEK_REENTR: 143 break; 144 case VEK_TEST_PASS: 145 test_pass(); 146 break; 147 case VEK_TEST_FAIL: 148 test_fail_msg("failed result %rip: %x", vexit.rip); 149 break; 150 case VEK_UNHANDLED: { 151 uint32_t val; 152 if (vexit_match_inout(&vexit, false, IOP_TEST_VALUE, 4, 153 &val)) { 154 /* 155 * The payload has requested switch to AMD-style 156 * fallback to run the second half of the test. 157 */ 158 cfg.vvcc_flags = 0; 159 err = ioctl(vmfd, VM_SET_CPUID, &cfg); 160 if (err != 0) { 161 test_fail_errno(err, 162 "ioctl(VM_SET_CPUID) failed"); 163 } 164 ventry_fulfill_inout(&vexit, &ventry, 0); 165 } else { 166 test_fail_vmexit(&vexit); 167 } 168 break; 169 } 170 171 default: 172 test_fail_vmexit(&vexit); 173 break; 174 } 175 } while (true); 176 } 177