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 #include "test_defs.h" 32 33 const char *strict_name = "STRICT_APICV"; 34 35 static bool 36 strict_apicv(void) 37 { 38 const char *strict_val; 39 40 if ((strict_val = getenv(strict_name)) != NULL) { 41 if (strlen(strict_val) != 0 && 42 strcmp(strict_val, "0") != 0) { 43 return (true); 44 } 45 } 46 return (false); 47 } 48 49 int 50 main(int argc, char *argv[]) 51 { 52 const char *test_suite_name = basename(argv[0]); 53 struct vmctx *ctx = NULL; 54 int err; 55 56 ctx = test_initialize(test_suite_name); 57 58 err = test_setup_vcpu(ctx, 0, MEM_LOC_PAYLOAD, MEM_LOC_STACK); 59 if (err != 0) { 60 test_fail_errno(err, "Could not initialize vcpu0"); 61 } 62 63 /* 64 * Although x2APIC should be off by default, make doubly sure by 65 * explicitly setting it so. 66 */ 67 err = vm_set_x2apic_state(ctx, 0, X2APIC_DISABLED); 68 if (err != 0) { 69 test_fail_errno(err, "Could not disable x2apic on vcpu0"); 70 } 71 72 struct vm_entry ventry = { 0 }; 73 struct vm_exit vexit = { 0 }; 74 75 do { 76 const enum vm_exit_kind kind = 77 test_run_vcpu(ctx, 0, &ventry, &vexit); 78 switch (kind) { 79 case VEK_REENTR: 80 break; 81 case VEK_TEST_PASS: 82 test_pass(); 83 break; 84 case VEK_TEST_FAIL: 85 test_fail_msg("payload signaled failure"); 86 break; 87 case VEK_UNHANDLED: 88 /* 89 * Not all APICv-accelerated accesses are properly 90 * handled by the in-kernel emulation today. 91 * (See: illumos #13847). 92 * 93 * To allow this test to be useful on systems without 94 * APICv, we suppress such failures unless explicitly 95 * strict handling is requested. 96 */ 97 if (vexit.exitcode == VM_EXITCODE_VMX && 98 (vexit.u.vmx.exit_reason == 44 || 99 vexit.u.vmx.exit_reason == 56)) { 100 if (strict_apicv()) { 101 test_fail_vmexit(&vexit); 102 } 103 (void) fprintf(stderr, 104 "Ignoring APICv access issue\n" 105 "If strictness is desired, " 106 "run with %s=1 in env\n", strict_name); 107 test_pass(); 108 } 109 test_fail_vmexit(&vexit); 110 break; 111 default: 112 test_fail_vmexit(&vexit); 113 break; 114 } 115 } while (true); 116 } 117