VirtualBox

source: vbox/trunk/src/VBox/HostDrivers/Support/testcase/tstInt.cpp@ 99443

Last change on this file since 99443 was 98103, checked in by vboxsync, 2 years ago

Copyright year updates by scm.
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1/* $Id: tstInt.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
2/** @file
3 * SUP Testcase - Test the interrupt gate feature of the support library.
4 */
5
6/*
7 * Copyright (C) 2006-2023 Oracle and/or its affiliates.
8 *
9 * This file is part of VirtualBox base platform packages, as
10 * available from https://www.virtualbox.org.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation, in version 3 of the
15 * License.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, see <https://www.gnu.org/licenses>.
24 *
25 * The contents of this file may alternatively be used under the terms
26 * of the Common Development and Distribution License Version 1.0
27 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28 * in the VirtualBox distribution, in which case the provisions of the
29 * CDDL are applicable instead of those of the GPL.
30 *
31 * You may elect to license modified versions of this file under the
32 * terms and conditions of either the GPL or the CDDL or both.
33 *
34 * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35 */
36
37
38/*********************************************************************************************************************************
39* Header Files *
40*********************************************************************************************************************************/
41#include <VBox/sup.h>
42#include <VBox/vmm/vmm.h>
43#include <VBox/vmm/gvmm.h>
44#include <VBox/vmm/vm.h>
45#include <iprt/errcore.h>
46#include <VBox/param.h>
47#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
48# include <iprt/asm-amd64-x86.h>
49#else
50# define ASMReadTSC RTTimeSystemNanoTS
51#endif
52#include <iprt/initterm.h>
53#include <iprt/stream.h>
54#include <iprt/string.h>
55#include <iprt/alloc.h>
56#include <iprt/time.h>
57#include <iprt/path.h>
58
59
60int main(int argc, char **argv)
61{
62 int rcRet = 0;
63 int i;
64 int rc;
65 int cIterations = argc > 1 ? RTStrToUInt32(argv[1]) : 32;
66 if (cIterations == 0)
67 cIterations = 64;
68
69 /*
70 * Init.
71 */
72 RTR3InitExe(argc, &argv, 0);
73 PSUPDRVSESSION pSession;
74 rc = SUPR3Init(&pSession);
75 rcRet += rc != 0;
76 RTPrintf("tstInt: SUPR3Init -> rc=%Rrc\n", rc);
77 char szFile[RTPATH_MAX];
78 if (!rc)
79 {
80 rc = RTPathExecDir(szFile, sizeof(szFile) - sizeof("/VMMR0.r0"));
81 }
82 char szAbsFile[RTPATH_MAX];
83 if (RT_SUCCESS(rc))
84 {
85 strcat(szFile, "/VMMR0.r0");
86 rc = RTPathAbs(szFile, szAbsFile, sizeof(szAbsFile));
87 }
88 if (RT_SUCCESS(rc))
89 {
90 /*
91 * Load VMM code.
92 */
93 RTERRINFOSTATIC ErrInfo;
94 rc = SUPR3LoadVMM(szAbsFile, RTErrInfoInitStatic(&ErrInfo));
95 if (RT_SUCCESS(rc))
96 {
97 /*
98 * Create a tiny dummy VM so we can do NOP calls into it using the fast I/O control path.
99 */
100 GVMMCREATEVMREQ CreateVMReq;
101 CreateVMReq.Hdr.u32Magic = SUPVMMR0REQHDR_MAGIC;
102 CreateVMReq.Hdr.cbReq = sizeof(CreateVMReq);
103 CreateVMReq.pSession = pSession;
104 CreateVMReq.pVMR0 = NIL_RTR0PTR;
105 CreateVMReq.pVMR3 = NULL;
106 CreateVMReq.cCpus = 1;
107 rc = SUPR3CallVMMR0Ex(NIL_RTR0PTR, NIL_VMCPUID, VMMR0_DO_GVMM_CREATE_VM, 0, &CreateVMReq.Hdr);
108 if (RT_SUCCESS(rc))
109 {
110 PVM pVM = CreateVMReq.pVMR3;
111 AssertRelease(RT_VALID_PTR(pVM));
112 AssertRelease(pVM->pVMR0ForCall == CreateVMReq.pVMR0);
113 AssertRelease(pVM->pSession == pSession);
114 AssertRelease(pVM->cCpus == 1);
115 pVM->enmVMState = VMSTATE_CREATED;
116 PVMR0 const pVMR0 = CreateVMReq.pVMR0;
117
118 rc = SUPR3SetVMForFastIOCtl(pVMR0);
119 if (!rc)
120 {
121 /*
122 * Call VMM code with invalid function.
123 */
124 for (i = cIterations; i > 0; i--)
125 {
126 rc = SUPR3CallVMMR0(pVMR0, NIL_VMCPUID, VMMR0_DO_SLOW_NOP, NULL);
127 if (rc != VINF_SUCCESS)
128 {
129 RTPrintf("tstInt: SUPR3CallVMMR0 -> rc=%Rrc i=%d Expected VINF_SUCCESS!\n", rc, i);
130 rcRet++;
131 break;
132 }
133 }
134 RTPrintf("tstInt: Performed SUPR3CallVMMR0 %d times (rc=%Rrc)\n", cIterations, rc);
135
136 /*
137 * The fast path.
138 */
139 if (rc == VINF_SUCCESS)
140 {
141 RTTimeNanoTS();
142 uint64_t StartTS = RTTimeNanoTS();
143 uint64_t StartTick = ASMReadTSC();
144 uint64_t MinTicks = UINT64_MAX;
145 for (i = 0; i < 1000000; i++)
146 {
147 uint64_t OneStartTick = ASMReadTSC();
148 rc = SUPR3CallVMMR0Fast(pVMR0, VMMR0_DO_NOP, 0);
149 uint64_t Ticks = ASMReadTSC() - OneStartTick;
150 if (Ticks < MinTicks)
151 MinTicks = Ticks;
152
153 if (RT_UNLIKELY(rc != VINF_SUCCESS))
154 {
155 RTPrintf("tstInt: SUPR3CallVMMR0Fast -> rc=%Rrc i=%d Expected VINF_SUCCESS!\n", rc, i);
156 rcRet++;
157 break;
158 }
159 }
160 uint64_t Ticks = ASMReadTSC() - StartTick;
161 uint64_t NanoSecs = RTTimeNanoTS() - StartTS;
162
163 RTPrintf("tstInt: SUPR3CallVMMR0Fast - %d iterations in %llu ns / %llu ticks. %llu ns / %#llu ticks per iteration. Min %llu ticks.\n",
164 i, NanoSecs, Ticks, NanoSecs / i, Ticks / i, MinTicks);
165
166 /*
167 * The ordinary path.
168 */
169 RTTimeNanoTS();
170 StartTS = RTTimeNanoTS();
171 StartTick = ASMReadTSC();
172 MinTicks = UINT64_MAX;
173 for (i = 0; i < 1000000; i++)
174 {
175 uint64_t OneStartTick = ASMReadTSC();
176 rc = SUPR3CallVMMR0Ex(pVMR0, NIL_VMCPUID, VMMR0_DO_SLOW_NOP, 0, NULL);
177 uint64_t OneTicks = ASMReadTSC() - OneStartTick;
178 if (OneTicks < MinTicks)
179 MinTicks = OneTicks;
180
181 if (RT_UNLIKELY(rc != VINF_SUCCESS))
182 {
183 RTPrintf("tstInt: SUPR3CallVMMR0Ex -> rc=%Rrc i=%d Expected VINF_SUCCESS!\n", rc, i);
184 rcRet++;
185 break;
186 }
187 }
188 Ticks = ASMReadTSC() - StartTick;
189 NanoSecs = RTTimeNanoTS() - StartTS;
190
191 RTPrintf("tstInt: SUPR3CallVMMR0Ex - %d iterations in %llu ns / %llu ticks. %llu ns / %#llu ticks per iteration. Min %llu ticks.\n",
192 i, NanoSecs, Ticks, NanoSecs / i, Ticks / i, MinTicks);
193 }
194 }
195 else
196 {
197 RTPrintf("tstInt: SUPR3SetVMForFastIOCtl failed: %Rrc\n", rc);
198 rcRet++;
199 }
200
201 rc = SUPR3CallVMMR0Ex(pVMR0, 0 /*idCpu*/, VMMR0_DO_GVMM_DESTROY_VM, 0, NULL);
202 if (RT_FAILURE(rc))
203 {
204 RTPrintf("tstInt: VMMR0_DO_GVMM_DESTROY_VM failed: %Rrc\n", rc);
205 rcRet++;
206 }
207 }
208 else
209 {
210 RTPrintf("tstInt: VMMR0_DO_GVMM_CREATE_VM failed\n");
211 rcRet++;
212 }
213
214 /*
215 * Unload VMM.
216 */
217 rc = SUPR3UnloadVMM();
218 if (rc)
219 {
220 RTPrintf("tstInt: SUPR3UnloadVMM failed with rc=%Rrc\n", rc);
221 rcRet++;
222 }
223 }
224 else
225 {
226 RTPrintf("tstInt: SUPR3LoadVMM failed with rc=%Rrc%#RTeim\n", rc, &ErrInfo.Core);
227 rcRet++;
228 }
229
230 /*
231 * Terminate.
232 */
233 rc = SUPR3Term(false /*fForced*/);
234 rcRet += rc != 0;
235 RTPrintf("tstInt: SUPR3Term -> rc=%Rrc\n", rc);
236 }
237
238 return !!rc;
239}
240
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