VirtualBox

source: vbox/trunk/src/VBox/VMM/VMMTests.cpp@ 13762

Last change on this file since 13762 was 13714, checked in by vboxsync, 16 years ago

VMM: More renaming and cleanup, caught another R3/R0 pointer - the ring-0 logger.
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File size: 23.3 KB
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1/* $Id: VMMTests.cpp 13714 2008-10-31 14:01:43Z vboxsync $ */
2/** @file
3 * VMM - The Virtual Machine Monitor Core, Tests.
4 */
5
6/*
7 * Copyright (C) 2006-2007 Sun Microsystems, Inc.
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18 * Clara, CA 95054 USA or visit http://www.sun.com if you need
19 * additional information or have any questions.
20 */
21
22//#define NO_SUPCALLR0VMM
23
24/*******************************************************************************
25* Header Files *
26*******************************************************************************/
27#define LOG_GROUP LOG_GROUP_VMM
28#include <VBox/vmm.h>
29#include <VBox/pdm.h>
30#include <VBox/cpum.h>
31#include <VBox/mm.h>
32#include <VBox/trpm.h>
33#include <VBox/selm.h>
34#include "VMMInternal.h"
35#include <VBox/vm.h>
36#include <VBox/err.h>
37#include <VBox/param.h>
38#include <VBox/x86.h>
39#include <VBox/hwaccm.h>
40
41#include <iprt/assert.h>
42#include <iprt/asm.h>
43#include <iprt/time.h>
44#include <iprt/stream.h>
45#include <iprt/string.h>
46
47
48/**
49 * Performs a testcase.
50 *
51 * @returns return value from the test.
52 * @param pVM The VM handle.
53 * @param enmTestcase The testcase operation to perform.
54 * @param uVariation The testcase variation id.
55 */
56static int vmmR3DoGCTest(PVM pVM, VMMGCOPERATION enmTestcase, unsigned uVariation)
57{
58 RTGCPTR32 GCPtrEP;
59 int rc = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, "VMMGCEntry", &GCPtrEP);
60 if (VBOX_FAILURE(rc))
61 return rc;
62
63 CPUMHyperSetCtxCore(pVM, NULL);
64 memset(pVM->vmm.s.pbEMTStackR3, 0xaa, VMM_STACK_SIZE);
65 CPUMSetHyperESP(pVM, pVM->vmm.s.pbEMTStackBottomRC); /* Clear the stack. */
66 CPUMPushHyper(pVM, uVariation);
67 CPUMPushHyper(pVM, enmTestcase);
68 CPUMPushHyper(pVM, pVM->pVMGC);
69 CPUMPushHyper(pVM, 3 * sizeof(RTGCPTR32)); /* stack frame size */
70 CPUMPushHyper(pVM, GCPtrEP); /* what to call */
71 CPUMSetHyperEIP(pVM, pVM->vmm.s.pfnCallTrampolineRC);
72 rc = SUPCallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN);
73 if (RT_LIKELY(rc == VINF_SUCCESS))
74 rc = pVM->vmm.s.iLastGZRc;
75 return rc;
76}
77
78
79/**
80 * Performs a trap test.
81 *
82 * @returns Return value from the trap test.
83 * @param pVM The VM handle.
84 * @param u8Trap The trap number to test.
85 * @param uVariation The testcase variation.
86 * @param rcExpect The expected result.
87 * @param u32Eax The expected eax value.
88 * @param pszFaultEIP The fault address. Pass NULL if this isn't available or doesn't apply.
89 * @param pszDesc The test description.
90 */
91static int vmmR3DoTrapTest(PVM pVM, uint8_t u8Trap, unsigned uVariation, int rcExpect, uint32_t u32Eax, const char *pszFaultEIP, const char *pszDesc)
92{
93 RTPrintf("VMM: testing 0%x / %d - %s\n", u8Trap, uVariation, pszDesc);
94
95 RTGCPTR32 GCPtrEP;
96 int rc = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, "VMMGCEntry", &GCPtrEP);
97 if (VBOX_FAILURE(rc))
98 return rc;
99
100 CPUMHyperSetCtxCore(pVM, NULL);
101 memset(pVM->vmm.s.pbEMTStackR3, 0xaa, VMM_STACK_SIZE);
102 CPUMSetHyperESP(pVM, pVM->vmm.s.pbEMTStackBottomRC); /* Clear the stack. */
103 CPUMPushHyper(pVM, uVariation);
104 CPUMPushHyper(pVM, u8Trap + VMMGC_DO_TESTCASE_TRAP_FIRST);
105 CPUMPushHyper(pVM, pVM->pVMGC);
106 CPUMPushHyper(pVM, 3 * sizeof(RTGCPTR32)); /* stack frame size */
107 CPUMPushHyper(pVM, GCPtrEP); /* what to call */
108 CPUMSetHyperEIP(pVM, pVM->vmm.s.pfnCallTrampolineRC);
109 rc = SUPCallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN);
110 if (RT_LIKELY(rc == VINF_SUCCESS))
111 rc = pVM->vmm.s.iLastGZRc;
112 bool fDump = false;
113 if (rc != rcExpect)
114 {
115 RTPrintf("VMM: FAILURE - rc=%Vrc expected %Vrc\n", rc, rcExpect);
116 if (rc != VERR_NOT_IMPLEMENTED)
117 fDump = true;
118 }
119 else if ( rcExpect != VINF_SUCCESS
120 && u8Trap != 8 /* double fault doesn't dare set TrapNo. */
121 && u8Trap != 3 /* guest only, we're not in guest. */
122 && u8Trap != 1 /* guest only, we're not in guest. */
123 && u8Trap != TRPMGetTrapNo(pVM))
124 {
125 RTPrintf("VMM: FAILURE - Trap %#x expected %#x\n", TRPMGetTrapNo(pVM), u8Trap);
126 fDump = true;
127 }
128 else if (pszFaultEIP)
129 {
130 RTGCPTR32 GCPtrFault;
131 int rc2 = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, pszFaultEIP, &GCPtrFault);
132 if (VBOX_FAILURE(rc2))
133 RTPrintf("VMM: FAILURE - Failed to resolve symbol '%s', %Vrc!\n", pszFaultEIP, rc);
134 else if (GCPtrFault != CPUMGetHyperEIP(pVM))
135 {
136 RTPrintf("VMM: FAILURE - EIP=%VGv expected %VGv (%s)\n", CPUMGetHyperEIP(pVM), GCPtrFault, pszFaultEIP);
137 fDump = true;
138 }
139 }
140 else if (rcExpect != VINF_SUCCESS)
141 {
142 if (CPUMGetHyperSS(pVM) == SELMGetHyperDS(pVM))
143 RTPrintf("VMM: FAILURE - ss=%x expected %x\n", CPUMGetHyperSS(pVM), SELMGetHyperDS(pVM));
144 if (CPUMGetHyperES(pVM) == SELMGetHyperDS(pVM))
145 RTPrintf("VMM: FAILURE - es=%x expected %x\n", CPUMGetHyperES(pVM), SELMGetHyperDS(pVM));
146 if (CPUMGetHyperDS(pVM) == SELMGetHyperDS(pVM))
147 RTPrintf("VMM: FAILURE - ds=%x expected %x\n", CPUMGetHyperDS(pVM), SELMGetHyperDS(pVM));
148 if (CPUMGetHyperFS(pVM) == SELMGetHyperDS(pVM))
149 RTPrintf("VMM: FAILURE - fs=%x expected %x\n", CPUMGetHyperFS(pVM), SELMGetHyperDS(pVM));
150 if (CPUMGetHyperGS(pVM) == SELMGetHyperDS(pVM))
151 RTPrintf("VMM: FAILURE - gs=%x expected %x\n", CPUMGetHyperGS(pVM), SELMGetHyperDS(pVM));
152 if (CPUMGetHyperEDI(pVM) == 0x01234567)
153 RTPrintf("VMM: FAILURE - edi=%x expected %x\n", CPUMGetHyperEDI(pVM), 0x01234567);
154 if (CPUMGetHyperESI(pVM) == 0x42000042)
155 RTPrintf("VMM: FAILURE - esi=%x expected %x\n", CPUMGetHyperESI(pVM), 0x42000042);
156 if (CPUMGetHyperEBP(pVM) == 0xffeeddcc)
157 RTPrintf("VMM: FAILURE - ebp=%x expected %x\n", CPUMGetHyperEBP(pVM), 0xffeeddcc);
158 if (CPUMGetHyperEBX(pVM) == 0x89abcdef)
159 RTPrintf("VMM: FAILURE - ebx=%x expected %x\n", CPUMGetHyperEBX(pVM), 0x89abcdef);
160 if (CPUMGetHyperECX(pVM) == 0xffffaaaa)
161 RTPrintf("VMM: FAILURE - ecx=%x expected %x\n", CPUMGetHyperECX(pVM), 0xffffaaaa);
162 if (CPUMGetHyperEDX(pVM) == 0x77778888)
163 RTPrintf("VMM: FAILURE - edx=%x expected %x\n", CPUMGetHyperEDX(pVM), 0x77778888);
164 if (CPUMGetHyperEAX(pVM) == u32Eax)
165 RTPrintf("VMM: FAILURE - eax=%x expected %x\n", CPUMGetHyperEAX(pVM), u32Eax);
166 }
167 if (fDump)
168 VMMR3FatalDump(pVM, rc);
169 return rc;
170}
171
172
173/* execute the switch. */
174VMMR3DECL(int) VMMDoTest(PVM pVM)
175{
176#if 1
177#ifdef NO_SUPCALLR0VMM
178 RTPrintf("NO_SUPCALLR0VMM\n");
179 return VINF_SUCCESS;
180#endif
181
182 /*
183 * Setup stack for calling VMMGCEntry().
184 */
185 RTGCPTR32 GCPtrEP;
186 int rc = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, "VMMGCEntry", &GCPtrEP);
187 if (VBOX_SUCCESS(rc))
188 {
189 RTPrintf("VMM: VMMGCEntry=%VGv\n", GCPtrEP);
190
191 /*
192 * Test various crashes which we must be able to recover from.
193 */
194 vmmR3DoTrapTest(pVM, 0x3, 0, VINF_EM_DBG_HYPER_ASSERTION, 0xf0f0f0f0, "vmmGCTestTrap3_FaultEIP", "int3");
195 vmmR3DoTrapTest(pVM, 0x3, 1, VINF_EM_DBG_HYPER_ASSERTION, 0xf0f0f0f0, "vmmGCTestTrap3_FaultEIP", "int3 WP");
196
197#if defined(DEBUG_bird) /* guess most people would like to skip these since they write to com1. */
198 vmmR3DoTrapTest(pVM, 0x8, 0, VERR_TRPM_PANIC, 0x00000000, "vmmGCTestTrap8_FaultEIP", "#DF [#PG]");
199 SELMR3Relocate(pVM); /* this resets the busy flag of the Trap 08 TSS */
200 bool f;
201 rc = CFGMR3QueryBool(CFGMR3GetRoot(pVM), "DoubleFault", &f);
202#if !defined(DEBUG_bird)
203 if (VBOX_SUCCESS(rc) && f)
204#endif
205 {
206 /* see tripple fault warnings in SELM and VMMGC.cpp. */
207 vmmR3DoTrapTest(pVM, 0x8, 1, VERR_TRPM_PANIC, 0x00000000, "vmmGCTestTrap8_FaultEIP", "#DF [#PG] WP");
208 SELMR3Relocate(pVM); /* this resets the busy flag of the Trap 08 TSS */
209 }
210#endif
211
212 vmmR3DoTrapTest(pVM, 0xd, 0, VERR_TRPM_DONT_PANIC, 0xf0f0f0f0, "vmmGCTestTrap0d_FaultEIP", "ltr #GP");
213 ///@todo find a better \#GP case, on intel ltr will \#PF (busy update?) and not \#GP.
214 //vmmR3DoTrapTest(pVM, 0xd, 1, VERR_TRPM_DONT_PANIC, 0xf0f0f0f0, "vmmGCTestTrap0d_FaultEIP", "ltr #GP WP");
215
216 vmmR3DoTrapTest(pVM, 0xe, 0, VERR_TRPM_DONT_PANIC, 0x00000000, "vmmGCTestTrap0e_FaultEIP", "#PF (NULL)");
217 vmmR3DoTrapTest(pVM, 0xe, 1, VERR_TRPM_DONT_PANIC, 0x00000000, "vmmGCTestTrap0e_FaultEIP", "#PF (NULL) WP");
218 vmmR3DoTrapTest(pVM, 0xe, 2, VINF_SUCCESS, 0x00000000, NULL, "#PF w/Tmp Handler");
219 vmmR3DoTrapTest(pVM, 0xe, 4, VINF_SUCCESS, 0x00000000, NULL, "#PF w/Tmp Handler and bad fs");
220
221 /*
222 * Set a debug register and perform a context switch.
223 */
224 rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
225 if (rc != VINF_SUCCESS)
226 {
227 RTPrintf("VMM: Nop test failed, rc=%Vrc not VINF_SUCCESS\n", rc);
228 return rc;
229 }
230
231 /* a harmless breakpoint */
232 RTPrintf("VMM: testing hardware bp at 0x10000 (not hit)\n");
233 DBGFADDRESS Addr;
234 DBGFR3AddrFromFlat(pVM, &Addr, 0x10000);
235 RTUINT iBp0;
236 rc = DBGFR3BpSetReg(pVM, &Addr, 0, ~(uint64_t)0, X86_DR7_RW_EO, 1, &iBp0);
237 AssertReleaseRC(rc);
238 rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
239 if (rc != VINF_SUCCESS)
240 {
241 RTPrintf("VMM: DR0=0x10000 test failed with rc=%Vrc!\n", rc);
242 return rc;
243 }
244
245 /* a bad one at VMMGCEntry */
246 RTPrintf("VMM: testing hardware bp at VMMGCEntry (hit)\n");
247 DBGFR3AddrFromFlat(pVM, &Addr, GCPtrEP);
248 RTUINT iBp1;
249 rc = DBGFR3BpSetReg(pVM, &Addr, 0, ~(uint64_t)0, X86_DR7_RW_EO, 1, &iBp1);
250 AssertReleaseRC(rc);
251 rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
252 if (rc != VINF_EM_DBG_HYPER_BREAKPOINT)
253 {
254 RTPrintf("VMM: DR1=VMMGCEntry test failed with rc=%Vrc! expected VINF_EM_RAW_BREAKPOINT_HYPER\n", rc);
255 return rc;
256 }
257
258 /* resume the breakpoint */
259 RTPrintf("VMM: resuming hyper after breakpoint\n");
260 CPUMSetHyperEFlags(pVM, CPUMGetHyperEFlags(pVM) | X86_EFL_RF);
261 rc = VMMR3ResumeHyper(pVM);
262 if (rc != VINF_SUCCESS)
263 {
264 RTPrintf("VMM: failed to resume on hyper breakpoint, rc=%Vrc\n", rc);
265 return rc;
266 }
267
268 /* engage the breakpoint again and try single stepping. */
269 RTPrintf("VMM: testing hardware bp at VMMGCEntry + stepping\n");
270 rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
271 if (rc != VINF_EM_DBG_HYPER_BREAKPOINT)
272 {
273 RTPrintf("VMM: DR1=VMMGCEntry test failed with rc=%Vrc! expected VINF_EM_RAW_BREAKPOINT_HYPER\n", rc);
274 return rc;
275 }
276
277 RTGCUINTREG OldPc = CPUMGetHyperEIP(pVM);
278 RTPrintf("%RGr=>", OldPc);
279 unsigned i;
280 for (i = 0; i < 8; i++)
281 {
282 CPUMSetHyperEFlags(pVM, CPUMGetHyperEFlags(pVM) | X86_EFL_TF | X86_EFL_RF);
283 rc = VMMR3ResumeHyper(pVM);
284 if (rc != VINF_EM_DBG_HYPER_STEPPED)
285 {
286 RTPrintf("\nVMM: failed to step on hyper breakpoint, rc=%Vrc\n", rc);
287 return rc;
288 }
289 RTGCUINTREG Pc = CPUMGetHyperEIP(pVM);
290 RTPrintf("%RGr=>", Pc);
291 if (Pc == OldPc)
292 {
293 RTPrintf("\nVMM: step failed, PC: %RGr -> %RGr\n", OldPc, Pc);
294 return VERR_GENERAL_FAILURE;
295 }
296 OldPc = Pc;
297 }
298 RTPrintf("ok\n");
299
300 /* done, clear it */
301 if ( VBOX_FAILURE(DBGFR3BpClear(pVM, iBp0))
302 || VBOX_FAILURE(DBGFR3BpClear(pVM, iBp1)))
303 {
304 RTPrintf("VMM: Failed to clear breakpoints!\n");
305 return VERR_GENERAL_FAILURE;
306 }
307 rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
308 if (rc != VINF_SUCCESS)
309 {
310 RTPrintf("VMM: NOP failed, rc=%Vrc\n", rc);
311 return rc;
312 }
313
314 /*
315 * Interrupt masking.
316 */
317 RTPrintf("VMM: interrupt masking...\n"); RTStrmFlush(g_pStdOut); RTThreadSleep(250);
318 for (i = 0; i < 10000; i++)
319 {
320 uint64_t StartTick = ASMReadTSC();
321 rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_INTERRUPT_MASKING, 0);
322 if (rc != VINF_SUCCESS)
323 {
324 RTPrintf("VMM: Interrupt masking failed: rc=%Vrc\n", rc);
325 return rc;
326 }
327 uint64_t Ticks = ASMReadTSC() - StartTick;
328 if (Ticks < (SUPGetCpuHzFromGIP(g_pSUPGlobalInfoPage) / 10000))
329 RTPrintf("Warning: Ticks=%RU64 (< %RU64)\n", Ticks, SUPGetCpuHzFromGIP(g_pSUPGlobalInfoPage) / 10000);
330 }
331
332 /*
333 * Interrupt forwarding.
334 */
335 CPUMHyperSetCtxCore(pVM, NULL);
336 CPUMSetHyperESP(pVM, pVM->vmm.s.pbEMTStackBottomRC); /* Clear the stack. */
337 CPUMPushHyper(pVM, 0);
338 CPUMPushHyper(pVM, VMMGC_DO_TESTCASE_HYPER_INTERRUPT);
339 CPUMPushHyper(pVM, pVM->pVMGC);
340 CPUMPushHyper(pVM, 3 * sizeof(RTGCPTR32)); /* stack frame size */
341 CPUMPushHyper(pVM, GCPtrEP); /* what to call */
342 CPUMSetHyperEIP(pVM, pVM->vmm.s.pfnCallTrampolineRC);
343 Log(("trampoline=%x\n", pVM->vmm.s.pfnCallTrampolineRC));
344
345 /*
346 * Switch and do da thing.
347 */
348 RTPrintf("VMM: interrupt forwarding...\n"); RTStrmFlush(g_pStdOut); RTThreadSleep(250);
349 i = 0;
350 uint64_t tsBegin = RTTimeNanoTS();
351 uint64_t TickStart = ASMReadTSC();
352 do
353 {
354 rc = SUPCallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN);
355 if (RT_LIKELY(rc == VINF_SUCCESS))
356 rc = pVM->vmm.s.iLastGZRc;
357 if (VBOX_FAILURE(rc))
358 {
359 Log(("VMM: GC returned fatal %Vra in iteration %d\n", rc, i));
360 VMMR3FatalDump(pVM, rc);
361 return rc;
362 }
363 i++;
364 if (!(i % 32))
365 Log(("VMM: iteration %d, esi=%08x edi=%08x ebx=%08x\n",
366 i, CPUMGetHyperESI(pVM), CPUMGetHyperEDI(pVM), CPUMGetHyperEBX(pVM)));
367 } while (rc == VINF_EM_RAW_INTERRUPT_HYPER);
368 uint64_t TickEnd = ASMReadTSC();
369 uint64_t tsEnd = RTTimeNanoTS();
370
371 uint64_t Elapsed = tsEnd - tsBegin;
372 uint64_t PerIteration = Elapsed / (uint64_t)i;
373 uint64_t cTicksElapsed = TickEnd - TickStart;
374 uint64_t cTicksPerIteration = cTicksElapsed / (uint64_t)i;
375
376 RTPrintf("VMM: %8d interrupts in %11llu ns (%11llu ticks), %10llu ns/iteration (%11llu ticks)\n",
377 i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration);
378 Log(("VMM: %8d interrupts in %11llu ns (%11llu ticks), %10llu ns/iteration (%11llu ticks)\n",
379 i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration));
380
381 /*
382 * These forced actions are not necessary for the test and trigger breakpoints too.
383 */
384 VM_FF_CLEAR(pVM, VM_FF_TRPM_SYNC_IDT);
385 VM_FF_CLEAR(pVM, VM_FF_SELM_SYNC_TSS);
386
387 /*
388 * Profile switching.
389 */
390 RTPrintf("VMM: profiling switcher...\n");
391 Log(("VMM: profiling switcher...\n"));
392 uint64_t TickMin = ~0;
393 tsBegin = RTTimeNanoTS();
394 TickStart = ASMReadTSC();
395 for (i = 0; i < 1000000; i++)
396 {
397 CPUMHyperSetCtxCore(pVM, NULL);
398 CPUMSetHyperESP(pVM, pVM->vmm.s.pbEMTStackBottomRC); /* Clear the stack. */
399 CPUMPushHyper(pVM, 0);
400 CPUMPushHyper(pVM, VMMGC_DO_TESTCASE_NOP);
401 CPUMPushHyper(pVM, pVM->pVMGC);
402 CPUMPushHyper(pVM, 3 * sizeof(RTGCPTR32)); /* stack frame size */
403 CPUMPushHyper(pVM, GCPtrEP); /* what to call */
404 CPUMSetHyperEIP(pVM, pVM->vmm.s.pfnCallTrampolineRC);
405
406 uint64_t TickThisStart = ASMReadTSC();
407 rc = SUPCallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN);
408 if (RT_LIKELY(rc == VINF_SUCCESS))
409 rc = pVM->vmm.s.iLastGZRc;
410 uint64_t TickThisElapsed = ASMReadTSC() - TickThisStart;
411 if (VBOX_FAILURE(rc))
412 {
413 Log(("VMM: GC returned fatal %Vra in iteration %d\n", rc, i));
414 VMMR3FatalDump(pVM, rc);
415 return rc;
416 }
417 if (TickThisElapsed < TickMin)
418 TickMin = TickThisElapsed;
419 }
420 TickEnd = ASMReadTSC();
421 tsEnd = RTTimeNanoTS();
422
423 Elapsed = tsEnd - tsBegin;
424 PerIteration = Elapsed / (uint64_t)i;
425 cTicksElapsed = TickEnd - TickStart;
426 cTicksPerIteration = cTicksElapsed / (uint64_t)i;
427
428 RTPrintf("VMM: %8d cycles in %11llu ns (%11lld ticks), %10llu ns/iteration (%11lld ticks) Min %11lld ticks\n",
429 i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration, TickMin);
430 Log(("VMM: %8d cycles in %11llu ns (%11lld ticks), %10llu ns/iteration (%11lld ticks) Min %11lld ticks\n",
431 i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration, TickMin));
432
433 rc = VINF_SUCCESS;
434 }
435 else
436 AssertMsgFailed(("Failed to resolved VMMGC.gc::VMMGCEntry(), rc=%Vrc\n", rc));
437#endif
438 return rc;
439}
440
441#define SYNC_SEL(pHyperCtx, reg) \
442 if (pHyperCtx->reg) \
443 { \
444 SELMSELINFO selInfo; \
445 int rc = SELMR3GetShadowSelectorInfo(pVM, pHyperCtx->reg, &selInfo); \
446 AssertRC(rc); \
447 \
448 pHyperCtx->reg##Hid.u64Base = selInfo.GCPtrBase; \
449 pHyperCtx->reg##Hid.u32Limit = selInfo.cbLimit; \
450 pHyperCtx->reg##Hid.Attr.n.u1Present = selInfo.Raw.Gen.u1Present; \
451 pHyperCtx->reg##Hid.Attr.n.u1DefBig = selInfo.Raw.Gen.u1DefBig; \
452 pHyperCtx->reg##Hid.Attr.n.u1Granularity = selInfo.Raw.Gen.u1Granularity; \
453 pHyperCtx->reg##Hid.Attr.n.u4Type = selInfo.Raw.Gen.u4Type; \
454 pHyperCtx->reg##Hid.Attr.n.u2Dpl = selInfo.Raw.Gen.u2Dpl; \
455 pHyperCtx->reg##Hid.Attr.n.u1DescType = selInfo.Raw.Gen.u1DescType; \
456 pHyperCtx->reg##Hid.Attr.n.u1Long = selInfo.Raw.Gen.u1Long; \
457 }
458
459/* execute the switch. */
460VMMR3DECL(int) VMMDoHwAccmTest(PVM pVM)
461{
462 uint32_t i;
463 int rc;
464 PCPUMCTX pHyperCtx, pGuestCtx;
465 RTGCPHYS CR3Phys = 0x0; /* fake address */
466
467 if (!HWACCMR3IsAllowed(pVM))
468 {
469 RTPrintf("VMM: Hardware accelerated test not available!\n");
470 return VERR_ACCESS_DENIED;
471 }
472
473 /*
474 * These forced actions are not necessary for the test and trigger breakpoints too.
475 */
476 VM_FF_CLEAR(pVM, VM_FF_TRPM_SYNC_IDT);
477 VM_FF_CLEAR(pVM, VM_FF_SELM_SYNC_TSS);
478
479 /* Enable mapping of the hypervisor into the shadow page table. */
480 PGMR3ChangeShwPDMappings(pVM, true);
481
482 CPUMQueryHyperCtxPtr(pVM, &pHyperCtx);
483
484 pHyperCtx->cr0 = X86_CR0_PE | X86_CR0_WP | X86_CR0_PG | X86_CR0_TS | X86_CR0_ET | X86_CR0_NE | X86_CR0_MP;
485 pHyperCtx->cr4 = X86_CR4_PGE | X86_CR4_OSFSXR | X86_CR4_OSXMMEEXCPT;
486 PGMChangeMode(pVM, pHyperCtx->cr0, pHyperCtx->cr4, pHyperCtx->msrEFER);
487 PGMSyncCR3(pVM, pHyperCtx->cr0, CR3Phys, pHyperCtx->cr4, true);
488
489 VM_FF_CLEAR(pVM, VM_FF_TO_R3);
490 VM_FF_CLEAR(pVM, VM_FF_TIMER);
491 VM_FF_CLEAR(pVM, VM_FF_REQUEST);
492
493 /*
494 * Setup stack for calling VMMGCEntry().
495 */
496 RTGCPTR32 GCPtrEP;
497 rc = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, "VMMGCEntry", &GCPtrEP);
498 if (VBOX_SUCCESS(rc))
499 {
500 RTPrintf("VMM: VMMGCEntry=%VGv\n", GCPtrEP);
501
502 CPUMQueryHyperCtxPtr(pVM, &pHyperCtx);
503
504 /* Fill in hidden selector registers for the hypervisor state. */
505 SYNC_SEL(pHyperCtx, cs);
506 SYNC_SEL(pHyperCtx, ds);
507 SYNC_SEL(pHyperCtx, es);
508 SYNC_SEL(pHyperCtx, fs);
509 SYNC_SEL(pHyperCtx, gs);
510 SYNC_SEL(pHyperCtx, ss);
511 SYNC_SEL(pHyperCtx, tr);
512
513 /*
514 * Profile switching.
515 */
516 RTPrintf("VMM: profiling switcher...\n");
517 Log(("VMM: profiling switcher...\n"));
518 uint64_t TickMin = ~0;
519 uint64_t tsBegin = RTTimeNanoTS();
520 uint64_t TickStart = ASMReadTSC();
521 for (i = 0; i < 1000000; i++)
522 {
523 CPUMHyperSetCtxCore(pVM, NULL);
524
525 CPUMSetHyperESP(pVM, pVM->vmm.s.pbEMTStackBottomRC); /* Clear the stack. */
526 CPUMPushHyper(pVM, 0);
527 CPUMPushHyper(pVM, VMMGC_DO_TESTCASE_HWACCM_NOP);
528 CPUMPushHyper(pVM, pVM->pVMGC);
529 CPUMPushHyper(pVM, 3 * sizeof(RTGCPTR32)); /* stack frame size */
530 CPUMPushHyper(pVM, GCPtrEP); /* what to call */
531 CPUMSetHyperEIP(pVM, pVM->vmm.s.pfnCallTrampolineRC);
532
533 CPUMQueryHyperCtxPtr(pVM, &pHyperCtx);
534 pGuestCtx = CPUMQueryGuestCtxPtr(pVM);
535
536 /* Copy the hypervisor context to make sure we have a valid guest context. */
537 *pGuestCtx = *pHyperCtx;
538 pGuestCtx->cr3 = CR3Phys;
539
540 VM_FF_CLEAR(pVM, VM_FF_TO_R3);
541 VM_FF_CLEAR(pVM, VM_FF_TIMER);
542
543 uint64_t TickThisStart = ASMReadTSC();
544 rc = SUPCallVMMR0Fast(pVM->pVMR0, VMMR0_DO_HWACC_RUN);
545 uint64_t TickThisElapsed = ASMReadTSC() - TickThisStart;
546 if (VBOX_FAILURE(rc))
547 {
548 Log(("VMM: R0 returned fatal %Vrc in iteration %d\n", rc, i));
549 VMMR3FatalDump(pVM, rc);
550 return rc;
551 }
552 if (TickThisElapsed < TickMin)
553 TickMin = TickThisElapsed;
554 }
555 uint64_t TickEnd = ASMReadTSC();
556 uint64_t tsEnd = RTTimeNanoTS();
557
558 uint64_t Elapsed = tsEnd - tsBegin;
559 uint64_t PerIteration = Elapsed / (uint64_t)i;
560 uint64_t cTicksElapsed = TickEnd - TickStart;
561 uint64_t cTicksPerIteration = cTicksElapsed / (uint64_t)i;
562
563 RTPrintf("VMM: %8d cycles in %11llu ns (%11lld ticks), %10llu ns/iteration (%11lld ticks) Min %11lld ticks\n",
564 i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration, TickMin);
565 Log(("VMM: %8d cycles in %11llu ns (%11lld ticks), %10llu ns/iteration (%11lld ticks) Min %11lld ticks\n",
566 i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration, TickMin));
567
568 rc = VINF_SUCCESS;
569 }
570 else
571 AssertMsgFailed(("Failed to resolved VMMGC.gc::VMMGCEntry(), rc=%Vrc\n", rc));
572
573 return rc;
574}
575
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