VMMTests.cpp@ 45530

Last change on this file since 45530 was 44528, checked in by vboxsync, 12 years ago
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1	/* $Id: VMMTests.cpp 44528 2013-02-04 14:27:54Z vboxsync $ */
2	/** @file
3	* VMM - The Virtual Machine Monitor Core, Tests.
4	*/
5
6	/*
7	* Copyright (C) 2006-2013 Oracle Corporation
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
18	//#define NO_SUPCALLR0VMM
19
20	/*******************************************************************************
21	* Header Files *
22	*******************************************************************************/
23	#define LOG_GROUP LOG_GROUP_VMM
24	#include <iprt/asm-amd64-x86.h> /* for SUPGetCpuHzFromGIP */
25	#include <VBox/vmm/vmm.h>
26	#include <VBox/vmm/pdmapi.h>
27	#include <VBox/vmm/cpum.h>
28	#include <VBox/dbg.h>
29	#include <VBox/vmm/mm.h>
30	#include <VBox/vmm/trpm.h>
31	#include <VBox/vmm/selm.h>
32	#include "VMMInternal.h"
33	#include <VBox/vmm/vm.h>
34	#include <VBox/err.h>
35	#include <VBox/param.h>
36	#include <VBox/vmm/hm.h>
37
38	#include <iprt/assert.h>
39	#include <iprt/asm.h>
40	#include <iprt/time.h>
41	#include <iprt/stream.h>
42	#include <iprt/string.h>
43	#include <iprt/x86.h>
44
45	static void vmmR3TestClearStack(PVMCPU pVCpu)
46	{
47	/* We leave the first 64 bytes of the stack alone because of strict
48	ring-0 long jump code uses it. */
49	memset(pVCpu->vmm.s.pbEMTStackR3 + 64, 0xaa, VMM_STACK_SIZE - 64);
50	}
51
52
53	#ifdef VBOX_WITH_RAW_MODE
54
55	/**
56	* Performs a testcase.
57	*
58	* @returns return value from the test.
59	* @param pVM Pointer to the VM.
60	* @param enmTestcase The testcase operation to perform.
61	* @param uVariation The testcase variation id.
62	*/
63	static int vmmR3DoGCTest(PVM pVM, VMMGCOPERATION enmTestcase, unsigned uVariation)
64	{
65	PVMCPU pVCpu = &pVM->aCpus[0];
66
67	RTRCPTR RCPtrEP;
68	int rc = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, "VMMGCEntry", &RCPtrEP);
69	if (RT_FAILURE(rc))
70	return rc;
71
72	CPUMSetHyperState(pVCpu, pVM->vmm.s.pfnCallTrampolineRC, pVCpu->vmm.s.pbEMTStackBottomRC, 0, 0);
73	vmmR3TestClearStack(pVCpu);
74	CPUMPushHyper(pVCpu, uVariation);
75	CPUMPushHyper(pVCpu, enmTestcase);
76	CPUMPushHyper(pVCpu, pVM->pVMRC);
77	CPUMPushHyper(pVCpu, 3 * sizeof(RTRCPTR)); /* stack frame size */
78	CPUMPushHyper(pVCpu, RCPtrEP); /* what to call */
79	Assert(CPUMGetHyperCR3(pVCpu) && CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu));
80	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN, 0);
81	if (RT_LIKELY(rc == VINF_SUCCESS))
82	rc = pVCpu->vmm.s.iLastGZRc;
83	return rc;
84	}
85
86
87	/**
88	* Performs a trap test.
89	*
90	* @returns Return value from the trap test.
91	* @param pVM Pointer to the VM.
92	* @param u8Trap The trap number to test.
93	* @param uVariation The testcase variation.
94	* @param rcExpect The expected result.
95	* @param u32Eax The expected eax value.
96	* @param pszFaultEIP The fault address. Pass NULL if this isn't available or doesn't apply.
97	* @param pszDesc The test description.
98	*/
99	static int vmmR3DoTrapTest(PVM pVM, uint8_t u8Trap, unsigned uVariation, int rcExpect, uint32_t u32Eax, const char pszFaultEIP, const char pszDesc)
100	{
101	PVMCPU pVCpu = &pVM->aCpus[0];
102
103	RTPrintf("VMM: testing 0%x / %d - %s\n", u8Trap, uVariation, pszDesc);
104
105	RTRCPTR RCPtrEP;
106	int rc = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, "VMMGCEntry", &RCPtrEP);
107	if (RT_FAILURE(rc))
108	return rc;
109
110	CPUMSetHyperState(pVCpu, pVM->vmm.s.pfnCallTrampolineRC, pVCpu->vmm.s.pbEMTStackBottomRC, 0, 0);
111	vmmR3TestClearStack(pVCpu);
112	CPUMPushHyper(pVCpu, uVariation);
113	CPUMPushHyper(pVCpu, u8Trap + VMMGC_DO_TESTCASE_TRAP_FIRST);
114	CPUMPushHyper(pVCpu, pVM->pVMRC);
115	CPUMPushHyper(pVCpu, 3 * sizeof(RTRCPTR)); /* stack frame size */
116	CPUMPushHyper(pVCpu, RCPtrEP); /* what to call */
117	Assert(CPUMGetHyperCR3(pVCpu) && CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu));
118	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN, 0);
119	if (RT_LIKELY(rc == VINF_SUCCESS))
120	rc = pVCpu->vmm.s.iLastGZRc;
121	bool fDump = false;
122	if (rc != rcExpect)
123	{
124	RTPrintf("VMM: FAILURE - rc=%Rrc expected %Rrc\n", rc, rcExpect);
125	if (rc != VERR_NOT_IMPLEMENTED)
126	fDump = true;
127	}
128	else if ( rcExpect != VINF_SUCCESS
129	&& u8Trap != 8 /* double fault doesn't dare set TrapNo. */
130	&& u8Trap != 3 /* guest only, we're not in guest. */
131	&& u8Trap != 1 /* guest only, we're not in guest. */
132	&& u8Trap != TRPMGetTrapNo(pVCpu))
133	{
134	RTPrintf("VMM: FAILURE - Trap %#x expected %#x\n", TRPMGetTrapNo(pVCpu), u8Trap);
135	fDump = true;
136	}
137	else if (pszFaultEIP)
138	{
139	RTRCPTR RCPtrFault;
140	int rc2 = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, pszFaultEIP, &RCPtrFault);
141	if (RT_FAILURE(rc2))
142	RTPrintf("VMM: FAILURE - Failed to resolve symbol '%s', %Rrc!\n", pszFaultEIP, rc);
143	else if (RCPtrFault != CPUMGetHyperEIP(pVCpu))
144	{
145	RTPrintf("VMM: FAILURE - EIP=%08RX32 expected %RRv (%s)\n", CPUMGetHyperEIP(pVCpu), RCPtrFault, pszFaultEIP);
146	fDump = true;
147	}
148	}
149	else if (rcExpect != VINF_SUCCESS)
150	{
151	if (CPUMGetHyperSS(pVCpu) == SELMGetHyperDS(pVM))
152	RTPrintf("VMM: FAILURE - ss=%x expected %x\n", CPUMGetHyperSS(pVCpu), SELMGetHyperDS(pVM));
153	if (CPUMGetHyperES(pVCpu) == SELMGetHyperDS(pVM))
154	RTPrintf("VMM: FAILURE - es=%x expected %x\n", CPUMGetHyperES(pVCpu), SELMGetHyperDS(pVM));
155	if (CPUMGetHyperDS(pVCpu) == SELMGetHyperDS(pVM))
156	RTPrintf("VMM: FAILURE - ds=%x expected %x\n", CPUMGetHyperDS(pVCpu), SELMGetHyperDS(pVM));
157	if (CPUMGetHyperFS(pVCpu) == SELMGetHyperDS(pVM))
158	RTPrintf("VMM: FAILURE - fs=%x expected %x\n", CPUMGetHyperFS(pVCpu), SELMGetHyperDS(pVM));
159	if (CPUMGetHyperGS(pVCpu) == SELMGetHyperDS(pVM))
160	RTPrintf("VMM: FAILURE - gs=%x expected %x\n", CPUMGetHyperGS(pVCpu), SELMGetHyperDS(pVM));
161	if (CPUMGetHyperEDI(pVCpu) == 0x01234567)
162	RTPrintf("VMM: FAILURE - edi=%x expected %x\n", CPUMGetHyperEDI(pVCpu), 0x01234567);
163	if (CPUMGetHyperESI(pVCpu) == 0x42000042)
164	RTPrintf("VMM: FAILURE - esi=%x expected %x\n", CPUMGetHyperESI(pVCpu), 0x42000042);
165	if (CPUMGetHyperEBP(pVCpu) == 0xffeeddcc)
166	RTPrintf("VMM: FAILURE - ebp=%x expected %x\n", CPUMGetHyperEBP(pVCpu), 0xffeeddcc);
167	if (CPUMGetHyperEBX(pVCpu) == 0x89abcdef)
168	RTPrintf("VMM: FAILURE - ebx=%x expected %x\n", CPUMGetHyperEBX(pVCpu), 0x89abcdef);
169	if (CPUMGetHyperECX(pVCpu) == 0xffffaaaa)
170	RTPrintf("VMM: FAILURE - ecx=%x expected %x\n", CPUMGetHyperECX(pVCpu), 0xffffaaaa);
171	if (CPUMGetHyperEDX(pVCpu) == 0x77778888)
172	RTPrintf("VMM: FAILURE - edx=%x expected %x\n", CPUMGetHyperEDX(pVCpu), 0x77778888);
173	if (CPUMGetHyperEAX(pVCpu) == u32Eax)
174	RTPrintf("VMM: FAILURE - eax=%x expected %x\n", CPUMGetHyperEAX(pVCpu), u32Eax);
175	}
176	if (fDump)
177	VMMR3FatalDump(pVM, pVCpu, rc);
178	return rc;
179	}
180
181	#endif /* VBOX_WITH_RAW_MODE */
182
183
184	/* execute the switch. */
185	VMMR3DECL(int) VMMDoTest(PVM pVM)
186	{
187	int rc = VINF_SUCCESS;
188
189	#ifdef VBOX_WITH_RAW_MODE
190	PVMCPU pVCpu = &pVM->aCpus[0];
191	PUVM pUVM = pVM->pUVM;
192
193	# ifdef NO_SUPCALLR0VMM
194	RTPrintf("NO_SUPCALLR0VMM\n");
195	return rc;
196	# endif
197
198	/*
199	* Setup stack for calling VMMGCEntry().
200	*/
201	RTRCPTR RCPtrEP;
202	rc = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, "VMMGCEntry", &RCPtrEP);
203	if (RT_SUCCESS(rc))
204	{
205	RTPrintf("VMM: VMMGCEntry=%RRv\n", RCPtrEP);
206
207	/*
208	* Test various crashes which we must be able to recover from.
209	*/
210	vmmR3DoTrapTest(pVM, 0x3, 0, VINF_EM_DBG_HYPER_ASSERTION, 0xf0f0f0f0, "vmmGCTestTrap3_FaultEIP", "int3");
211	vmmR3DoTrapTest(pVM, 0x3, 1, VINF_EM_DBG_HYPER_ASSERTION, 0xf0f0f0f0, "vmmGCTestTrap3_FaultEIP", "int3 WP");
212
213	# if defined(DEBUG_bird) /* guess most people would like to skip these since they write to com1. */
214	vmmR3DoTrapTest(pVM, 0x8, 0, VERR_TRPM_PANIC, 0x00000000, "vmmGCTestTrap8_FaultEIP", "#DF [#PG]");
215	SELMR3Relocate(pVM); /* this resets the busy flag of the Trap 08 TSS */
216	bool f;
217	rc = CFGMR3QueryBool(CFGMR3GetRoot(pVM), "DoubleFault", &f);
218	# if !defined(DEBUG_bird)
219	if (RT_SUCCESS(rc) && f)
220	# endif
221	{
222	/* see triple fault warnings in SELM and VMMGC.cpp. */
223	vmmR3DoTrapTest(pVM, 0x8, 1, VERR_TRPM_PANIC, 0x00000000, "vmmGCTestTrap8_FaultEIP", "#DF [#PG] WP");
224	SELMR3Relocate(pVM); /* this resets the busy flag of the Trap 08 TSS */
225	}
226	# endif
227
228	vmmR3DoTrapTest(pVM, 0xd, 0, VERR_TRPM_DONT_PANIC, 0xf0f0f0f0, "vmmGCTestTrap0d_FaultEIP", "ltr #GP");
229	///@todo find a better \#GP case, on intel ltr will \#PF (busy update?) and not \#GP.
230	//vmmR3DoTrapTest(pVM, 0xd, 1, VERR_TRPM_DONT_PANIC, 0xf0f0f0f0, "vmmGCTestTrap0d_FaultEIP", "ltr #GP WP");
231
232	vmmR3DoTrapTest(pVM, 0xe, 0, VERR_TRPM_DONT_PANIC, 0x00000000, "vmmGCTestTrap0e_FaultEIP", "#PF (NULL)");
233	vmmR3DoTrapTest(pVM, 0xe, 1, VERR_TRPM_DONT_PANIC, 0x00000000, "vmmGCTestTrap0e_FaultEIP", "#PF (NULL) WP");
234	vmmR3DoTrapTest(pVM, 0xe, 2, VINF_SUCCESS, 0x00000000, NULL, "#PF w/Tmp Handler");
235	/* This test is no longer relevant as fs and gs are loaded with NULL
236	selectors and we will always return to HC if a #GP occurs while
237	returning to guest code.
238	vmmR3DoTrapTest(pVM, 0xe, 4, VINF_SUCCESS, 0x00000000, NULL, "#PF w/Tmp Handler and bad fs");
239	*/
240
241	/*
242	* Set a debug register and perform a context switch.
243	*/
244	rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
245	if (rc != VINF_SUCCESS)
246	{
247	RTPrintf("VMM: Nop test failed, rc=%Rrc not VINF_SUCCESS\n", rc);
248	return rc;
249	}
250
251	/* a harmless breakpoint */
252	RTPrintf("VMM: testing hardware bp at 0x10000 (not hit)\n");
253	DBGFADDRESS Addr;
254	DBGFR3AddrFromFlat(pUVM, &Addr, 0x10000);
255	RTUINT iBp0;
256	rc = DBGFR3BpSetReg(pUVM, &Addr, 0, ~(uint64_t)0, X86_DR7_RW_EO, 1, &iBp0);
257	AssertReleaseRC(rc);
258	rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
259	if (rc != VINF_SUCCESS)
260	{
261	RTPrintf("VMM: DR0=0x10000 test failed with rc=%Rrc!\n", rc);
262	return rc;
263	}
264
265	/* a bad one at VMMGCEntry */
266	RTPrintf("VMM: testing hardware bp at VMMGCEntry (hit)\n");
267	DBGFR3AddrFromFlat(pUVM, &Addr, RCPtrEP);
268	RTUINT iBp1;
269	rc = DBGFR3BpSetReg(pUVM, &Addr, 0, ~(uint64_t)0, X86_DR7_RW_EO, 1, &iBp1);
270	AssertReleaseRC(rc);
271	rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
272	if (rc != VINF_EM_DBG_HYPER_BREAKPOINT)
273	{
274	RTPrintf("VMM: DR1=VMMGCEntry test failed with rc=%Rrc! expected VINF_EM_RAW_BREAKPOINT_HYPER\n", rc);
275	return rc;
276	}
277
278	/* resume the breakpoint */
279	RTPrintf("VMM: resuming hyper after breakpoint\n");
280	CPUMSetHyperEFlags(pVCpu, CPUMGetHyperEFlags(pVCpu) \| X86_EFL_RF);
281	rc = VMMR3ResumeHyper(pVM, pVCpu);
282	if (rc != VINF_SUCCESS)
283	{
284	RTPrintf("VMM: failed to resume on hyper breakpoint, rc=%Rrc = KNOWN BUG\n", rc); /** @todo fix VMMR3ResumeHyper */
285	return rc;
286	}
287
288	/* engage the breakpoint again and try single stepping. */
289	RTPrintf("VMM: testing hardware bp at VMMGCEntry + stepping\n");
290	rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
291	if (rc != VINF_EM_DBG_HYPER_BREAKPOINT)
292	{
293	RTPrintf("VMM: DR1=VMMGCEntry test failed with rc=%Rrc! expected VINF_EM_RAW_BREAKPOINT_HYPER\n", rc);
294	return rc;
295	}
296
297	RTGCUINTREG OldPc = CPUMGetHyperEIP(pVCpu);
298	RTPrintf("%RGr=>", OldPc);
299	unsigned i;
300	for (i = 0; i < 8; i++)
301	{
302	CPUMSetHyperEFlags(pVCpu, CPUMGetHyperEFlags(pVCpu) \| X86_EFL_TF \| X86_EFL_RF);
303	rc = VMMR3ResumeHyper(pVM, pVCpu);
304	if (rc != VINF_EM_DBG_HYPER_STEPPED)
305	{
306	RTPrintf("\nVMM: failed to step on hyper breakpoint, rc=%Rrc\n", rc);
307	return rc;
308	}
309	RTGCUINTREG Pc = CPUMGetHyperEIP(pVCpu);
310	RTPrintf("%RGr=>", Pc);
311	if (Pc == OldPc)
312	{
313	RTPrintf("\nVMM: step failed, PC: %RGr -> %RGr\n", OldPc, Pc);
314	return VERR_GENERAL_FAILURE;
315	}
316	OldPc = Pc;
317	}
318	RTPrintf("ok\n");
319
320	/* done, clear it */
321	if ( RT_FAILURE(DBGFR3BpClear(pUVM, iBp0))
322	\|\| RT_FAILURE(DBGFR3BpClear(pUVM, iBp1)))
323	{
324	RTPrintf("VMM: Failed to clear breakpoints!\n");
325	return VERR_GENERAL_FAILURE;
326	}
327	rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
328	if (rc != VINF_SUCCESS)
329	{
330	RTPrintf("VMM: NOP failed, rc=%Rrc\n", rc);
331	return rc;
332	}
333
334	/*
335	* Interrupt masking.
336	*/
337	RTPrintf("VMM: interrupt masking...\n"); RTStrmFlush(g_pStdOut); RTThreadSleep(250);
338	for (i = 0; i < 10000; i++)
339	{
340	uint64_t StartTick = ASMReadTSC();
341	rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_INTERRUPT_MASKING, 0);
342	if (rc != VINF_SUCCESS)
343	{
344	RTPrintf("VMM: Interrupt masking failed: rc=%Rrc\n", rc);
345	return rc;
346	}
347	uint64_t Ticks = ASMReadTSC() - StartTick;
348	if (Ticks < (SUPGetCpuHzFromGIP(g_pSUPGlobalInfoPage) / 10000))
349	RTPrintf("Warning: Ticks=%RU64 (< %RU64)\n", Ticks, SUPGetCpuHzFromGIP(g_pSUPGlobalInfoPage) / 10000);
350	}
351
352	/*
353	* Interrupt forwarding.
354	*/
355	CPUMSetHyperState(pVCpu, pVM->vmm.s.pfnCallTrampolineRC, pVCpu->vmm.s.pbEMTStackBottomRC, 0, 0);
356	CPUMPushHyper(pVCpu, 0);
357	CPUMPushHyper(pVCpu, VMMGC_DO_TESTCASE_HYPER_INTERRUPT);
358	CPUMPushHyper(pVCpu, pVM->pVMRC);
359	CPUMPushHyper(pVCpu, 3 * sizeof(RTRCPTR)); /* stack frame size */
360	CPUMPushHyper(pVCpu, RCPtrEP); /* what to call */
361	Log(("trampoline=%x\n", pVM->vmm.s.pfnCallTrampolineRC));
362
363	/*
364	* Switch and do da thing.
365	*/
366	RTPrintf("VMM: interrupt forwarding...\n"); RTStrmFlush(g_pStdOut); RTThreadSleep(250);
367	i = 0;
368	uint64_t tsBegin = RTTimeNanoTS();
369	uint64_t TickStart = ASMReadTSC();
370	Assert(CPUMGetHyperCR3(pVCpu) && CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu));
371	do
372	{
373	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN, 0);
374	if (RT_LIKELY(rc == VINF_SUCCESS))
375	rc = pVCpu->vmm.s.iLastGZRc;
376	if (RT_FAILURE(rc))
377	{
378	Log(("VMM: GC returned fatal %Rra in iteration %d\n", rc, i));
379	VMMR3FatalDump(pVM, pVCpu, rc);
380	return rc;
381	}
382	i++;
383	if (!(i % 32))
384	Log(("VMM: iteration %d, esi=%08x edi=%08x ebx=%08x\n",
385	i, CPUMGetHyperESI(pVCpu), CPUMGetHyperEDI(pVCpu), CPUMGetHyperEBX(pVCpu)));
386	} while (rc == VINF_EM_RAW_INTERRUPT_HYPER);
387	uint64_t TickEnd = ASMReadTSC();
388	uint64_t tsEnd = RTTimeNanoTS();
389
390	uint64_t Elapsed = tsEnd - tsBegin;
391	uint64_t PerIteration = Elapsed / (uint64_t)i;
392	uint64_t cTicksElapsed = TickEnd - TickStart;
393	uint64_t cTicksPerIteration = cTicksElapsed / (uint64_t)i;
394
395	RTPrintf("VMM: %8d interrupts in %11llu ns (%11llu ticks), %10llu ns/iteration (%11llu ticks)\n",
396	i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration);
397	Log(("VMM: %8d interrupts in %11llu ns (%11llu ticks), %10llu ns/iteration (%11llu ticks)\n",
398	i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration));
399
400	/*
401	* These forced actions are not necessary for the test and trigger breakpoints too.
402	*/
403	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TRPM_SYNC_IDT);
404	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_SELM_SYNC_TSS);
405
406	/*
407	* Profile switching.
408	*/
409	RTPrintf("VMM: profiling switcher...\n");
410	Log(("VMM: profiling switcher...\n"));
411	uint64_t TickMin = ~0;
412	tsBegin = RTTimeNanoTS();
413	TickStart = ASMReadTSC();
414	Assert(CPUMGetHyperCR3(pVCpu) && CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu));
415	for (i = 0; i < 1000000; i++)
416	{
417	CPUMSetHyperState(pVCpu, pVM->vmm.s.pfnCallTrampolineRC, pVCpu->vmm.s.pbEMTStackBottomRC, 0, 0);
418	CPUMPushHyper(pVCpu, 0);
419	CPUMPushHyper(pVCpu, VMMGC_DO_TESTCASE_NOP);
420	CPUMPushHyper(pVCpu, pVM->pVMRC);
421	CPUMPushHyper(pVCpu, 3 * sizeof(RTRCPTR)); /* stack frame size */
422	CPUMPushHyper(pVCpu, RCPtrEP); /* what to call */
423
424	uint64_t TickThisStart = ASMReadTSC();
425	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN, 0);
426	if (RT_LIKELY(rc == VINF_SUCCESS))
427	rc = pVCpu->vmm.s.iLastGZRc;
428	uint64_t TickThisElapsed = ASMReadTSC() - TickThisStart;
429	if (RT_FAILURE(rc))
430	{
431	Log(("VMM: GC returned fatal %Rra in iteration %d\n", rc, i));
432	VMMR3FatalDump(pVM, pVCpu, rc);
433	return rc;
434	}
435	if (TickThisElapsed < TickMin)
436	TickMin = TickThisElapsed;
437	}
438	TickEnd = ASMReadTSC();
439	tsEnd = RTTimeNanoTS();
440
441	Elapsed = tsEnd - tsBegin;
442	PerIteration = Elapsed / (uint64_t)i;
443	cTicksElapsed = TickEnd - TickStart;
444	cTicksPerIteration = cTicksElapsed / (uint64_t)i;
445
446	RTPrintf("VMM: %8d cycles in %11llu ns (%11lld ticks), %10llu ns/iteration (%11lld ticks) Min %11lld ticks\n",
447	i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration, TickMin);
448	Log(("VMM: %8d cycles in %11llu ns (%11lld ticks), %10llu ns/iteration (%11lld ticks) Min %11lld ticks\n",
449	i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration, TickMin));
450
451	rc = VINF_SUCCESS;
452	}
453	else
454	AssertMsgFailed(("Failed to resolved VMMGC.gc::VMMGCEntry(), rc=%Rrc\n", rc));
455	#endif
456	return rc;
457	}
458
459	#define SYNC_SEL(pHyperCtx, reg) \
460	if (pHyperCtx->reg.Sel) \
461	{ \
462	DBGFSELINFO selInfo; \
463	int rc2 = SELMR3GetShadowSelectorInfo(pVM, pHyperCtx->reg.Sel, &selInfo); \
464	AssertRC(rc2); \
465	\
466	pHyperCtx->reg.u64Base = selInfo.GCPtrBase; \
467	pHyperCtx->reg.u32Limit = selInfo.cbLimit; \
468	pHyperCtx->reg.Attr.n.u1Present = selInfo.u.Raw.Gen.u1Present; \
469	pHyperCtx->reg.Attr.n.u1DefBig = selInfo.u.Raw.Gen.u1DefBig; \
470	pHyperCtx->reg.Attr.n.u1Granularity = selInfo.u.Raw.Gen.u1Granularity; \
471	pHyperCtx->reg.Attr.n.u4Type = selInfo.u.Raw.Gen.u4Type; \
472	pHyperCtx->reg.Attr.n.u2Dpl = selInfo.u.Raw.Gen.u2Dpl; \
473	pHyperCtx->reg.Attr.n.u1DescType = selInfo.u.Raw.Gen.u1DescType; \
474	pHyperCtx->reg.Attr.n.u1Long = selInfo.u.Raw.Gen.u1Long; \
475	}
476
477	/* execute the switch. */
478	VMMR3DECL(int) VMMDoHmTest(PVM pVM)
479	{
480	uint32_t i;
481	int rc;
482	PCPUMCTX pHyperCtx, pGuestCtx;
483	RTGCPHYS CR3Phys = 0x0; /* fake address */
484	PVMCPU pVCpu = &pVM->aCpus[0];
485
486	if (!HMR3IsAllowed(pVM))
487	{
488	RTPrintf("VMM: Hardware accelerated test not available!\n");
489	return VERR_ACCESS_DENIED;
490	}
491
492	/*
493	* These forced actions are not necessary for the test and trigger breakpoints too.
494	*/
495	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TRPM_SYNC_IDT);
496	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_SELM_SYNC_TSS);
497
498	/* Enable mapping of the hypervisor into the shadow page table. */
499	uint32_t cb;
500	rc = PGMR3MappingsSize(pVM, &cb);
501	AssertRCReturn(rc, rc);
502
503	/* Pretend the mappings are now fixed; to force a refresh of the reserved PDEs. */
504	rc = PGMR3MappingsFix(pVM, MM_HYPER_AREA_ADDRESS, cb);
505	AssertRCReturn(rc, rc);
506
507	pHyperCtx = CPUMGetHyperCtxPtr(pVCpu);
508
509	pHyperCtx->cr0 = X86_CR0_PE \| X86_CR0_WP \| X86_CR0_PG \| X86_CR0_TS \| X86_CR0_ET \| X86_CR0_NE \| X86_CR0_MP;
510	pHyperCtx->cr4 = X86_CR4_PGE \| X86_CR4_OSFSXR \| X86_CR4_OSXMMEEXCPT;
511	PGMChangeMode(pVCpu, pHyperCtx->cr0, pHyperCtx->cr4, pHyperCtx->msrEFER);
512	PGMSyncCR3(pVCpu, pHyperCtx->cr0, CR3Phys, pHyperCtx->cr4, true);
513
514	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3);
515	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TIMER);
516	VM_FF_CLEAR(pVM, VM_FF_TM_VIRTUAL_SYNC);
517	VM_FF_CLEAR(pVM, VM_FF_REQUEST);
518
519	/*
520	* Setup stack for calling VMMGCEntry().
521	*/
522	RTRCPTR RCPtrEP;
523	rc = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, "VMMGCEntry", &RCPtrEP);
524	if (RT_SUCCESS(rc))
525	{
526	RTPrintf("VMM: VMMGCEntry=%RRv\n", RCPtrEP);
527
528	pHyperCtx = CPUMGetHyperCtxPtr(pVCpu);
529
530	/* Fill in hidden selector registers for the hypervisor state. */
531	SYNC_SEL(pHyperCtx, cs);
532	SYNC_SEL(pHyperCtx, ds);
533	SYNC_SEL(pHyperCtx, es);
534	SYNC_SEL(pHyperCtx, fs);
535	SYNC_SEL(pHyperCtx, gs);
536	SYNC_SEL(pHyperCtx, ss);
537	SYNC_SEL(pHyperCtx, tr);
538
539	/*
540	* Profile switching.
541	*/
542	RTPrintf("VMM: profiling switcher...\n");
543	Log(("VMM: profiling switcher...\n"));
544	uint64_t TickMin = ~0;
545	uint64_t tsBegin = RTTimeNanoTS();
546	uint64_t TickStart = ASMReadTSC();
547	for (i = 0; i < 1000000; i++)
548	{
549	CPUMSetHyperState(pVCpu, pVM->vmm.s.pfnCallTrampolineRC, pVCpu->vmm.s.pbEMTStackBottomRC, 0, 0);
550	CPUMPushHyper(pVCpu, 0);
551	CPUMPushHyper(pVCpu, VMMGC_DO_TESTCASE_HM_NOP);
552	CPUMPushHyper(pVCpu, pVM->pVMRC);
553	CPUMPushHyper(pVCpu, 3 * sizeof(RTRCPTR)); /* stack frame size */
554	CPUMPushHyper(pVCpu, RCPtrEP); /* what to call */
555
556	pHyperCtx = CPUMGetHyperCtxPtr(pVCpu);
557	pGuestCtx = CPUMQueryGuestCtxPtr(pVCpu);
558
559	/* Copy the hypervisor context to make sure we have a valid guest context. */
560	pGuestCtx = pHyperCtx;
561	pGuestCtx->cr3 = CR3Phys;
562
563	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3);
564	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TIMER);
565	VM_FF_CLEAR(pVM, VM_FF_TM_VIRTUAL_SYNC);
566
567	uint64_t TickThisStart = ASMReadTSC();
568	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_HM_RUN, 0);
569	uint64_t TickThisElapsed = ASMReadTSC() - TickThisStart;
570	if (RT_FAILURE(rc))
571	{
572	Log(("VMM: R0 returned fatal %Rrc in iteration %d\n", rc, i));
573	VMMR3FatalDump(pVM, pVCpu, rc);
574	return rc;
575	}
576	if (TickThisElapsed < TickMin)
577	TickMin = TickThisElapsed;
578	}
579	uint64_t TickEnd = ASMReadTSC();
580	uint64_t tsEnd = RTTimeNanoTS();
581
582	uint64_t Elapsed = tsEnd - tsBegin;
583	uint64_t PerIteration = Elapsed / (uint64_t)i;
584	uint64_t cTicksElapsed = TickEnd - TickStart;
585	uint64_t cTicksPerIteration = cTicksElapsed / (uint64_t)i;
586
587	RTPrintf("VMM: %8d cycles in %11llu ns (%11lld ticks), %10llu ns/iteration (%11lld ticks) Min %11lld ticks\n",
588	i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration, TickMin);
589	Log(("VMM: %8d cycles in %11llu ns (%11lld ticks), %10llu ns/iteration (%11lld ticks) Min %11lld ticks\n",
590	i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration, TickMin));
591
592	rc = VINF_SUCCESS;
593	}
594	else
595	AssertMsgFailed(("Failed to resolved VMMGC.gc::VMMGCEntry(), rc=%Rrc\n", rc));
596
597	return rc;
598	}
599

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source: vbox/trunk/src/VBox/VMM/VMMR3/VMMTests.cpp@ 45530

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