VMMTests.cpp@ 35333

Last change on this file since 35333 was 35333, checked in by vboxsync, 14 years ago
VMM source reorg.
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1	/* $Id: VMMTests.cpp 35333 2010-12-27 12:10:56Z vboxsync $ */
2	/** @file
3	* VMM - The Virtual Machine Monitor Core, Tests.
4	*/
5
6	/*
7	* Copyright (C) 2006-2007 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.h>
26	#include <VBox/pdmapi.h>
27	#include <VBox/cpum.h>
28	#include <VBox/dbg.h>
29	#include <VBox/mm.h>
30	#include <VBox/trpm.h>
31	#include <VBox/selm.h>
32	#include "VMMInternal.h"
33	#include <VBox/vm.h>
34	#include <VBox/err.h>
35	#include <VBox/param.h>
36	#include <VBox/x86.h>
37	#include <VBox/hwaccm.h>
38
39	#include <iprt/assert.h>
40	#include <iprt/asm.h>
41	#include <iprt/time.h>
42	#include <iprt/stream.h>
43	#include <iprt/string.h>
44
45
46	/**
47	* Performs a testcase.
48	*
49	* @returns return value from the test.
50	* @param pVM The VM handle.
51	* @param enmTestcase The testcase operation to perform.
52	* @param uVariation The testcase variation id.
53	*/
54	static int vmmR3DoGCTest(PVM pVM, VMMGCOPERATION enmTestcase, unsigned uVariation)
55	{
56	PVMCPU pVCpu = &pVM->aCpus[0];
57
58	RTRCPTR RCPtrEP;
59	int rc = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, "VMMGCEntry", &RCPtrEP);
60	if (RT_FAILURE(rc))
61	return rc;
62
63	CPUMHyperSetCtxCore(pVCpu, NULL);
64	memset(pVCpu->vmm.s.pbEMTStackR3, 0xaa, VMM_STACK_SIZE);
65	CPUMSetHyperESP(pVCpu, pVCpu->vmm.s.pbEMTStackBottomRC); /* Clear the stack. */
66	CPUMPushHyper(pVCpu, uVariation);
67	CPUMPushHyper(pVCpu, enmTestcase);
68	CPUMPushHyper(pVCpu, pVM->pVMRC);
69	CPUMPushHyper(pVCpu, 3 * sizeof(RTRCPTR)); /* stack frame size */
70	CPUMPushHyper(pVCpu, RCPtrEP); /* what to call */
71	CPUMSetHyperEIP(pVCpu, pVM->vmm.s.pfnCallTrampolineRC);
72	Assert(CPUMGetHyperCR3(pVCpu) && CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu));
73	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN, 0);
74	if (RT_LIKELY(rc == VINF_SUCCESS))
75	rc = pVCpu->vmm.s.iLastGZRc;
76	return rc;
77	}
78
79
80	/**
81	* Performs a trap test.
82	*
83	* @returns Return value from the trap test.
84	* @param pVM The VM handle.
85	* @param u8Trap The trap number to test.
86	* @param uVariation The testcase variation.
87	* @param rcExpect The expected result.
88	* @param u32Eax The expected eax value.
89	* @param pszFaultEIP The fault address. Pass NULL if this isn't available or doesn't apply.
90	* @param pszDesc The test description.
91	*/
92	static int vmmR3DoTrapTest(PVM pVM, uint8_t u8Trap, unsigned uVariation, int rcExpect, uint32_t u32Eax, const char pszFaultEIP, const char pszDesc)
93	{
94	PVMCPU pVCpu = &pVM->aCpus[0];
95
96	RTPrintf("VMM: testing 0%x / %d - %s\n", u8Trap, uVariation, pszDesc);
97
98	RTRCPTR RCPtrEP;
99	int rc = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, "VMMGCEntry", &RCPtrEP);
100	if (RT_FAILURE(rc))
101	return rc;
102
103	CPUMHyperSetCtxCore(pVCpu, NULL);
104	memset(pVCpu->vmm.s.pbEMTStackR3, 0xaa, VMM_STACK_SIZE);
105	CPUMSetHyperESP(pVCpu, pVCpu->vmm.s.pbEMTStackBottomRC); /* Clear the stack. */
106	CPUMPushHyper(pVCpu, uVariation);
107	CPUMPushHyper(pVCpu, u8Trap + VMMGC_DO_TESTCASE_TRAP_FIRST);
108	CPUMPushHyper(pVCpu, pVM->pVMRC);
109	CPUMPushHyper(pVCpu, 3 * sizeof(RTRCPTR)); /* stack frame size */
110	CPUMPushHyper(pVCpu, RCPtrEP); /* what to call */
111	CPUMSetHyperEIP(pVCpu, pVM->vmm.s.pfnCallTrampolineRC);
112	Assert(CPUMGetHyperCR3(pVCpu) && CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu));
113	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN, 0);
114	if (RT_LIKELY(rc == VINF_SUCCESS))
115	rc = pVCpu->vmm.s.iLastGZRc;
116	bool fDump = false;
117	if (rc != rcExpect)
118	{
119	RTPrintf("VMM: FAILURE - rc=%Rrc expected %Rrc\n", rc, rcExpect);
120	if (rc != VERR_NOT_IMPLEMENTED)
121	fDump = true;
122	}
123	else if ( rcExpect != VINF_SUCCESS
124	&& u8Trap != 8 /* double fault doesn't dare set TrapNo. */
125	&& u8Trap != 3 /* guest only, we're not in guest. */
126	&& u8Trap != 1 /* guest only, we're not in guest. */
127	&& u8Trap != TRPMGetTrapNo(pVCpu))
128	{
129	RTPrintf("VMM: FAILURE - Trap %#x expected %#x\n", TRPMGetTrapNo(pVCpu), u8Trap);
130	fDump = true;
131	}
132	else if (pszFaultEIP)
133	{
134	RTRCPTR RCPtrFault;
135	int rc2 = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, pszFaultEIP, &RCPtrFault);
136	if (RT_FAILURE(rc2))
137	RTPrintf("VMM: FAILURE - Failed to resolve symbol '%s', %Rrc!\n", pszFaultEIP, rc);
138	else if (RCPtrFault != CPUMGetHyperEIP(pVCpu))
139	{
140	RTPrintf("VMM: FAILURE - EIP=%08RX32 expected %RRv (%s)\n", CPUMGetHyperEIP(pVCpu), RCPtrFault, pszFaultEIP);
141	fDump = true;
142	}
143	}
144	else if (rcExpect != VINF_SUCCESS)
145	{
146	if (CPUMGetHyperSS(pVCpu) == SELMGetHyperDS(pVM))
147	RTPrintf("VMM: FAILURE - ss=%x expected %x\n", CPUMGetHyperSS(pVCpu), SELMGetHyperDS(pVM));
148	if (CPUMGetHyperES(pVCpu) == SELMGetHyperDS(pVM))
149	RTPrintf("VMM: FAILURE - es=%x expected %x\n", CPUMGetHyperES(pVCpu), SELMGetHyperDS(pVM));
150	if (CPUMGetHyperDS(pVCpu) == SELMGetHyperDS(pVM))
151	RTPrintf("VMM: FAILURE - ds=%x expected %x\n", CPUMGetHyperDS(pVCpu), SELMGetHyperDS(pVM));
152	if (CPUMGetHyperFS(pVCpu) == SELMGetHyperDS(pVM))
153	RTPrintf("VMM: FAILURE - fs=%x expected %x\n", CPUMGetHyperFS(pVCpu), SELMGetHyperDS(pVM));
154	if (CPUMGetHyperGS(pVCpu) == SELMGetHyperDS(pVM))
155	RTPrintf("VMM: FAILURE - gs=%x expected %x\n", CPUMGetHyperGS(pVCpu), SELMGetHyperDS(pVM));
156	if (CPUMGetHyperEDI(pVCpu) == 0x01234567)
157	RTPrintf("VMM: FAILURE - edi=%x expected %x\n", CPUMGetHyperEDI(pVCpu), 0x01234567);
158	if (CPUMGetHyperESI(pVCpu) == 0x42000042)
159	RTPrintf("VMM: FAILURE - esi=%x expected %x\n", CPUMGetHyperESI(pVCpu), 0x42000042);
160	if (CPUMGetHyperEBP(pVCpu) == 0xffeeddcc)
161	RTPrintf("VMM: FAILURE - ebp=%x expected %x\n", CPUMGetHyperEBP(pVCpu), 0xffeeddcc);
162	if (CPUMGetHyperEBX(pVCpu) == 0x89abcdef)
163	RTPrintf("VMM: FAILURE - ebx=%x expected %x\n", CPUMGetHyperEBX(pVCpu), 0x89abcdef);
164	if (CPUMGetHyperECX(pVCpu) == 0xffffaaaa)
165	RTPrintf("VMM: FAILURE - ecx=%x expected %x\n", CPUMGetHyperECX(pVCpu), 0xffffaaaa);
166	if (CPUMGetHyperEDX(pVCpu) == 0x77778888)
167	RTPrintf("VMM: FAILURE - edx=%x expected %x\n", CPUMGetHyperEDX(pVCpu), 0x77778888);
168	if (CPUMGetHyperEAX(pVCpu) == u32Eax)
169	RTPrintf("VMM: FAILURE - eax=%x expected %x\n", CPUMGetHyperEAX(pVCpu), u32Eax);
170	}
171	if (fDump)
172	VMMR3FatalDump(pVM, pVCpu, rc);
173	return rc;
174	}
175
176
177	/* execute the switch. */
178	VMMR3DECL(int) VMMDoTest(PVM pVM)
179	{
180	#if 1
181	PVMCPU pVCpu = &pVM->aCpus[0];
182
183	#ifdef NO_SUPCALLR0VMM
184	RTPrintf("NO_SUPCALLR0VMM\n");
185	return VINF_SUCCESS;
186	#endif
187
188	/*
189	* Setup stack for calling VMMGCEntry().
190	*/
191	RTRCPTR RCPtrEP;
192	int rc = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, "VMMGCEntry", &RCPtrEP);
193	if (RT_SUCCESS(rc))
194	{
195	RTPrintf("VMM: VMMGCEntry=%RRv\n", RCPtrEP);
196
197	/*
198	* Test various crashes which we must be able to recover from.
199	*/
200	vmmR3DoTrapTest(pVM, 0x3, 0, VINF_EM_DBG_HYPER_ASSERTION, 0xf0f0f0f0, "vmmGCTestTrap3_FaultEIP", "int3");
201	vmmR3DoTrapTest(pVM, 0x3, 1, VINF_EM_DBG_HYPER_ASSERTION, 0xf0f0f0f0, "vmmGCTestTrap3_FaultEIP", "int3 WP");
202
203	#if defined(DEBUG_bird) /* guess most people would like to skip these since they write to com1. */
204	vmmR3DoTrapTest(pVM, 0x8, 0, VERR_TRPM_PANIC, 0x00000000, "vmmGCTestTrap8_FaultEIP", "#DF [#PG]");
205	SELMR3Relocate(pVM); /* this resets the busy flag of the Trap 08 TSS */
206	bool f;
207	rc = CFGMR3QueryBool(CFGMR3GetRoot(pVM), "DoubleFault", &f);
208	#if !defined(DEBUG_bird)
209	if (RT_SUCCESS(rc) && f)
210	#endif
211	{
212	/* see triple fault warnings in SELM and VMMGC.cpp. */
213	vmmR3DoTrapTest(pVM, 0x8, 1, VERR_TRPM_PANIC, 0x00000000, "vmmGCTestTrap8_FaultEIP", "#DF [#PG] WP");
214	SELMR3Relocate(pVM); /* this resets the busy flag of the Trap 08 TSS */
215	}
216	#endif
217
218	vmmR3DoTrapTest(pVM, 0xd, 0, VERR_TRPM_DONT_PANIC, 0xf0f0f0f0, "vmmGCTestTrap0d_FaultEIP", "ltr #GP");
219	///@todo find a better \#GP case, on intel ltr will \#PF (busy update?) and not \#GP.
220	//vmmR3DoTrapTest(pVM, 0xd, 1, VERR_TRPM_DONT_PANIC, 0xf0f0f0f0, "vmmGCTestTrap0d_FaultEIP", "ltr #GP WP");
221
222	vmmR3DoTrapTest(pVM, 0xe, 0, VERR_TRPM_DONT_PANIC, 0x00000000, "vmmGCTestTrap0e_FaultEIP", "#PF (NULL)");
223	vmmR3DoTrapTest(pVM, 0xe, 1, VERR_TRPM_DONT_PANIC, 0x00000000, "vmmGCTestTrap0e_FaultEIP", "#PF (NULL) WP");
224	vmmR3DoTrapTest(pVM, 0xe, 2, VINF_SUCCESS, 0x00000000, NULL, "#PF w/Tmp Handler");
225	vmmR3DoTrapTest(pVM, 0xe, 4, VINF_SUCCESS, 0x00000000, NULL, "#PF w/Tmp Handler and bad fs");
226
227	/*
228	* Set a debug register and perform a context switch.
229	*/
230	rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
231	if (rc != VINF_SUCCESS)
232	{
233	RTPrintf("VMM: Nop test failed, rc=%Rrc not VINF_SUCCESS\n", rc);
234	return rc;
235	}
236
237	/* a harmless breakpoint */
238	RTPrintf("VMM: testing hardware bp at 0x10000 (not hit)\n");
239	DBGFADDRESS Addr;
240	DBGFR3AddrFromFlat(pVM, &Addr, 0x10000);
241	RTUINT iBp0;
242	rc = DBGFR3BpSetReg(pVM, &Addr, 0, ~(uint64_t)0, X86_DR7_RW_EO, 1, &iBp0);
243	AssertReleaseRC(rc);
244	rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
245	if (rc != VINF_SUCCESS)
246	{
247	RTPrintf("VMM: DR0=0x10000 test failed with rc=%Rrc!\n", rc);
248	return rc;
249	}
250
251	/* a bad one at VMMGCEntry */
252	RTPrintf("VMM: testing hardware bp at VMMGCEntry (hit)\n");
253	DBGFR3AddrFromFlat(pVM, &Addr, RCPtrEP);
254	RTUINT iBp1;
255	rc = DBGFR3BpSetReg(pVM, &Addr, 0, ~(uint64_t)0, X86_DR7_RW_EO, 1, &iBp1);
256	AssertReleaseRC(rc);
257	rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
258	if (rc != VINF_EM_DBG_HYPER_BREAKPOINT)
259	{
260	RTPrintf("VMM: DR1=VMMGCEntry test failed with rc=%Rrc! expected VINF_EM_RAW_BREAKPOINT_HYPER\n", rc);
261	return rc;
262	}
263
264	/* resume the breakpoint */
265	RTPrintf("VMM: resuming hyper after breakpoint\n");
266	CPUMSetHyperEFlags(pVCpu, CPUMGetHyperEFlags(pVCpu) \| X86_EFL_RF);
267	rc = VMMR3ResumeHyper(pVM, pVCpu);
268	if (rc != VINF_SUCCESS)
269	{
270	RTPrintf("VMM: failed to resume on hyper breakpoint, rc=%Rrc\n", rc);
271	return rc;
272	}
273
274	/* engage the breakpoint again and try single stepping. */
275	RTPrintf("VMM: testing hardware bp at VMMGCEntry + stepping\n");
276	rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
277	if (rc != VINF_EM_DBG_HYPER_BREAKPOINT)
278	{
279	RTPrintf("VMM: DR1=VMMGCEntry test failed with rc=%Rrc! expected VINF_EM_RAW_BREAKPOINT_HYPER\n", rc);
280	return rc;
281	}
282
283	RTGCUINTREG OldPc = CPUMGetHyperEIP(pVCpu);
284	RTPrintf("%RGr=>", OldPc);
285	unsigned i;
286	for (i = 0; i < 8; i++)
287	{
288	CPUMSetHyperEFlags(pVCpu, CPUMGetHyperEFlags(pVCpu) \| X86_EFL_TF \| X86_EFL_RF);
289	rc = VMMR3ResumeHyper(pVM, pVCpu);
290	if (rc != VINF_EM_DBG_HYPER_STEPPED)
291	{
292	RTPrintf("\nVMM: failed to step on hyper breakpoint, rc=%Rrc\n", rc);
293	return rc;
294	}
295	RTGCUINTREG Pc = CPUMGetHyperEIP(pVCpu);
296	RTPrintf("%RGr=>", Pc);
297	if (Pc == OldPc)
298	{
299	RTPrintf("\nVMM: step failed, PC: %RGr -> %RGr\n", OldPc, Pc);
300	return VERR_GENERAL_FAILURE;
301	}
302	OldPc = Pc;
303	}
304	RTPrintf("ok\n");
305
306	/* done, clear it */
307	if ( RT_FAILURE(DBGFR3BpClear(pVM, iBp0))
308	\|\| RT_FAILURE(DBGFR3BpClear(pVM, iBp1)))
309	{
310	RTPrintf("VMM: Failed to clear breakpoints!\n");
311	return VERR_GENERAL_FAILURE;
312	}
313	rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
314	if (rc != VINF_SUCCESS)
315	{
316	RTPrintf("VMM: NOP failed, rc=%Rrc\n", rc);
317	return rc;
318	}
319
320	/*
321	* Interrupt masking.
322	*/
323	RTPrintf("VMM: interrupt masking...\n"); RTStrmFlush(g_pStdOut); RTThreadSleep(250);
324	for (i = 0; i < 10000; i++)
325	{
326	uint64_t StartTick = ASMReadTSC();
327	rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_INTERRUPT_MASKING, 0);
328	if (rc != VINF_SUCCESS)
329	{
330	RTPrintf("VMM: Interrupt masking failed: rc=%Rrc\n", rc);
331	return rc;
332	}
333	uint64_t Ticks = ASMReadTSC() - StartTick;
334	if (Ticks < (SUPGetCpuHzFromGIP(g_pSUPGlobalInfoPage) / 10000))
335	RTPrintf("Warning: Ticks=%RU64 (< %RU64)\n", Ticks, SUPGetCpuHzFromGIP(g_pSUPGlobalInfoPage) / 10000);
336	}
337
338	/*
339	* Interrupt forwarding.
340	*/
341	CPUMHyperSetCtxCore(pVCpu, NULL);
342	CPUMSetHyperESP(pVCpu, pVCpu->vmm.s.pbEMTStackBottomRC); /* Clear the stack. */
343	CPUMPushHyper(pVCpu, 0);
344	CPUMPushHyper(pVCpu, VMMGC_DO_TESTCASE_HYPER_INTERRUPT);
345	CPUMPushHyper(pVCpu, pVM->pVMRC);
346	CPUMPushHyper(pVCpu, 3 * sizeof(RTRCPTR)); /* stack frame size */
347	CPUMPushHyper(pVCpu, RCPtrEP); /* what to call */
348	CPUMSetHyperEIP(pVCpu, pVM->vmm.s.pfnCallTrampolineRC);
349	Log(("trampoline=%x\n", pVM->vmm.s.pfnCallTrampolineRC));
350
351	/*
352	* Switch and do da thing.
353	*/
354	RTPrintf("VMM: interrupt forwarding...\n"); RTStrmFlush(g_pStdOut); RTThreadSleep(250);
355	i = 0;
356	uint64_t tsBegin = RTTimeNanoTS();
357	uint64_t TickStart = ASMReadTSC();
358	Assert(CPUMGetHyperCR3(pVCpu) && CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu));
359	do
360	{
361	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN, 0);
362	if (RT_LIKELY(rc == VINF_SUCCESS))
363	rc = pVCpu->vmm.s.iLastGZRc;
364	if (RT_FAILURE(rc))
365	{
366	Log(("VMM: GC returned fatal %Rra in iteration %d\n", rc, i));
367	VMMR3FatalDump(pVM, pVCpu, rc);
368	return rc;
369	}
370	i++;
371	if (!(i % 32))
372	Log(("VMM: iteration %d, esi=%08x edi=%08x ebx=%08x\n",
373	i, CPUMGetHyperESI(pVCpu), CPUMGetHyperEDI(pVCpu), CPUMGetHyperEBX(pVCpu)));
374	} while (rc == VINF_EM_RAW_INTERRUPT_HYPER);
375	uint64_t TickEnd = ASMReadTSC();
376	uint64_t tsEnd = RTTimeNanoTS();
377
378	uint64_t Elapsed = tsEnd - tsBegin;
379	uint64_t PerIteration = Elapsed / (uint64_t)i;
380	uint64_t cTicksElapsed = TickEnd - TickStart;
381	uint64_t cTicksPerIteration = cTicksElapsed / (uint64_t)i;
382
383	RTPrintf("VMM: %8d interrupts in %11llu ns (%11llu ticks), %10llu ns/iteration (%11llu ticks)\n",
384	i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration);
385	Log(("VMM: %8d interrupts in %11llu ns (%11llu ticks), %10llu ns/iteration (%11llu ticks)\n",
386	i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration));
387
388	/*
389	* These forced actions are not necessary for the test and trigger breakpoints too.
390	*/
391	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TRPM_SYNC_IDT);
392	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_SELM_SYNC_TSS);
393
394	/*
395	* Profile switching.
396	*/
397	RTPrintf("VMM: profiling switcher...\n");
398	Log(("VMM: profiling switcher...\n"));
399	uint64_t TickMin = ~0;
400	tsBegin = RTTimeNanoTS();
401	TickStart = ASMReadTSC();
402	Assert(CPUMGetHyperCR3(pVCpu) && CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu));
403	for (i = 0; i < 1000000; i++)
404	{
405	CPUMHyperSetCtxCore(pVCpu, NULL);
406	CPUMSetHyperESP(pVCpu, pVCpu->vmm.s.pbEMTStackBottomRC); /* Clear the stack. */
407	CPUMPushHyper(pVCpu, 0);
408	CPUMPushHyper(pVCpu, VMMGC_DO_TESTCASE_NOP);
409	CPUMPushHyper(pVCpu, pVM->pVMRC);
410	CPUMPushHyper(pVCpu, 3 * sizeof(RTRCPTR)); /* stack frame size */
411	CPUMPushHyper(pVCpu, RCPtrEP); /* what to call */
412	CPUMSetHyperEIP(pVCpu, pVM->vmm.s.pfnCallTrampolineRC);
413
414	uint64_t TickThisStart = ASMReadTSC();
415	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN, 0);
416	if (RT_LIKELY(rc == VINF_SUCCESS))
417	rc = pVCpu->vmm.s.iLastGZRc;
418	uint64_t TickThisElapsed = ASMReadTSC() - TickThisStart;
419	if (RT_FAILURE(rc))
420	{
421	Log(("VMM: GC returned fatal %Rra in iteration %d\n", rc, i));
422	VMMR3FatalDump(pVM, pVCpu, rc);
423	return rc;
424	}
425	if (TickThisElapsed < TickMin)
426	TickMin = TickThisElapsed;
427	}
428	TickEnd = ASMReadTSC();
429	tsEnd = RTTimeNanoTS();
430
431	Elapsed = tsEnd - tsBegin;
432	PerIteration = Elapsed / (uint64_t)i;
433	cTicksElapsed = TickEnd - TickStart;
434	cTicksPerIteration = cTicksElapsed / (uint64_t)i;
435
436	RTPrintf("VMM: %8d cycles in %11llu ns (%11lld ticks), %10llu ns/iteration (%11lld ticks) Min %11lld ticks\n",
437	i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration, TickMin);
438	Log(("VMM: %8d cycles in %11llu ns (%11lld ticks), %10llu ns/iteration (%11lld ticks) Min %11lld ticks\n",
439	i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration, TickMin));
440
441	rc = VINF_SUCCESS;
442	}
443	else
444	AssertMsgFailed(("Failed to resolved VMMGC.gc::VMMGCEntry(), rc=%Rrc\n", rc));
445	#endif
446	return rc;
447	}
448
449	#define SYNC_SEL(pHyperCtx, reg) \
450	if (pHyperCtx->reg) \
451	{ \
452	DBGFSELINFO selInfo; \
453	int rc2 = SELMR3GetShadowSelectorInfo(pVM, pHyperCtx->reg, &selInfo); \
454	AssertRC(rc2); \
455	\
456	pHyperCtx->reg##Hid.u64Base = selInfo.GCPtrBase; \
457	pHyperCtx->reg##Hid.u32Limit = selInfo.cbLimit; \
458	pHyperCtx->reg##Hid.Attr.n.u1Present = selInfo.u.Raw.Gen.u1Present; \
459	pHyperCtx->reg##Hid.Attr.n.u1DefBig = selInfo.u.Raw.Gen.u1DefBig; \
460	pHyperCtx->reg##Hid.Attr.n.u1Granularity = selInfo.u.Raw.Gen.u1Granularity; \
461	pHyperCtx->reg##Hid.Attr.n.u4Type = selInfo.u.Raw.Gen.u4Type; \
462	pHyperCtx->reg##Hid.Attr.n.u2Dpl = selInfo.u.Raw.Gen.u2Dpl; \
463	pHyperCtx->reg##Hid.Attr.n.u1DescType = selInfo.u.Raw.Gen.u1DescType; \
464	pHyperCtx->reg##Hid.Attr.n.u1Long = selInfo.u.Raw.Gen.u1Long; \
465	}
466
467	/* execute the switch. */
468	VMMR3DECL(int) VMMDoHwAccmTest(PVM pVM)
469	{
470	uint32_t i;
471	int rc;
472	PCPUMCTX pHyperCtx, pGuestCtx;
473	RTGCPHYS CR3Phys = 0x0; /* fake address */
474	PVMCPU pVCpu = &pVM->aCpus[0];
475
476	if (!HWACCMR3IsAllowed(pVM))
477	{
478	RTPrintf("VMM: Hardware accelerated test not available!\n");
479	return VERR_ACCESS_DENIED;
480	}
481
482	/*
483	* These forced actions are not necessary for the test and trigger breakpoints too.
484	*/
485	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TRPM_SYNC_IDT);
486	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_SELM_SYNC_TSS);
487
488	/* Enable mapping of the hypervisor into the shadow page table. */
489	uint32_t cb;
490	rc = PGMR3MappingsSize(pVM, &cb);
491	AssertRCReturn(rc, rc);
492
493	/* Pretend the mappings are now fixed; to force a refresh of the reserved PDEs. */
494	rc = PGMR3MappingsFix(pVM, MM_HYPER_AREA_ADDRESS, cb);
495	AssertRCReturn(rc, rc);
496
497	CPUMQueryHyperCtxPtr(pVCpu, &pHyperCtx);
498
499	pHyperCtx->cr0 = X86_CR0_PE \| X86_CR0_WP \| X86_CR0_PG \| X86_CR0_TS \| X86_CR0_ET \| X86_CR0_NE \| X86_CR0_MP;
500	pHyperCtx->cr4 = X86_CR4_PGE \| X86_CR4_OSFSXR \| X86_CR4_OSXMMEEXCPT;
501	PGMChangeMode(pVCpu, pHyperCtx->cr0, pHyperCtx->cr4, pHyperCtx->msrEFER);
502	PGMSyncCR3(pVCpu, pHyperCtx->cr0, CR3Phys, pHyperCtx->cr4, true);
503
504	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3);
505	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TIMER);
506	VM_FF_CLEAR(pVM, VM_FF_TM_VIRTUAL_SYNC);
507	VM_FF_CLEAR(pVM, VM_FF_REQUEST);
508
509	/*
510	* Setup stack for calling VMMGCEntry().
511	*/
512	RTRCPTR RCPtrEP;
513	rc = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, "VMMGCEntry", &RCPtrEP);
514	if (RT_SUCCESS(rc))
515	{
516	RTPrintf("VMM: VMMGCEntry=%RRv\n", RCPtrEP);
517
518	CPUMQueryHyperCtxPtr(pVCpu, &pHyperCtx);
519
520	/* Fill in hidden selector registers for the hypervisor state. */
521	SYNC_SEL(pHyperCtx, cs);
522	SYNC_SEL(pHyperCtx, ds);
523	SYNC_SEL(pHyperCtx, es);
524	SYNC_SEL(pHyperCtx, fs);
525	SYNC_SEL(pHyperCtx, gs);
526	SYNC_SEL(pHyperCtx, ss);
527	SYNC_SEL(pHyperCtx, tr);
528
529	/*
530	* Profile switching.
531	*/
532	RTPrintf("VMM: profiling switcher...\n");
533	Log(("VMM: profiling switcher...\n"));
534	uint64_t TickMin = ~0;
535	uint64_t tsBegin = RTTimeNanoTS();
536	uint64_t TickStart = ASMReadTSC();
537	for (i = 0; i < 1000000; i++)
538	{
539	CPUMHyperSetCtxCore(pVCpu, NULL);
540
541	CPUMSetHyperESP(pVCpu, pVCpu->vmm.s.pbEMTStackBottomRC); /* Clear the stack. */
542	CPUMPushHyper(pVCpu, 0);
543	CPUMPushHyper(pVCpu, VMMGC_DO_TESTCASE_HWACCM_NOP);
544	CPUMPushHyper(pVCpu, pVM->pVMRC);
545	CPUMPushHyper(pVCpu, 3 * sizeof(RTRCPTR)); /* stack frame size */
546	CPUMPushHyper(pVCpu, RCPtrEP); /* what to call */
547	CPUMSetHyperEIP(pVCpu, pVM->vmm.s.pfnCallTrampolineRC);
548
549	CPUMQueryHyperCtxPtr(pVCpu, &pHyperCtx);
550	pGuestCtx = CPUMQueryGuestCtxPtr(pVCpu);
551
552	/* Copy the hypervisor context to make sure we have a valid guest context. */
553	pGuestCtx = pHyperCtx;
554	pGuestCtx->cr3 = CR3Phys;
555
556	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3);
557	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TIMER);
558	VM_FF_CLEAR(pVM, VM_FF_TM_VIRTUAL_SYNC);
559
560	uint64_t TickThisStart = ASMReadTSC();
561	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_HWACC_RUN, 0);
562	uint64_t TickThisElapsed = ASMReadTSC() - TickThisStart;
563	if (RT_FAILURE(rc))
564	{
565	Log(("VMM: R0 returned fatal %Rrc in iteration %d\n", rc, i));
566	VMMR3FatalDump(pVM, pVCpu, rc);
567	return rc;
568	}
569	if (TickThisElapsed < TickMin)
570	TickMin = TickThisElapsed;
571	}
572	uint64_t TickEnd = ASMReadTSC();
573	uint64_t tsEnd = RTTimeNanoTS();
574
575	uint64_t Elapsed = tsEnd - tsBegin;
576	uint64_t PerIteration = Elapsed / (uint64_t)i;
577	uint64_t cTicksElapsed = TickEnd - TickStart;
578	uint64_t cTicksPerIteration = cTicksElapsed / (uint64_t)i;
579
580	RTPrintf("VMM: %8d cycles in %11llu ns (%11lld ticks), %10llu ns/iteration (%11lld ticks) Min %11lld ticks\n",
581	i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration, TickMin);
582	Log(("VMM: %8d cycles in %11llu ns (%11lld ticks), %10llu ns/iteration (%11lld ticks) Min %11lld ticks\n",
583	i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration, TickMin));
584
585	rc = VINF_SUCCESS;
586	}
587	else
588	AssertMsgFailed(("Failed to resolved VMMGC.gc::VMMGCEntry(), rc=%Rrc\n", rc));
589
590	return rc;
591	}
592

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source: vbox/trunk/src/VBox/VMM/VMMR3/VMMTests.cpp@ 35333

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