VMMTests.cpp@ 42062

Last change on this file since 42062 was 41985, checked in by vboxsync, 12 years ago
VMM: Fixed tstVMM (single stepping ++ in raw-mode code).
Property svn:eol-style set to `native` Property svn:keywords set to `Id Revision`
File size: 24.2 KB

Line
1	/* $Id: VMMTests.cpp 41985 2012-07-02 15:00:27Z 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/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/hwaccm.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	/**
54	* Performs a testcase.
55	*
56	* @returns return value from the test.
57	* @param pVM Pointer to the VM.
58	* @param enmTestcase The testcase operation to perform.
59	* @param uVariation The testcase variation id.
60	*/
61	static int vmmR3DoGCTest(PVM pVM, VMMGCOPERATION enmTestcase, unsigned uVariation)
62	{
63	PVMCPU pVCpu = &pVM->aCpus[0];
64
65	RTRCPTR RCPtrEP;
66	int rc = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, "VMMGCEntry", &RCPtrEP);
67	if (RT_FAILURE(rc))
68	return rc;
69
70	CPUMSetHyperState(pVCpu, pVM->vmm.s.pfnCallTrampolineRC, pVCpu->vmm.s.pbEMTStackBottomRC, 0, 0);
71	vmmR3TestClearStack(pVCpu);
72	CPUMPushHyper(pVCpu, uVariation);
73	CPUMPushHyper(pVCpu, enmTestcase);
74	CPUMPushHyper(pVCpu, pVM->pVMRC);
75	CPUMPushHyper(pVCpu, 3 * sizeof(RTRCPTR)); /* stack frame size */
76	CPUMPushHyper(pVCpu, RCPtrEP); /* what to call */
77	Assert(CPUMGetHyperCR3(pVCpu) && CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu));
78	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN, 0);
79	if (RT_LIKELY(rc == VINF_SUCCESS))
80	rc = pVCpu->vmm.s.iLastGZRc;
81	return rc;
82	}
83
84
85	/**
86	* Performs a trap test.
87	*
88	* @returns Return value from the trap test.
89	* @param pVM Pointer to the VM.
90	* @param u8Trap The trap number to test.
91	* @param uVariation The testcase variation.
92	* @param rcExpect The expected result.
93	* @param u32Eax The expected eax value.
94	* @param pszFaultEIP The fault address. Pass NULL if this isn't available or doesn't apply.
95	* @param pszDesc The test description.
96	*/
97	static int vmmR3DoTrapTest(PVM pVM, uint8_t u8Trap, unsigned uVariation, int rcExpect, uint32_t u32Eax, const char pszFaultEIP, const char pszDesc)
98	{
99	PVMCPU pVCpu = &pVM->aCpus[0];
100
101	RTPrintf("VMM: testing 0%x / %d - %s\n", u8Trap, uVariation, pszDesc);
102
103	RTRCPTR RCPtrEP;
104	int rc = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, "VMMGCEntry", &RCPtrEP);
105	if (RT_FAILURE(rc))
106	return rc;
107
108	CPUMSetHyperState(pVCpu, pVM->vmm.s.pfnCallTrampolineRC, pVCpu->vmm.s.pbEMTStackBottomRC, 0, 0);
109	vmmR3TestClearStack(pVCpu);
110	CPUMPushHyper(pVCpu, uVariation);
111	CPUMPushHyper(pVCpu, u8Trap + VMMGC_DO_TESTCASE_TRAP_FIRST);
112	CPUMPushHyper(pVCpu, pVM->pVMRC);
113	CPUMPushHyper(pVCpu, 3 * sizeof(RTRCPTR)); /* stack frame size */
114	CPUMPushHyper(pVCpu, RCPtrEP); /* what to call */
115	Assert(CPUMGetHyperCR3(pVCpu) && CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu));
116	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN, 0);
117	if (RT_LIKELY(rc == VINF_SUCCESS))
118	rc = pVCpu->vmm.s.iLastGZRc;
119	bool fDump = false;
120	if (rc != rcExpect)
121	{
122	RTPrintf("VMM: FAILURE - rc=%Rrc expected %Rrc\n", rc, rcExpect);
123	if (rc != VERR_NOT_IMPLEMENTED)
124	fDump = true;
125	}
126	else if ( rcExpect != VINF_SUCCESS
127	&& u8Trap != 8 /* double fault doesn't dare set TrapNo. */
128	&& u8Trap != 3 /* guest only, we're not in guest. */
129	&& u8Trap != 1 /* guest only, we're not in guest. */
130	&& u8Trap != TRPMGetTrapNo(pVCpu))
131	{
132	RTPrintf("VMM: FAILURE - Trap %#x expected %#x\n", TRPMGetTrapNo(pVCpu), u8Trap);
133	fDump = true;
134	}
135	else if (pszFaultEIP)
136	{
137	RTRCPTR RCPtrFault;
138	int rc2 = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, pszFaultEIP, &RCPtrFault);
139	if (RT_FAILURE(rc2))
140	RTPrintf("VMM: FAILURE - Failed to resolve symbol '%s', %Rrc!\n", pszFaultEIP, rc);
141	else if (RCPtrFault != CPUMGetHyperEIP(pVCpu))
142	{
143	RTPrintf("VMM: FAILURE - EIP=%08RX32 expected %RRv (%s)\n", CPUMGetHyperEIP(pVCpu), RCPtrFault, pszFaultEIP);
144	fDump = true;
145	}
146	}
147	else if (rcExpect != VINF_SUCCESS)
148	{
149	if (CPUMGetHyperSS(pVCpu) == SELMGetHyperDS(pVM))
150	RTPrintf("VMM: FAILURE - ss=%x expected %x\n", CPUMGetHyperSS(pVCpu), SELMGetHyperDS(pVM));
151	if (CPUMGetHyperES(pVCpu) == SELMGetHyperDS(pVM))
152	RTPrintf("VMM: FAILURE - es=%x expected %x\n", CPUMGetHyperES(pVCpu), SELMGetHyperDS(pVM));
153	if (CPUMGetHyperDS(pVCpu) == SELMGetHyperDS(pVM))
154	RTPrintf("VMM: FAILURE - ds=%x expected %x\n", CPUMGetHyperDS(pVCpu), SELMGetHyperDS(pVM));
155	if (CPUMGetHyperFS(pVCpu) == SELMGetHyperDS(pVM))
156	RTPrintf("VMM: FAILURE - fs=%x expected %x\n", CPUMGetHyperFS(pVCpu), SELMGetHyperDS(pVM));
157	if (CPUMGetHyperGS(pVCpu) == SELMGetHyperDS(pVM))
158	RTPrintf("VMM: FAILURE - gs=%x expected %x\n", CPUMGetHyperGS(pVCpu), SELMGetHyperDS(pVM));
159	if (CPUMGetHyperEDI(pVCpu) == 0x01234567)
160	RTPrintf("VMM: FAILURE - edi=%x expected %x\n", CPUMGetHyperEDI(pVCpu), 0x01234567);
161	if (CPUMGetHyperESI(pVCpu) == 0x42000042)
162	RTPrintf("VMM: FAILURE - esi=%x expected %x\n", CPUMGetHyperESI(pVCpu), 0x42000042);
163	if (CPUMGetHyperEBP(pVCpu) == 0xffeeddcc)
164	RTPrintf("VMM: FAILURE - ebp=%x expected %x\n", CPUMGetHyperEBP(pVCpu), 0xffeeddcc);
165	if (CPUMGetHyperEBX(pVCpu) == 0x89abcdef)
166	RTPrintf("VMM: FAILURE - ebx=%x expected %x\n", CPUMGetHyperEBX(pVCpu), 0x89abcdef);
167	if (CPUMGetHyperECX(pVCpu) == 0xffffaaaa)
168	RTPrintf("VMM: FAILURE - ecx=%x expected %x\n", CPUMGetHyperECX(pVCpu), 0xffffaaaa);
169	if (CPUMGetHyperEDX(pVCpu) == 0x77778888)
170	RTPrintf("VMM: FAILURE - edx=%x expected %x\n", CPUMGetHyperEDX(pVCpu), 0x77778888);
171	if (CPUMGetHyperEAX(pVCpu) == u32Eax)
172	RTPrintf("VMM: FAILURE - eax=%x expected %x\n", CPUMGetHyperEAX(pVCpu), u32Eax);
173	}
174	if (fDump)
175	VMMR3FatalDump(pVM, pVCpu, rc);
176	return rc;
177	}
178
179
180	/* execute the switch. */
181	VMMR3DECL(int) VMMDoTest(PVM pVM)
182	{
183	#if 1
184	PVMCPU pVCpu = &pVM->aCpus[0];
185
186	#ifdef NO_SUPCALLR0VMM
187	RTPrintf("NO_SUPCALLR0VMM\n");
188	return VINF_SUCCESS;
189	#endif
190
191	/*
192	* Setup stack for calling VMMGCEntry().
193	*/
194	RTRCPTR RCPtrEP;
195	int rc = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, "VMMGCEntry", &RCPtrEP);
196	if (RT_SUCCESS(rc))
197	{
198	RTPrintf("VMM: VMMGCEntry=%RRv\n", RCPtrEP);
199
200	/*
201	* Test various crashes which we must be able to recover from.
202	*/
203	vmmR3DoTrapTest(pVM, 0x3, 0, VINF_EM_DBG_HYPER_ASSERTION, 0xf0f0f0f0, "vmmGCTestTrap3_FaultEIP", "int3");
204	vmmR3DoTrapTest(pVM, 0x3, 1, VINF_EM_DBG_HYPER_ASSERTION, 0xf0f0f0f0, "vmmGCTestTrap3_FaultEIP", "int3 WP");
205
206	#if defined(DEBUG_bird) /* guess most people would like to skip these since they write to com1. */
207	vmmR3DoTrapTest(pVM, 0x8, 0, VERR_TRPM_PANIC, 0x00000000, "vmmGCTestTrap8_FaultEIP", "#DF [#PG]");
208	SELMR3Relocate(pVM); /* this resets the busy flag of the Trap 08 TSS */
209	bool f;
210	rc = CFGMR3QueryBool(CFGMR3GetRoot(pVM), "DoubleFault", &f);
211	#if !defined(DEBUG_bird)
212	if (RT_SUCCESS(rc) && f)
213	#endif
214	{
215	/* see triple fault warnings in SELM and VMMGC.cpp. */
216	vmmR3DoTrapTest(pVM, 0x8, 1, VERR_TRPM_PANIC, 0x00000000, "vmmGCTestTrap8_FaultEIP", "#DF [#PG] WP");
217	SELMR3Relocate(pVM); /* this resets the busy flag of the Trap 08 TSS */
218	}
219	#endif
220
221	vmmR3DoTrapTest(pVM, 0xd, 0, VERR_TRPM_DONT_PANIC, 0xf0f0f0f0, "vmmGCTestTrap0d_FaultEIP", "ltr #GP");
222	///@todo find a better \#GP case, on intel ltr will \#PF (busy update?) and not \#GP.
223	//vmmR3DoTrapTest(pVM, 0xd, 1, VERR_TRPM_DONT_PANIC, 0xf0f0f0f0, "vmmGCTestTrap0d_FaultEIP", "ltr #GP WP");
224
225	vmmR3DoTrapTest(pVM, 0xe, 0, VERR_TRPM_DONT_PANIC, 0x00000000, "vmmGCTestTrap0e_FaultEIP", "#PF (NULL)");
226	vmmR3DoTrapTest(pVM, 0xe, 1, VERR_TRPM_DONT_PANIC, 0x00000000, "vmmGCTestTrap0e_FaultEIP", "#PF (NULL) WP");
227	vmmR3DoTrapTest(pVM, 0xe, 2, VINF_SUCCESS, 0x00000000, NULL, "#PF w/Tmp Handler");
228	/* This test is no longer relevant as fs and gs are loaded with NULL
229	selectors and we will always return to HC if a #GP occurs while
230	returning to guest code.
231	vmmR3DoTrapTest(pVM, 0xe, 4, VINF_SUCCESS, 0x00000000, NULL, "#PF w/Tmp Handler and bad fs");
232	*/
233
234	/*
235	* Set a debug register and perform a context switch.
236	*/
237	rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
238	if (rc != VINF_SUCCESS)
239	{
240	RTPrintf("VMM: Nop test failed, rc=%Rrc not VINF_SUCCESS\n", rc);
241	return rc;
242	}
243
244	/* a harmless breakpoint */
245	RTPrintf("VMM: testing hardware bp at 0x10000 (not hit)\n");
246	DBGFADDRESS Addr;
247	DBGFR3AddrFromFlat(pVM, &Addr, 0x10000);
248	RTUINT iBp0;
249	rc = DBGFR3BpSetReg(pVM, &Addr, 0, ~(uint64_t)0, X86_DR7_RW_EO, 1, &iBp0);
250	AssertReleaseRC(rc);
251	rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
252	if (rc != VINF_SUCCESS)
253	{
254	RTPrintf("VMM: DR0=0x10000 test failed with rc=%Rrc!\n", rc);
255	return rc;
256	}
257
258	/* a bad one at VMMGCEntry */
259	RTPrintf("VMM: testing hardware bp at VMMGCEntry (hit)\n");
260	DBGFR3AddrFromFlat(pVM, &Addr, RCPtrEP);
261	RTUINT iBp1;
262	rc = DBGFR3BpSetReg(pVM, &Addr, 0, ~(uint64_t)0, X86_DR7_RW_EO, 1, &iBp1);
263	AssertReleaseRC(rc);
264	rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
265	if (rc != VINF_EM_DBG_HYPER_BREAKPOINT)
266	{
267	RTPrintf("VMM: DR1=VMMGCEntry test failed with rc=%Rrc! expected VINF_EM_RAW_BREAKPOINT_HYPER\n", rc);
268	return rc;
269	}
270
271	/* resume the breakpoint */
272	RTPrintf("VMM: resuming hyper after breakpoint\n");
273	CPUMSetHyperEFlags(pVCpu, CPUMGetHyperEFlags(pVCpu) \| X86_EFL_RF);
274	rc = VMMR3ResumeHyper(pVM, pVCpu);
275	if (rc != VINF_SUCCESS)
276	{
277	RTPrintf("VMM: failed to resume on hyper breakpoint, rc=%Rrc = KNOWN BUG\n", rc); /** @todo fix VMMR3ResumeHyper */
278	return rc;
279	}
280
281	/* engage the breakpoint again and try single stepping. */
282	RTPrintf("VMM: testing hardware bp at VMMGCEntry + stepping\n");
283	rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
284	if (rc != VINF_EM_DBG_HYPER_BREAKPOINT)
285	{
286	RTPrintf("VMM: DR1=VMMGCEntry test failed with rc=%Rrc! expected VINF_EM_RAW_BREAKPOINT_HYPER\n", rc);
287	return rc;
288	}
289
290	RTGCUINTREG OldPc = CPUMGetHyperEIP(pVCpu);
291	RTPrintf("%RGr=>", OldPc);
292	unsigned i;
293	for (i = 0; i < 8; i++)
294	{
295	CPUMSetHyperEFlags(pVCpu, CPUMGetHyperEFlags(pVCpu) \| X86_EFL_TF \| X86_EFL_RF);
296	rc = VMMR3ResumeHyper(pVM, pVCpu);
297	if (rc != VINF_EM_DBG_HYPER_STEPPED)
298	{
299	RTPrintf("\nVMM: failed to step on hyper breakpoint, rc=%Rrc\n", rc);
300	return rc;
301	}
302	RTGCUINTREG Pc = CPUMGetHyperEIP(pVCpu);
303	RTPrintf("%RGr=>", Pc);
304	if (Pc == OldPc)
305	{
306	RTPrintf("\nVMM: step failed, PC: %RGr -> %RGr\n", OldPc, Pc);
307	return VERR_GENERAL_FAILURE;
308	}
309	OldPc = Pc;
310	}
311	RTPrintf("ok\n");
312
313	/* done, clear it */
314	if ( RT_FAILURE(DBGFR3BpClear(pVM, iBp0))
315	\|\| RT_FAILURE(DBGFR3BpClear(pVM, iBp1)))
316	{
317	RTPrintf("VMM: Failed to clear breakpoints!\n");
318	return VERR_GENERAL_FAILURE;
319	}
320	rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_NOP, 0);
321	if (rc != VINF_SUCCESS)
322	{
323	RTPrintf("VMM: NOP failed, rc=%Rrc\n", rc);
324	return rc;
325	}
326
327	/*
328	* Interrupt masking.
329	*/
330	RTPrintf("VMM: interrupt masking...\n"); RTStrmFlush(g_pStdOut); RTThreadSleep(250);
331	for (i = 0; i < 10000; i++)
332	{
333	uint64_t StartTick = ASMReadTSC();
334	rc = vmmR3DoGCTest(pVM, VMMGC_DO_TESTCASE_INTERRUPT_MASKING, 0);
335	if (rc != VINF_SUCCESS)
336	{
337	RTPrintf("VMM: Interrupt masking failed: rc=%Rrc\n", rc);
338	return rc;
339	}
340	uint64_t Ticks = ASMReadTSC() - StartTick;
341	if (Ticks < (SUPGetCpuHzFromGIP(g_pSUPGlobalInfoPage) / 10000))
342	RTPrintf("Warning: Ticks=%RU64 (< %RU64)\n", Ticks, SUPGetCpuHzFromGIP(g_pSUPGlobalInfoPage) / 10000);
343	}
344
345	/*
346	* Interrupt forwarding.
347	*/
348	CPUMSetHyperState(pVCpu, pVM->vmm.s.pfnCallTrampolineRC, pVCpu->vmm.s.pbEMTStackBottomRC, 0, 0);
349	CPUMPushHyper(pVCpu, 0);
350	CPUMPushHyper(pVCpu, VMMGC_DO_TESTCASE_HYPER_INTERRUPT);
351	CPUMPushHyper(pVCpu, pVM->pVMRC);
352	CPUMPushHyper(pVCpu, 3 * sizeof(RTRCPTR)); /* stack frame size */
353	CPUMPushHyper(pVCpu, RCPtrEP); /* what to call */
354	Log(("trampoline=%x\n", pVM->vmm.s.pfnCallTrampolineRC));
355
356	/*
357	* Switch and do da thing.
358	*/
359	RTPrintf("VMM: interrupt forwarding...\n"); RTStrmFlush(g_pStdOut); RTThreadSleep(250);
360	i = 0;
361	uint64_t tsBegin = RTTimeNanoTS();
362	uint64_t TickStart = ASMReadTSC();
363	Assert(CPUMGetHyperCR3(pVCpu) && CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu));
364	do
365	{
366	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN, 0);
367	if (RT_LIKELY(rc == VINF_SUCCESS))
368	rc = pVCpu->vmm.s.iLastGZRc;
369	if (RT_FAILURE(rc))
370	{
371	Log(("VMM: GC returned fatal %Rra in iteration %d\n", rc, i));
372	VMMR3FatalDump(pVM, pVCpu, rc);
373	return rc;
374	}
375	i++;
376	if (!(i % 32))
377	Log(("VMM: iteration %d, esi=%08x edi=%08x ebx=%08x\n",
378	i, CPUMGetHyperESI(pVCpu), CPUMGetHyperEDI(pVCpu), CPUMGetHyperEBX(pVCpu)));
379	} while (rc == VINF_EM_RAW_INTERRUPT_HYPER);
380	uint64_t TickEnd = ASMReadTSC();
381	uint64_t tsEnd = RTTimeNanoTS();
382
383	uint64_t Elapsed = tsEnd - tsBegin;
384	uint64_t PerIteration = Elapsed / (uint64_t)i;
385	uint64_t cTicksElapsed = TickEnd - TickStart;
386	uint64_t cTicksPerIteration = cTicksElapsed / (uint64_t)i;
387
388	RTPrintf("VMM: %8d interrupts in %11llu ns (%11llu ticks), %10llu ns/iteration (%11llu ticks)\n",
389	i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration);
390	Log(("VMM: %8d interrupts in %11llu ns (%11llu ticks), %10llu ns/iteration (%11llu ticks)\n",
391	i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration));
392
393	/*
394	* These forced actions are not necessary for the test and trigger breakpoints too.
395	*/
396	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TRPM_SYNC_IDT);
397	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_SELM_SYNC_TSS);
398
399	/*
400	* Profile switching.
401	*/
402	RTPrintf("VMM: profiling switcher...\n");
403	Log(("VMM: profiling switcher...\n"));
404	uint64_t TickMin = ~0;
405	tsBegin = RTTimeNanoTS();
406	TickStart = ASMReadTSC();
407	Assert(CPUMGetHyperCR3(pVCpu) && CPUMGetHyperCR3(pVCpu) == PGMGetHyperCR3(pVCpu));
408	for (i = 0; i < 1000000; i++)
409	{
410	CPUMSetHyperState(pVCpu, pVM->vmm.s.pfnCallTrampolineRC, pVCpu->vmm.s.pbEMTStackBottomRC, 0, 0);
411	CPUMPushHyper(pVCpu, 0);
412	CPUMPushHyper(pVCpu, VMMGC_DO_TESTCASE_NOP);
413	CPUMPushHyper(pVCpu, pVM->pVMRC);
414	CPUMPushHyper(pVCpu, 3 * sizeof(RTRCPTR)); /* stack frame size */
415	CPUMPushHyper(pVCpu, RCPtrEP); /* what to call */
416
417	uint64_t TickThisStart = ASMReadTSC();
418	rc = SUPR3CallVMMR0Fast(pVM->pVMR0, VMMR0_DO_RAW_RUN, 0);
419	if (RT_LIKELY(rc == VINF_SUCCESS))
420	rc = pVCpu->vmm.s.iLastGZRc;
421	uint64_t TickThisElapsed = ASMReadTSC() - TickThisStart;
422	if (RT_FAILURE(rc))
423	{
424	Log(("VMM: GC returned fatal %Rra in iteration %d\n", rc, i));
425	VMMR3FatalDump(pVM, pVCpu, rc);
426	return rc;
427	}
428	if (TickThisElapsed < TickMin)
429	TickMin = TickThisElapsed;
430	}
431	TickEnd = ASMReadTSC();
432	tsEnd = RTTimeNanoTS();
433
434	Elapsed = tsEnd - tsBegin;
435	PerIteration = Elapsed / (uint64_t)i;
436	cTicksElapsed = TickEnd - TickStart;
437	cTicksPerIteration = cTicksElapsed / (uint64_t)i;
438
439	RTPrintf("VMM: %8d cycles in %11llu ns (%11lld ticks), %10llu ns/iteration (%11lld ticks) Min %11lld ticks\n",
440	i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration, TickMin);
441	Log(("VMM: %8d cycles in %11llu ns (%11lld ticks), %10llu ns/iteration (%11lld ticks) Min %11lld ticks\n",
442	i, Elapsed, cTicksElapsed, PerIteration, cTicksPerIteration, TickMin));
443
444	rc = VINF_SUCCESS;
445	}
446	else
447	AssertMsgFailed(("Failed to resolved VMMGC.gc::VMMGCEntry(), rc=%Rrc\n", rc));
448	#endif
449	return rc;
450	}
451
452	#define SYNC_SEL(pHyperCtx, reg) \
453	if (pHyperCtx->reg.Sel) \
454	{ \
455	DBGFSELINFO selInfo; \
456	int rc2 = SELMR3GetShadowSelectorInfo(pVM, pHyperCtx->reg.Sel, &selInfo); \
457	AssertRC(rc2); \
458	\
459	pHyperCtx->reg.u64Base = selInfo.GCPtrBase; \
460	pHyperCtx->reg.u32Limit = selInfo.cbLimit; \
461	pHyperCtx->reg.Attr.n.u1Present = selInfo.u.Raw.Gen.u1Present; \
462	pHyperCtx->reg.Attr.n.u1DefBig = selInfo.u.Raw.Gen.u1DefBig; \
463	pHyperCtx->reg.Attr.n.u1Granularity = selInfo.u.Raw.Gen.u1Granularity; \
464	pHyperCtx->reg.Attr.n.u4Type = selInfo.u.Raw.Gen.u4Type; \
465	pHyperCtx->reg.Attr.n.u2Dpl = selInfo.u.Raw.Gen.u2Dpl; \
466	pHyperCtx->reg.Attr.n.u1DescType = selInfo.u.Raw.Gen.u1DescType; \
467	pHyperCtx->reg.Attr.n.u1Long = selInfo.u.Raw.Gen.u1Long; \
468	}
469
470	/* execute the switch. */
471	VMMR3DECL(int) VMMDoHwAccmTest(PVM pVM)
472	{
473	uint32_t i;
474	int rc;
475	PCPUMCTX pHyperCtx, pGuestCtx;
476	RTGCPHYS CR3Phys = 0x0; /* fake address */
477	PVMCPU pVCpu = &pVM->aCpus[0];
478
479	if (!HWACCMR3IsAllowed(pVM))
480	{
481	RTPrintf("VMM: Hardware accelerated test not available!\n");
482	return VERR_ACCESS_DENIED;
483	}
484
485	/*
486	* These forced actions are not necessary for the test and trigger breakpoints too.
487	*/
488	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TRPM_SYNC_IDT);
489	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_SELM_SYNC_TSS);
490
491	/* Enable mapping of the hypervisor into the shadow page table. */
492	uint32_t cb;
493	rc = PGMR3MappingsSize(pVM, &cb);
494	AssertRCReturn(rc, rc);
495
496	/* Pretend the mappings are now fixed; to force a refresh of the reserved PDEs. */
497	rc = PGMR3MappingsFix(pVM, MM_HYPER_AREA_ADDRESS, cb);
498	AssertRCReturn(rc, rc);
499
500	pHyperCtx = CPUMGetHyperCtxPtr(pVCpu);
501
502	pHyperCtx->cr0 = X86_CR0_PE \| X86_CR0_WP \| X86_CR0_PG \| X86_CR0_TS \| X86_CR0_ET \| X86_CR0_NE \| X86_CR0_MP;
503	pHyperCtx->cr4 = X86_CR4_PGE \| X86_CR4_OSFSXR \| X86_CR4_OSXMMEEXCPT;
504	PGMChangeMode(pVCpu, pHyperCtx->cr0, pHyperCtx->cr4, pHyperCtx->msrEFER);
505	PGMSyncCR3(pVCpu, pHyperCtx->cr0, CR3Phys, pHyperCtx->cr4, true);
506
507	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TO_R3);
508	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TIMER);
509	VM_FF_CLEAR(pVM, VM_FF_TM_VIRTUAL_SYNC);
510	VM_FF_CLEAR(pVM, VM_FF_REQUEST);
511
512	/*
513	* Setup stack for calling VMMGCEntry().
514	*/
515	RTRCPTR RCPtrEP;
516	rc = PDMR3LdrGetSymbolRC(pVM, VMMGC_MAIN_MODULE_NAME, "VMMGCEntry", &RCPtrEP);
517	if (RT_SUCCESS(rc))
518	{
519	RTPrintf("VMM: VMMGCEntry=%RRv\n", RCPtrEP);
520
521	pHyperCtx = CPUMGetHyperCtxPtr(pVCpu);
522
523	/* Fill in hidden selector registers for the hypervisor state. */
524	SYNC_SEL(pHyperCtx, cs);
525	SYNC_SEL(pHyperCtx, ds);
526	SYNC_SEL(pHyperCtx, es);
527	SYNC_SEL(pHyperCtx, fs);
528	SYNC_SEL(pHyperCtx, gs);
529	SYNC_SEL(pHyperCtx, ss);
530	SYNC_SEL(pHyperCtx, tr);
531
532	/*
533	* Profile switching.
534	*/
535	RTPrintf("VMM: profiling switcher...\n");
536	Log(("VMM: profiling switcher...\n"));
537	uint64_t TickMin = ~0;
538	uint64_t tsBegin = RTTimeNanoTS();
539	uint64_t TickStart = ASMReadTSC();
540	for (i = 0; i < 1000000; i++)
541	{
542	CPUMSetHyperState(pVCpu, pVM->vmm.s.pfnCallTrampolineRC, pVCpu->vmm.s.pbEMTStackBottomRC, 0, 0);
543	CPUMPushHyper(pVCpu, 0);
544	CPUMPushHyper(pVCpu, VMMGC_DO_TESTCASE_HWACCM_NOP);
545	CPUMPushHyper(pVCpu, pVM->pVMRC);
546	CPUMPushHyper(pVCpu, 3 * sizeof(RTRCPTR)); /* stack frame size */
547	CPUMPushHyper(pVCpu, RCPtrEP); /* what to call */
548
549	pHyperCtx = CPUMGetHyperCtxPtr(pVCpu);
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@ 42062

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