GIMHv.cpp@ 55129

Last change on this file since 55129 was 55129, checked in by vboxsync, 10 years ago
VMM/GIM: Allow dynamic enabling of #UD traps and per-VCPU hypercalls.
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1	/* $Id: GIMHv.cpp 55129 2015-04-08 11:31:47Z vboxsync $ */
2	/** @file
3	* GIM - Guest Interface Manager, Hyper-V implementation.
4	*/
5
6	/*
7	* Copyright (C) 2014-2015 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	/*******************************************************************************
19	* Header Files *
20	*******************************************************************************/
21	#define LOG_GROUP LOG_GROUP_GIM
22	#include "GIMInternal.h"
23
24	#include <iprt/assert.h>
25	#include <iprt/err.h>
26	#include <iprt/string.h>
27	#include <iprt/mem.h>
28	#include <iprt/spinlock.h>
29
30	#include <VBox/vmm/cpum.h>
31	#include <VBox/vmm/ssm.h>
32	#include <VBox/vmm/vm.h>
33	#include <VBox/vmm/hm.h>
34	#include <VBox/vmm/pdmapi.h>
35	#include <VBox/version.h>
36
37
38	/*******************************************************************************
39	* Defined Constants And Macros *
40	*******************************************************************************/
41	//#define GIMHV_HYPERCALL "GIMHvHypercall"
42
43	/**
44	* GIM Hyper-V saved-state version.
45	*/
46	#define GIM_HV_SAVED_STATE_VERSION UINT32_C(1)
47
48
49	/*******************************************************************************
50	* Global Variables *
51	*******************************************************************************/
52	#ifdef VBOX_WITH_STATISTICS
53	# define GIMHV_MSRRANGE(a_uFirst, a_uLast, a_szName) \
54	{ (a_uFirst), (a_uLast), kCpumMsrRdFn_Gim, kCpumMsrWrFn_Gim, 0, 0, 0, 0, 0, a_szName, { 0 }, { 0 }, { 0 }, { 0 } }
55	#else
56	# define GIMHV_MSRRANGE(a_uFirst, a_uLast, a_szName) \
57	{ (a_uFirst), (a_uLast), kCpumMsrRdFn_Gim, kCpumMsrWrFn_Gim, 0, 0, 0, 0, 0, a_szName }
58	#endif
59
60	/**
61	* Array of MSR ranges supported by Hyper-V.
62	*/
63	static CPUMMSRRANGE const g_aMsrRanges_HyperV[] =
64	{
65	GIMHV_MSRRANGE(MSR_GIM_HV_RANGE0_START, MSR_GIM_HV_RANGE0_END, "Hyper-V range 0"),
66	GIMHV_MSRRANGE(MSR_GIM_HV_RANGE1_START, MSR_GIM_HV_RANGE1_END, "Hyper-V range 1"),
67	GIMHV_MSRRANGE(MSR_GIM_HV_RANGE2_START, MSR_GIM_HV_RANGE2_END, "Hyper-V range 2"),
68	GIMHV_MSRRANGE(MSR_GIM_HV_RANGE3_START, MSR_GIM_HV_RANGE3_END, "Hyper-V range 3"),
69	GIMHV_MSRRANGE(MSR_GIM_HV_RANGE4_START, MSR_GIM_HV_RANGE4_END, "Hyper-V range 4"),
70	GIMHV_MSRRANGE(MSR_GIM_HV_RANGE5_START, MSR_GIM_HV_RANGE5_END, "Hyper-V range 5"),
71	GIMHV_MSRRANGE(MSR_GIM_HV_RANGE6_START, MSR_GIM_HV_RANGE6_END, "Hyper-V range 6"),
72	GIMHV_MSRRANGE(MSR_GIM_HV_RANGE7_START, MSR_GIM_HV_RANGE7_END, "Hyper-V range 7"),
73	GIMHV_MSRRANGE(MSR_GIM_HV_RANGE8_START, MSR_GIM_HV_RANGE8_END, "Hyper-V range 8"),
74	GIMHV_MSRRANGE(MSR_GIM_HV_RANGE9_START, MSR_GIM_HV_RANGE9_END, "Hyper-V range 9"),
75	GIMHV_MSRRANGE(MSR_GIM_HV_RANGE10_START, MSR_GIM_HV_RANGE10_END, "Hyper-V range 10"),
76	GIMHV_MSRRANGE(MSR_GIM_HV_RANGE11_START, MSR_GIM_HV_RANGE11_END, "Hyper-V range 11")
77	};
78	#undef GIMHV_MSRRANGE
79
80
81	/**
82	* Initializes the Hyper-V GIM provider.
83	*
84	* @returns VBox status code.
85	* @param pVM Pointer to the VM.
86	* @param uVersion The interface version this VM should use.
87	*/
88	VMMR3_INT_DECL(int) gimR3HvInit(PVM pVM)
89	{
90	AssertReturn(pVM, VERR_INVALID_PARAMETER);
91	AssertReturn(pVM->gim.s.enmProviderId == GIMPROVIDERID_HYPERV, VERR_INTERNAL_ERROR_5);
92
93	int rc;
94	PGIMHV pHv = &pVM->gim.s.u.Hv;
95
96	/*
97	* Determine interface capabilities based on the version.
98	*/
99	if (!pVM->gim.s.u32Version)
100	{
101	/* Basic features. */
102	pHv->uBaseFeat = 0
103	//\| GIM_HV_BASE_FEAT_VP_RUNTIME_MSR
104	\| GIM_HV_BASE_FEAT_PART_TIME_REF_COUNT_MSR
105	//\| GIM_HV_BASE_FEAT_BASIC_SYNTH_IC
106	//\| GIM_HV_BASE_FEAT_SYNTH_TIMER_MSRS
107	\| GIM_HV_BASE_FEAT_APIC_ACCESS_MSRS
108	\| GIM_HV_BASE_FEAT_HYPERCALL_MSRS
109	\| GIM_HV_BASE_FEAT_VP_ID_MSR
110	\| GIM_HV_BASE_FEAT_VIRT_SYS_RESET_MSR
111	//\| GIM_HV_BASE_FEAT_STAT_PAGES_MSR
112	\| GIM_HV_BASE_FEAT_PART_REF_TSC_MSR
113	//\| GIM_HV_BASE_FEAT_GUEST_IDLE_STATE_MSR
114	\| GIM_HV_BASE_FEAT_TIMER_FREQ_MSRS
115	//\| GIM_HV_BASE_FEAT_DEBUG_MSRS
116	;
117
118	/* Miscellaneous features. */
119	pHv->uMiscFeat = GIM_HV_MISC_FEAT_TIMER_FREQ;
120
121	/* Hypervisor recommendations to the guest. */
122	pHv->uHyperHints = GIM_HV_HINT_MSR_FOR_SYS_RESET
123	\| GIM_HV_HINT_RELAX_TIME_CHECKS;
124	}
125
126	/*
127	* Populate the required fields in MMIO2 region records for registering.
128	*/
129	AssertCompile(GIM_HV_PAGE_SIZE == PAGE_SIZE);
130	PGIMMMIO2REGION pRegion = &pHv->aMmio2Regions[GIM_HV_HYPERCALL_PAGE_REGION_IDX];
131	pRegion->iRegion = GIM_HV_HYPERCALL_PAGE_REGION_IDX;
132	pRegion->fRCMapping = false;
133	pRegion->cbRegion = PAGE_SIZE;
134	pRegion->GCPhysPage = NIL_RTGCPHYS;
135	RTStrCopy(pRegion->szDescription, sizeof(pRegion->szDescription), "Hyper-V hypercall page");
136
137	pRegion = &pHv->aMmio2Regions[GIM_HV_REF_TSC_PAGE_REGION_IDX];
138	pRegion->iRegion = GIM_HV_REF_TSC_PAGE_REGION_IDX;
139	pRegion->fRCMapping = false;
140	pRegion->cbRegion = PAGE_SIZE;
141	pRegion->GCPhysPage = NIL_RTGCPHYS;
142	RTStrCopy(pRegion->szDescription, sizeof(pRegion->szDescription), "Hyper-V TSC page");
143
144	/*
145	* Make sure the CPU ID bit are in accordance to the Hyper-V
146	* requirement and other paranoia checks.
147	* See "Requirements for implementing the Microsoft hypervisor interface" spec.
148	*/
149	Assert(!(pHv->uPartFlags & ( GIM_HV_PART_FLAGS_CREATE_PART
150	\| GIM_HV_PART_FLAGS_ACCESS_MEMORY_POOL
151	\| GIM_HV_PART_FLAGS_ACCESS_PART_ID
152	\| GIM_HV_PART_FLAGS_ADJUST_MSG_BUFFERS
153	\| GIM_HV_PART_FLAGS_CREATE_PORT
154	\| GIM_HV_PART_FLAGS_ACCESS_STATS
155	\| GIM_HV_PART_FLAGS_CPU_MGMT
156	\| GIM_HV_PART_FLAGS_CPU_PROFILER)));
157	Assert((pHv->uBaseFeat & (GIM_HV_BASE_FEAT_HYPERCALL_MSRS \| GIM_HV_BASE_FEAT_VP_ID_MSR))
158	== (GIM_HV_BASE_FEAT_HYPERCALL_MSRS \| GIM_HV_BASE_FEAT_VP_ID_MSR));
159	for (unsigned i = 0; i < RT_ELEMENTS(pHv->aMmio2Regions); i++)
160	{
161	PCGIMMMIO2REGION pcCur = &pHv->aMmio2Regions[i];
162	Assert(!pcCur->fRCMapping);
163	Assert(!pcCur->fMapped);
164	Assert(pcCur->GCPhysPage == NIL_RTGCPHYS);
165	}
166
167	/*
168	* Expose HVP (Hypervisor Present) bit to the guest.
169	*/
170	CPUMSetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_HVP);
171
172	/*
173	* Modify the standard hypervisor leaves for Hyper-V.
174	*/
175	CPUMCPUIDLEAF HyperLeaf;
176	RT_ZERO(HyperLeaf);
177	HyperLeaf.uLeaf = UINT32_C(0x40000000);
178	HyperLeaf.uEax = UINT32_C(0x40000006); /* Minimum value for Hyper-V is 0x40000005. */
179	HyperLeaf.uEbx = 0x7263694D; /* 'Micr' */
180	HyperLeaf.uEcx = 0x666F736F; /* 'osof' */
181	HyperLeaf.uEdx = 0x76482074; /* 't Hv' */
182	rc = CPUMR3CpuIdInsert(pVM, &HyperLeaf);
183	AssertLogRelRCReturn(rc, rc);
184
185	HyperLeaf.uLeaf = UINT32_C(0x40000001);
186	HyperLeaf.uEax = 0x31237648; /* 'Hv#1' */
187	HyperLeaf.uEbx = 0; /* Reserved */
188	HyperLeaf.uEcx = 0; /* Reserved */
189	HyperLeaf.uEdx = 0; /* Reserved */
190	rc = CPUMR3CpuIdInsert(pVM, &HyperLeaf);
191	AssertLogRelRCReturn(rc, rc);
192
193	/*
194	* Add Hyper-V specific leaves.
195	*/
196	HyperLeaf.uLeaf = UINT32_C(0x40000002); /* MBZ until MSR_GIM_HV_GUEST_OS_ID is set by the guest. */
197	HyperLeaf.uEax = 0;
198	HyperLeaf.uEbx = 0;
199	HyperLeaf.uEcx = 0;
200	HyperLeaf.uEdx = 0;
201	rc = CPUMR3CpuIdInsert(pVM, &HyperLeaf);
202	AssertLogRelRCReturn(rc, rc);
203
204	HyperLeaf.uLeaf = UINT32_C(0x40000003);
205	HyperLeaf.uEax = pHv->uBaseFeat;
206	HyperLeaf.uEbx = pHv->uPartFlags;
207	HyperLeaf.uEcx = pHv->uPowMgmtFeat;
208	HyperLeaf.uEdx = pHv->uMiscFeat;
209	rc = CPUMR3CpuIdInsert(pVM, &HyperLeaf);
210	AssertLogRelRCReturn(rc, rc);
211
212	HyperLeaf.uLeaf = UINT32_C(0x40000004);
213	HyperLeaf.uEax = pHv->uHyperHints;
214	HyperLeaf.uEbx = 0xffffffff;
215	HyperLeaf.uEcx = 0;
216	HyperLeaf.uEdx = 0;
217	rc = CPUMR3CpuIdInsert(pVM, &HyperLeaf);
218	AssertLogRelRCReturn(rc, rc);
219
220	/*
221	* Insert all MSR ranges of Hyper-V.
222	*/
223	for (unsigned i = 0; i < RT_ELEMENTS(g_aMsrRanges_HyperV); i++)
224	{
225	rc = CPUMR3MsrRangesInsert(pVM, &g_aMsrRanges_HyperV[i]);
226	AssertLogRelRCReturn(rc, rc);
227	}
228
229	return VINF_SUCCESS;
230	}
231
232
233	/**
234	* Initializes remaining bits of the Hyper-V provider.
235	*
236	* This is called after initializing HM and almost all other VMM components.
237	*
238	* @returns VBox status code.
239	* @param pVM Pointer to the VM.
240	*/
241	VMMR3_INT_DECL(int) gimR3HvInitCompleted(PVM pVM)
242	{
243	PGIMHV pHv = &pVM->gim.s.u.Hv;
244
245	/*
246	* Determine interface capabilities based on the version.
247	*/
248	if (!pVM->gim.s.u32Version)
249	{
250	/* Hypervisor capabilities; features used by the hypervisor. */
251	pHv->uHyperCaps = HMIsNestedPagingActive(pVM) ? GIM_HV_HOST_FEAT_NESTED_PAGING : 0;
252	pHv->uHyperCaps \|= HMAreMsrBitmapsAvailable(pVM) ? GIM_HV_HOST_FEAT_MSR_BITMAP : 0;
253	}
254
255	CPUMCPUIDLEAF HyperLeaf;
256	RT_ZERO(HyperLeaf);
257	HyperLeaf.uLeaf = UINT32_C(0x40000006);
258	HyperLeaf.uEax = pHv->uHyperCaps;
259	HyperLeaf.uEbx = 0;
260	HyperLeaf.uEcx = 0;
261	HyperLeaf.uEdx = 0;
262	int rc = CPUMR3CpuIdInsert(pVM, &HyperLeaf);
263	AssertLogRelRCReturn(rc, rc);
264
265	return rc;
266	}
267
268
269	#if 0
270	VMMR3_INT_DECL(int) gimR3HvInitFinalize(PVM pVM)
271	{
272	pVM->gim.s.pfnHypercallR3 = &GIMHvHypercall;
273	if (!HMIsEnabled(pVM))
274	{
275	rc = PDMR3LdrGetSymbolRC(pVM, NULL /* pszModule */, GIMHV_HYPERCALL, &pVM->gim.s.pfnHypercallRC);
276	AssertRCReturn(rc, rc);
277	}
278	rc = PDMR3LdrGetSymbolR0(pVM, NULL /* pszModule */, GIMHV_HYPERCALL, &pVM->gim.s.pfnHypercallR0);
279	AssertRCReturn(rc, rc);
280	}
281	#endif
282
283
284	/**
285	* Terminates the Hyper-V GIM provider.
286	*
287	* @returns VBox status code.
288	* @param pVM Pointer to the VM.
289	*/
290	VMMR3_INT_DECL(int) gimR3HvTerm(PVM pVM)
291	{
292	gimR3HvReset(pVM);
293	return VINF_SUCCESS;
294	}
295
296
297	/**
298	* Applies relocations to data and code managed by this component.
299	*
300	* This function will be called at init and whenever the VMM need to relocate
301	* itself inside the GC.
302	*
303	* @param pVM Pointer to the VM.
304	* @param offDelta Relocation delta relative to old location.
305	*/
306	VMMR3_INT_DECL(void) gimR3HvRelocate(PVM pVM, RTGCINTPTR offDelta)
307	{
308	#if 0
309	int rc = PDMR3LdrGetSymbolRC(pVM, NULL /* pszModule */, GIMHV_HYPERCALL, &pVM->gim.s.pfnHypercallRC);
310	AssertFatalRC(rc);
311	#endif
312	}
313
314
315	/**
316	* This resets Hyper-V provider MSRs and unmaps whatever Hyper-V regions that
317	* the guest may have mapped.
318	*
319	* This is called when the VM is being reset.
320	*
321	* @param pVM Pointer to the VM.
322	* @thread EMT(0).
323	*/
324	VMMR3_INT_DECL(void) gimR3HvReset(PVM pVM)
325	{
326	VM_ASSERT_EMT0(pVM);
327
328	/*
329	* Unmap MMIO2 pages that the guest may have setup.
330	*/
331	LogRel(("GIM: HyperV: Resetting Hyper-V MMIO2 regions and MSRs\n"));
332	PGIMHV pHv = &pVM->gim.s.u.Hv;
333	for (unsigned i = 0; i < RT_ELEMENTS(pHv->aMmio2Regions); i++)
334	{
335	PGIMMMIO2REGION pRegion = &pHv->aMmio2Regions[i];
336	GIMR3Mmio2Unmap(pVM, pRegion);
337	}
338
339	/*
340	* Reset MSRs.
341	*/
342	pHv->u64GuestOsIdMsr = 0;
343	pHv->u64HypercallMsr = 0;
344	pHv->u64TscPageMsr = 0;
345	}
346
347
348	/**
349	* Returns a pointer to the MMIO2 regions supported by Hyper-V.
350	*
351	* @returns Pointer to an array of MMIO2 regions.
352	* @param pVM Pointer to the VM.
353	* @param pcRegions Where to store the number of regions in the array.
354	*/
355	VMMR3_INT_DECL(PGIMMMIO2REGION) gimR3HvGetMmio2Regions(PVM pVM, uint32_t *pcRegions)
356	{
357	Assert(GIMIsEnabled(pVM));
358	PGIMHV pHv = &pVM->gim.s.u.Hv;
359
360	*pcRegions = RT_ELEMENTS(pHv->aMmio2Regions);
361	Assert(pcRegions <= UINT8_MAX); / See PGMR3PhysMMIO2Register(). */
362	return pHv->aMmio2Regions;
363	}
364
365
366	/**
367	* Hyper-V state-save operation.
368	*
369	* @returns VBox status code.
370	* @param pVM Pointer to the VM.
371	* @param pSSM Pointer to the SSM handle.
372	*/
373	VMMR3_INT_DECL(int) gimR3HvSave(PVM pVM, PSSMHANDLE pSSM)
374	{
375	PCGIMHV pcHv = &pVM->gim.s.u.Hv;
376
377	/*
378	* Save the Hyper-V SSM version.
379	*/
380	SSMR3PutU32(pSSM, GIM_HV_SAVED_STATE_VERSION);
381
382	/*
383	* Save per-VM MSRs.
384	*/
385	SSMR3PutU64(pSSM, pcHv->u64GuestOsIdMsr);
386	SSMR3PutU64(pSSM, pcHv->u64HypercallMsr);
387	SSMR3PutU64(pSSM, pcHv->u64TscPageMsr);
388
389	/*
390	* Save Hyper-V features / capabilities.
391	*/
392	SSMR3PutU32(pSSM, pcHv->uBaseFeat);
393	SSMR3PutU32(pSSM, pcHv->uPartFlags);
394	SSMR3PutU32(pSSM, pcHv->uPowMgmtFeat);
395	SSMR3PutU32(pSSM, pcHv->uMiscFeat);
396	SSMR3PutU32(pSSM, pcHv->uHyperHints);
397	SSMR3PutU32(pSSM, pcHv->uHyperCaps);
398
399	/*
400	* Save the Hypercall region.
401	*/
402	PCGIMMMIO2REGION pcRegion = &pcHv->aMmio2Regions[GIM_HV_HYPERCALL_PAGE_REGION_IDX];
403	SSMR3PutU8(pSSM, pcRegion->iRegion);
404	SSMR3PutBool(pSSM, pcRegion->fRCMapping);
405	SSMR3PutU32(pSSM, pcRegion->cbRegion);
406	SSMR3PutGCPhys(pSSM, pcRegion->GCPhysPage);
407	SSMR3PutStrZ(pSSM, pcRegion->szDescription);
408
409	/*
410	* Save the reference TSC region.
411	*/
412	pcRegion = &pcHv->aMmio2Regions[GIM_HV_REF_TSC_PAGE_REGION_IDX];
413	SSMR3PutU8(pSSM, pcRegion->iRegion);
414	SSMR3PutBool(pSSM, pcRegion->fRCMapping);
415	SSMR3PutU32(pSSM, pcRegion->cbRegion);
416	SSMR3PutGCPhys(pSSM, pcRegion->GCPhysPage);
417	SSMR3PutStrZ(pSSM, pcRegion->szDescription);
418	/* Save the TSC sequence so we can bump it on restore (as the CPU frequency/offset may change). */
419	uint32_t uTscSequence = 0;
420	if ( pcRegion->fMapped
421	&& MSR_GIM_HV_REF_TSC_IS_ENABLED(pcHv->u64TscPageMsr))
422	{
423	PCGIMHVREFTSC pcRefTsc = (PCGIMHVREFTSC)pcRegion->pvPageR3;
424	uTscSequence = pcRefTsc->u32TscSequence;
425	}
426
427	return SSMR3PutU32(pSSM, uTscSequence);
428	}
429
430
431	/**
432	* Hyper-V state-load operation, final pass.
433	*
434	* @returns VBox status code.
435	* @param pVM Pointer to the VM.
436	* @param pSSM Pointer to the SSM handle.
437	* @param uSSMVersion The GIM saved-state version.
438	*/
439	VMMR3_INT_DECL(int) gimR3HvLoad(PVM pVM, PSSMHANDLE pSSM, uint32_t uSSMVersion)
440	{
441	PGIMHV pHv = &pVM->gim.s.u.Hv;
442
443	/*
444	* Load the Hyper-V SSM version first.
445	*/
446	uint32_t uHvSavedStatVersion;
447	int rc = SSMR3GetU32(pSSM, &uHvSavedStatVersion);
448	AssertRCReturn(rc, rc);
449	if (uHvSavedStatVersion != GIM_HV_SAVED_STATE_VERSION)
450	return SSMR3SetLoadError(pSSM, VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION, RT_SRC_POS,
451	N_("Unsupported Hyper-V saved-state version %u (expected %u)."), uHvSavedStatVersion,
452	GIM_HV_SAVED_STATE_VERSION);
453
454	/*
455	* Load per-VM MSRs.
456	*/
457	SSMR3GetU64(pSSM, &pHv->u64GuestOsIdMsr);
458	SSMR3GetU64(pSSM, &pHv->u64HypercallMsr);
459	SSMR3GetU64(pSSM, &pHv->u64TscPageMsr);
460
461	/*
462	* Load Hyper-V features / capabilities.
463	*/
464	SSMR3GetU32(pSSM, &pHv->uBaseFeat);
465	SSMR3GetU32(pSSM, &pHv->uPartFlags);
466	SSMR3GetU32(pSSM, &pHv->uPowMgmtFeat);
467	SSMR3GetU32(pSSM, &pHv->uMiscFeat);
468	SSMR3GetU32(pSSM, &pHv->uHyperHints);
469	SSMR3GetU32(pSSM, &pHv->uHyperCaps);
470
471	/*
472	* Load and enable the Hypercall region.
473	*/
474	PGIMMMIO2REGION pRegion = &pHv->aMmio2Regions[GIM_HV_HYPERCALL_PAGE_REGION_IDX];
475	SSMR3GetU8(pSSM, &pRegion->iRegion);
476	SSMR3GetBool(pSSM, &pRegion->fRCMapping);
477	SSMR3GetU32(pSSM, &pRegion->cbRegion);
478	SSMR3GetGCPhys(pSSM, &pRegion->GCPhysPage);
479	rc = SSMR3GetStrZ(pSSM, pRegion->szDescription, sizeof(pRegion->szDescription));
480	AssertRCReturn(rc, rc);
481	if (MSR_GIM_HV_HYPERCALL_IS_ENABLED(pHv->u64HypercallMsr))
482	{
483	Assert(pRegion->GCPhysPage != NIL_RTGCPHYS);
484	if (RT_LIKELY(pRegion->fRegistered))
485	{
486	rc = gimR3HvEnableHypercallPage(pVM, pRegion->GCPhysPage);
487	if (RT_FAILURE(rc))
488	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Failed to enable the hypercall page. GCPhys=%#RGp rc=%Rrc"),
489	pRegion->GCPhysPage, rc);
490	}
491	else
492	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Hypercall MMIO2 region not registered. Missing GIM device?!"));
493	}
494
495	/*
496	* Load and enable the reference TSC region.
497	*/
498	uint32_t uTscSequence;
499	pRegion = &pHv->aMmio2Regions[GIM_HV_REF_TSC_PAGE_REGION_IDX];
500	SSMR3GetU8(pSSM, &pRegion->iRegion);
501	SSMR3GetBool(pSSM, &pRegion->fRCMapping);
502	SSMR3GetU32(pSSM, &pRegion->cbRegion);
503	SSMR3GetGCPhys(pSSM, &pRegion->GCPhysPage);
504	SSMR3GetStrZ(pSSM, pRegion->szDescription, sizeof(pRegion->szDescription));
505	rc = SSMR3GetU32(pSSM, &uTscSequence);
506	AssertRCReturn(rc, rc);
507	if (MSR_GIM_HV_REF_TSC_IS_ENABLED(pHv->u64TscPageMsr))
508	{
509	Assert(pRegion->GCPhysPage != NIL_RTGCPHYS);
510	if (pRegion->fRegistered)
511	{
512	rc = gimR3HvEnableTscPage(pVM, pRegion->GCPhysPage, true /* fUseThisTscSeq */, uTscSequence);
513	if (RT_FAILURE(rc))
514	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Failed to enable the TSC page. GCPhys=%#RGp rc=%Rrc"),
515	pRegion->GCPhysPage, rc);
516	}
517	else
518	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("TSC-page MMIO2 region not registered. Missing GIM device?!"));
519	}
520
521	return rc;
522	}
523
524
525	/**
526	* Enables the Hyper-V TSC page.
527	*
528	* @returns VBox status code.
529	* @param pVM Pointer to the VM.
530	* @param GCPhysTscPage Where to map the TSC page.
531	* @param fUseThisTscSeq Whether to set the TSC sequence number to the one
532	* specified in @a uTscSeq.
533	* @param uTscSeq The TSC sequence value to use. Ignored if
534	* @a fUseThisTscSeq is false.
535	*/
536	VMMR3_INT_DECL(int) gimR3HvEnableTscPage(PVM pVM, RTGCPHYS GCPhysTscPage, bool fUseThisTscSeq, uint32_t uTscSeq)
537	{
538	PPDMDEVINSR3 pDevIns = pVM->gim.s.pDevInsR3;
539	PGIMMMIO2REGION pRegion = &pVM->gim.s.u.Hv.aMmio2Regions[GIM_HV_REF_TSC_PAGE_REGION_IDX];
540	AssertPtrReturn(pDevIns, VERR_GIM_DEVICE_NOT_REGISTERED);
541
542	int rc;
543	if (pRegion->fMapped)
544	{
545	/*
546	* Is it already enabled at the given guest-address?
547	*/
548	if (pRegion->GCPhysPage == GCPhysTscPage)
549	return VINF_SUCCESS;
550
551	/*
552	* If it's mapped at a different address, unmap the previous address.
553	*/
554	rc = gimR3HvDisableTscPage(pVM);
555	AssertRC(rc);
556	}
557
558	/*
559	* Map the TSC-page at the specified address.
560	*/
561	Assert(!pRegion->fMapped);
562	rc = GIMR3Mmio2Map(pVM, pRegion, GCPhysTscPage);
563	if (RT_SUCCESS(rc))
564	{
565	Assert(pRegion->GCPhysPage == GCPhysTscPage);
566
567	/*
568	* Update the TSC scale. Windows guests expect a non-zero TSC sequence, otherwise
569	* they fallback to using the reference count MSR which is not ideal in terms of VM-exits.
570	*
571	* Also, Hyper-V normalizes the time in 10 MHz, see:
572	* http://technet.microsoft.com/it-it/sysinternals/dn553408%28v=vs.110%29
573	*/
574	PGIMHVREFTSC pRefTsc = (PGIMHVREFTSC)pRegion->pvPageR3;
575	Assert(pRefTsc);
576
577	uint64_t const u64TscKHz = TMCpuTicksPerSecond(pVM) / UINT64_C(1000);
578	uint32_t u32TscSeq = 1;
579	if ( fUseThisTscSeq
580	&& uTscSeq < UINT32_C(0xfffffffe))
581	u32TscSeq = uTscSeq + 1;
582	pRefTsc->u32TscSequence = u32TscSeq;
583	pRefTsc->u64TscScale = ((INT64_C(10000) << 32) / u64TscKHz) << 32;
584	pRefTsc->i64TscOffset = 0;
585
586	LogRel(("GIM: HyperV: Enabled TSC page at %#RGp - u64TscScale=%#RX64 u64TscKHz=%#RX64 (%'RU64) Seq=%#RU32\n",
587	GCPhysTscPage, pRefTsc->u64TscScale, u64TscKHz, u64TscKHz, pRefTsc->u32TscSequence));
588
589	TMR3CpuTickParavirtEnable(pVM);
590	return VINF_SUCCESS;
591	}
592	else
593	LogRelFunc(("GIMR3Mmio2Map failed. rc=%Rrc\n", rc));
594
595	return VERR_GIM_OPERATION_FAILED;
596	}
597
598
599	/**
600	* Disables the Hyper-V TSC page.
601	*
602	* @returns VBox status code.
603	* @param pVM Pointer to the VM.
604	*/
605	VMMR3_INT_DECL(int) gimR3HvDisableTscPage(PVM pVM)
606	{
607	PGIMHV pHv = &pVM->gim.s.u.Hv;
608	PGIMMMIO2REGION pRegion = &pHv->aMmio2Regions[GIM_HV_REF_TSC_PAGE_REGION_IDX];
609	if (pRegion->fMapped)
610	{
611	GIMR3Mmio2Unmap(pVM, pRegion);
612	Assert(!pRegion->fMapped);
613	LogRel(("GIM: HyperV: Disabled TSC-page\n"));
614
615	TMR3CpuTickParavirtDisable(pVM);
616	return VINF_SUCCESS;
617	}
618	return VERR_GIM_PVTSC_NOT_ENABLED;
619	}
620
621
622	/**
623	* Disables the Hyper-V Hypercall page.
624	*
625	* @returns VBox status code.
626	*/
627	VMMR3_INT_DECL(int) gimR3HvDisableHypercallPage(PVM pVM)
628	{
629	PGIMHV pHv = &pVM->gim.s.u.Hv;
630	PGIMMMIO2REGION pRegion = &pHv->aMmio2Regions[GIM_HV_HYPERCALL_PAGE_REGION_IDX];
631	if (pRegion->fMapped)
632	{
633	GIMR3Mmio2Unmap(pVM, pRegion);
634	Assert(!pRegion->fMapped);
635	for (VMCPUID i = 0; i < pVM->cCpus; i++)
636	VMMHypercallsDisable(&pVM->aCpus[i]);
637	LogRel(("GIM: HyperV: Disabled Hypercall-page\n"));
638	return VINF_SUCCESS;
639	}
640	return VERR_GIM_HYPERCALLS_NOT_ENABLED;
641	}
642
643
644	/**
645	* Enables the Hyper-V Hypercall page.
646	*
647	* @returns VBox status code.
648	* @param pVM Pointer to the VM.
649	* @param GCPhysHypercallPage Where to map the hypercall page.
650	*/
651	VMMR3_INT_DECL(int) gimR3HvEnableHypercallPage(PVM pVM, RTGCPHYS GCPhysHypercallPage)
652	{
653	PPDMDEVINSR3 pDevIns = pVM->gim.s.pDevInsR3;
654	PGIMMMIO2REGION pRegion = &pVM->gim.s.u.Hv.aMmio2Regions[GIM_HV_HYPERCALL_PAGE_REGION_IDX];
655	AssertPtrReturn(pDevIns, VERR_GIM_DEVICE_NOT_REGISTERED);
656
657	if (pRegion->fMapped)
658	{
659	/*
660	* Is it already enabled at the given guest-address?
661	*/
662	if (pRegion->GCPhysPage == GCPhysHypercallPage)
663	return VINF_SUCCESS;
664
665	/*
666	* If it's mapped at a different address, unmap the previous address.
667	*/
668	int rc2 = gimR3HvDisableHypercallPage(pVM);
669	AssertRC(rc2);
670	}
671
672	/*
673	* Map the hypercall-page at the specified address.
674	*/
675	Assert(!pRegion->fMapped);
676	int rc = GIMR3Mmio2Map(pVM, pRegion, GCPhysHypercallPage);
677	if (RT_SUCCESS(rc))
678	{
679	Assert(pRegion->GCPhysPage == GCPhysHypercallPage);
680
681	/*
682	* Patch the hypercall-page.
683	*/
684	size_t cbWritten = 0;
685	rc = VMMPatchHypercall(pVM, pRegion->pvPageR3, PAGE_SIZE, &cbWritten);
686	if ( RT_SUCCESS(rc)
687	&& cbWritten < PAGE_SIZE)
688	{
689	uint8_t pbLast = (uint8_t )pRegion->pvPageR3 + cbWritten;
690	pbLast = 0xc3; / RET */
691
692	/*
693	* Notify VMM that hypercalls are now enabled for all VCPUs.
694	*/
695	for (VMCPUID i = 0; i < pVM->cCpus; i++)
696	VMMHypercallsEnable(&pVM->aCpus[i]);
697
698	LogRel(("GIM: HyperV: Enabled hypercalls at %#RGp\n", GCPhysHypercallPage));
699	return VINF_SUCCESS;
700	}
701	else
702	{
703	if (rc == VINF_SUCCESS)
704	rc = VERR_GIM_OPERATION_FAILED;
705	LogRel(("GIM: HyperV: VMMPatchHypercall failed. rc=%Rrc cbWritten=%u\n", rc, cbWritten));
706	}
707
708	GIMR3Mmio2Unmap(pVM, pRegion);
709	}
710
711	LogRel(("GIM: HyperV: GIMR3Mmio2Map failed. rc=%Rrc\n", rc));
712	return rc;
713	}
714

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source: vbox/trunk/src/VBox/VMM/VMMR3/GIMHv.cpp@ 55129

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