GIMHv.cpp@ 56694

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VMM/GIM: Cleanup.
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1	/* $Id: GIMHv.cpp 56694 2015-06-30 09:19:15Z 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.alldomusa.eu.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; /* Sanity checked in gimR3HvLoad(), gimR3HvEnableTscPage() & gimR3HvEnableHypercallPage() */
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; /* Sanity checked in gimR3HvLoad(), gimR3HvEnableTscPage() & gimR3HvEnableHypercallPage() */
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	pHv->cTscTicksPerSecond = TMCpuTicksPerSecond(pVM);
245
246	/*
247	* Determine interface capabilities based on the version.
248	*/
249	if (!pVM->gim.s.u32Version)
250	{
251	/* Hypervisor capabilities; features used by the hypervisor. */
252	pHv->uHyperCaps = HMIsNestedPagingActive(pVM) ? GIM_HV_HOST_FEAT_NESTED_PAGING : 0;
253	pHv->uHyperCaps \|= HMAreMsrBitmapsAvailable(pVM) ? GIM_HV_HOST_FEAT_MSR_BITMAP : 0;
254	}
255
256	CPUMCPUIDLEAF HyperLeaf;
257	RT_ZERO(HyperLeaf);
258	HyperLeaf.uLeaf = UINT32_C(0x40000006);
259	HyperLeaf.uEax = pHv->uHyperCaps;
260	HyperLeaf.uEbx = 0;
261	HyperLeaf.uEcx = 0;
262	HyperLeaf.uEdx = 0;
263	int rc = CPUMR3CpuIdInsert(pVM, &HyperLeaf);
264	AssertLogRelRCReturn(rc, rc);
265
266	return rc;
267	}
268
269
270	#if 0
271	VMMR3_INT_DECL(int) gimR3HvInitFinalize(PVM pVM)
272	{
273	pVM->gim.s.pfnHypercallR3 = &GIMHvHypercall;
274	if (!HMIsEnabled(pVM))
275	{
276	rc = PDMR3LdrGetSymbolRC(pVM, NULL /* pszModule */, GIMHV_HYPERCALL, &pVM->gim.s.pfnHypercallRC);
277	AssertRCReturn(rc, rc);
278	}
279	rc = PDMR3LdrGetSymbolR0(pVM, NULL /* pszModule */, GIMHV_HYPERCALL, &pVM->gim.s.pfnHypercallR0);
280	AssertRCReturn(rc, rc);
281	}
282	#endif
283
284
285	/**
286	* Terminates the Hyper-V GIM provider.
287	*
288	* @returns VBox status code.
289	* @param pVM Pointer to the VM.
290	*/
291	VMMR3_INT_DECL(int) gimR3HvTerm(PVM pVM)
292	{
293	gimR3HvReset(pVM);
294	return VINF_SUCCESS;
295	}
296
297
298	/**
299	* Applies relocations to data and code managed by this component.
300	*
301	* This function will be called at init and whenever the VMM need to relocate
302	* itself inside the GC.
303	*
304	* @param pVM Pointer to the VM.
305	* @param offDelta Relocation delta relative to old location.
306	*/
307	VMMR3_INT_DECL(void) gimR3HvRelocate(PVM pVM, RTGCINTPTR offDelta)
308	{
309	#if 0
310	int rc = PDMR3LdrGetSymbolRC(pVM, NULL /* pszModule */, GIMHV_HYPERCALL, &pVM->gim.s.pfnHypercallRC);
311	AssertFatalRC(rc);
312	#endif
313	}
314
315
316	/**
317	* This resets Hyper-V provider MSRs and unmaps whatever Hyper-V regions that
318	* the guest may have mapped.
319	*
320	* This is called when the VM is being reset.
321	*
322	* @param pVM Pointer to the VM.
323	* @thread EMT(0).
324	*/
325	VMMR3_INT_DECL(void) gimR3HvReset(PVM pVM)
326	{
327	VM_ASSERT_EMT0(pVM);
328
329	/*
330	* Unmap MMIO2 pages that the guest may have setup.
331	*/
332	LogRel(("GIM: HyperV: Resetting MMIO2 regions and MSRs\n"));
333	PGIMHV pHv = &pVM->gim.s.u.Hv;
334	for (unsigned i = 0; i < RT_ELEMENTS(pHv->aMmio2Regions); i++)
335	{
336	PGIMMMIO2REGION pRegion = &pHv->aMmio2Regions[i];
337	GIMR3Mmio2Unmap(pVM, pRegion);
338	}
339
340	/*
341	* Reset MSRs.
342	*/
343	pHv->u64GuestOsIdMsr = 0;
344	pHv->u64HypercallMsr = 0;
345	pHv->u64TscPageMsr = 0;
346	}
347
348
349	/**
350	* Returns a pointer to the MMIO2 regions supported by Hyper-V.
351	*
352	* @returns Pointer to an array of MMIO2 regions.
353	* @param pVM Pointer to the VM.
354	* @param pcRegions Where to store the number of regions in the array.
355	*/
356	VMMR3_INT_DECL(PGIMMMIO2REGION) gimR3HvGetMmio2Regions(PVM pVM, uint32_t *pcRegions)
357	{
358	Assert(GIMIsEnabled(pVM));
359	PGIMHV pHv = &pVM->gim.s.u.Hv;
360
361	*pcRegions = RT_ELEMENTS(pHv->aMmio2Regions);
362	Assert(pcRegions <= UINT8_MAX); / See PGMR3PhysMMIO2Register(). */
363	return pHv->aMmio2Regions;
364	}
365
366
367	/**
368	* Hyper-V state-save operation.
369	*
370	* @returns VBox status code.
371	* @param pVM Pointer to the VM.
372	* @param pSSM Pointer to the SSM handle.
373	*/
374	VMMR3_INT_DECL(int) gimR3HvSave(PVM pVM, PSSMHANDLE pSSM)
375	{
376	PCGIMHV pcHv = &pVM->gim.s.u.Hv;
377
378	/*
379	* Save the Hyper-V SSM version.
380	*/
381	SSMR3PutU32(pSSM, GIM_HV_SAVED_STATE_VERSION);
382
383	/*
384	* Save per-VM MSRs.
385	*/
386	SSMR3PutU64(pSSM, pcHv->u64GuestOsIdMsr);
387	SSMR3PutU64(pSSM, pcHv->u64HypercallMsr);
388	SSMR3PutU64(pSSM, pcHv->u64TscPageMsr);
389
390	/*
391	* Save Hyper-V features / capabilities.
392	*/
393	SSMR3PutU32(pSSM, pcHv->uBaseFeat);
394	SSMR3PutU32(pSSM, pcHv->uPartFlags);
395	SSMR3PutU32(pSSM, pcHv->uPowMgmtFeat);
396	SSMR3PutU32(pSSM, pcHv->uMiscFeat);
397	SSMR3PutU32(pSSM, pcHv->uHyperHints);
398	SSMR3PutU32(pSSM, pcHv->uHyperCaps);
399
400	/*
401	* Save the Hypercall region.
402	*/
403	PCGIMMMIO2REGION pcRegion = &pcHv->aMmio2Regions[GIM_HV_HYPERCALL_PAGE_REGION_IDX];
404	SSMR3PutU8(pSSM, pcRegion->iRegion);
405	SSMR3PutBool(pSSM, pcRegion->fRCMapping);
406	SSMR3PutU32(pSSM, pcRegion->cbRegion);
407	SSMR3PutGCPhys(pSSM, pcRegion->GCPhysPage);
408	SSMR3PutStrZ(pSSM, pcRegion->szDescription);
409
410	/*
411	* Save the reference TSC region.
412	*/
413	pcRegion = &pcHv->aMmio2Regions[GIM_HV_REF_TSC_PAGE_REGION_IDX];
414	SSMR3PutU8(pSSM, pcRegion->iRegion);
415	SSMR3PutBool(pSSM, pcRegion->fRCMapping);
416	SSMR3PutU32(pSSM, pcRegion->cbRegion);
417	SSMR3PutGCPhys(pSSM, pcRegion->GCPhysPage);
418	SSMR3PutStrZ(pSSM, pcRegion->szDescription);
419	/* Save the TSC sequence so we can bump it on restore (as the CPU frequency/offset may change). */
420	uint32_t uTscSequence = 0;
421	if ( pcRegion->fMapped
422	&& MSR_GIM_HV_REF_TSC_IS_ENABLED(pcHv->u64TscPageMsr))
423	{
424	PCGIMHVREFTSC pcRefTsc = (PCGIMHVREFTSC)pcRegion->pvPageR3;
425	uTscSequence = pcRefTsc->u32TscSequence;
426	}
427
428	return SSMR3PutU32(pSSM, uTscSequence);
429	}
430
431
432	/**
433	* Hyper-V state-load operation, final pass.
434	*
435	* @returns VBox status code.
436	* @param pVM Pointer to the VM.
437	* @param pSSM Pointer to the SSM handle.
438	* @param uSSMVersion The GIM saved-state version.
439	*/
440	VMMR3_INT_DECL(int) gimR3HvLoad(PVM pVM, PSSMHANDLE pSSM, uint32_t uSSMVersion)
441	{
442	/*
443	* Load the Hyper-V SSM version first.
444	*/
445	uint32_t uHvSavedStatVersion;
446	int rc = SSMR3GetU32(pSSM, &uHvSavedStatVersion);
447	AssertRCReturn(rc, rc);
448	if (uHvSavedStatVersion != GIM_HV_SAVED_STATE_VERSION)
449	return SSMR3SetLoadError(pSSM, VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION, RT_SRC_POS,
450	N_("Unsupported Hyper-V saved-state version %u (expected %u)."), uHvSavedStatVersion,
451	GIM_HV_SAVED_STATE_VERSION);
452
453	/*
454	* Update the TSC frequency from TM.
455	*/
456	PGIMHV pHv = &pVM->gim.s.u.Hv;
457	pHv->cTscTicksPerSecond = TMCpuTicksPerSecond(pVM);
458
459	/*
460	* Load per-VM MSRs.
461	*/
462	SSMR3GetU64(pSSM, &pHv->u64GuestOsIdMsr);
463	SSMR3GetU64(pSSM, &pHv->u64HypercallMsr);
464	SSMR3GetU64(pSSM, &pHv->u64TscPageMsr);
465
466	/*
467	* Load Hyper-V features / capabilities.
468	*/
469	SSMR3GetU32(pSSM, &pHv->uBaseFeat);
470	SSMR3GetU32(pSSM, &pHv->uPartFlags);
471	SSMR3GetU32(pSSM, &pHv->uPowMgmtFeat);
472	SSMR3GetU32(pSSM, &pHv->uMiscFeat);
473	SSMR3GetU32(pSSM, &pHv->uHyperHints);
474	SSMR3GetU32(pSSM, &pHv->uHyperCaps);
475
476	/*
477	* Load and enable the Hypercall region.
478	*/
479	PGIMMMIO2REGION pRegion = &pHv->aMmio2Regions[GIM_HV_HYPERCALL_PAGE_REGION_IDX];
480	SSMR3GetU8(pSSM, &pRegion->iRegion);
481	SSMR3GetBool(pSSM, &pRegion->fRCMapping);
482	SSMR3GetU32(pSSM, &pRegion->cbRegion);
483	SSMR3GetGCPhys(pSSM, &pRegion->GCPhysPage);
484	rc = SSMR3GetStrZ(pSSM, pRegion->szDescription, sizeof(pRegion->szDescription));
485	AssertRCReturn(rc, rc);
486
487	if (pRegion->cbRegion != PAGE_SIZE)
488	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Hypercall page region size %u invalid, expected %u"),
489	pRegion->cbRegion, PAGE_SIZE);
490
491	if (MSR_GIM_HV_HYPERCALL_IS_ENABLED(pHv->u64HypercallMsr))
492	{
493	Assert(pRegion->GCPhysPage != NIL_RTGCPHYS);
494	if (RT_LIKELY(pRegion->fRegistered))
495	{
496	rc = gimR3HvEnableHypercallPage(pVM, pRegion->GCPhysPage);
497	if (RT_FAILURE(rc))
498	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Failed to enable the hypercall page. GCPhys=%#RGp rc=%Rrc"),
499	pRegion->GCPhysPage, rc);
500	}
501	else
502	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Hypercall MMIO2 region not registered. Missing GIM device?!"));
503	}
504
505	/*
506	* Load and enable the reference TSC region.
507	*/
508	uint32_t uTscSequence;
509	pRegion = &pHv->aMmio2Regions[GIM_HV_REF_TSC_PAGE_REGION_IDX];
510	SSMR3GetU8(pSSM, &pRegion->iRegion);
511	SSMR3GetBool(pSSM, &pRegion->fRCMapping);
512	SSMR3GetU32(pSSM, &pRegion->cbRegion);
513	SSMR3GetGCPhys(pSSM, &pRegion->GCPhysPage);
514	SSMR3GetStrZ(pSSM, pRegion->szDescription, sizeof(pRegion->szDescription));
515	rc = SSMR3GetU32(pSSM, &uTscSequence);
516	AssertRCReturn(rc, rc);
517
518	if (pRegion->cbRegion != PAGE_SIZE)
519	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("TSC page region size %u invalid, expected %u"),
520	pRegion->cbRegion, PAGE_SIZE);
521
522	if (MSR_GIM_HV_REF_TSC_IS_ENABLED(pHv->u64TscPageMsr))
523	{
524	Assert(pRegion->GCPhysPage != NIL_RTGCPHYS);
525	if (pRegion->fRegistered)
526	{
527	rc = gimR3HvEnableTscPage(pVM, pRegion->GCPhysPage, true /* fUseThisTscSeq */, uTscSequence);
528	if (RT_FAILURE(rc))
529	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("Failed to enable the TSC page. GCPhys=%#RGp rc=%Rrc"),
530	pRegion->GCPhysPage, rc);
531	}
532	else
533	return SSMR3SetCfgError(pSSM, RT_SRC_POS, N_("TSC-page MMIO2 region not registered. Missing GIM device?!"));
534	}
535
536	return rc;
537	}
538
539
540	/**
541	* Enables the Hyper-V TSC page.
542	*
543	* @returns VBox status code.
544	* @param pVM Pointer to the VM.
545	* @param GCPhysTscPage Where to map the TSC page.
546	* @param fUseThisTscSeq Whether to set the TSC sequence number to the one
547	* specified in @a uTscSeq.
548	* @param uTscSeq The TSC sequence value to use. Ignored if
549	* @a fUseThisTscSeq is false.
550	*/
551	VMMR3_INT_DECL(int) gimR3HvEnableTscPage(PVM pVM, RTGCPHYS GCPhysTscPage, bool fUseThisTscSeq, uint32_t uTscSeq)
552	{
553	PPDMDEVINSR3 pDevIns = pVM->gim.s.pDevInsR3;
554	PGIMMMIO2REGION pRegion = &pVM->gim.s.u.Hv.aMmio2Regions[GIM_HV_REF_TSC_PAGE_REGION_IDX];
555	AssertPtrReturn(pDevIns, VERR_GIM_DEVICE_NOT_REGISTERED);
556
557	int rc;
558	if (pRegion->fMapped)
559	{
560	/*
561	* Is it already enabled at the given guest-address?
562	*/
563	if (pRegion->GCPhysPage == GCPhysTscPage)
564	return VINF_SUCCESS;
565
566	/*
567	* If it's mapped at a different address, unmap the previous address.
568	*/
569	rc = gimR3HvDisableTscPage(pVM);
570	AssertRC(rc);
571	}
572
573	/*
574	* Map the TSC-page at the specified address.
575	*/
576	Assert(!pRegion->fMapped);
577
578	/** @todo this is buggy when large pages are used due to a PGM limitation, see
579	* @bugref{7532}. Instead of the overlay style mapping, we just
580	* rewrite guest memory directly. */
581	#if 0
582	rc = GIMR3Mmio2Map(pVM, pRegion, GCPhysTscPage);
583	if (RT_SUCCESS(rc))
584	{
585	Assert(pRegion->GCPhysPage == GCPhysTscPage);
586
587	/*
588	* Update the TSC scale. Windows guests expect a non-zero TSC sequence, otherwise
589	* they fallback to using the reference count MSR which is not ideal in terms of VM-exits.
590	*
591	* Also, Hyper-V normalizes the time in 10 MHz, see:
592	* http://technet.microsoft.com/it-it/sysinternals/dn553408%28v=vs.110%29
593	*/
594	PGIMHVREFTSC pRefTsc = (PGIMHVREFTSC)pRegion->pvPageR3;
595	Assert(pRefTsc);
596
597	PGIMHV pHv = &pVM->gim.s.u.Hv;
598	uint64_t const u64TscKHz = pHv->cTscTicksPerSecond / UINT64_C(1000);
599	uint32_t u32TscSeq = 1;
600	if ( fUseThisTscSeq
601	&& uTscSeq < UINT32_C(0xfffffffe))
602	u32TscSeq = uTscSeq + 1;
603	pRefTsc->u32TscSequence = u32TscSeq;
604	pRefTsc->u64TscScale = ((INT64_C(10000) << 32) / u64TscKHz) << 32;
605	pRefTsc->i64TscOffset = 0;
606
607	LogRel(("GIM: HyperV: Enabled TSC page at %#RGp - u64TscScale=%#RX64 u64TscKHz=%#RX64 (%'RU64) Seq=%#RU32\n",
608	GCPhysTscPage, pRefTsc->u64TscScale, u64TscKHz, u64TscKHz, pRefTsc->u32TscSequence));
609
610	TMR3CpuTickParavirtEnable(pVM);
611	return VINF_SUCCESS;
612	}
613	else
614	LogRelFunc(("GIMR3Mmio2Map failed. rc=%Rrc\n", rc));
615	return VERR_GIM_OPERATION_FAILED;
616	#else
617	AssertReturn(pRegion->cbRegion == PAGE_SIZE, VERR_GIM_IPE_2);
618	PGIMHVREFTSC pRefTsc = (PGIMHVREFTSC)RTMemAllocZ(PAGE_SIZE);
619	if (RT_UNLIKELY(!pRefTsc))
620	{
621	LogRelFunc(("Failed to alloc %u bytes\n", PAGE_SIZE));
622	return VERR_NO_MEMORY;
623	}
624
625	PGIMHV pHv = &pVM->gim.s.u.Hv;
626	uint64_t const u64TscKHz = pHv->cTscTicksPerSecond / UINT64_C(1000);
627	uint32_t u32TscSeq = 1;
628	if ( fUseThisTscSeq
629	&& uTscSeq < UINT32_C(0xfffffffe))
630	u32TscSeq = uTscSeq + 1;
631	pRefTsc->u32TscSequence = u32TscSeq;
632	pRefTsc->u64TscScale = ((INT64_C(10000) << 32) / u64TscKHz) << 32;
633	pRefTsc->i64TscOffset = 0;
634
635	rc = PGMPhysSimpleWriteGCPhys(pVM, GCPhysTscPage, pRefTsc, sizeof(*pRefTsc));
636	if (RT_SUCCESS(rc))
637	{
638	LogRel(("GIM: HyperV: Enabled TSC page at %#RGp - u64TscScale=%#RX64 u64TscKHz=%#RX64 (%'RU64) Seq=%#RU32\n",
639	GCPhysTscPage, pRefTsc->u64TscScale, u64TscKHz, u64TscKHz, pRefTsc->u32TscSequence));
640
641	pRegion->GCPhysPage = GCPhysTscPage;
642	pRegion->fMapped = true;
643	TMR3CpuTickParavirtEnable(pVM);
644	}
645	else
646	{
647	LogRelFunc(("GIM: HyperV: PGMPhysSimpleWriteGCPhys failed. rc=%Rrc\n", rc));
648	rc = VERR_GIM_OPERATION_FAILED;
649	}
650	RTMemFree(pRefTsc);
651	return rc;
652	#endif
653	}
654
655
656	/**
657	* Disables the Hyper-V TSC page.
658	*
659	* @returns VBox status code.
660	* @param pVM Pointer to the VM.
661	*/
662	VMMR3_INT_DECL(int) gimR3HvDisableTscPage(PVM pVM)
663	{
664	PGIMHV pHv = &pVM->gim.s.u.Hv;
665	PGIMMMIO2REGION pRegion = &pHv->aMmio2Regions[GIM_HV_REF_TSC_PAGE_REGION_IDX];
666	if (pRegion->fMapped)
667	{
668	#if 0
669	GIMR3Mmio2Unmap(pVM, pRegion);
670	Assert(!pRegion->fMapped);
671	#else
672	pRegion->fMapped = false;
673	#endif
674	LogRel(("GIM: HyperV: Disabled TSC-page\n"));
675
676	TMR3CpuTickParavirtDisable(pVM);
677	return VINF_SUCCESS;
678	}
679	return VERR_GIM_PVTSC_NOT_ENABLED;
680	}
681
682
683	/**
684	* Disables the Hyper-V Hypercall page.
685	*
686	* @returns VBox status code.
687	*/
688	VMMR3_INT_DECL(int) gimR3HvDisableHypercallPage(PVM pVM)
689	{
690	PGIMHV pHv = &pVM->gim.s.u.Hv;
691	PGIMMMIO2REGION pRegion = &pHv->aMmio2Regions[GIM_HV_HYPERCALL_PAGE_REGION_IDX];
692	if (pRegion->fMapped)
693	{
694	#if 0
695	GIMR3Mmio2Unmap(pVM, pRegion);
696	Assert(!pRegion->fMapped);
697	#else
698	pRegion->fMapped = false;
699	#endif
700	for (VMCPUID i = 0; i < pVM->cCpus; i++)
701	VMMHypercallsDisable(&pVM->aCpus[i]);
702	LogRel(("GIM: HyperV: Disabled Hypercall-page\n"));
703	return VINF_SUCCESS;
704	}
705	return VERR_GIM_HYPERCALLS_NOT_ENABLED;
706	}
707
708
709	/**
710	* Enables the Hyper-V Hypercall page.
711	*
712	* @returns VBox status code.
713	* @param pVM Pointer to the VM.
714	* @param GCPhysHypercallPage Where to map the hypercall page.
715	*/
716	VMMR3_INT_DECL(int) gimR3HvEnableHypercallPage(PVM pVM, RTGCPHYS GCPhysHypercallPage)
717	{
718	PPDMDEVINSR3 pDevIns = pVM->gim.s.pDevInsR3;
719	PGIMMMIO2REGION pRegion = &pVM->gim.s.u.Hv.aMmio2Regions[GIM_HV_HYPERCALL_PAGE_REGION_IDX];
720	AssertPtrReturn(pDevIns, VERR_GIM_DEVICE_NOT_REGISTERED);
721
722	if (pRegion->fMapped)
723	{
724	/*
725	* Is it already enabled at the given guest-address?
726	*/
727	if (pRegion->GCPhysPage == GCPhysHypercallPage)
728	return VINF_SUCCESS;
729
730	/*
731	* If it's mapped at a different address, unmap the previous address.
732	*/
733	int rc2 = gimR3HvDisableHypercallPage(pVM);
734	AssertRC(rc2);
735	}
736
737	/*
738	* Map the hypercall-page at the specified address.
739	*/
740	Assert(!pRegion->fMapped);
741
742	/** @todo this is buggy when large pages are used due to a PGM limitation, see
743	* @bugref{7532}. Instead of the overlay style mapping, we just
744	* rewrite guest memory directly. */
745	#if 0
746	int rc = GIMR3Mmio2Map(pVM, pRegion, GCPhysHypercallPage);
747	if (RT_SUCCESS(rc))
748	{
749	Assert(pRegion->GCPhysPage == GCPhysHypercallPage);
750
751	/*
752	* Patch the hypercall-page.
753	*/
754	size_t cbWritten = 0;
755	rc = VMMPatchHypercall(pVM, pRegion->pvPageR3, PAGE_SIZE, &cbWritten);
756	if ( RT_SUCCESS(rc)
757	&& cbWritten < PAGE_SIZE)
758	{
759	uint8_t pbLast = (uint8_t )pRegion->pvPageR3 + cbWritten;
760	pbLast = 0xc3; / RET */
761
762	/*
763	* Notify VMM that hypercalls are now enabled for all VCPUs.
764	*/
765	for (VMCPUID i = 0; i < pVM->cCpus; i++)
766	VMMHypercallsEnable(&pVM->aCpus[i]);
767
768	LogRel(("GIM: HyperV: Enabled hypercalls at %#RGp\n", GCPhysHypercallPage));
769	return VINF_SUCCESS;
770	}
771	else
772	{
773	if (rc == VINF_SUCCESS)
774	rc = VERR_GIM_OPERATION_FAILED;
775	LogRel(("GIM: HyperV: VMMPatchHypercall failed. rc=%Rrc cbWritten=%u\n", rc, cbWritten));
776	}
777
778	GIMR3Mmio2Unmap(pVM, pRegion);
779	}
780
781	LogRel(("GIM: HyperV: GIMR3Mmio2Map failed. rc=%Rrc\n", rc));
782	return rc;
783	#else
784	AssertReturn(pRegion->cbRegion == PAGE_SIZE, VERR_GIM_IPE_3);
785	void *pvHypercallPage = RTMemAllocZ(PAGE_SIZE);
786	if (RT_UNLIKELY(!pvHypercallPage))
787	{
788	LogRelFunc(("Failed to alloc %u bytes\n", PAGE_SIZE));
789	return VERR_NO_MEMORY;
790	}
791
792	/*
793	* Patch the hypercall-page.
794	*/
795	size_t cbWritten = 0;
796	int rc = VMMPatchHypercall(pVM, pvHypercallPage, PAGE_SIZE, &cbWritten);
797	if ( RT_SUCCESS(rc)
798	&& cbWritten < PAGE_SIZE)
799	{
800	uint8_t pbLast = (uint8_t )pvHypercallPage + cbWritten;
801	pbLast = 0xc3; / RET */
802
803	rc = PGMPhysSimpleWriteGCPhys(pVM, GCPhysHypercallPage, pvHypercallPage, PAGE_SIZE);
804	if (RT_SUCCESS(rc))
805	{
806	/*
807	* Notify VMM that hypercalls are now enabled for all VCPUs.
808	*/
809	for (VMCPUID i = 0; i < pVM->cCpus; i++)
810	VMMHypercallsEnable(&pVM->aCpus[i]);
811
812	pRegion->GCPhysPage = GCPhysHypercallPage;
813	pRegion->fMapped = true;
814	LogRel(("GIM: HyperV: Enabled hypercalls at %#RGp\n", GCPhysHypercallPage));
815	}
816	else
817	LogRel(("GIM: HyperV: PGMPhysSimpleWriteGCPhys failed during hypercall page setup. rc=%Rrc\n", rc));
818	}
819	else
820	{
821	if (rc == VINF_SUCCESS)
822	rc = VERR_GIM_OPERATION_FAILED;
823	LogRel(("GIM: HyperV: VMMPatchHypercall failed. rc=%Rrc cbWritten=%u\n", rc, cbWritten));
824	}
825
826	RTMemFree(pvHypercallPage);
827	return rc;
828	#endif
829	}
830

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source: vbox/trunk/src/VBox/VMM/VMMR3/GIMHv.cpp@ 56694

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