CPUMR3Db.cpp@ 91266

Last change on this file since 91266 was 91266, checked in by vboxsync, 3 years ago
VMM/CPUM: Moved CPUIDs and MSRs from the hyper heap and into the VM structure (might not be such a great idea for MSRs actually). bugref:10093
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1	/* $Id: CPUMR3Db.cpp 91266 2021-09-15 22:26:50Z vboxsync $ */
2	/** @file
3	* CPUM - CPU database part.
4	*/
5
6	/*
7	* Copyright (C) 2013-2020 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	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_CPUM
23	#include <VBox/vmm/cpum.h>
24	#include "CPUMInternal.h"
25	#include <VBox/vmm/vm.h>
26	#include <VBox/vmm/mm.h>
27
28	#include <VBox/err.h>
29	#if !defined(RT_ARCH_ARM64)
30	# include <iprt/asm-amd64-x86.h>
31	#endif
32	#include <iprt/mem.h>
33	#include <iprt/string.h>
34
35
36	/*********************************************************************************************************************************
37	* Defined Constants And Macros *
38	*********************************************************************************************************************************/
39	/** @def NULL_ALONE
40	* For eliminating an unnecessary data dependency in standalone builds (for
41	* VBoxSVC). */
42	/** @def ZERO_ALONE
43	* For eliminating an unnecessary data size dependency in standalone builds (for
44	* VBoxSVC). */
45	#ifndef CPUM_DB_STANDALONE
46	# define NULL_ALONE(a_aTable) a_aTable
47	# define ZERO_ALONE(a_cTable) a_cTable
48	#else
49	# define NULL_ALONE(a_aTable) NULL
50	# define ZERO_ALONE(a_cTable) 0
51	#endif
52
53
54	/** @name Short macros for the MSR range entries.
55	*
56	* These are rather cryptic, but this is to reduce the attack on the right
57	* margin.
58	*
59	* @{ */
60	/** Alias one MSR onto another (a_uTarget). */
61	#define MAL(a_uMsr, a_szName, a_uTarget) \
62	RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_MsrAlias, kCpumMsrWrFn_MsrAlias, 0, a_uTarget, 0, 0, a_szName)
63	/** Functions handles everything. */
64	#define MFN(a_uMsr, a_szName, a_enmRdFnSuff, a_enmWrFnSuff) \
65	RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, 0, 0, 0, 0, a_szName)
66	/** Functions handles everything, with GP mask. */
67	#define MFG(a_uMsr, a_szName, a_enmRdFnSuff, a_enmWrFnSuff, a_fWrGpMask) \
68	RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, 0, 0, 0, a_fWrGpMask, a_szName)
69	/** Function handlers, read-only. */
70	#define MFO(a_uMsr, a_szName, a_enmRdFnSuff) \
71	RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_ReadOnly, 0, 0, 0, UINT64_MAX, a_szName)
72	/** Function handlers, ignore all writes. */
73	#define MFI(a_uMsr, a_szName, a_enmRdFnSuff) \
74	RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_IgnoreWrite, 0, 0, UINT64_MAX, 0, a_szName)
75	/** Function handlers, with value. */
76	#define MFV(a_uMsr, a_szName, a_enmRdFnSuff, a_enmWrFnSuff, a_uValue) \
77	RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, 0, a_uValue, 0, 0, a_szName)
78	/** Function handlers, with write ignore mask. */
79	#define MFW(a_uMsr, a_szName, a_enmRdFnSuff, a_enmWrFnSuff, a_fWrIgnMask) \
80	RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, 0, 0, a_fWrIgnMask, 0, a_szName)
81	/** Function handlers, extended version. */
82	#define MFX(a_uMsr, a_szName, a_enmRdFnSuff, a_enmWrFnSuff, a_uValue, a_fWrIgnMask, a_fWrGpMask) \
83	RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, 0, a_uValue, a_fWrIgnMask, a_fWrGpMask, a_szName)
84	/** Function handlers, with CPUMCPU storage variable. */
85	#define MFS(a_uMsr, a_szName, a_enmRdFnSuff, a_enmWrFnSuff, a_CpumCpuMember) \
86	RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, \
87	RT_OFFSETOF(CPUMCPU, a_CpumCpuMember), 0, 0, 0, a_szName)
88	/** Function handlers, with CPUMCPU storage variable, ignore mask and GP mask. */
89	#define MFZ(a_uMsr, a_szName, a_enmRdFnSuff, a_enmWrFnSuff, a_CpumCpuMember, a_fWrIgnMask, a_fWrGpMask) \
90	RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, \
91	RT_OFFSETOF(CPUMCPU, a_CpumCpuMember), 0, a_fWrIgnMask, a_fWrGpMask, a_szName)
92	/** Read-only fixed value. */
93	#define MVO(a_uMsr, a_szName, a_uValue) \
94	RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_FixedValue, kCpumMsrWrFn_ReadOnly, 0, a_uValue, 0, UINT64_MAX, a_szName)
95	/** Read-only fixed value, ignores all writes. */
96	#define MVI(a_uMsr, a_szName, a_uValue) \
97	RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_FixedValue, kCpumMsrWrFn_IgnoreWrite, 0, a_uValue, UINT64_MAX, 0, a_szName)
98	/** Read fixed value, ignore writes outside GP mask. */
99	#define MVG(a_uMsr, a_szName, a_uValue, a_fWrGpMask) \
100	RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_FixedValue, kCpumMsrWrFn_IgnoreWrite, 0, a_uValue, 0, a_fWrGpMask, a_szName)
101	/** Read fixed value, extended version with both GP and ignore masks. */
102	#define MVX(a_uMsr, a_szName, a_uValue, a_fWrIgnMask, a_fWrGpMask) \
103	RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_FixedValue, kCpumMsrWrFn_IgnoreWrite, 0, a_uValue, a_fWrIgnMask, a_fWrGpMask, a_szName)
104	/** The short form, no CPUM backing. */
105	#define MSN(a_uMsr, a_szName, a_enmRdFnSuff, a_enmWrFnSuff, a_uInitOrReadValue, a_fWrIgnMask, a_fWrGpMask) \
106	RINT(a_uMsr, a_uMsr, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, 0, \
107	a_uInitOrReadValue, a_fWrIgnMask, a_fWrGpMask, a_szName)
108
109	/** Range: Functions handles everything. */
110	#define RFN(a_uFirst, a_uLast, a_szName, a_enmRdFnSuff, a_enmWrFnSuff) \
111	RINT(a_uFirst, a_uLast, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, 0, 0, 0, 0, a_szName)
112	/** Range: Read fixed value, read-only. */
113	#define RVO(a_uFirst, a_uLast, a_szName, a_uValue) \
114	RINT(a_uFirst, a_uLast, kCpumMsrRdFn_FixedValue, kCpumMsrWrFn_ReadOnly, 0, a_uValue, 0, UINT64_MAX, a_szName)
115	/** Range: Read fixed value, ignore writes. */
116	#define RVI(a_uFirst, a_uLast, a_szName, a_uValue) \
117	RINT(a_uFirst, a_uLast, kCpumMsrRdFn_FixedValue, kCpumMsrWrFn_IgnoreWrite, 0, a_uValue, UINT64_MAX, 0, a_szName)
118	/** Range: The short form, no CPUM backing. */
119	#define RSN(a_uFirst, a_uLast, a_szName, a_enmRdFnSuff, a_enmWrFnSuff, a_uInitOrReadValue, a_fWrIgnMask, a_fWrGpMask) \
120	RINT(a_uFirst, a_uLast, kCpumMsrRdFn_##a_enmRdFnSuff, kCpumMsrWrFn_##a_enmWrFnSuff, 0, \
121	a_uInitOrReadValue, a_fWrIgnMask, a_fWrGpMask, a_szName)
122
123	/** Internal form used by the macros. */
124	#ifdef VBOX_WITH_STATISTICS
125	# define RINT(a_uFirst, a_uLast, a_enmRdFn, a_enmWrFn, a_offCpumCpu, a_uInitOrReadValue, a_fWrIgnMask, a_fWrGpMask, a_szName) \
126	{ a_uFirst, a_uLast, a_enmRdFn, a_enmWrFn, a_offCpumCpu, 0, a_uInitOrReadValue, a_fWrIgnMask, a_fWrGpMask, a_szName, \
127	{ 0 }, { 0 }, { 0 }, { 0 } }
128	#else
129	# define RINT(a_uFirst, a_uLast, a_enmRdFn, a_enmWrFn, a_offCpumCpu, a_uInitOrReadValue, a_fWrIgnMask, a_fWrGpMask, a_szName) \
130	{ a_uFirst, a_uLast, a_enmRdFn, a_enmWrFn, a_offCpumCpu, 0, a_uInitOrReadValue, a_fWrIgnMask, a_fWrGpMask, a_szName }
131	#endif
132	/** @} */
133
134	#ifndef CPUM_DB_STANDALONE
135
136	#include "cpus/Intel_Core_i7_6700K.h"
137	#include "cpus/Intel_Core_i7_5600U.h"
138	#include "cpus/Intel_Core_i7_3960X.h"
139	#include "cpus/Intel_Core_i5_3570.h"
140	#include "cpus/Intel_Core_i7_2635QM.h"
141	#include "cpus/Intel_Xeon_X5482_3_20GHz.h"
142	#include "cpus/Intel_Core2_X6800_2_93GHz.h"
143	#include "cpus/Intel_Core2_T7600_2_33GHz.h"
144	#include "cpus/Intel_Core_Duo_T2600_2_16GHz.h"
145	#include "cpus/Intel_Pentium_M_processor_2_00GHz.h"
146	#include "cpus/Intel_Pentium_4_3_00GHz.h"
147	#include "cpus/Intel_Pentium_N3530_2_16GHz.h"
148	#include "cpus/Intel_Atom_330_1_60GHz.h"
149	#include "cpus/Intel_80486.h"
150	#include "cpus/Intel_80386.h"
151	#include "cpus/Intel_80286.h"
152	#include "cpus/Intel_80186.h"
153	#include "cpus/Intel_8086.h"
154
155	#include "cpus/AMD_Ryzen_7_1800X_Eight_Core.h"
156	#include "cpus/AMD_FX_8150_Eight_Core.h"
157	#include "cpus/AMD_Phenom_II_X6_1100T.h"
158	#include "cpus/Quad_Core_AMD_Opteron_2384.h"
159	#include "cpus/AMD_Athlon_64_X2_Dual_Core_4200.h"
160	#include "cpus/AMD_Athlon_64_3200.h"
161
162	#include "cpus/VIA_QuadCore_L4700_1_2_GHz.h"
163
164	#include "cpus/ZHAOXIN_KaiXian_KX_U5581_1_8GHz.h"
165
166	#include "cpus/Hygon_C86_7185_32_core.h"
167
168
169	/**
170	* The database entries.
171	*
172	* 1. The first entry is special. It is the fallback for unknown
173	* processors. Thus, it better be pretty representative.
174	*
175	* 2. The first entry for a CPU vendor is likewise important as it is
176	* the default entry for that vendor.
177	*
178	* Generally we put the most recent CPUs first, since these tend to have the
179	* most complicated and backwards compatible list of MSRs.
180	*/
181	static CPUMDBENTRY const * const g_apCpumDbEntries[] =
182	{
183	#ifdef VBOX_CPUDB_Intel_Core_i7_6700K_h
184	&g_Entry_Intel_Core_i7_6700K,
185	#endif
186	#ifdef VBOX_CPUDB_Intel_Core_i7_5600U_h
187	&g_Entry_Intel_Core_i7_5600U,
188	#endif
189	#ifdef VBOX_CPUDB_Intel_Core_i5_3570_h
190	&g_Entry_Intel_Core_i5_3570,
191	#endif
192	#ifdef VBOX_CPUDB_Intel_Core_i7_3960X_h
193	&g_Entry_Intel_Core_i7_3960X,
194	#endif
195	#ifdef VBOX_CPUDB_Intel_Core_i7_2635QM_h
196	&g_Entry_Intel_Core_i7_2635QM,
197	#endif
198	#ifdef VBOX_CPUDB_Intel_Pentium_N3530_2_16GHz_h
199	&g_Entry_Intel_Pentium_N3530_2_16GHz,
200	#endif
201	#ifdef VBOX_CPUDB_Intel_Atom_330_1_60GHz_h
202	&g_Entry_Intel_Atom_330_1_60GHz,
203	#endif
204	#ifdef VBOX_CPUDB_Intel_Pentium_M_processor_2_00GHz_h
205	&g_Entry_Intel_Pentium_M_processor_2_00GHz,
206	#endif
207	#ifdef VBOX_CPUDB_Intel_Xeon_X5482_3_20GHz_h
208	&g_Entry_Intel_Xeon_X5482_3_20GHz,
209	#endif
210	#ifdef VBOX_CPUDB_Intel_Core2_X6800_2_93GHz_h
211	&g_Entry_Intel_Core2_X6800_2_93GHz,
212	#endif
213	#ifdef VBOX_CPUDB_Intel_Core2_T7600_2_33GHz_h
214	&g_Entry_Intel_Core2_T7600_2_33GHz,
215	#endif
216	#ifdef VBOX_CPUDB_Intel_Core_Duo_T2600_2_16GHz_h
217	&g_Entry_Intel_Core_Duo_T2600_2_16GHz,
218	#endif
219	#ifdef VBOX_CPUDB_Intel_Pentium_4_3_00GHz_h
220	&g_Entry_Intel_Pentium_4_3_00GHz,
221	#endif
222	#ifdef VBOX_CPUDB_Intel_Pentium_4_3_00GHz_h
223	&g_Entry_Intel_Pentium_4_3_00GHz,
224	#endif
225	/** @todo pentium, pentium mmx, pentium pro, pentium II, pentium III */
226	#ifdef VBOX_CPUDB_Intel_80486_h
227	&g_Entry_Intel_80486,
228	#endif
229	#ifdef VBOX_CPUDB_Intel_80386_h
230	&g_Entry_Intel_80386,
231	#endif
232	#ifdef VBOX_CPUDB_Intel_80286_h
233	&g_Entry_Intel_80286,
234	#endif
235	#ifdef VBOX_CPUDB_Intel_80186_h
236	&g_Entry_Intel_80186,
237	#endif
238	#ifdef VBOX_CPUDB_Intel_8086_h
239	&g_Entry_Intel_8086,
240	#endif
241
242	#ifdef VBOX_CPUDB_AMD_Ryzen_7_1800X_Eight_Core_h
243	&g_Entry_AMD_Ryzen_7_1800X_Eight_Core,
244	#endif
245	#ifdef VBOX_CPUDB_AMD_FX_8150_Eight_Core_h
246	&g_Entry_AMD_FX_8150_Eight_Core,
247	#endif
248	#ifdef VBOX_CPUDB_AMD_Phenom_II_X6_1100T_h
249	&g_Entry_AMD_Phenom_II_X6_1100T,
250	#endif
251	#ifdef VBOX_CPUDB_Quad_Core_AMD_Opteron_2384_h
252	&g_Entry_Quad_Core_AMD_Opteron_2384,
253	#endif
254	#ifdef VBOX_CPUDB_AMD_Athlon_64_X2_Dual_Core_4200_h
255	&g_Entry_AMD_Athlon_64_X2_Dual_Core_4200,
256	#endif
257	#ifdef VBOX_CPUDB_AMD_Athlon_64_3200_h
258	&g_Entry_AMD_Athlon_64_3200,
259	#endif
260
261	#ifdef VBOX_CPUDB_ZHAOXIN_KaiXian_KX_U5581_1_8GHz_h
262	&g_Entry_ZHAOXIN_KaiXian_KX_U5581_1_8GHz,
263	#endif
264
265	#ifdef VBOX_CPUDB_VIA_QuadCore_L4700_1_2_GHz_h
266	&g_Entry_VIA_QuadCore_L4700_1_2_GHz,
267	#endif
268
269	#ifdef VBOX_CPUDB_NEC_V20_h
270	&g_Entry_NEC_V20,
271	#endif
272
273	#ifdef VBOX_CPUDB_Hygon_C86_7185_32_core_h
274	&g_Entry_Hygon_C86_7185_32_core,
275	#endif
276	};
277
278
279	/**
280	* Returns the number of entries in the CPU database.
281	*
282	* @returns Number of entries.
283	* @sa PFNCPUMDBGETENTRIES
284	*/
285	VMMR3DECL(uint32_t) CPUMR3DbGetEntries(void)
286	{
287	return RT_ELEMENTS(g_apCpumDbEntries);
288	}
289
290
291	/**
292	* Returns CPU database entry for the given index.
293	*
294	* @returns Pointer the CPU database entry, NULL if index is out of bounds.
295	* @param idxCpuDb The index (0..CPUMR3DbGetEntries).
296	* @sa PFNCPUMDBGETENTRYBYINDEX
297	*/
298	VMMR3DECL(PCCPUMDBENTRY) CPUMR3DbGetEntryByIndex(uint32_t idxCpuDb)
299	{
300	AssertReturn(idxCpuDb <= RT_ELEMENTS(g_apCpumDbEntries), NULL);
301	return g_apCpumDbEntries[idxCpuDb];
302	}
303
304
305	/**
306	* Returns CPU database entry with the given name.
307	*
308	* @returns Pointer the CPU database entry, NULL if not found.
309	* @param pszName The name of the profile to return.
310	* @sa PFNCPUMDBGETENTRYBYNAME
311	*/
312	VMMR3DECL(PCCPUMDBENTRY) CPUMR3DbGetEntryByName(const char *pszName)
313	{
314	AssertPtrReturn(pszName, NULL);
315	AssertReturn(*pszName, NULL);
316	for (size_t i = 0; i < RT_ELEMENTS(g_apCpumDbEntries); i++)
317	if (strcmp(g_apCpumDbEntries[i]->pszName, pszName) == 0)
318	return g_apCpumDbEntries[i];
319	return NULL;
320	}
321
322
323
324	/**
325	* Binary search used by cpumR3MsrRangesInsert and has some special properties
326	* wrt to mismatches.
327	*
328	* @returns Insert location.
329	* @param paMsrRanges The MSR ranges to search.
330	* @param cMsrRanges The number of MSR ranges.
331	* @param uMsr What to search for.
332	*/
333	static uint32_t cpumR3MsrRangesBinSearch(PCCPUMMSRRANGE paMsrRanges, uint32_t cMsrRanges, uint32_t uMsr)
334	{
335	if (!cMsrRanges)
336	return 0;
337
338	uint32_t iStart = 0;
339	uint32_t iLast = cMsrRanges - 1;
340	for (;;)
341	{
342	uint32_t i = iStart + (iLast - iStart + 1) / 2;
343	if ( uMsr >= paMsrRanges[i].uFirst
344	&& uMsr <= paMsrRanges[i].uLast)
345	return i;
346	if (uMsr < paMsrRanges[i].uFirst)
347	{
348	if (i <= iStart)
349	return i;
350	iLast = i - 1;
351	}
352	else
353	{
354	if (i >= iLast)
355	{
356	if (i < cMsrRanges)
357	i++;
358	return i;
359	}
360	iStart = i + 1;
361	}
362	}
363	}
364
365
366	/**
367	* Ensures that there is space for at least @a cNewRanges in the table,
368	* reallocating the table if necessary.
369	*
370	* @returns Pointer to the MSR ranges on success, NULL on failure. On failure
371	* @a *ppaMsrRanges is freed and set to NULL.
372	* @param pVM The cross context VM structure. If NULL,
373	* use the process heap, otherwise the VM's hyper heap.
374	* @param ppaMsrRanges The variable pointing to the ranges (input/output).
375	* @param cMsrRanges The current number of ranges.
376	* @param cNewRanges The number of ranges to be added.
377	*/
378	static PCPUMMSRRANGE cpumR3MsrRangesEnsureSpace(PVM pVM, PCPUMMSRRANGE *ppaMsrRanges, uint32_t cMsrRanges, uint32_t cNewRanges)
379	{
380	if ( cMsrRanges + cNewRanges
381	> RT_ELEMENTS(pVM->cpum.s.GuestInfo.aMsrRanges) + (pVM ? 0 : 128 /* Catch too many MSRs in CPU reporter! */))
382	{
383	LogRel(("CPUM: Too many MSR ranges! %#x, max %#x\n",
384	cMsrRanges + cNewRanges, RT_ELEMENTS(pVM->cpum.s.GuestInfo.aMsrRanges)));
385	return NULL;
386	}
387	if (pVM)
388	{
389	Assert(cMsrRanges == pVM->cpum.s.GuestInfo.cMsrRanges);
390	Assert(*ppaMsrRanges == pVM->cpum.s.GuestInfo.aMsrRanges);
391	}
392	else
393	{
394	if (cMsrRanges + cNewRanges > RT_ALIGN_32(cMsrRanges, 16))
395	{
396
397	uint32_t const cNew = RT_ALIGN_32(cMsrRanges + cNewRanges, 16);
398	void pvNew = RTMemRealloc(ppaMsrRanges, cNew * sizeof(**ppaMsrRanges));
399	if (pvNew)
400	*ppaMsrRanges = (PCPUMMSRRANGE)pvNew;
401	else
402	{
403	RTMemFree(*ppaMsrRanges);
404	*ppaMsrRanges = NULL;
405	return NULL;
406	}
407	}
408	}
409
410	return *ppaMsrRanges;
411	}
412
413
414	/**
415	* Inserts a new MSR range in into an sorted MSR range array.
416	*
417	* If the new MSR range overlaps existing ranges, the existing ones will be
418	* adjusted/removed to fit in the new one.
419	*
420	* @returns VBox status code.
421	* @retval VINF_SUCCESS
422	* @retval VERR_NO_MEMORY
423	*
424	* @param pVM The cross context VM structure. If NULL,
425	* use the process heap, otherwise the VM's hyper heap.
426	* @param ppaMsrRanges The variable pointing to the ranges (input/output).
427	* Must be NULL if using the hyper heap.
428	* @param pcMsrRanges The variable holding number of ranges. Must be NULL
429	* if using the hyper heap.
430	* @param pNewRange The new range.
431	*/
432	int cpumR3MsrRangesInsert(PVM pVM, PCPUMMSRRANGE ppaMsrRanges, uint32_t pcMsrRanges, PCCPUMMSRRANGE pNewRange)
433	{
434	Assert(pNewRange->uLast >= pNewRange->uFirst);
435	Assert(pNewRange->enmRdFn > kCpumMsrRdFn_Invalid && pNewRange->enmRdFn < kCpumMsrRdFn_End);
436	Assert(pNewRange->enmWrFn > kCpumMsrWrFn_Invalid && pNewRange->enmWrFn < kCpumMsrWrFn_End);
437
438	/*
439	* Validate and use the VM's MSR ranges array if we are using the hyper heap.
440	*/
441	if (pVM)
442	{
443	AssertReturn(!ppaMsrRanges, VERR_INVALID_PARAMETER);
444	AssertReturn(!pcMsrRanges, VERR_INVALID_PARAMETER);
445	AssertReturn(pVM->cpum.s.GuestInfo.paMsrRangesR3 == pVM->cpum.s.GuestInfo.aMsrRanges, VERR_INTERNAL_ERROR_3);
446
447	ppaMsrRanges = &pVM->cpum.s.GuestInfo.paMsrRangesR3;
448	pcMsrRanges = &pVM->cpum.s.GuestInfo.cMsrRanges;
449	}
450	else
451	{
452	AssertReturn(ppaMsrRanges, VERR_INVALID_POINTER);
453	AssertReturn(pcMsrRanges, VERR_INVALID_POINTER);
454	}
455
456	uint32_t cMsrRanges = *pcMsrRanges;
457	PCPUMMSRRANGE paMsrRanges = *ppaMsrRanges;
458
459	/*
460	* Optimize the linear insertion case where we add new entries at the end.
461	*/
462	if ( cMsrRanges > 0
463	&& paMsrRanges[cMsrRanges - 1].uLast < pNewRange->uFirst)
464	{
465	paMsrRanges = cpumR3MsrRangesEnsureSpace(pVM, ppaMsrRanges, cMsrRanges, 1);
466	if (!paMsrRanges)
467	return VERR_NO_MEMORY;
468	paMsrRanges[cMsrRanges] = *pNewRange;
469	*pcMsrRanges += 1;
470	}
471	else
472	{
473	uint32_t i = cpumR3MsrRangesBinSearch(paMsrRanges, cMsrRanges, pNewRange->uFirst);
474	Assert(i == cMsrRanges \|\| pNewRange->uFirst <= paMsrRanges[i].uLast);
475	Assert(i == 0 \|\| pNewRange->uFirst > paMsrRanges[i - 1].uLast);
476
477	/*
478	* Adding an entirely new entry?
479	*/
480	if ( i >= cMsrRanges
481	\|\| pNewRange->uLast < paMsrRanges[i].uFirst)
482	{
483	paMsrRanges = cpumR3MsrRangesEnsureSpace(pVM, ppaMsrRanges, cMsrRanges, 1);
484	if (!paMsrRanges)
485	return VERR_NO_MEMORY;
486	if (i < cMsrRanges)
487	memmove(&paMsrRanges[i + 1], &paMsrRanges[i], (cMsrRanges - i) * sizeof(paMsrRanges[0]));
488	paMsrRanges[i] = *pNewRange;
489	*pcMsrRanges += 1;
490	}
491	/*
492	* Replace existing entry?
493	*/
494	else if ( pNewRange->uFirst == paMsrRanges[i].uFirst
495	&& pNewRange->uLast == paMsrRanges[i].uLast)
496	paMsrRanges[i] = *pNewRange;
497	/*
498	* Splitting an existing entry?
499	*/
500	else if ( pNewRange->uFirst > paMsrRanges[i].uFirst
501	&& pNewRange->uLast < paMsrRanges[i].uLast)
502	{
503	paMsrRanges = cpumR3MsrRangesEnsureSpace(pVM, ppaMsrRanges, cMsrRanges, 2);
504	if (!paMsrRanges)
505	return VERR_NO_MEMORY;
506	if (i < cMsrRanges)
507	memmove(&paMsrRanges[i + 2], &paMsrRanges[i], (cMsrRanges - i) * sizeof(paMsrRanges[0]));
508	paMsrRanges[i + 1] = *pNewRange;
509	paMsrRanges[i + 2] = paMsrRanges[i];
510	paMsrRanges[i ].uLast = pNewRange->uFirst - 1;
511	paMsrRanges[i + 2].uFirst = pNewRange->uLast + 1;
512	*pcMsrRanges += 2;
513	}
514	/*
515	* Complicated scenarios that can affect more than one range.
516	*
517	* The current code does not optimize memmove calls when replacing
518	* one or more existing ranges, because it's tedious to deal with and
519	* not expected to be a frequent usage scenario.
520	*/
521	else
522	{
523	/* Adjust start of first match? */
524	if ( pNewRange->uFirst <= paMsrRanges[i].uFirst
525	&& pNewRange->uLast < paMsrRanges[i].uLast)
526	paMsrRanges[i].uFirst = pNewRange->uLast + 1;
527	else
528	{
529	/* Adjust end of first match? */
530	if (pNewRange->uFirst > paMsrRanges[i].uFirst)
531	{
532	Assert(paMsrRanges[i].uLast >= pNewRange->uFirst);
533	paMsrRanges[i].uLast = pNewRange->uFirst - 1;
534	i++;
535	}
536	/* Replace the whole first match (lazy bird). */
537	else
538	{
539	if (i + 1 < cMsrRanges)
540	memmove(&paMsrRanges[i], &paMsrRanges[i + 1], (cMsrRanges - i - 1) * sizeof(paMsrRanges[0]));
541	cMsrRanges = *pcMsrRanges -= 1;
542	}
543
544	/* Do the new range affect more ranges? */
545	while ( i < cMsrRanges
546	&& pNewRange->uLast >= paMsrRanges[i].uFirst)
547	{
548	if (pNewRange->uLast < paMsrRanges[i].uLast)
549	{
550	/* Adjust the start of it, then we're done. */
551	paMsrRanges[i].uFirst = pNewRange->uLast + 1;
552	break;
553	}
554
555	/* Remove it entirely. */
556	if (i + 1 < cMsrRanges)
557	memmove(&paMsrRanges[i], &paMsrRanges[i + 1], (cMsrRanges - i - 1) * sizeof(paMsrRanges[0]));
558	cMsrRanges = *pcMsrRanges -= 1;
559	}
560	}
561
562	/* Now, perform a normal insertion. */
563	paMsrRanges = cpumR3MsrRangesEnsureSpace(pVM, ppaMsrRanges, cMsrRanges, 1);
564	if (!paMsrRanges)
565	return VERR_NO_MEMORY;
566	if (i < cMsrRanges)
567	memmove(&paMsrRanges[i + 1], &paMsrRanges[i], (cMsrRanges - i) * sizeof(paMsrRanges[0]));
568	paMsrRanges[i] = *pNewRange;
569	*pcMsrRanges += 1;
570	}
571	}
572
573	return VINF_SUCCESS;
574	}
575
576
577	/**
578	* Reconciles CPUID info with MSRs (selected ones).
579	*
580	* @returns VBox status code.
581	* @param pVM The cross context VM structure.
582	*/
583	int cpumR3MsrReconcileWithCpuId(PVM pVM)
584	{
585	PCCPUMMSRRANGE papToAdd[10];
586	uint32_t cToAdd = 0;
587
588	/*
589	* The IA32_FLUSH_CMD MSR was introduced in MCUs for CVS-2018-3646 and associates.
590	*/
591	if (pVM->cpum.s.GuestFeatures.fFlushCmd && !cpumLookupMsrRange(pVM, MSR_IA32_FLUSH_CMD))
592	{
593	static CPUMMSRRANGE const s_FlushCmd =
594	{
595	/.uFirst =/ MSR_IA32_FLUSH_CMD,
596	/.uLast =/ MSR_IA32_FLUSH_CMD,
597	/.enmRdFn =/ kCpumMsrRdFn_WriteOnly,
598	/.enmWrFn =/ kCpumMsrWrFn_Ia32FlushCmd,
599	/.offCpumCpu =/ UINT16_MAX,
600	/.fReserved =/ 0,
601	/.uValue =/ 0,
602	/.fWrIgnMask =/ 0,
603	/.fWrGpMask =/ ~MSR_IA32_FLUSH_CMD_F_L1D,
604	/.szName = / "IA32_FLUSH_CMD"
605	};
606	papToAdd[cToAdd++] = &s_FlushCmd;
607	}
608
609	/*
610	* The MSR_IA32_ARCH_CAPABILITIES was introduced in various spectre MCUs, or at least
611	* documented in relation to such.
612	*/
613	if (pVM->cpum.s.GuestFeatures.fArchCap && !cpumLookupMsrRange(pVM, MSR_IA32_ARCH_CAPABILITIES))
614	{
615	static CPUMMSRRANGE const s_ArchCaps =
616	{
617	/.uFirst =/ MSR_IA32_ARCH_CAPABILITIES,
618	/.uLast =/ MSR_IA32_ARCH_CAPABILITIES,
619	/.enmRdFn =/ kCpumMsrRdFn_Ia32ArchCapabilities,
620	/.enmWrFn =/ kCpumMsrWrFn_ReadOnly,
621	/.offCpumCpu =/ UINT16_MAX,
622	/.fReserved =/ 0,
623	/.uValue =/ 0,
624	/.fWrIgnMask =/ 0,
625	/.fWrGpMask =/ UINT64_MAX,
626	/.szName = / "IA32_ARCH_CAPABILITIES"
627	};
628	papToAdd[cToAdd++] = &s_ArchCaps;
629	}
630
631	/*
632	* Do the adding.
633	*/
634	for (uint32_t i = 0; i < cToAdd; i++)
635	{
636	PCCPUMMSRRANGE pRange = papToAdd[i];
637	LogRel(("CPUM: MSR/CPUID reconciliation insert: %#010x %s\n", pRange->uFirst, pRange->szName));
638	int rc = cpumR3MsrRangesInsert(NULL /* pVM */, &pVM->cpum.s.GuestInfo.paMsrRangesR3, &pVM->cpum.s.GuestInfo.cMsrRanges,
639	pRange);
640	if (RT_FAILURE(rc))
641	return rc;
642	}
643	return VINF_SUCCESS;
644	}
645
646
647	/**
648	* Worker for cpumR3MsrApplyFudge that applies one table.
649	*
650	* @returns VBox status code.
651	* @param pVM The cross context VM structure.
652	* @param paRanges Array of MSRs to fudge.
653	* @param cRanges Number of MSRs in the array.
654	*/
655	static int cpumR3MsrApplyFudgeTable(PVM pVM, PCCPUMMSRRANGE paRanges, size_t cRanges)
656	{
657	for (uint32_t i = 0; i < cRanges; i++)
658	if (!cpumLookupMsrRange(pVM, paRanges[i].uFirst))
659	{
660	LogRel(("CPUM: MSR fudge: %#010x %s\n", paRanges[i].uFirst, paRanges[i].szName));
661	int rc = cpumR3MsrRangesInsert(NULL /* pVM */, &pVM->cpum.s.GuestInfo.paMsrRangesR3, &pVM->cpum.s.GuestInfo.cMsrRanges,
662	&paRanges[i]);
663	if (RT_FAILURE(rc))
664	return rc;
665	}
666	return VINF_SUCCESS;
667	}
668
669
670	/**
671	* Fudges the MSRs that guest are known to access in some odd cases.
672	*
673	* A typical example is a VM that has been moved between different hosts where
674	* for instance the cpu vendor differs.
675	*
676	* Another example is older CPU profiles (e.g. Atom Bonnet) for newer CPUs (e.g.
677	* Atom Silvermont), where features reported thru CPUID aren't present in the
678	* MSRs (e.g. AMD64_TSC_AUX).
679	*
680	*
681	* @returns VBox status code.
682	* @param pVM The cross context VM structure.
683	*/
684	int cpumR3MsrApplyFudge(PVM pVM)
685	{
686	/*
687	* Basic.
688	*/
689	static CPUMMSRRANGE const s_aFudgeMsrs[] =
690	{
691	MFO(0x00000000, "IA32_P5_MC_ADDR", Ia32P5McAddr),
692	MFX(0x00000001, "IA32_P5_MC_TYPE", Ia32P5McType, Ia32P5McType, 0, 0, UINT64_MAX),
693	MVO(0x00000017, "IA32_PLATFORM_ID", 0),
694	MFN(0x0000001b, "IA32_APIC_BASE", Ia32ApicBase, Ia32ApicBase),
695	MVI(0x0000008b, "BIOS_SIGN", 0),
696	MFX(0x000000fe, "IA32_MTRRCAP", Ia32MtrrCap, ReadOnly, 0x508, 0, 0),
697	MFX(0x00000179, "IA32_MCG_CAP", Ia32McgCap, ReadOnly, 0x005, 0, 0),
698	MFX(0x0000017a, "IA32_MCG_STATUS", Ia32McgStatus, Ia32McgStatus, 0, ~(uint64_t)UINT32_MAX, 0),
699	MFN(0x000001a0, "IA32_MISC_ENABLE", Ia32MiscEnable, Ia32MiscEnable),
700	MFN(0x000001d9, "IA32_DEBUGCTL", Ia32DebugCtl, Ia32DebugCtl),
701	MFO(0x000001db, "P6_LAST_BRANCH_FROM_IP", P6LastBranchFromIp),
702	MFO(0x000001dc, "P6_LAST_BRANCH_TO_IP", P6LastBranchToIp),
703	MFO(0x000001dd, "P6_LAST_INT_FROM_IP", P6LastIntFromIp),
704	MFO(0x000001de, "P6_LAST_INT_TO_IP", P6LastIntToIp),
705	MFS(0x00000277, "IA32_PAT", Ia32Pat, Ia32Pat, Guest.msrPAT),
706	MFZ(0x000002ff, "IA32_MTRR_DEF_TYPE", Ia32MtrrDefType, Ia32MtrrDefType, GuestMsrs.msr.MtrrDefType, 0, ~(uint64_t)0xc07),
707	MFN(0x00000400, "IA32_MCi_CTL_STATUS_ADDR_MISC", Ia32McCtlStatusAddrMiscN, Ia32McCtlStatusAddrMiscN),
708	};
709	int rc = cpumR3MsrApplyFudgeTable(pVM, &s_aFudgeMsrs[0], RT_ELEMENTS(s_aFudgeMsrs));
710	AssertLogRelRCReturn(rc, rc);
711
712	/*
713	* XP might mistake opterons and other newer CPUs for P4s.
714	*/
715	if (pVM->cpum.s.GuestFeatures.uFamily >= 0xf)
716	{
717	static CPUMMSRRANGE const s_aP4FudgeMsrs[] =
718	{
719	MFX(0x0000002c, "P4_EBC_FREQUENCY_ID", IntelP4EbcFrequencyId, IntelP4EbcFrequencyId, 0xf12010f, UINT64_MAX, 0),
720	};
721	rc = cpumR3MsrApplyFudgeTable(pVM, &s_aP4FudgeMsrs[0], RT_ELEMENTS(s_aP4FudgeMsrs));
722	AssertLogRelRCReturn(rc, rc);
723	}
724
725	if (pVM->cpum.s.GuestFeatures.fRdTscP)
726	{
727	static CPUMMSRRANGE const s_aRdTscPFudgeMsrs[] =
728	{
729	MFX(0xc0000103, "AMD64_TSC_AUX", Amd64TscAux, Amd64TscAux, 0, 0, ~(uint64_t)UINT32_MAX),
730	};
731	rc = cpumR3MsrApplyFudgeTable(pVM, &s_aRdTscPFudgeMsrs[0], RT_ELEMENTS(s_aRdTscPFudgeMsrs));
732	AssertLogRelRCReturn(rc, rc);
733	}
734
735	/*
736	* Windows 10 incorrectly writes to MSR_IA32_TSX_CTRL without checking
737	* CPUID.ARCH_CAP(EAX=7h,ECX=0):EDX[bit 29] or the MSR feature bits in
738	* MSR_IA32_ARCH_CAPABILITIES[bit 7], see @bugref{9630}.
739	* Ignore writes to this MSR and return 0 on reads.
740	*/
741	if (pVM->cpum.s.GuestFeatures.fArchCap)
742	{
743	static CPUMMSRRANGE const s_aTsxCtrl[] =
744	{
745	MVI(MSR_IA32_TSX_CTRL, "IA32_TSX_CTRL", 0),
746	};
747	rc = cpumR3MsrApplyFudgeTable(pVM, &s_aTsxCtrl[0], RT_ELEMENTS(s_aTsxCtrl));
748	AssertLogRelRCReturn(rc, rc);
749	}
750
751	return rc;
752	}
753
754
755	/**
756	* Do we consider @a enmConsider a better match for @a enmTarget than
757	* @a enmFound?
758	*
759	* Only called when @a enmConsider isn't exactly what we're looking for.
760	*
761	* @returns true/false.
762	* @param enmConsider The new microarch to consider.
763	* @param enmTarget The target microarch.
764	* @param enmFound The best microarch match we've found thus far.
765	*/
766	DECLINLINE(bool) cpumR3DbIsBetterMarchMatch(CPUMMICROARCH enmConsider, CPUMMICROARCH enmTarget, CPUMMICROARCH enmFound)
767	{
768	Assert(enmConsider != enmTarget);
769
770	/*
771	* If we've got an march match, don't bother with enmConsider.
772	*/
773	if (enmFound == enmTarget)
774	return false;
775
776	/*
777	* Found is below: Pick 'consider' if it's closer to the target or above it.
778	*/
779	if (enmFound < enmTarget)
780	return enmConsider > enmFound;
781
782	/*
783	* Found is above: Pick 'consider' if it's also above (paranoia: or equal)
784	* and but closer to the target.
785	*/
786	return enmConsider >= enmTarget && enmConsider < enmFound;
787	}
788
789
790	/**
791	* Do we consider @a enmConsider a better match for @a enmTarget than
792	* @a enmFound?
793	*
794	* Only called for intel family 06h CPUs.
795	*
796	* @returns true/false.
797	* @param enmConsider The new microarch to consider.
798	* @param enmTarget The target microarch.
799	* @param enmFound The best microarch match we've found thus far.
800	*/
801	static bool cpumR3DbIsBetterIntelFam06Match(CPUMMICROARCH enmConsider, CPUMMICROARCH enmTarget, CPUMMICROARCH enmFound)
802	{
803	/* Check intel family 06h claims. */
804	AssertReturn(enmConsider >= kCpumMicroarch_Intel_P6_Core_Atom_First && enmConsider <= kCpumMicroarch_Intel_P6_Core_Atom_End,
805	false);
806	AssertReturn( (enmTarget >= kCpumMicroarch_Intel_P6_Core_Atom_First && enmTarget <= kCpumMicroarch_Intel_P6_Core_Atom_End)
807	\|\| enmTarget == kCpumMicroarch_Intel_Unknown,
808	false);
809
810	/* Put matches out of the way. */
811	if (enmConsider == enmTarget)
812	return true;
813	if (enmFound == enmTarget)
814	return false;
815
816	/* If found isn't a family 06h march, whatever we're considering must be a better choice. */
817	if ( enmFound < kCpumMicroarch_Intel_P6_Core_Atom_First
818	\|\| enmFound > kCpumMicroarch_Intel_P6_Core_Atom_End)
819	return true;
820
821	/*
822	* The family 06h stuff is split into three categories:
823	* - Common P6 heritage
824	* - Core
825	* - Atom
826	*
827	* Determin which of the three arguments are Atom marchs, because that's
828	* all we need to make the right choice.
829	*/
830	bool const fConsiderAtom = enmConsider >= kCpumMicroarch_Intel_Atom_First;
831	bool const fTargetAtom = enmTarget >= kCpumMicroarch_Intel_Atom_First;
832	bool const fFoundAtom = enmFound >= kCpumMicroarch_Intel_Atom_First;
833
834	/*
835	* Want atom:
836	*/
837	if (fTargetAtom)
838	{
839	/* Pick the atom if we've got one of each.*/
840	if (fConsiderAtom != fFoundAtom)
841	return fConsiderAtom;
842	/* If we haven't got any atoms under consideration, pick a P6 or the earlier core.
843	Note! Not entirely sure Dothan is the best choice, but it'll do for now. */
844	if (!fConsiderAtom)
845	{
846	if (enmConsider > enmFound)
847	return enmConsider <= kCpumMicroarch_Intel_P6_M_Dothan;
848	return enmFound > kCpumMicroarch_Intel_P6_M_Dothan;
849	}
850	/* else: same category, default comparison rules. */
851	Assert(fConsiderAtom && fFoundAtom);
852	}
853	/*
854	* Want non-atom:
855	*/
856	/* Pick the non-atom if we've got one of each. */
857	else if (fConsiderAtom != fFoundAtom)
858	return fFoundAtom;
859	/* If we've only got atoms under consideration, pick the older one just to pick something. */
860	else if (fConsiderAtom)
861	return enmConsider < enmFound;
862	else
863	Assert(!fConsiderAtom && !fFoundAtom);
864
865	/*
866	* Same basic category. Do same compare as caller.
867	*/
868	return cpumR3DbIsBetterMarchMatch(enmConsider, enmTarget, enmFound);
869	}
870
871
872	int cpumR3DbGetCpuInfo(const char *pszName, PCPUMINFO pInfo)
873	{
874	CPUMDBENTRY const *pEntry = NULL;
875	int rc;
876
877	if (!strcmp(pszName, "host"))
878	#if defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_X86)
879	{
880	/*
881	* Create a CPU database entry for the host CPU. This means getting
882	* the CPUID bits from the real CPU and grabbing the closest matching
883	* database entry for MSRs.
884	*/
885	rc = CPUMR3CpuIdDetectUnknownLeafMethod(&pInfo->enmUnknownCpuIdMethod, &pInfo->DefCpuId);
886	if (RT_FAILURE(rc))
887	return rc;
888	rc = CPUMR3CpuIdCollectLeaves(&pInfo->paCpuIdLeavesR3, &pInfo->cCpuIdLeaves);
889	if (RT_FAILURE(rc))
890	return rc;
891	pInfo->fMxCsrMask = CPUMR3DeterminHostMxCsrMask();
892
893	/* Lookup database entry for MSRs. */
894	CPUMCPUVENDOR const enmVendor = CPUMR3CpuIdDetectVendorEx(pInfo->paCpuIdLeavesR3[0].uEax,
895	pInfo->paCpuIdLeavesR3[0].uEbx,
896	pInfo->paCpuIdLeavesR3[0].uEcx,
897	pInfo->paCpuIdLeavesR3[0].uEdx);
898	uint32_t const uStd1Eax = pInfo->paCpuIdLeavesR3[1].uEax;
899	uint8_t const uFamily = ASMGetCpuFamily(uStd1Eax);
900	uint8_t const uModel = ASMGetCpuModel(uStd1Eax, enmVendor == CPUMCPUVENDOR_INTEL);
901	uint8_t const uStepping = ASMGetCpuStepping(uStd1Eax);
902	CPUMMICROARCH const enmMicroarch = CPUMR3CpuIdDetermineMicroarchEx(enmVendor, uFamily, uModel, uStepping);
903
904	for (unsigned i = 0; i < RT_ELEMENTS(g_apCpumDbEntries); i++)
905	{
906	CPUMDBENTRY const *pCur = g_apCpumDbEntries[i];
907	if ((CPUMCPUVENDOR)pCur->enmVendor == enmVendor)
908	{
909	/* Match against Family, Microarch, model and stepping. Except
910	for family, always match the closer with preference given to
911	the later/older ones. */
912	if (pCur->uFamily == uFamily)
913	{
914	if (pCur->enmMicroarch == enmMicroarch)
915	{
916	if (pCur->uModel == uModel)
917	{
918	if (pCur->uStepping == uStepping)
919	{
920	/* Perfect match. */
921	pEntry = pCur;
922	break;
923	}
924
925	if ( !pEntry
926	\|\| pEntry->uModel != uModel
927	\|\| pEntry->enmMicroarch != enmMicroarch
928	\|\| pEntry->uFamily != uFamily)
929	pEntry = pCur;
930	else if ( pCur->uStepping >= uStepping
931	? pCur->uStepping < pEntry->uStepping \|\| pEntry->uStepping < uStepping
932	: pCur->uStepping > pEntry->uStepping)
933	pEntry = pCur;
934	}
935	else if ( !pEntry
936	\|\| pEntry->enmMicroarch != enmMicroarch
937	\|\| pEntry->uFamily != uFamily)
938	pEntry = pCur;
939	else if ( pCur->uModel >= uModel
940	? pCur->uModel < pEntry->uModel \|\| pEntry->uModel < uModel
941	: pCur->uModel > pEntry->uModel)
942	pEntry = pCur;
943	}
944	else if ( !pEntry
945	\|\| pEntry->uFamily != uFamily)
946	pEntry = pCur;
947	/* Special march matching rules applies to intel family 06h. */
948	else if ( enmVendor == CPUMCPUVENDOR_INTEL
949	&& uFamily == 6
950	? cpumR3DbIsBetterIntelFam06Match(pCur->enmMicroarch, enmMicroarch, pEntry->enmMicroarch)
951	: cpumR3DbIsBetterMarchMatch(pCur->enmMicroarch, enmMicroarch, pEntry->enmMicroarch))
952	pEntry = pCur;
953	}
954	/* We don't do closeness matching on family, we use the first
955	entry for the CPU vendor instead. (P4 workaround.) */
956	else if (!pEntry)
957	pEntry = pCur;
958	}
959	}
960
961	if (pEntry)
962	LogRel(("CPUM: Matched host CPU %s %#x/%#x/%#x %s with CPU DB entry '%s' (%s %#x/%#x/%#x %s)\n",
963	CPUMR3CpuVendorName(enmVendor), uFamily, uModel, uStepping, CPUMR3MicroarchName(enmMicroarch),
964	pEntry->pszName, CPUMR3CpuVendorName((CPUMCPUVENDOR)pEntry->enmVendor), pEntry->uFamily, pEntry->uModel,
965	pEntry->uStepping, CPUMR3MicroarchName(pEntry->enmMicroarch) ));
966	else
967	{
968	pEntry = g_apCpumDbEntries[0];
969	LogRel(("CPUM: No matching processor database entry %s %#x/%#x/%#x %s, falling back on '%s'\n",
970	CPUMR3CpuVendorName(enmVendor), uFamily, uModel, uStepping, CPUMR3MicroarchName(enmMicroarch),
971	pEntry->pszName));
972	}
973	}
974	else
975	#else
976	pszName = g_apCpumDbEntries[0]->pszName; /* Just pick the first entry for non-x86 hosts. */
977	#endif
978	{
979	/*
980	* We're supposed to be emulating a specific CPU that is included in
981	* our CPU database. The CPUID tables needs to be copied onto the
982	* heap so the caller can modify them and so they can be freed like
983	* in the host case above.
984	*/
985	for (unsigned i = 0; i < RT_ELEMENTS(g_apCpumDbEntries); i++)
986	if (!strcmp(pszName, g_apCpumDbEntries[i]->pszName))
987	{
988	pEntry = g_apCpumDbEntries[i];
989	break;
990	}
991	if (!pEntry)
992	{
993	LogRel(("CPUM: Cannot locate any CPU by the name '%s'\n", pszName));
994	return VERR_CPUM_DB_CPU_NOT_FOUND;
995	}
996
997	pInfo->cCpuIdLeaves = pEntry->cCpuIdLeaves;
998	if (pEntry->cCpuIdLeaves)
999	{
1000	/* Must allocate a multiple of 16 here, matching cpumR3CpuIdEnsureSpace. */
1001	size_t cbExtra = sizeof(pEntry->paCpuIdLeaves[0]) * (RT_ALIGN(pEntry->cCpuIdLeaves, 16) - pEntry->cCpuIdLeaves);
1002	pInfo->paCpuIdLeavesR3 = (PCPUMCPUIDLEAF)RTMemDupEx(pEntry->paCpuIdLeaves,
1003	sizeof(pEntry->paCpuIdLeaves[0]) * pEntry->cCpuIdLeaves,
1004	cbExtra);
1005	if (!pInfo->paCpuIdLeavesR3)
1006	return VERR_NO_MEMORY;
1007	}
1008	else
1009	pInfo->paCpuIdLeavesR3 = NULL;
1010
1011	pInfo->enmUnknownCpuIdMethod = pEntry->enmUnknownCpuId;
1012	pInfo->DefCpuId = pEntry->DefUnknownCpuId;
1013	pInfo->fMxCsrMask = pEntry->fMxCsrMask;
1014
1015	LogRel(("CPUM: Using CPU DB entry '%s' (%s %#x/%#x/%#x %s)\n",
1016	pEntry->pszName, CPUMR3CpuVendorName((CPUMCPUVENDOR)pEntry->enmVendor),
1017	pEntry->uFamily, pEntry->uModel, pEntry->uStepping, CPUMR3MicroarchName(pEntry->enmMicroarch) ));
1018	}
1019
1020	pInfo->fMsrMask = pEntry->fMsrMask;
1021	pInfo->iFirstExtCpuIdLeaf = 0; /* Set by caller. */
1022	pInfo->uScalableBusFreq = pEntry->uScalableBusFreq;
1023
1024	/*
1025	* Copy the MSR range.
1026	*/
1027	uint32_t cMsrs = 0;
1028	PCPUMMSRRANGE paMsrs = NULL;
1029
1030	PCCPUMMSRRANGE pCurMsr = pEntry->paMsrRanges;
1031	uint32_t cLeft = pEntry->cMsrRanges;
1032	while (cLeft-- > 0)
1033	{
1034	rc = cpumR3MsrRangesInsert(NULL /* pVM */, &paMsrs, &cMsrs, pCurMsr);
1035	if (RT_FAILURE(rc))
1036	{
1037	Assert(!paMsrs); /* The above function frees this. */
1038	RTMemFree(pInfo->paCpuIdLeavesR3);
1039	pInfo->paCpuIdLeavesR3 = NULL;
1040	return rc;
1041	}
1042	pCurMsr++;
1043	}
1044
1045	pInfo->paMsrRangesR3 = paMsrs;
1046	pInfo->cMsrRanges = cMsrs;
1047	return VINF_SUCCESS;
1048	}
1049
1050
1051	/**
1052	* Insert an MSR range into the VM.
1053	*
1054	* If the new MSR range overlaps existing ranges, the existing ones will be
1055	* adjusted/removed to fit in the new one.
1056	*
1057	* @returns VBox status code.
1058	* @param pVM The cross context VM structure.
1059	* @param pNewRange Pointer to the MSR range being inserted.
1060	*/
1061	VMMR3DECL(int) CPUMR3MsrRangesInsert(PVM pVM, PCCPUMMSRRANGE pNewRange)
1062	{
1063	AssertReturn(pVM, VERR_INVALID_PARAMETER);
1064	AssertReturn(pNewRange, VERR_INVALID_PARAMETER);
1065
1066	return cpumR3MsrRangesInsert(pVM, NULL /* ppaMsrRanges /, NULL / pcMsrRanges */, pNewRange);
1067	}
1068
1069
1070	/**
1071	* Register statistics for the MSRs.
1072	*
1073	* This must not be called before the MSRs have been finalized and moved to the
1074	* hyper heap.
1075	*
1076	* @returns VBox status code.
1077	* @param pVM The cross context VM structure.
1078	*/
1079	int cpumR3MsrRegStats(PVM pVM)
1080	{
1081	/*
1082	* Global statistics.
1083	*/
1084	PCPUM pCpum = &pVM->cpum.s;
1085	STAM_REL_REG(pVM, &pCpum->cMsrReads, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/Reads",
1086	STAMUNIT_OCCURENCES, "All RDMSRs making it to CPUM.");
1087	STAM_REL_REG(pVM, &pCpum->cMsrReadsRaiseGp, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/ReadsRaisingGP",
1088	STAMUNIT_OCCURENCES, "RDMSR raising #GPs, except unknown MSRs.");
1089	STAM_REL_REG(pVM, &pCpum->cMsrReadsUnknown, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/ReadsUnknown",
1090	STAMUNIT_OCCURENCES, "RDMSR on unknown MSRs (raises #GP).");
1091	STAM_REL_REG(pVM, &pCpum->cMsrWrites, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/Writes",
1092	STAMUNIT_OCCURENCES, "All WRMSRs making it to CPUM.");
1093	STAM_REL_REG(pVM, &pCpum->cMsrWritesRaiseGp, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/WritesRaisingGP",
1094	STAMUNIT_OCCURENCES, "WRMSR raising #GPs, except unknown MSRs.");
1095	STAM_REL_REG(pVM, &pCpum->cMsrWritesToIgnoredBits, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/WritesToIgnoredBits",
1096	STAMUNIT_OCCURENCES, "Writing of ignored bits.");
1097	STAM_REL_REG(pVM, &pCpum->cMsrWritesUnknown, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/WritesUnknown",
1098	STAMUNIT_OCCURENCES, "WRMSR on unknown MSRs (raises #GP).");
1099
1100
1101	# ifdef VBOX_WITH_STATISTICS
1102	/*
1103	* Per range.
1104	*/
1105	PCPUMMSRRANGE paRanges = pVM->cpum.s.GuestInfo.paMsrRangesR3;
1106	uint32_t cRanges = pVM->cpum.s.GuestInfo.cMsrRanges;
1107	for (uint32_t i = 0; i < cRanges; i++)
1108	{
1109	char szName[160];
1110	ssize_t cchName;
1111
1112	if (paRanges[i].uFirst == paRanges[i].uLast)
1113	cchName = RTStrPrintf(szName, sizeof(szName), "/CPUM/MSRs/%#010x-%s",
1114	paRanges[i].uFirst, paRanges[i].szName);
1115	else
1116	cchName = RTStrPrintf(szName, sizeof(szName), "/CPUM/MSRs/%#010x-%#010x-%s",
1117	paRanges[i].uFirst, paRanges[i].uLast, paRanges[i].szName);
1118
1119	RTStrCopy(&szName[cchName], sizeof(szName) - cchName, "-reads");
1120	STAMR3Register(pVM, &paRanges[i].cReads, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, szName, STAMUNIT_OCCURENCES, "RDMSR");
1121
1122	RTStrCopy(&szName[cchName], sizeof(szName) - cchName, "-writes");
1123	STAMR3Register(pVM, &paRanges[i].cWrites, STAMTYPE_COUNTER, STAMVISIBILITY_USED, szName, STAMUNIT_OCCURENCES, "WRMSR");
1124
1125	RTStrCopy(&szName[cchName], sizeof(szName) - cchName, "-GPs");
1126	STAMR3Register(pVM, &paRanges[i].cGps, STAMTYPE_COUNTER, STAMVISIBILITY_USED, szName, STAMUNIT_OCCURENCES, "#GPs");
1127
1128	RTStrCopy(&szName[cchName], sizeof(szName) - cchName, "-ign-bits-writes");
1129	STAMR3Register(pVM, &paRanges[i].cIgnoredBits, STAMTYPE_COUNTER, STAMVISIBILITY_USED, szName, STAMUNIT_OCCURENCES, "WRMSR w/ ignored bits");
1130	}
1131	# endif /* VBOX_WITH_STATISTICS */
1132
1133	return VINF_SUCCESS;
1134	}
1135
1136	#endif /* !CPUM_DB_STANDALONE */
1137

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source: vbox/trunk/src/VBox/VMM/VMMR3/CPUMR3Db.cpp@ 91266

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