CPUMR3Db.cpp@ 88654

Last change on this file since 88654 was 87255, checked in by vboxsync, 4 years ago
VMM: Adjustments for bugref:9898.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 45.0 KB

Line
1	/* $Id: CPUMR3Db.cpp 87255 2021-01-14 23:20:17Z 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	uint32_t cMsrRangesAllocated;
381	if (!pVM)
382	cMsrRangesAllocated = RT_ALIGN_32(cMsrRanges, 16);
383	else
384	{
385	/*
386	* We're using the hyper heap now, but when the range array was copied over to it from
387	* the host-context heap, we only copy the exact size and not the ensured size.
388	* See @bugref{7270}.
389	*/
390	cMsrRangesAllocated = cMsrRanges;
391	}
392	if (cMsrRangesAllocated < cMsrRanges + cNewRanges)
393	{
394	void *pvNew;
395	uint32_t cNew = RT_ALIGN_32(cMsrRanges + cNewRanges, 16);
396	if (pVM)
397	{
398	Assert(ppaMsrRanges == &pVM->cpum.s.GuestInfo.paMsrRangesR3);
399	Assert(cMsrRanges == pVM->cpum.s.GuestInfo.cMsrRanges);
400
401	size_t cb = cMsrRangesAllocated * sizeof(**ppaMsrRanges);
402	size_t cbNew = cNew * sizeof(**ppaMsrRanges);
403	int rc = MMR3HyperRealloc(pVM, *ppaMsrRanges, cb, 32, MM_TAG_CPUM_MSRS, cbNew, &pvNew);
404	if (RT_FAILURE(rc))
405	{
406	*ppaMsrRanges = NULL;
407	pVM->cpum.s.GuestInfo.paMsrRangesR0 = NIL_RTR0PTR;
408	LogRel(("CPUM: cpumR3MsrRangesEnsureSpace: MMR3HyperRealloc failed. rc=%Rrc\n", rc));
409	return NULL;
410	}
411	*ppaMsrRanges = (PCPUMMSRRANGE)pvNew;
412	}
413	else
414	{
415	pvNew = RTMemRealloc(ppaMsrRanges, cNew sizeof(**ppaMsrRanges));
416	if (!pvNew)
417	{
418	RTMemFree(*ppaMsrRanges);
419	*ppaMsrRanges = NULL;
420	return NULL;
421	}
422	}
423	*ppaMsrRanges = (PCPUMMSRRANGE)pvNew;
424	}
425
426	if (pVM)
427	{
428	/* Update the R0 pointer. */
429	Assert(ppaMsrRanges == &pVM->cpum.s.GuestInfo.paMsrRangesR3);
430	pVM->cpum.s.GuestInfo.paMsrRangesR0 = MMHyperR3ToR0(pVM, *ppaMsrRanges);
431	}
432
433	return *ppaMsrRanges;
434	}
435
436
437	/**
438	* Inserts a new MSR range in into an sorted MSR range array.
439	*
440	* If the new MSR range overlaps existing ranges, the existing ones will be
441	* adjusted/removed to fit in the new one.
442	*
443	* @returns VBox status code.
444	* @retval VINF_SUCCESS
445	* @retval VERR_NO_MEMORY
446	*
447	* @param pVM The cross context VM structure. If NULL,
448	* use the process heap, otherwise the VM's hyper heap.
449	* @param ppaMsrRanges The variable pointing to the ranges (input/output).
450	* Must be NULL if using the hyper heap.
451	* @param pcMsrRanges The variable holding number of ranges. Must be NULL
452	* if using the hyper heap.
453	* @param pNewRange The new range.
454	*/
455	int cpumR3MsrRangesInsert(PVM pVM, PCPUMMSRRANGE ppaMsrRanges, uint32_t pcMsrRanges, PCCPUMMSRRANGE pNewRange)
456	{
457	Assert(pNewRange->uLast >= pNewRange->uFirst);
458	Assert(pNewRange->enmRdFn > kCpumMsrRdFn_Invalid && pNewRange->enmRdFn < kCpumMsrRdFn_End);
459	Assert(pNewRange->enmWrFn > kCpumMsrWrFn_Invalid && pNewRange->enmWrFn < kCpumMsrWrFn_End);
460
461	/*
462	* Validate and use the VM's MSR ranges array if we are using the hyper heap.
463	*/
464	if (pVM)
465	{
466	AssertReturn(!ppaMsrRanges, VERR_INVALID_PARAMETER);
467	AssertReturn(!pcMsrRanges, VERR_INVALID_PARAMETER);
468
469	ppaMsrRanges = &pVM->cpum.s.GuestInfo.paMsrRangesR3;
470	pcMsrRanges = &pVM->cpum.s.GuestInfo.cMsrRanges;
471	}
472	else
473	{
474	AssertReturn(ppaMsrRanges, VERR_INVALID_POINTER);
475	AssertReturn(pcMsrRanges, VERR_INVALID_POINTER);
476	}
477
478	uint32_t cMsrRanges = *pcMsrRanges;
479	PCPUMMSRRANGE paMsrRanges = *ppaMsrRanges;
480
481	/*
482	* Optimize the linear insertion case where we add new entries at the end.
483	*/
484	if ( cMsrRanges > 0
485	&& paMsrRanges[cMsrRanges - 1].uLast < pNewRange->uFirst)
486	{
487	paMsrRanges = cpumR3MsrRangesEnsureSpace(pVM, ppaMsrRanges, cMsrRanges, 1);
488	if (!paMsrRanges)
489	return VERR_NO_MEMORY;
490	paMsrRanges[cMsrRanges] = *pNewRange;
491	*pcMsrRanges += 1;
492	}
493	else
494	{
495	uint32_t i = cpumR3MsrRangesBinSearch(paMsrRanges, cMsrRanges, pNewRange->uFirst);
496	Assert(i == cMsrRanges \|\| pNewRange->uFirst <= paMsrRanges[i].uLast);
497	Assert(i == 0 \|\| pNewRange->uFirst > paMsrRanges[i - 1].uLast);
498
499	/*
500	* Adding an entirely new entry?
501	*/
502	if ( i >= cMsrRanges
503	\|\| pNewRange->uLast < paMsrRanges[i].uFirst)
504	{
505	paMsrRanges = cpumR3MsrRangesEnsureSpace(pVM, ppaMsrRanges, cMsrRanges, 1);
506	if (!paMsrRanges)
507	return VERR_NO_MEMORY;
508	if (i < cMsrRanges)
509	memmove(&paMsrRanges[i + 1], &paMsrRanges[i], (cMsrRanges - i) * sizeof(paMsrRanges[0]));
510	paMsrRanges[i] = *pNewRange;
511	*pcMsrRanges += 1;
512	}
513	/*
514	* Replace existing entry?
515	*/
516	else if ( pNewRange->uFirst == paMsrRanges[i].uFirst
517	&& pNewRange->uLast == paMsrRanges[i].uLast)
518	paMsrRanges[i] = *pNewRange;
519	/*
520	* Splitting an existing entry?
521	*/
522	else if ( pNewRange->uFirst > paMsrRanges[i].uFirst
523	&& pNewRange->uLast < paMsrRanges[i].uLast)
524	{
525	paMsrRanges = cpumR3MsrRangesEnsureSpace(pVM, ppaMsrRanges, cMsrRanges, 2);
526	if (!paMsrRanges)
527	return VERR_NO_MEMORY;
528	if (i < cMsrRanges)
529	memmove(&paMsrRanges[i + 2], &paMsrRanges[i], (cMsrRanges - i) * sizeof(paMsrRanges[0]));
530	paMsrRanges[i + 1] = *pNewRange;
531	paMsrRanges[i + 2] = paMsrRanges[i];
532	paMsrRanges[i ].uLast = pNewRange->uFirst - 1;
533	paMsrRanges[i + 2].uFirst = pNewRange->uLast + 1;
534	*pcMsrRanges += 2;
535	}
536	/*
537	* Complicated scenarios that can affect more than one range.
538	*
539	* The current code does not optimize memmove calls when replacing
540	* one or more existing ranges, because it's tedious to deal with and
541	* not expected to be a frequent usage scenario.
542	*/
543	else
544	{
545	/* Adjust start of first match? */
546	if ( pNewRange->uFirst <= paMsrRanges[i].uFirst
547	&& pNewRange->uLast < paMsrRanges[i].uLast)
548	paMsrRanges[i].uFirst = pNewRange->uLast + 1;
549	else
550	{
551	/* Adjust end of first match? */
552	if (pNewRange->uFirst > paMsrRanges[i].uFirst)
553	{
554	Assert(paMsrRanges[i].uLast >= pNewRange->uFirst);
555	paMsrRanges[i].uLast = pNewRange->uFirst - 1;
556	i++;
557	}
558	/* Replace the whole first match (lazy bird). */
559	else
560	{
561	if (i + 1 < cMsrRanges)
562	memmove(&paMsrRanges[i], &paMsrRanges[i + 1], (cMsrRanges - i - 1) * sizeof(paMsrRanges[0]));
563	cMsrRanges = *pcMsrRanges -= 1;
564	}
565
566	/* Do the new range affect more ranges? */
567	while ( i < cMsrRanges
568	&& pNewRange->uLast >= paMsrRanges[i].uFirst)
569	{
570	if (pNewRange->uLast < paMsrRanges[i].uLast)
571	{
572	/* Adjust the start of it, then we're done. */
573	paMsrRanges[i].uFirst = pNewRange->uLast + 1;
574	break;
575	}
576
577	/* Remove it entirely. */
578	if (i + 1 < cMsrRanges)
579	memmove(&paMsrRanges[i], &paMsrRanges[i + 1], (cMsrRanges - i - 1) * sizeof(paMsrRanges[0]));
580	cMsrRanges = *pcMsrRanges -= 1;
581	}
582	}
583
584	/* Now, perform a normal insertion. */
585	paMsrRanges = cpumR3MsrRangesEnsureSpace(pVM, ppaMsrRanges, cMsrRanges, 1);
586	if (!paMsrRanges)
587	return VERR_NO_MEMORY;
588	if (i < cMsrRanges)
589	memmove(&paMsrRanges[i + 1], &paMsrRanges[i], (cMsrRanges - i) * sizeof(paMsrRanges[0]));
590	paMsrRanges[i] = *pNewRange;
591	*pcMsrRanges += 1;
592	}
593	}
594
595	return VINF_SUCCESS;
596	}
597
598
599	/**
600	* Reconciles CPUID info with MSRs (selected ones).
601	*
602	* @returns VBox status code.
603	* @param pVM The cross context VM structure.
604	*/
605	int cpumR3MsrReconcileWithCpuId(PVM pVM)
606	{
607	PCCPUMMSRRANGE papToAdd[10];
608	uint32_t cToAdd = 0;
609
610	/*
611	* The IA32_FLUSH_CMD MSR was introduced in MCUs for CVS-2018-3646 and associates.
612	*/
613	if (pVM->cpum.s.GuestFeatures.fFlushCmd && !cpumLookupMsrRange(pVM, MSR_IA32_FLUSH_CMD))
614	{
615	static CPUMMSRRANGE const s_FlushCmd =
616	{
617	/.uFirst =/ MSR_IA32_FLUSH_CMD,
618	/.uLast =/ MSR_IA32_FLUSH_CMD,
619	/.enmRdFn =/ kCpumMsrRdFn_WriteOnly,
620	/.enmWrFn =/ kCpumMsrWrFn_Ia32FlushCmd,
621	/.offCpumCpu =/ UINT16_MAX,
622	/.fReserved =/ 0,
623	/.uValue =/ 0,
624	/.fWrIgnMask =/ 0,
625	/.fWrGpMask =/ ~MSR_IA32_FLUSH_CMD_F_L1D,
626	/.szName = / "IA32_FLUSH_CMD"
627	};
628	papToAdd[cToAdd++] = &s_FlushCmd;
629	}
630
631	/*
632	* The MSR_IA32_ARCH_CAPABILITIES was introduced in various spectre MCUs, or at least
633	* documented in relation to such.
634	*/
635	if (pVM->cpum.s.GuestFeatures.fArchCap && !cpumLookupMsrRange(pVM, MSR_IA32_ARCH_CAPABILITIES))
636	{
637	static CPUMMSRRANGE const s_ArchCaps =
638	{
639	/.uFirst =/ MSR_IA32_ARCH_CAPABILITIES,
640	/.uLast =/ MSR_IA32_ARCH_CAPABILITIES,
641	/.enmRdFn =/ kCpumMsrRdFn_Ia32ArchCapabilities,
642	/.enmWrFn =/ kCpumMsrWrFn_ReadOnly,
643	/.offCpumCpu =/ UINT16_MAX,
644	/.fReserved =/ 0,
645	/.uValue =/ 0,
646	/.fWrIgnMask =/ 0,
647	/.fWrGpMask =/ UINT64_MAX,
648	/.szName = / "IA32_ARCH_CAPABILITIES"
649	};
650	papToAdd[cToAdd++] = &s_ArchCaps;
651	}
652
653	/*
654	* Do the adding.
655	*/
656	for (uint32_t i = 0; i < cToAdd; i++)
657	{
658	PCCPUMMSRRANGE pRange = papToAdd[i];
659	LogRel(("CPUM: MSR/CPUID reconciliation insert: %#010x %s\n", pRange->uFirst, pRange->szName));
660	int rc = cpumR3MsrRangesInsert(NULL /* pVM */, &pVM->cpum.s.GuestInfo.paMsrRangesR3, &pVM->cpum.s.GuestInfo.cMsrRanges,
661	pRange);
662	if (RT_FAILURE(rc))
663	return rc;
664	}
665	return VINF_SUCCESS;
666	}
667
668
669	/**
670	* Worker for cpumR3MsrApplyFudge that applies one table.
671	*
672	* @returns VBox status code.
673	* @param pVM The cross context VM structure.
674	* @param paRanges Array of MSRs to fudge.
675	* @param cRanges Number of MSRs in the array.
676	*/
677	static int cpumR3MsrApplyFudgeTable(PVM pVM, PCCPUMMSRRANGE paRanges, size_t cRanges)
678	{
679	for (uint32_t i = 0; i < cRanges; i++)
680	if (!cpumLookupMsrRange(pVM, paRanges[i].uFirst))
681	{
682	LogRel(("CPUM: MSR fudge: %#010x %s\n", paRanges[i].uFirst, paRanges[i].szName));
683	int rc = cpumR3MsrRangesInsert(NULL /* pVM */, &pVM->cpum.s.GuestInfo.paMsrRangesR3, &pVM->cpum.s.GuestInfo.cMsrRanges,
684	&paRanges[i]);
685	if (RT_FAILURE(rc))
686	return rc;
687	}
688	return VINF_SUCCESS;
689	}
690
691
692	/**
693	* Fudges the MSRs that guest are known to access in some odd cases.
694	*
695	* A typical example is a VM that has been moved between different hosts where
696	* for instance the cpu vendor differs.
697	*
698	* Another example is older CPU profiles (e.g. Atom Bonnet) for newer CPUs (e.g.
699	* Atom Silvermont), where features reported thru CPUID aren't present in the
700	* MSRs (e.g. AMD64_TSC_AUX).
701	*
702	*
703	* @returns VBox status code.
704	* @param pVM The cross context VM structure.
705	*/
706	int cpumR3MsrApplyFudge(PVM pVM)
707	{
708	/*
709	* Basic.
710	*/
711	static CPUMMSRRANGE const s_aFudgeMsrs[] =
712	{
713	MFO(0x00000000, "IA32_P5_MC_ADDR", Ia32P5McAddr),
714	MFX(0x00000001, "IA32_P5_MC_TYPE", Ia32P5McType, Ia32P5McType, 0, 0, UINT64_MAX),
715	MVO(0x00000017, "IA32_PLATFORM_ID", 0),
716	MFN(0x0000001b, "IA32_APIC_BASE", Ia32ApicBase, Ia32ApicBase),
717	MVI(0x0000008b, "BIOS_SIGN", 0),
718	MFX(0x000000fe, "IA32_MTRRCAP", Ia32MtrrCap, ReadOnly, 0x508, 0, 0),
719	MFX(0x00000179, "IA32_MCG_CAP", Ia32McgCap, ReadOnly, 0x005, 0, 0),
720	MFX(0x0000017a, "IA32_MCG_STATUS", Ia32McgStatus, Ia32McgStatus, 0, ~(uint64_t)UINT32_MAX, 0),
721	MFN(0x000001a0, "IA32_MISC_ENABLE", Ia32MiscEnable, Ia32MiscEnable),
722	MFN(0x000001d9, "IA32_DEBUGCTL", Ia32DebugCtl, Ia32DebugCtl),
723	MFO(0x000001db, "P6_LAST_BRANCH_FROM_IP", P6LastBranchFromIp),
724	MFO(0x000001dc, "P6_LAST_BRANCH_TO_IP", P6LastBranchToIp),
725	MFO(0x000001dd, "P6_LAST_INT_FROM_IP", P6LastIntFromIp),
726	MFO(0x000001de, "P6_LAST_INT_TO_IP", P6LastIntToIp),
727	MFS(0x00000277, "IA32_PAT", Ia32Pat, Ia32Pat, Guest.msrPAT),
728	MFZ(0x000002ff, "IA32_MTRR_DEF_TYPE", Ia32MtrrDefType, Ia32MtrrDefType, GuestMsrs.msr.MtrrDefType, 0, ~(uint64_t)0xc07),
729	MFN(0x00000400, "IA32_MCi_CTL_STATUS_ADDR_MISC", Ia32McCtlStatusAddrMiscN, Ia32McCtlStatusAddrMiscN),
730	};
731	int rc = cpumR3MsrApplyFudgeTable(pVM, &s_aFudgeMsrs[0], RT_ELEMENTS(s_aFudgeMsrs));
732	AssertLogRelRCReturn(rc, rc);
733
734	/*
735	* XP might mistake opterons and other newer CPUs for P4s.
736	*/
737	if (pVM->cpum.s.GuestFeatures.uFamily >= 0xf)
738	{
739	static CPUMMSRRANGE const s_aP4FudgeMsrs[] =
740	{
741	MFX(0x0000002c, "P4_EBC_FREQUENCY_ID", IntelP4EbcFrequencyId, IntelP4EbcFrequencyId, 0xf12010f, UINT64_MAX, 0),
742	};
743	rc = cpumR3MsrApplyFudgeTable(pVM, &s_aP4FudgeMsrs[0], RT_ELEMENTS(s_aP4FudgeMsrs));
744	AssertLogRelRCReturn(rc, rc);
745	}
746
747	if (pVM->cpum.s.GuestFeatures.fRdTscP)
748	{
749	static CPUMMSRRANGE const s_aRdTscPFudgeMsrs[] =
750	{
751	MFX(0xc0000103, "AMD64_TSC_AUX", Amd64TscAux, Amd64TscAux, 0, 0, ~(uint64_t)UINT32_MAX),
752	};
753	rc = cpumR3MsrApplyFudgeTable(pVM, &s_aRdTscPFudgeMsrs[0], RT_ELEMENTS(s_aRdTscPFudgeMsrs));
754	AssertLogRelRCReturn(rc, rc);
755	}
756
757	/*
758	* Windows 10 incorrectly writes to MSR_IA32_TSX_CTRL without checking
759	* CPUID.ARCH_CAP(EAX=7h,ECX=0):EDX[bit 29] or the MSR feature bits in
760	* MSR_IA32_ARCH_CAPABILITIES[bit 7], see @bugref{9630}.
761	* Ignore writes to this MSR and return 0 on reads.
762	*/
763	if (pVM->cpum.s.GuestFeatures.fArchCap)
764	{
765	static CPUMMSRRANGE const s_aTsxCtrl[] =
766	{
767	MVI(MSR_IA32_TSX_CTRL, "IA32_TSX_CTRL", 0),
768	};
769	rc = cpumR3MsrApplyFudgeTable(pVM, &s_aTsxCtrl[0], RT_ELEMENTS(s_aTsxCtrl));
770	AssertLogRelRCReturn(rc, rc);
771	}
772
773	return rc;
774	}
775
776
777	/**
778	* Do we consider @a enmConsider a better match for @a enmTarget than
779	* @a enmFound?
780	*
781	* Only called when @a enmConsider isn't exactly what we're looking for.
782	*
783	* @returns true/false.
784	* @param enmConsider The new microarch to consider.
785	* @param enmTarget The target microarch.
786	* @param enmFound The best microarch match we've found thus far.
787	*/
788	DECLINLINE(bool) cpumR3DbIsBetterMarchMatch(CPUMMICROARCH enmConsider, CPUMMICROARCH enmTarget, CPUMMICROARCH enmFound)
789	{
790	Assert(enmConsider != enmTarget);
791
792	/*
793	* If we've got an march match, don't bother with enmConsider.
794	*/
795	if (enmFound == enmTarget)
796	return false;
797
798	/*
799	* Found is below: Pick 'consider' if it's closer to the target or above it.
800	*/
801	if (enmFound < enmTarget)
802	return enmConsider > enmFound;
803
804	/*
805	* Found is above: Pick 'consider' if it's also above (paranoia: or equal)
806	* and but closer to the target.
807	*/
808	return enmConsider >= enmTarget && enmConsider < enmFound;
809	}
810
811
812	/**
813	* Do we consider @a enmConsider a better match for @a enmTarget than
814	* @a enmFound?
815	*
816	* Only called for intel family 06h CPUs.
817	*
818	* @returns true/false.
819	* @param enmConsider The new microarch to consider.
820	* @param enmTarget The target microarch.
821	* @param enmFound The best microarch match we've found thus far.
822	*/
823	static bool cpumR3DbIsBetterIntelFam06Match(CPUMMICROARCH enmConsider, CPUMMICROARCH enmTarget, CPUMMICROARCH enmFound)
824	{
825	/* Check intel family 06h claims. */
826	AssertReturn(enmConsider >= kCpumMicroarch_Intel_P6_Core_Atom_First && enmConsider <= kCpumMicroarch_Intel_P6_Core_Atom_End,
827	false);
828	AssertReturn(enmTarget >= kCpumMicroarch_Intel_P6_Core_Atom_First && enmTarget <= kCpumMicroarch_Intel_P6_Core_Atom_End,
829	false);
830
831	/* Put matches out of the way. */
832	if (enmConsider == enmTarget)
833	return true;
834	if (enmFound == enmTarget)
835	return false;
836
837	/* If found isn't a family 06h march, whatever we're considering must be a better choice. */
838	if ( enmFound < kCpumMicroarch_Intel_P6_Core_Atom_First
839	\|\| enmFound > kCpumMicroarch_Intel_P6_Core_Atom_End)
840	return true;
841
842	/*
843	* The family 06h stuff is split into three categories:
844	* - Common P6 heritage
845	* - Core
846	* - Atom
847	*
848	* Determin which of the three arguments are Atom marchs, because that's
849	* all we need to make the right choice.
850	*/
851	bool const fConsiderAtom = enmConsider >= kCpumMicroarch_Intel_Atom_First;
852	bool const fTargetAtom = enmTarget >= kCpumMicroarch_Intel_Atom_First;
853	bool const fFoundAtom = enmFound >= kCpumMicroarch_Intel_Atom_First;
854
855	/*
856	* Want atom:
857	*/
858	if (fTargetAtom)
859	{
860	/* Pick the atom if we've got one of each.*/
861	if (fConsiderAtom != fFoundAtom)
862	return fConsiderAtom;
863	/* If we haven't got any atoms under consideration, pick a P6 or the earlier core.
864	Note! Not entirely sure Dothan is the best choice, but it'll do for now. */
865	if (!fConsiderAtom)
866	{
867	if (enmConsider > enmFound)
868	return enmConsider <= kCpumMicroarch_Intel_P6_M_Dothan;
869	return enmFound > kCpumMicroarch_Intel_P6_M_Dothan;
870	}
871	/* else: same category, default comparison rules. */
872	Assert(fConsiderAtom && fFoundAtom);
873	}
874	/*
875	* Want non-atom:
876	*/
877	/* Pick the non-atom if we've got one of each. */
878	else if (fConsiderAtom != fFoundAtom)
879	return fFoundAtom;
880	/* If we've only got atoms under consideration, pick the older one just to pick something. */
881	else if (fConsiderAtom)
882	return enmConsider < enmFound;
883	else
884	Assert(!fConsiderAtom && !fFoundAtom);
885
886	/*
887	* Same basic category. Do same compare as caller.
888	*/
889	return cpumR3DbIsBetterMarchMatch(enmConsider, enmTarget, enmFound);
890	}
891
892
893	int cpumR3DbGetCpuInfo(const char *pszName, PCPUMINFO pInfo)
894	{
895	CPUMDBENTRY const *pEntry = NULL;
896	int rc;
897
898	if (!strcmp(pszName, "host"))
899	#if defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_X86)
900	{
901	/*
902	* Create a CPU database entry for the host CPU. This means getting
903	* the CPUID bits from the real CPU and grabbing the closest matching
904	* database entry for MSRs.
905	*/
906	rc = CPUMR3CpuIdDetectUnknownLeafMethod(&pInfo->enmUnknownCpuIdMethod, &pInfo->DefCpuId);
907	if (RT_FAILURE(rc))
908	return rc;
909	rc = CPUMR3CpuIdCollectLeaves(&pInfo->paCpuIdLeavesR3, &pInfo->cCpuIdLeaves);
910	if (RT_FAILURE(rc))
911	return rc;
912	pInfo->fMxCsrMask = CPUMR3DeterminHostMxCsrMask();
913
914	/* Lookup database entry for MSRs. */
915	CPUMCPUVENDOR const enmVendor = CPUMR3CpuIdDetectVendorEx(pInfo->paCpuIdLeavesR3[0].uEax,
916	pInfo->paCpuIdLeavesR3[0].uEbx,
917	pInfo->paCpuIdLeavesR3[0].uEcx,
918	pInfo->paCpuIdLeavesR3[0].uEdx);
919	uint32_t const uStd1Eax = pInfo->paCpuIdLeavesR3[1].uEax;
920	uint8_t const uFamily = ASMGetCpuFamily(uStd1Eax);
921	uint8_t const uModel = ASMGetCpuModel(uStd1Eax, enmVendor == CPUMCPUVENDOR_INTEL);
922	uint8_t const uStepping = ASMGetCpuStepping(uStd1Eax);
923	CPUMMICROARCH const enmMicroarch = CPUMR3CpuIdDetermineMicroarchEx(enmVendor, uFamily, uModel, uStepping);
924
925	for (unsigned i = 0; i < RT_ELEMENTS(g_apCpumDbEntries); i++)
926	{
927	CPUMDBENTRY const *pCur = g_apCpumDbEntries[i];
928	if ((CPUMCPUVENDOR)pCur->enmVendor == enmVendor)
929	{
930	/* Match against Family, Microarch, model and stepping. Except
931	for family, always match the closer with preference given to
932	the later/older ones. */
933	if (pCur->uFamily == uFamily)
934	{
935	if (pCur->enmMicroarch == enmMicroarch)
936	{
937	if (pCur->uModel == uModel)
938	{
939	if (pCur->uStepping == uStepping)
940	{
941	/* Perfect match. */
942	pEntry = pCur;
943	break;
944	}
945
946	if ( !pEntry
947	\|\| pEntry->uModel != uModel
948	\|\| pEntry->enmMicroarch != enmMicroarch
949	\|\| pEntry->uFamily != uFamily)
950	pEntry = pCur;
951	else if ( pCur->uStepping >= uStepping
952	? pCur->uStepping < pEntry->uStepping \|\| pEntry->uStepping < uStepping
953	: pCur->uStepping > pEntry->uStepping)
954	pEntry = pCur;
955	}
956	else if ( !pEntry
957	\|\| pEntry->enmMicroarch != enmMicroarch
958	\|\| pEntry->uFamily != uFamily)
959	pEntry = pCur;
960	else if ( pCur->uModel >= uModel
961	? pCur->uModel < pEntry->uModel \|\| pEntry->uModel < uModel
962	: pCur->uModel > pEntry->uModel)
963	pEntry = pCur;
964	}
965	else if ( !pEntry
966	\|\| pEntry->uFamily != uFamily)
967	pEntry = pCur;
968	/* Special march matching rules applies to intel family 06h. */
969	else if ( enmVendor == CPUMCPUVENDOR_INTEL
970	&& uFamily == 6
971	? cpumR3DbIsBetterIntelFam06Match(pCur->enmMicroarch, enmMicroarch, pEntry->enmMicroarch)
972	: cpumR3DbIsBetterMarchMatch(pCur->enmMicroarch, enmMicroarch, pEntry->enmMicroarch))
973	pEntry = pCur;
974	}
975	/* We don't do closeness matching on family, we use the first
976	entry for the CPU vendor instead. (P4 workaround.) */
977	else if (!pEntry)
978	pEntry = pCur;
979	}
980	}
981
982	if (pEntry)
983	LogRel(("CPUM: Matched host CPU %s %#x/%#x/%#x %s with CPU DB entry '%s' (%s %#x/%#x/%#x %s)\n",
984	CPUMR3CpuVendorName(enmVendor), uFamily, uModel, uStepping, CPUMR3MicroarchName(enmMicroarch),
985	pEntry->pszName, CPUMR3CpuVendorName((CPUMCPUVENDOR)pEntry->enmVendor), pEntry->uFamily, pEntry->uModel,
986	pEntry->uStepping, CPUMR3MicroarchName(pEntry->enmMicroarch) ));
987	else
988	{
989	pEntry = g_apCpumDbEntries[0];
990	LogRel(("CPUM: No matching processor database entry %s %#x/%#x/%#x %s, falling back on '%s'\n",
991	CPUMR3CpuVendorName(enmVendor), uFamily, uModel, uStepping, CPUMR3MicroarchName(enmMicroarch),
992	pEntry->pszName));
993	}
994	}
995	else
996	#else
997	pszName = g_apCpumDbEntries[0]->pszName; /* Just pick the first entry for non-x86 hosts. */
998	#endif
999	{
1000	/*
1001	* We're supposed to be emulating a specific CPU that is included in
1002	* our CPU database. The CPUID tables needs to be copied onto the
1003	* heap so the caller can modify them and so they can be freed like
1004	* in the host case above.
1005	*/
1006	for (unsigned i = 0; i < RT_ELEMENTS(g_apCpumDbEntries); i++)
1007	if (!strcmp(pszName, g_apCpumDbEntries[i]->pszName))
1008	{
1009	pEntry = g_apCpumDbEntries[i];
1010	break;
1011	}
1012	if (!pEntry)
1013	{
1014	LogRel(("CPUM: Cannot locate any CPU by the name '%s'\n", pszName));
1015	return VERR_CPUM_DB_CPU_NOT_FOUND;
1016	}
1017
1018	pInfo->cCpuIdLeaves = pEntry->cCpuIdLeaves;
1019	if (pEntry->cCpuIdLeaves)
1020	{
1021	/* Must allocate a multiple of 16 here, matching cpumR3CpuIdEnsureSpace. */
1022	size_t cbExtra = sizeof(pEntry->paCpuIdLeaves[0]) * (RT_ALIGN(pEntry->cCpuIdLeaves, 16) - pEntry->cCpuIdLeaves);
1023	pInfo->paCpuIdLeavesR3 = (PCPUMCPUIDLEAF)RTMemDupEx(pEntry->paCpuIdLeaves,
1024	sizeof(pEntry->paCpuIdLeaves[0]) * pEntry->cCpuIdLeaves,
1025	cbExtra);
1026	if (!pInfo->paCpuIdLeavesR3)
1027	return VERR_NO_MEMORY;
1028	}
1029	else
1030	pInfo->paCpuIdLeavesR3 = NULL;
1031
1032	pInfo->enmUnknownCpuIdMethod = pEntry->enmUnknownCpuId;
1033	pInfo->DefCpuId = pEntry->DefUnknownCpuId;
1034	pInfo->fMxCsrMask = pEntry->fMxCsrMask;
1035
1036	LogRel(("CPUM: Using CPU DB entry '%s' (%s %#x/%#x/%#x %s)\n",
1037	pEntry->pszName, CPUMR3CpuVendorName((CPUMCPUVENDOR)pEntry->enmVendor),
1038	pEntry->uFamily, pEntry->uModel, pEntry->uStepping, CPUMR3MicroarchName(pEntry->enmMicroarch) ));
1039	}
1040
1041	pInfo->fMsrMask = pEntry->fMsrMask;
1042	pInfo->iFirstExtCpuIdLeaf = 0; /* Set by caller. */
1043	pInfo->uScalableBusFreq = pEntry->uScalableBusFreq;
1044	pInfo->paCpuIdLeavesR0 = NIL_RTR0PTR;
1045	pInfo->paMsrRangesR0 = NIL_RTR0PTR;
1046
1047	/*
1048	* Copy the MSR range.
1049	*/
1050	uint32_t cMsrs = 0;
1051	PCPUMMSRRANGE paMsrs = NULL;
1052
1053	PCCPUMMSRRANGE pCurMsr = pEntry->paMsrRanges;
1054	uint32_t cLeft = pEntry->cMsrRanges;
1055	while (cLeft-- > 0)
1056	{
1057	rc = cpumR3MsrRangesInsert(NULL /* pVM */, &paMsrs, &cMsrs, pCurMsr);
1058	if (RT_FAILURE(rc))
1059	{
1060	Assert(!paMsrs); /* The above function frees this. */
1061	RTMemFree(pInfo->paCpuIdLeavesR3);
1062	pInfo->paCpuIdLeavesR3 = NULL;
1063	return rc;
1064	}
1065	pCurMsr++;
1066	}
1067
1068	pInfo->paMsrRangesR3 = paMsrs;
1069	pInfo->cMsrRanges = cMsrs;
1070	return VINF_SUCCESS;
1071	}
1072
1073
1074	/**
1075	* Insert an MSR range into the VM.
1076	*
1077	* If the new MSR range overlaps existing ranges, the existing ones will be
1078	* adjusted/removed to fit in the new one.
1079	*
1080	* @returns VBox status code.
1081	* @param pVM The cross context VM structure.
1082	* @param pNewRange Pointer to the MSR range being inserted.
1083	*/
1084	VMMR3DECL(int) CPUMR3MsrRangesInsert(PVM pVM, PCCPUMMSRRANGE pNewRange)
1085	{
1086	AssertReturn(pVM, VERR_INVALID_PARAMETER);
1087	AssertReturn(pNewRange, VERR_INVALID_PARAMETER);
1088
1089	return cpumR3MsrRangesInsert(pVM, NULL /* ppaMsrRanges /, NULL / pcMsrRanges */, pNewRange);
1090	}
1091
1092
1093	/**
1094	* Register statistics for the MSRs.
1095	*
1096	* This must not be called before the MSRs have been finalized and moved to the
1097	* hyper heap.
1098	*
1099	* @returns VBox status code.
1100	* @param pVM The cross context VM structure.
1101	*/
1102	int cpumR3MsrRegStats(PVM pVM)
1103	{
1104	/*
1105	* Global statistics.
1106	*/
1107	PCPUM pCpum = &pVM->cpum.s;
1108	STAM_REL_REG(pVM, &pCpum->cMsrReads, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/Reads",
1109	STAMUNIT_OCCURENCES, "All RDMSRs making it to CPUM.");
1110	STAM_REL_REG(pVM, &pCpum->cMsrReadsRaiseGp, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/ReadsRaisingGP",
1111	STAMUNIT_OCCURENCES, "RDMSR raising #GPs, except unknown MSRs.");
1112	STAM_REL_REG(pVM, &pCpum->cMsrReadsUnknown, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/ReadsUnknown",
1113	STAMUNIT_OCCURENCES, "RDMSR on unknown MSRs (raises #GP).");
1114	STAM_REL_REG(pVM, &pCpum->cMsrWrites, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/Writes",
1115	STAMUNIT_OCCURENCES, "All WRMSRs making it to CPUM.");
1116	STAM_REL_REG(pVM, &pCpum->cMsrWritesRaiseGp, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/WritesRaisingGP",
1117	STAMUNIT_OCCURENCES, "WRMSR raising #GPs, except unknown MSRs.");
1118	STAM_REL_REG(pVM, &pCpum->cMsrWritesToIgnoredBits, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/WritesToIgnoredBits",
1119	STAMUNIT_OCCURENCES, "Writing of ignored bits.");
1120	STAM_REL_REG(pVM, &pCpum->cMsrWritesUnknown, STAMTYPE_COUNTER, "/CPUM/MSR-Totals/WritesUnknown",
1121	STAMUNIT_OCCURENCES, "WRMSR on unknown MSRs (raises #GP).");
1122
1123
1124	# ifdef VBOX_WITH_STATISTICS
1125	/*
1126	* Per range.
1127	*/
1128	PCPUMMSRRANGE paRanges = pVM->cpum.s.GuestInfo.paMsrRangesR3;
1129	uint32_t cRanges = pVM->cpum.s.GuestInfo.cMsrRanges;
1130	for (uint32_t i = 0; i < cRanges; i++)
1131	{
1132	char szName[160];
1133	ssize_t cchName;
1134
1135	if (paRanges[i].uFirst == paRanges[i].uLast)
1136	cchName = RTStrPrintf(szName, sizeof(szName), "/CPUM/MSRs/%#010x-%s",
1137	paRanges[i].uFirst, paRanges[i].szName);
1138	else
1139	cchName = RTStrPrintf(szName, sizeof(szName), "/CPUM/MSRs/%#010x-%#010x-%s",
1140	paRanges[i].uFirst, paRanges[i].uLast, paRanges[i].szName);
1141
1142	RTStrCopy(&szName[cchName], sizeof(szName) - cchName, "-reads");
1143	STAMR3Register(pVM, &paRanges[i].cReads, STAMTYPE_COUNTER, STAMVISIBILITY_ALWAYS, szName, STAMUNIT_OCCURENCES, "RDMSR");
1144
1145	RTStrCopy(&szName[cchName], sizeof(szName) - cchName, "-writes");
1146	STAMR3Register(pVM, &paRanges[i].cWrites, STAMTYPE_COUNTER, STAMVISIBILITY_USED, szName, STAMUNIT_OCCURENCES, "WRMSR");
1147
1148	RTStrCopy(&szName[cchName], sizeof(szName) - cchName, "-GPs");
1149	STAMR3Register(pVM, &paRanges[i].cGps, STAMTYPE_COUNTER, STAMVISIBILITY_USED, szName, STAMUNIT_OCCURENCES, "#GPs");
1150
1151	RTStrCopy(&szName[cchName], sizeof(szName) - cchName, "-ign-bits-writes");
1152	STAMR3Register(pVM, &paRanges[i].cIgnoredBits, STAMTYPE_COUNTER, STAMVISIBILITY_USED, szName, STAMUNIT_OCCURENCES, "WRMSR w/ ignored bits");
1153	}
1154	# endif /* VBOX_WITH_STATISTICS */
1155
1156	return VINF_SUCCESS;
1157	}
1158
1159	#endif /* !CPUM_DB_STANDALONE */
1160

Note: See TracBrowser for help on using the repository browser.

source: vbox/trunk/src/VBox/VMM/VMMR3/CPUMR3Db.cpp@ 88654

Download in other formats: