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s390x: make kvm exported functions conditional on kvm
[qemu.git] / target-i386 / cpuid.c
blobe479a4dbd7b3c2792903783542136a50da8acb9e
1 /*
2 * i386 CPUID helper functions
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 */
19 #include <stdlib.h>
20 #include <stdio.h>
21 #include <string.h>
22 #include <inttypes.h>
23
24 #include "cpu.h"
25 #include "kvm.h"
26
27 #include "qemu-option.h"
28 #include "qemu-config.h"
29
30 /* feature flags taken from "Intel Processor Identification and the CPUID
31 * Instruction" and AMD's "CPUID Specification". In cases of disagreement
32 * between feature naming conventions, aliases may be added.
33 */
34 static const char *feature_name[] = {
35 "fpu", "vme", "de", "pse",
36 "tsc", "msr", "pae", "mce",
37 "cx8", "apic", NULL, "sep",
38 "mtrr", "pge", "mca", "cmov",
39 "pat", "pse36", "pn" /* Intel psn */, "clflush" /* Intel clfsh */,
40 NULL, "ds" /* Intel dts */, "acpi", "mmx",
41 "fxsr", "sse", "sse2", "ss",
42 "ht" /* Intel htt */, "tm", "ia64", "pbe",
43 };
44 static const char *ext_feature_name[] = {
45 "pni|sse3" /* Intel,AMD sse3 */, "pclmuldq", "dtes64", "monitor",
46 "ds_cpl", "vmx", "smx", "est",
47 "tm2", "ssse3", "cid", NULL,
48 "fma", "cx16", "xtpr", "pdcm",
49 NULL, NULL, "dca", "sse4.1|sse4_1",
50 "sse4.2|sse4_2", "x2apic", "movbe", "popcnt",
51 NULL, "aes", "xsave", "osxsave",
52 "avx", NULL, NULL, "hypervisor",
53 };
54 static const char *ext2_feature_name[] = {
55 "fpu", "vme", "de", "pse",
56 "tsc", "msr", "pae", "mce",
57 "cx8" /* AMD CMPXCHG8B */, "apic", NULL, "syscall",
58 "mtrr", "pge", "mca", "cmov",
59 "pat", "pse36", NULL, NULL /* Linux mp */,
60 "nx" /* Intel xd */, NULL, "mmxext", "mmx",
61 "fxsr", "fxsr_opt" /* AMD ffxsr */, "pdpe1gb" /* AMD Page1GB */, "rdtscp",
62 NULL, "lm" /* Intel 64 */, "3dnowext", "3dnow",
63 };
64 static const char *ext3_feature_name[] = {
65 "lahf_lm" /* AMD LahfSahf */, "cmp_legacy", "svm", "extapic" /* AMD ExtApicSpace */,
66 "cr8legacy" /* AMD AltMovCr8 */, "abm", "sse4a", "misalignsse",
67 "3dnowprefetch", "osvw", "ibs", "xop",
68 "skinit", "wdt", NULL, NULL,
69 "fma4", NULL, "cvt16", "nodeid_msr",
70 NULL, NULL, NULL, NULL,
71 NULL, NULL, NULL, NULL,
72 NULL, NULL, NULL, NULL,
73 };
74
75 static const char *kvm_feature_name[] = {
76 "kvmclock", "kvm_nopiodelay", "kvm_mmu", "kvmclock", "kvm_asyncpf", NULL, NULL, NULL,
77 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
78 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
79 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
80 };
81
82 static const char *svm_feature_name[] = {
83 "npt", "lbrv", "svm_lock", "nrip_save",
84 "tsc_scale", "vmcb_clean", "flushbyasid", "decodeassists",
85 NULL, NULL, "pause_filter", NULL,
86 "pfthreshold", NULL, NULL, NULL,
87 NULL, NULL, NULL, NULL,
88 NULL, NULL, NULL, NULL,
89 NULL, NULL, NULL, NULL,
90 NULL, NULL, NULL, NULL,
91 };
92
93 /* collects per-function cpuid data
94 */
95 typedef struct model_features_t {
96 uint32_t *guest_feat;
97 uint32_t *host_feat;
98 uint32_t check_feat;
99 const char **flag_names;
100 uint32_t cpuid;
101 } model_features_t;
102
103 int check_cpuid = 0;
104 int enforce_cpuid = 0;
105
106 void host_cpuid(uint32_t function, uint32_t count,
107 uint32_t *eax, uint32_t *ebx, uint32_t *ecx, uint32_t *edx)
108 {
109 #if defined(CONFIG_KVM)
110 uint32_t vec[4];
111
112 #ifdef __x86_64__
113 asm volatile("cpuid"
114 : "=a"(vec[0]), "=b"(vec[1]),
115 "=c"(vec[2]), "=d"(vec[3])
116 : "0"(function), "c"(count) : "cc");
117 #else
118 asm volatile("pusha \n\t"
119 "cpuid \n\t"
120 "mov %%eax, 0(%2) \n\t"
121 "mov %%ebx, 4(%2) \n\t"
122 "mov %%ecx, 8(%2) \n\t"
123 "mov %%edx, 12(%2) \n\t"
124 "popa"
125 : : "a"(function), "c"(count), "S"(vec)
126 : "memory", "cc");
127 #endif
128
129 if (eax)
130 *eax = vec[0];
131 if (ebx)
132 *ebx = vec[1];
133 if (ecx)
134 *ecx = vec[2];
135 if (edx)
136 *edx = vec[3];
137 #endif
138 }
139
140 #define iswhite(c) ((c) && ((c) <= ' ' || '~' < (c)))
141
142 /* general substring compare of *[s1..e1) and *[s2..e2). sx is start of
143 * a substring. ex if !NULL points to the first char after a substring,
144 * otherwise the string is assumed to sized by a terminating nul.
145 * Return lexical ordering of *s1:*s2.
146 */
147 static int sstrcmp(const char *s1, const char *e1, const char *s2,
148 const char *e2)
149 {
150 for (;;) {
151 if (!*s1 || !*s2 || *s1 != *s2)
152 return (*s1 - *s2);
153 ++s1, ++s2;
154 if (s1 == e1 && s2 == e2)
155 return (0);
156 else if (s1 == e1)
157 return (*s2);
158 else if (s2 == e2)
159 return (*s1);
160 }
161 }
162
163 /* compare *[s..e) to *altstr. *altstr may be a simple string or multiple
164 * '|' delimited (possibly empty) strings in which case search for a match
165 * within the alternatives proceeds left to right. Return 0 for success,
166 * non-zero otherwise.
167 */
168 static int altcmp(const char *s, const char *e, const char *altstr)
169 {
170 const char *p, *q;
171
172 for (q = p = altstr; ; ) {
173 while (*p && *p != '|')
174 ++p;
175 if ((q == p && !*s) || (q != p && !sstrcmp(s, e, q, p)))
176 return (0);
177 if (!*p)
178 return (1);
179 else
180 q = ++p;
181 }
182 }
183
184 /* search featureset for flag *[s..e), if found set corresponding bit in
185 * *pval and return true, otherwise return false
186 */
187 static bool lookup_feature(uint32_t *pval, const char *s, const char *e,
188 const char **featureset)
189 {
190 uint32_t mask;
191 const char **ppc;
192 bool found = false;
193
194 for (mask = 1, ppc = featureset; mask; mask <<= 1, ++ppc) {
195 if (*ppc && !altcmp(s, e, *ppc)) {
196 *pval |= mask;
197 found = true;
198 }
199 }
200 return found;
201 }
202
203 static void add_flagname_to_bitmaps(const char *flagname, uint32_t *features,
204 uint32_t *ext_features,
205 uint32_t *ext2_features,
206 uint32_t *ext3_features,
207 uint32_t *kvm_features,
208 uint32_t *svm_features)
209 {
210 if (!lookup_feature(features, flagname, NULL, feature_name) &&
211 !lookup_feature(ext_features, flagname, NULL, ext_feature_name) &&
212 !lookup_feature(ext2_features, flagname, NULL, ext2_feature_name) &&
213 !lookup_feature(ext3_features, flagname, NULL, ext3_feature_name) &&
214 !lookup_feature(kvm_features, flagname, NULL, kvm_feature_name) &&
215 !lookup_feature(svm_features, flagname, NULL, svm_feature_name))
216 fprintf(stderr, "CPU feature %s not found\n", flagname);
217 }
218
219 typedef struct x86_def_t {
220 struct x86_def_t *next;
221 const char *name;
222 uint32_t level;
223 uint32_t vendor1, vendor2, vendor3;
224 int family;
225 int model;
226 int stepping;
227 uint32_t features, ext_features, ext2_features, ext3_features;
228 uint32_t kvm_features, svm_features;
229 uint32_t xlevel;
230 char model_id[48];
231 int vendor_override;
232 uint32_t flags;
233 } x86_def_t;
234
235 #define I486_FEATURES (CPUID_FP87 | CPUID_VME | CPUID_PSE)
236 #define PENTIUM_FEATURES (I486_FEATURES | CPUID_DE | CPUID_TSC | \
237 CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_MMX | CPUID_APIC)
238 #define PENTIUM2_FEATURES (PENTIUM_FEATURES | CPUID_PAE | CPUID_SEP | \
239 CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \
240 CPUID_PSE36 | CPUID_FXSR)
241 #define PENTIUM3_FEATURES (PENTIUM2_FEATURES | CPUID_SSE)
242 #define PPRO_FEATURES (CPUID_FP87 | CPUID_DE | CPUID_PSE | CPUID_TSC | \
243 CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_PGE | CPUID_CMOV | \
244 CPUID_PAT | CPUID_FXSR | CPUID_MMX | CPUID_SSE | CPUID_SSE2 | \
245 CPUID_PAE | CPUID_SEP | CPUID_APIC)
246 #define EXT2_FEATURE_MASK 0x0183F3FF
247
248 #define TCG_FEATURES (CPUID_FP87 | CPUID_PSE | CPUID_TSC | CPUID_MSR | \
249 CPUID_PAE | CPUID_MCE | CPUID_CX8 | CPUID_APIC | CPUID_SEP | \
250 CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \
251 CPUID_PSE36 | CPUID_CLFLUSH | CPUID_ACPI | CPUID_MMX | \
252 CPUID_FXSR | CPUID_SSE | CPUID_SSE2 | CPUID_SS)
253 /* partly implemented:
254 CPUID_MTRR, CPUID_MCA, CPUID_CLFLUSH (needed for Win64)
255 CPUID_PSE36 (needed for Solaris) */
256 /* missing:
257 CPUID_VME, CPUID_DTS, CPUID_SS, CPUID_HT, CPUID_TM, CPUID_PBE */
258 #define TCG_EXT_FEATURES (CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | \
259 CPUID_EXT_CX16 | CPUID_EXT_POPCNT | \
260 CPUID_EXT_HYPERVISOR)
261 /* missing:
262 CPUID_EXT_DTES64, CPUID_EXT_DSCPL, CPUID_EXT_VMX, CPUID_EXT_EST,
263 CPUID_EXT_TM2, CPUID_EXT_XTPR, CPUID_EXT_PDCM, CPUID_EXT_XSAVE */
264 #define TCG_EXT2_FEATURES ((TCG_FEATURES & EXT2_FEATURE_MASK) | \
265 CPUID_EXT2_NX | CPUID_EXT2_MMXEXT | CPUID_EXT2_RDTSCP | \
266 CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT)
267 /* missing:
268 CPUID_EXT2_PDPE1GB */
269 #define TCG_EXT3_FEATURES (CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | \
270 CPUID_EXT3_CR8LEG | CPUID_EXT3_ABM | CPUID_EXT3_SSE4A)
271 #define TCG_SVM_FEATURES 0
272
273 /* maintains list of cpu model definitions
274 */
275 static x86_def_t *x86_defs = {NULL};
276
277 /* built-in cpu model definitions (deprecated)
278 */
279 static x86_def_t builtin_x86_defs[] = {
280 {
281 .name = "qemu64",
282 .level = 4,
283 .vendor1 = CPUID_VENDOR_AMD_1,
284 .vendor2 = CPUID_VENDOR_AMD_2,
285 .vendor3 = CPUID_VENDOR_AMD_3,
286 .family = 6,
287 .model = 2,
288 .stepping = 3,
289 .features = PPRO_FEATURES |
290 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
291 CPUID_PSE36,
292 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_CX16 | CPUID_EXT_POPCNT,
293 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) |
294 CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
295 .ext3_features = CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM |
296 CPUID_EXT3_ABM | CPUID_EXT3_SSE4A,
297 .xlevel = 0x8000000A,
298 .model_id = "QEMU Virtual CPU version " QEMU_VERSION,
299 },
300 {
301 .name = "phenom",
302 .level = 5,
303 .vendor1 = CPUID_VENDOR_AMD_1,
304 .vendor2 = CPUID_VENDOR_AMD_2,
305 .vendor3 = CPUID_VENDOR_AMD_3,
306 .family = 16,
307 .model = 2,
308 .stepping = 3,
309 .features = PPRO_FEATURES |
310 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
311 CPUID_PSE36 | CPUID_VME | CPUID_HT,
312 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_CX16 |
313 CPUID_EXT_POPCNT,
314 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) |
315 CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX |
316 CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT | CPUID_EXT2_MMXEXT |
317 CPUID_EXT2_FFXSR | CPUID_EXT2_PDPE1GB | CPUID_EXT2_RDTSCP,
318 /* Missing: CPUID_EXT3_CMP_LEG, CPUID_EXT3_EXTAPIC,
319 CPUID_EXT3_CR8LEG,
320 CPUID_EXT3_MISALIGNSSE, CPUID_EXT3_3DNOWPREFETCH,
321 CPUID_EXT3_OSVW, CPUID_EXT3_IBS */
322 .ext3_features = CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM |
323 CPUID_EXT3_ABM | CPUID_EXT3_SSE4A,
324 .svm_features = CPUID_SVM_NPT | CPUID_SVM_LBRV,
325 .xlevel = 0x8000001A,
326 .model_id = "AMD Phenom(tm) 9550 Quad-Core Processor"
327 },
328 {
329 .name = "core2duo",
330 .level = 10,
331 .family = 6,
332 .model = 15,
333 .stepping = 11,
334 .features = PPRO_FEATURES |
335 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
336 CPUID_PSE36 | CPUID_VME | CPUID_DTS | CPUID_ACPI | CPUID_SS |
337 CPUID_HT | CPUID_TM | CPUID_PBE,
338 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 |
339 CPUID_EXT_DTES64 | CPUID_EXT_DSCPL | CPUID_EXT_VMX | CPUID_EXT_EST |
340 CPUID_EXT_TM2 | CPUID_EXT_CX16 | CPUID_EXT_XTPR | CPUID_EXT_PDCM,
341 .ext2_features = CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
342 .ext3_features = CPUID_EXT3_LAHF_LM,
343 .xlevel = 0x80000008,
344 .model_id = "Intel(R) Core(TM)2 Duo CPU T7700 @ 2.40GHz",
345 },
346 {
347 .name = "kvm64",
348 .level = 5,
349 .vendor1 = CPUID_VENDOR_INTEL_1,
350 .vendor2 = CPUID_VENDOR_INTEL_2,
351 .vendor3 = CPUID_VENDOR_INTEL_3,
352 .family = 15,
353 .model = 6,
354 .stepping = 1,
355 /* Missing: CPUID_VME, CPUID_HT */
356 .features = PPRO_FEATURES |
357 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
358 CPUID_PSE36,
359 /* Missing: CPUID_EXT_POPCNT, CPUID_EXT_MONITOR */
360 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_CX16,
361 /* Missing: CPUID_EXT2_PDPE1GB, CPUID_EXT2_RDTSCP */
362 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) |
363 CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
364 /* Missing: CPUID_EXT3_LAHF_LM, CPUID_EXT3_CMP_LEG, CPUID_EXT3_EXTAPIC,
365 CPUID_EXT3_CR8LEG, CPUID_EXT3_ABM, CPUID_EXT3_SSE4A,
366 CPUID_EXT3_MISALIGNSSE, CPUID_EXT3_3DNOWPREFETCH,
367 CPUID_EXT3_OSVW, CPUID_EXT3_IBS, CPUID_EXT3_SVM */
368 .ext3_features = 0,
369 .xlevel = 0x80000008,
370 .model_id = "Common KVM processor"
371 },
372 {
373 .name = "qemu32",
374 .level = 4,
375 .family = 6,
376 .model = 3,
377 .stepping = 3,
378 .features = PPRO_FEATURES,
379 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_POPCNT,
380 .xlevel = 0x80000004,
381 .model_id = "QEMU Virtual CPU version " QEMU_VERSION,
382 },
383 {
384 .name = "kvm32",
385 .level = 5,
386 .family = 15,
387 .model = 6,
388 .stepping = 1,
389 .features = PPRO_FEATURES |
390 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_PSE36,
391 .ext_features = CPUID_EXT_SSE3,
392 .ext2_features = PPRO_FEATURES & EXT2_FEATURE_MASK,
393 .ext3_features = 0,
394 .xlevel = 0x80000008,
395 .model_id = "Common 32-bit KVM processor"
396 },
397 {
398 .name = "coreduo",
399 .level = 10,
400 .family = 6,
401 .model = 14,
402 .stepping = 8,
403 .features = PPRO_FEATURES | CPUID_VME |
404 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_DTS | CPUID_ACPI |
405 CPUID_SS | CPUID_HT | CPUID_TM | CPUID_PBE,
406 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_VMX |
407 CPUID_EXT_EST | CPUID_EXT_TM2 | CPUID_EXT_XTPR | CPUID_EXT_PDCM,
408 .ext2_features = CPUID_EXT2_NX,
409 .xlevel = 0x80000008,
410 .model_id = "Genuine Intel(R) CPU T2600 @ 2.16GHz",
411 },
412 {
413 .name = "486",
414 .level = 1,
415 .family = 4,
416 .model = 0,
417 .stepping = 0,
418 .features = I486_FEATURES,
419 .xlevel = 0,
420 },
421 {
422 .name = "pentium",
423 .level = 1,
424 .family = 5,
425 .model = 4,
426 .stepping = 3,
427 .features = PENTIUM_FEATURES,
428 .xlevel = 0,
429 },
430 {
431 .name = "pentium2",
432 .level = 2,
433 .family = 6,
434 .model = 5,
435 .stepping = 2,
436 .features = PENTIUM2_FEATURES,
437 .xlevel = 0,
438 },
439 {
440 .name = "pentium3",
441 .level = 2,
442 .family = 6,
443 .model = 7,
444 .stepping = 3,
445 .features = PENTIUM3_FEATURES,
446 .xlevel = 0,
447 },
448 {
449 .name = "athlon",
450 .level = 2,
451 .vendor1 = CPUID_VENDOR_AMD_1,
452 .vendor2 = CPUID_VENDOR_AMD_2,
453 .vendor3 = CPUID_VENDOR_AMD_3,
454 .family = 6,
455 .model = 2,
456 .stepping = 3,
457 .features = PPRO_FEATURES | CPUID_PSE36 | CPUID_VME | CPUID_MTRR | CPUID_MCA,
458 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | CPUID_EXT2_MMXEXT | CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT,
459 .xlevel = 0x80000008,
460 /* XXX: put another string ? */
461 .model_id = "QEMU Virtual CPU version " QEMU_VERSION,
462 },
463 {
464 .name = "n270",
465 /* original is on level 10 */
466 .level = 5,
467 .family = 6,
468 .model = 28,
469 .stepping = 2,
470 .features = PPRO_FEATURES |
471 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_VME | CPUID_DTS |
472 CPUID_ACPI | CPUID_SS | CPUID_HT | CPUID_TM | CPUID_PBE,
473 /* Some CPUs got no CPUID_SEP */
474 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 |
475 CPUID_EXT_DSCPL | CPUID_EXT_EST | CPUID_EXT_TM2 | CPUID_EXT_XTPR,
476 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | CPUID_EXT2_NX,
477 .ext3_features = CPUID_EXT3_LAHF_LM,
478 .xlevel = 0x8000000A,
479 .model_id = "Intel(R) Atom(TM) CPU N270 @ 1.60GHz",
480 },
481 };
482
483 static int cpu_x86_fill_model_id(char *str)
484 {
485 uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
486 int i;
487
488 for (i = 0; i < 3; i++) {
489 host_cpuid(0x80000002 + i, 0, &eax, &ebx, &ecx, &edx);
490 memcpy(str + i * 16 + 0, &eax, 4);
491 memcpy(str + i * 16 + 4, &ebx, 4);
492 memcpy(str + i * 16 + 8, &ecx, 4);
493 memcpy(str + i * 16 + 12, &edx, 4);
494 }
495 return 0;
496 }
497
498 static int cpu_x86_fill_host(x86_def_t *x86_cpu_def)
499 {
500 uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
501
502 x86_cpu_def->name = "host";
503 host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx);
504 x86_cpu_def->level = eax;
505 x86_cpu_def->vendor1 = ebx;
506 x86_cpu_def->vendor2 = edx;
507 x86_cpu_def->vendor3 = ecx;
508
509 host_cpuid(0x1, 0, &eax, &ebx, &ecx, &edx);
510 x86_cpu_def->family = ((eax >> 8) & 0x0F) + ((eax >> 20) & 0xFF);
511 x86_cpu_def->model = ((eax >> 4) & 0x0F) | ((eax & 0xF0000) >> 12);
512 x86_cpu_def->stepping = eax & 0x0F;
513 x86_cpu_def->ext_features = ecx;
514 x86_cpu_def->features = edx;
515
516 host_cpuid(0x80000000, 0, &eax, &ebx, &ecx, &edx);
517 x86_cpu_def->xlevel = eax;
518
519 host_cpuid(0x80000001, 0, &eax, &ebx, &ecx, &edx);
520 x86_cpu_def->ext2_features = edx;
521 x86_cpu_def->ext3_features = ecx;
522 cpu_x86_fill_model_id(x86_cpu_def->model_id);
523 x86_cpu_def->vendor_override = 0;
524
525
526 /*
527 * Every SVM feature requires emulation support in KVM - so we can't just
528 * read the host features here. KVM might even support SVM features not
529 * available on the host hardware. Just set all bits and mask out the
530 * unsupported ones later.
531 */
532 x86_cpu_def->svm_features = -1;
533
534 return 0;
535 }
536
537 static int unavailable_host_feature(struct model_features_t *f, uint32_t mask)
538 {
539 int i;
540
541 for (i = 0; i < 32; ++i)
542 if (1 << i & mask) {
543 fprintf(stderr, "warning: host cpuid %04x_%04x lacks requested"
544 " flag '%s' [0x%08x]\n",
545 f->cpuid >> 16, f->cpuid & 0xffff,
546 f->flag_names[i] ? f->flag_names[i] : "[reserved]", mask);
547 break;
548 }
549 return 0;
550 }
551
552 /* best effort attempt to inform user requested cpu flags aren't making
553 * their way to the guest. Note: ft[].check_feat ideally should be
554 * specified via a guest_def field to suppress report of extraneous flags.
555 */
556 static int check_features_against_host(x86_def_t *guest_def)
557 {
558 x86_def_t host_def;
559 uint32_t mask;
560 int rv, i;
561 struct model_features_t ft[] = {
562 {&guest_def->features, &host_def.features,
563 ~0, feature_name, 0x00000000},
564 {&guest_def->ext_features, &host_def.ext_features,
565 ~CPUID_EXT_HYPERVISOR, ext_feature_name, 0x00000001},
566 {&guest_def->ext2_features, &host_def.ext2_features,
567 ~PPRO_FEATURES, ext2_feature_name, 0x80000000},
568 {&guest_def->ext3_features, &host_def.ext3_features,
569 ~CPUID_EXT3_SVM, ext3_feature_name, 0x80000001}};
570
571 cpu_x86_fill_host(&host_def);
572 for (rv = 0, i = 0; i < ARRAY_SIZE(ft); ++i)
573 for (mask = 1; mask; mask <<= 1)
574 if (ft[i].check_feat & mask && *ft[i].guest_feat & mask &&
575 !(*ft[i].host_feat & mask)) {
576 unavailable_host_feature(&ft[i], mask);
577 rv = 1;
578 }
579 return rv;
580 }
581
582 static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *cpu_model)
583 {
584 unsigned int i;
585 x86_def_t *def;
586
587 char *s = strdup(cpu_model);
588 char *featurestr, *name = strtok(s, ",");
589 /* Features to be added*/
590 uint32_t plus_features = 0, plus_ext_features = 0;
591 uint32_t plus_ext2_features = 0, plus_ext3_features = 0;
592 uint32_t plus_kvm_features = 0, plus_svm_features = 0;
593 /* Features to be removed */
594 uint32_t minus_features = 0, minus_ext_features = 0;
595 uint32_t minus_ext2_features = 0, minus_ext3_features = 0;
596 uint32_t minus_kvm_features = 0, minus_svm_features = 0;
597 uint32_t numvalue;
598
599 for (def = x86_defs; def; def = def->next)
600 if (!strcmp(name, def->name))
601 break;
602 if (kvm_enabled() && strcmp(name, "host") == 0) {
603 cpu_x86_fill_host(x86_cpu_def);
604 } else if (!def) {
605 goto error;
606 } else {
607 memcpy(x86_cpu_def, def, sizeof(*def));
608 }
609
610 plus_kvm_features = ~0; /* not supported bits will be filtered out later */
611
612 add_flagname_to_bitmaps("hypervisor", &plus_features,
613 &plus_ext_features, &plus_ext2_features, &plus_ext3_features,
614 &plus_kvm_features, &plus_svm_features);
615
616 featurestr = strtok(NULL, ",");
617
618 while (featurestr) {
619 char *val;
620 if (featurestr[0] == '+') {
621 add_flagname_to_bitmaps(featurestr + 1, &plus_features,
622 &plus_ext_features, &plus_ext2_features,
623 &plus_ext3_features, &plus_kvm_features,
624 &plus_svm_features);
625 } else if (featurestr[0] == '-') {
626 add_flagname_to_bitmaps(featurestr + 1, &minus_features,
627 &minus_ext_features, &minus_ext2_features,
628 &minus_ext3_features, &minus_kvm_features,
629 &minus_svm_features);
630 } else if ((val = strchr(featurestr, '='))) {
631 *val = 0; val++;
632 if (!strcmp(featurestr, "family")) {
633 char *err;
634 numvalue = strtoul(val, &err, 0);
635 if (!*val || *err) {
636 fprintf(stderr, "bad numerical value %s\n", val);
637 goto error;
638 }
639 x86_cpu_def->family = numvalue;
640 } else if (!strcmp(featurestr, "model")) {
641 char *err;
642 numvalue = strtoul(val, &err, 0);
643 if (!*val || *err || numvalue > 0xff) {
644 fprintf(stderr, "bad numerical value %s\n", val);
645 goto error;
646 }
647 x86_cpu_def->model = numvalue;
648 } else if (!strcmp(featurestr, "stepping")) {
649 char *err;
650 numvalue = strtoul(val, &err, 0);
651 if (!*val || *err || numvalue > 0xf) {
652 fprintf(stderr, "bad numerical value %s\n", val);
653 goto error;
654 }
655 x86_cpu_def->stepping = numvalue ;
656 } else if (!strcmp(featurestr, "level")) {
657 char *err;
658 numvalue = strtoul(val, &err, 0);
659 if (!*val || *err) {
660 fprintf(stderr, "bad numerical value %s\n", val);
661 goto error;
662 }
663 x86_cpu_def->level = numvalue;
664 } else if (!strcmp(featurestr, "xlevel")) {
665 char *err;
666 numvalue = strtoul(val, &err, 0);
667 if (!*val || *err) {
668 fprintf(stderr, "bad numerical value %s\n", val);
669 goto error;
670 }
671 if (numvalue < 0x80000000) {
672 numvalue += 0x80000000;
673 }
674 x86_cpu_def->xlevel = numvalue;
675 } else if (!strcmp(featurestr, "vendor")) {
676 if (strlen(val) != 12) {
677 fprintf(stderr, "vendor string must be 12 chars long\n");
678 goto error;
679 }
680 x86_cpu_def->vendor1 = 0;
681 x86_cpu_def->vendor2 = 0;
682 x86_cpu_def->vendor3 = 0;
683 for(i = 0; i < 4; i++) {
684 x86_cpu_def->vendor1 |= ((uint8_t)val[i ]) << (8 * i);
685 x86_cpu_def->vendor2 |= ((uint8_t)val[i + 4]) << (8 * i);
686 x86_cpu_def->vendor3 |= ((uint8_t)val[i + 8]) << (8 * i);
687 }
688 x86_cpu_def->vendor_override = 1;
689 } else if (!strcmp(featurestr, "model_id")) {
690 pstrcpy(x86_cpu_def->model_id, sizeof(x86_cpu_def->model_id),
691 val);
692 } else {
693 fprintf(stderr, "unrecognized feature %s\n", featurestr);
694 goto error;
695 }
696 } else if (!strcmp(featurestr, "check")) {
697 check_cpuid = 1;
698 } else if (!strcmp(featurestr, "enforce")) {
699 check_cpuid = enforce_cpuid = 1;
700 } else {
701 fprintf(stderr, "feature string `%s' not in format (+feature|-feature|feature=xyz)\n", featurestr);
702 goto error;
703 }
704 featurestr = strtok(NULL, ",");
705 }
706 x86_cpu_def->features |= plus_features;
707 x86_cpu_def->ext_features |= plus_ext_features;
708 x86_cpu_def->ext2_features |= plus_ext2_features;
709 x86_cpu_def->ext3_features |= plus_ext3_features;
710 x86_cpu_def->kvm_features |= plus_kvm_features;
711 x86_cpu_def->svm_features |= plus_svm_features;
712 x86_cpu_def->features &= ~minus_features;
713 x86_cpu_def->ext_features &= ~minus_ext_features;
714 x86_cpu_def->ext2_features &= ~minus_ext2_features;
715 x86_cpu_def->ext3_features &= ~minus_ext3_features;
716 x86_cpu_def->kvm_features &= ~minus_kvm_features;
717 x86_cpu_def->svm_features &= ~minus_svm_features;
718 if (check_cpuid) {
719 if (check_features_against_host(x86_cpu_def) && enforce_cpuid)
720 goto error;
721 }
722 free(s);
723 return 0;
724
725 error:
726 free(s);
727 return -1;
728 }
729
730 /* generate a composite string into buf of all cpuid names in featureset
731 * selected by fbits. indicate truncation at bufsize in the event of overflow.
732 * if flags, suppress names undefined in featureset.
733 */
734 static void listflags(char *buf, int bufsize, uint32_t fbits,
735 const char **featureset, uint32_t flags)
736 {
737 const char **p = &featureset[31];
738 char *q, *b, bit;
739 int nc;
740
741 b = 4 <= bufsize ? buf + (bufsize -= 3) - 1 : NULL;
742 *buf = '\0';
743 for (q = buf, bit = 31; fbits && bufsize; --p, fbits &= ~(1 << bit), --bit)
744 if (fbits & 1 << bit && (*p || !flags)) {
745 if (*p)
746 nc = snprintf(q, bufsize, "%s%s", q == buf ? "" : " ", *p);
747 else
748 nc = snprintf(q, bufsize, "%s[%d]", q == buf ? "" : " ", bit);
749 if (bufsize <= nc) {
750 if (b) {
751 memcpy(b, "...", sizeof("..."));
752 }
753 return;
754 }
755 q += nc;
756 bufsize -= nc;
757 }
758 }
759
760 /* generate CPU information:
761 * -? list model names
762 * -?model list model names/IDs
763 * -?dump output all model (x86_def_t) data
764 * -?cpuid list all recognized cpuid flag names
765 */
766 void x86_cpu_list(FILE *f, fprintf_function cpu_fprintf, const char *optarg)
767 {
768 unsigned char model = !strcmp("?model", optarg);
769 unsigned char dump = !strcmp("?dump", optarg);
770 unsigned char cpuid = !strcmp("?cpuid", optarg);
771 x86_def_t *def;
772 char buf[256];
773
774 if (cpuid) {
775 (*cpu_fprintf)(f, "Recognized CPUID flags:\n");
776 listflags(buf, sizeof (buf), (uint32_t)~0, feature_name, 1);
777 (*cpu_fprintf)(f, " f_edx: %s\n", buf);
778 listflags(buf, sizeof (buf), (uint32_t)~0, ext_feature_name, 1);
779 (*cpu_fprintf)(f, " f_ecx: %s\n", buf);
780 listflags(buf, sizeof (buf), (uint32_t)~0, ext2_feature_name, 1);
781 (*cpu_fprintf)(f, " extf_edx: %s\n", buf);
782 listflags(buf, sizeof (buf), (uint32_t)~0, ext3_feature_name, 1);
783 (*cpu_fprintf)(f, " extf_ecx: %s\n", buf);
784 return;
785 }
786 for (def = x86_defs; def; def = def->next) {
787 snprintf(buf, sizeof (buf), def->flags ? "[%s]": "%s", def->name);
788 if (model || dump) {
789 (*cpu_fprintf)(f, "x86 %16s %-48s\n", buf, def->model_id);
790 } else {
791 (*cpu_fprintf)(f, "x86 %16s\n", buf);
792 }
793 if (dump) {
794 memcpy(buf, &def->vendor1, sizeof (def->vendor1));
795 memcpy(buf + 4, &def->vendor2, sizeof (def->vendor2));
796 memcpy(buf + 8, &def->vendor3, sizeof (def->vendor3));
797 buf[12] = '\0';
798 (*cpu_fprintf)(f,
799 " family %d model %d stepping %d level %d xlevel 0x%x"
800 " vendor \"%s\"\n",
801 def->family, def->model, def->stepping, def->level,
802 def->xlevel, buf);
803 listflags(buf, sizeof (buf), def->features, feature_name, 0);
804 (*cpu_fprintf)(f, " feature_edx %08x (%s)\n", def->features,
805 buf);
806 listflags(buf, sizeof (buf), def->ext_features, ext_feature_name,
807 0);
808 (*cpu_fprintf)(f, " feature_ecx %08x (%s)\n", def->ext_features,
809 buf);
810 listflags(buf, sizeof (buf), def->ext2_features, ext2_feature_name,
811 0);
812 (*cpu_fprintf)(f, " extfeature_edx %08x (%s)\n",
813 def->ext2_features, buf);
814 listflags(buf, sizeof (buf), def->ext3_features, ext3_feature_name,
815 0);
816 (*cpu_fprintf)(f, " extfeature_ecx %08x (%s)\n",
817 def->ext3_features, buf);
818 (*cpu_fprintf)(f, "\n");
819 }
820 }
821 if (kvm_enabled()) {
822 (*cpu_fprintf)(f, "x86 %16s\n", "[host]");
823 }
824 }
825
826 int cpu_x86_register (CPUX86State *env, const char *cpu_model)
827 {
828 x86_def_t def1, *def = &def1;
829
830 memset(def, 0, sizeof(*def));
831
832 if (cpu_x86_find_by_name(def, cpu_model) < 0)
833 return -1;
834 if (def->vendor1) {
835 env->cpuid_vendor1 = def->vendor1;
836 env->cpuid_vendor2 = def->vendor2;
837 env->cpuid_vendor3 = def->vendor3;
838 } else {
839 env->cpuid_vendor1 = CPUID_VENDOR_INTEL_1;
840 env->cpuid_vendor2 = CPUID_VENDOR_INTEL_2;
841 env->cpuid_vendor3 = CPUID_VENDOR_INTEL_3;
842 }
843 env->cpuid_vendor_override = def->vendor_override;
844 env->cpuid_level = def->level;
845 if (def->family > 0x0f)
846 env->cpuid_version = 0xf00 | ((def->family - 0x0f) << 20);
847 else
848 env->cpuid_version = def->family << 8;
849 env->cpuid_version |= ((def->model & 0xf) << 4) | ((def->model >> 4) << 16);
850 env->cpuid_version |= def->stepping;
851 env->cpuid_features = def->features;
852 env->cpuid_ext_features = def->ext_features;
853 env->cpuid_ext2_features = def->ext2_features;
854 env->cpuid_ext3_features = def->ext3_features;
855 env->cpuid_xlevel = def->xlevel;
856 env->cpuid_kvm_features = def->kvm_features;
857 env->cpuid_svm_features = def->svm_features;
858 if (!kvm_enabled()) {
859 env->cpuid_features &= TCG_FEATURES;
860 env->cpuid_ext_features &= TCG_EXT_FEATURES;
861 env->cpuid_ext2_features &= (TCG_EXT2_FEATURES
862 #ifdef TARGET_X86_64
863 | CPUID_EXT2_SYSCALL | CPUID_EXT2_LM
864 #endif
865 );
866 env->cpuid_ext3_features &= TCG_EXT3_FEATURES;
867 env->cpuid_svm_features &= TCG_SVM_FEATURES;
868 }
869 {
870 const char *model_id = def->model_id;
871 int c, len, i;
872 if (!model_id)
873 model_id = "";
874 len = strlen(model_id);
875 for(i = 0; i < 48; i++) {
876 if (i >= len)
877 c = '\0';
878 else
879 c = (uint8_t)model_id[i];
880 env->cpuid_model[i >> 2] |= c << (8 * (i & 3));
881 }
882 }
883 return 0;
884 }
885
886 #if !defined(CONFIG_USER_ONLY)
887 /* copy vendor id string to 32 bit register, nul pad as needed
888 */
889 static void cpyid(const char *s, uint32_t *id)
890 {
891 char *d = (char *)id;
892 char i;
893
894 for (i = sizeof (*id); i--; )
895 *d++ = *s ? *s++ : '\0';
896 }
897
898 /* interpret radix and convert from string to arbitrary scalar,
899 * otherwise flag failure
900 */
901 #define setscalar(pval, str, perr) \
902 { \
903 char *pend; \
904 unsigned long ul; \
905 \
906 ul = strtoul(str, &pend, 0); \
907 *str && !*pend ? (*pval = ul) : (*perr = 1); \
908 }
909
910 /* map cpuid options to feature bits, otherwise return failure
911 * (option tags in *str are delimited by whitespace)
912 */
913 static void setfeatures(uint32_t *pval, const char *str,
914 const char **featureset, int *perr)
915 {
916 const char *p, *q;
917
918 for (q = p = str; *p || *q; q = p) {
919 while (iswhite(*p))
920 q = ++p;
921 while (*p && !iswhite(*p))
922 ++p;
923 if (!*q && !*p)
924 return;
925 if (!lookup_feature(pval, q, p, featureset)) {
926 fprintf(stderr, "error: feature \"%.*s\" not available in set\n",
927 (int)(p - q), q);
928 *perr = 1;
929 return;
930 }
931 }
932 }
933
934 /* map config file options to x86_def_t form
935 */
936 static int cpudef_setfield(const char *name, const char *str, void *opaque)
937 {
938 x86_def_t *def = opaque;
939 int err = 0;
940
941 if (!strcmp(name, "name")) {
942 def->name = strdup(str);
943 } else if (!strcmp(name, "model_id")) {
944 strncpy(def->model_id, str, sizeof (def->model_id));
945 } else if (!strcmp(name, "level")) {
946 setscalar(&def->level, str, &err)
947 } else if (!strcmp(name, "vendor")) {
948 cpyid(&str[0], &def->vendor1);
949 cpyid(&str[4], &def->vendor2);
950 cpyid(&str[8], &def->vendor3);
951 } else if (!strcmp(name, "family")) {
952 setscalar(&def->family, str, &err)
953 } else if (!strcmp(name, "model")) {
954 setscalar(&def->model, str, &err)
955 } else if (!strcmp(name, "stepping")) {
956 setscalar(&def->stepping, str, &err)
957 } else if (!strcmp(name, "feature_edx")) {
958 setfeatures(&def->features, str, feature_name, &err);
959 } else if (!strcmp(name, "feature_ecx")) {
960 setfeatures(&def->ext_features, str, ext_feature_name, &err);
961 } else if (!strcmp(name, "extfeature_edx")) {
962 setfeatures(&def->ext2_features, str, ext2_feature_name, &err);
963 } else if (!strcmp(name, "extfeature_ecx")) {
964 setfeatures(&def->ext3_features, str, ext3_feature_name, &err);
965 } else if (!strcmp(name, "xlevel")) {
966 setscalar(&def->xlevel, str, &err)
967 } else {
968 fprintf(stderr, "error: unknown option [%s = %s]\n", name, str);
969 return (1);
970 }
971 if (err) {
972 fprintf(stderr, "error: bad option value [%s = %s]\n", name, str);
973 return (1);
974 }
975 return (0);
976 }
977
978 /* register config file entry as x86_def_t
979 */
980 static int cpudef_register(QemuOpts *opts, void *opaque)
981 {
982 x86_def_t *def = qemu_mallocz(sizeof (x86_def_t));
983
984 qemu_opt_foreach(opts, cpudef_setfield, def, 1);
985 def->next = x86_defs;
986 x86_defs = def;
987 return (0);
988 }
989
990 void cpu_clear_apic_feature(CPUX86State *env)
991 {
992 env->cpuid_features &= ~CPUID_APIC;
993 }
994
995 #endif /* !CONFIG_USER_ONLY */
996
997 /* register "cpudef" models defined in configuration file. Here we first
998 * preload any built-in definitions
999 */
1000 void x86_cpudef_setup(void)
1001 {
1002 int i;
1003
1004 for (i = 0; i < ARRAY_SIZE(builtin_x86_defs); ++i) {
1005 builtin_x86_defs[i].next = x86_defs;
1006 builtin_x86_defs[i].flags = 1;
1007 x86_defs = &builtin_x86_defs[i];
1008 }
1009 #if !defined(CONFIG_USER_ONLY)
1010 qemu_opts_foreach(qemu_find_opts("cpudef"), cpudef_register, NULL, 0);
1011 #endif
1012 }
1013
1014 static void get_cpuid_vendor(CPUX86State *env, uint32_t *ebx,
1015 uint32_t *ecx, uint32_t *edx)
1016 {
1017 *ebx = env->cpuid_vendor1;
1018 *edx = env->cpuid_vendor2;
1019 *ecx = env->cpuid_vendor3;
1020
1021 /* sysenter isn't supported on compatibility mode on AMD, syscall
1022 * isn't supported in compatibility mode on Intel.
1023 * Normally we advertise the actual cpu vendor, but you can override
1024 * this if you want to use KVM's sysenter/syscall emulation
1025 * in compatibility mode and when doing cross vendor migration
1026 */
1027 if (kvm_enabled() && ! env->cpuid_vendor_override) {
1028 host_cpuid(0, 0, NULL, ebx, ecx, edx);
1029 }
1030 }
1031
1032 void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
1033 uint32_t *eax, uint32_t *ebx,
1034 uint32_t *ecx, uint32_t *edx)
1035 {
1036 /* test if maximum index reached */
1037 if (index & 0x80000000) {
1038 if (index > env->cpuid_xlevel)
1039 index = env->cpuid_level;
1040 } else {
1041 if (index > env->cpuid_level)
1042 index = env->cpuid_level;
1043 }
1044
1045 switch(index) {
1046 case 0:
1047 *eax = env->cpuid_level;
1048 get_cpuid_vendor(env, ebx, ecx, edx);
1049 break;
1050 case 1:
1051 *eax = env->cpuid_version;
1052 *ebx = (env->cpuid_apic_id << 24) | 8 << 8; /* CLFLUSH size in quad words, Linux wants it. */
1053 *ecx = env->cpuid_ext_features;
1054 *edx = env->cpuid_features;
1055 if (env->nr_cores * env->nr_threads > 1) {
1056 *ebx |= (env->nr_cores * env->nr_threads) << 16;
1057 *edx |= 1 << 28; /* HTT bit */
1058 }
1059 break;
1060 case 2:
1061 /* cache info: needed for Pentium Pro compatibility */
1062 *eax = 1;
1063 *ebx = 0;
1064 *ecx = 0;
1065 *edx = 0x2c307d;
1066 break;
1067 case 4:
1068 /* cache info: needed for Core compatibility */
1069 if (env->nr_cores > 1) {
1070 *eax = (env->nr_cores - 1) << 26;
1071 } else {
1072 *eax = 0;
1073 }
1074 switch (count) {
1075 case 0: /* L1 dcache info */
1076 *eax |= 0x0000121;
1077 *ebx = 0x1c0003f;
1078 *ecx = 0x000003f;
1079 *edx = 0x0000001;
1080 break;
1081 case 1: /* L1 icache info */
1082 *eax |= 0x0000122;
1083 *ebx = 0x1c0003f;
1084 *ecx = 0x000003f;
1085 *edx = 0x0000001;
1086 break;
1087 case 2: /* L2 cache info */
1088 *eax |= 0x0000143;
1089 if (env->nr_threads > 1) {
1090 *eax |= (env->nr_threads - 1) << 14;
1091 }
1092 *ebx = 0x3c0003f;
1093 *ecx = 0x0000fff;
1094 *edx = 0x0000001;
1095 break;
1096 default: /* end of info */
1097 *eax = 0;
1098 *ebx = 0;
1099 *ecx = 0;
1100 *edx = 0;
1101 break;
1102 }
1103 break;
1104 case 5:
1105 /* mwait info: needed for Core compatibility */
1106 *eax = 0; /* Smallest monitor-line size in bytes */
1107 *ebx = 0; /* Largest monitor-line size in bytes */
1108 *ecx = CPUID_MWAIT_EMX | CPUID_MWAIT_IBE;
1109 *edx = 0;
1110 break;
1111 case 6:
1112 /* Thermal and Power Leaf */
1113 *eax = 0;
1114 *ebx = 0;
1115 *ecx = 0;
1116 *edx = 0;
1117 break;
1118 case 9:
1119 /* Direct Cache Access Information Leaf */
1120 *eax = 0; /* Bits 0-31 in DCA_CAP MSR */
1121 *ebx = 0;
1122 *ecx = 0;
1123 *edx = 0;
1124 break;
1125 case 0xA:
1126 /* Architectural Performance Monitoring Leaf */
1127 *eax = 0;
1128 *ebx = 0;
1129 *ecx = 0;
1130 *edx = 0;
1131 break;
1132 case 0xD:
1133 /* Processor Extended State */
1134 if (!(env->cpuid_ext_features & CPUID_EXT_XSAVE)) {
1135 *eax = 0;
1136 *ebx = 0;
1137 *ecx = 0;
1138 *edx = 0;
1139 break;
1140 }
1141 if (kvm_enabled()) {
1142 *eax = kvm_arch_get_supported_cpuid(env, 0xd, count, R_EAX);
1143 *ebx = kvm_arch_get_supported_cpuid(env, 0xd, count, R_EBX);
1144 *ecx = kvm_arch_get_supported_cpuid(env, 0xd, count, R_ECX);
1145 *edx = kvm_arch_get_supported_cpuid(env, 0xd, count, R_EDX);
1146 } else {
1147 *eax = 0;
1148 *ebx = 0;
1149 *ecx = 0;
1150 *edx = 0;
1151 }
1152 break;
1153 case 0x80000000:
1154 *eax = env->cpuid_xlevel;
1155 *ebx = env->cpuid_vendor1;
1156 *edx = env->cpuid_vendor2;
1157 *ecx = env->cpuid_vendor3;
1158 break;
1159 case 0x80000001:
1160 *eax = env->cpuid_version;
1161 *ebx = 0;
1162 *ecx = env->cpuid_ext3_features;
1163 *edx = env->cpuid_ext2_features;
1164
1165 /* The Linux kernel checks for the CMPLegacy bit and
1166 * discards multiple thread information if it is set.
1167 * So dont set it here for Intel to make Linux guests happy.
1168 */
1169 if (env->nr_cores * env->nr_threads > 1) {
1170 uint32_t tebx, tecx, tedx;
1171 get_cpuid_vendor(env, &tebx, &tecx, &tedx);
1172 if (tebx != CPUID_VENDOR_INTEL_1 ||
1173 tedx != CPUID_VENDOR_INTEL_2 ||
1174 tecx != CPUID_VENDOR_INTEL_3) {
1175 *ecx |= 1 << 1; /* CmpLegacy bit */
1176 }
1177 }
1178 break;
1179 case 0x80000002:
1180 case 0x80000003:
1181 case 0x80000004:
1182 *eax = env->cpuid_model[(index - 0x80000002) * 4 + 0];
1183 *ebx = env->cpuid_model[(index - 0x80000002) * 4 + 1];
1184 *ecx = env->cpuid_model[(index - 0x80000002) * 4 + 2];
1185 *edx = env->cpuid_model[(index - 0x80000002) * 4 + 3];
1186 break;
1187 case 0x80000005:
1188 /* cache info (L1 cache) */
1189 *eax = 0x01ff01ff;
1190 *ebx = 0x01ff01ff;
1191 *ecx = 0x40020140;
1192 *edx = 0x40020140;
1193 break;
1194 case 0x80000006:
1195 /* cache info (L2 cache) */
1196 *eax = 0;
1197 *ebx = 0x42004200;
1198 *ecx = 0x02008140;
1199 *edx = 0;
1200 break;
1201 case 0x80000008:
1202 /* virtual & phys address size in low 2 bytes. */
1203 /* XXX: This value must match the one used in the MMU code. */
1204 if (env->cpuid_ext2_features & CPUID_EXT2_LM) {
1205 /* 64 bit processor */
1206 /* XXX: The physical address space is limited to 42 bits in exec.c. */
1207 *eax = 0x00003028; /* 48 bits virtual, 40 bits physical */
1208 } else {
1209 if (env->cpuid_features & CPUID_PSE36)
1210 *eax = 0x00000024; /* 36 bits physical */
1211 else
1212 *eax = 0x00000020; /* 32 bits physical */
1213 }
1214 *ebx = 0;
1215 *ecx = 0;
1216 *edx = 0;
1217 if (env->nr_cores * env->nr_threads > 1) {
1218 *ecx |= (env->nr_cores * env->nr_threads) - 1;
1219 }
1220 break;
1221 case 0x8000000A:
1222 if (env->cpuid_ext3_features & CPUID_EXT3_SVM) {
1223 *eax = 0x00000001; /* SVM Revision */
1224 *ebx = 0x00000010; /* nr of ASIDs */
1225 *ecx = 0;
1226 *edx = env->cpuid_svm_features; /* optional features */
1227 } else {
1228 *eax = 0;
1229 *ebx = 0;
1230 *ecx = 0;
1231 *edx = 0;
1232 }
1233 break;
1234 default:
1235 /* reserved values: zero */
1236 *eax = 0;
1237 *ebx = 0;
1238 *ecx = 0;
1239 *edx = 0;
1240 break;
1241 }
1242 }
QEmu