2 * i386 CPUID helper functions
4 * Copyright (c) 2003 Fabrice Bellard
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.
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.
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/>.
27 #include "qemu-option.h"
28 #include "qemu-config.h"
30 #include "qapi/qapi-visit-core.h"
34 /* feature flags taken from "Intel Processor Identification and the CPUID
35 * Instruction" and AMD's "CPUID Specification". In cases of disagreement
36 * between feature naming conventions, aliases may be added.
38 static const char *feature_name[] = {
39 "fpu", "vme", "de", "pse",
40 "tsc", "msr", "pae", "mce",
41 "cx8", "apic", NULL, "sep",
42 "mtrr", "pge", "mca", "cmov",
43 "pat", "pse36", "pn" /* Intel psn */, "clflush" /* Intel clfsh */,
44 NULL, "ds" /* Intel dts */, "acpi", "mmx",
45 "fxsr", "sse", "sse2", "ss",
46 "ht" /* Intel htt */, "tm", "ia64", "pbe",
48 static const char *ext_feature_name[] = {
49 "pni|sse3" /* Intel,AMD sse3 */, "pclmulqdq|pclmuldq", "dtes64", "monitor",
50 "ds_cpl", "vmx", "smx", "est",
51 "tm2", "ssse3", "cid", NULL,
52 "fma", "cx16", "xtpr", "pdcm",
53 NULL, NULL, "dca", "sse4.1|sse4_1",
54 "sse4.2|sse4_2", "x2apic", "movbe", "popcnt",
55 "tsc-deadline", "aes", "xsave", "osxsave",
56 "avx", NULL, NULL, "hypervisor",
58 static const char *ext2_feature_name[] = {
59 "fpu", "vme", "de", "pse",
60 "tsc", "msr", "pae", "mce",
61 "cx8" /* AMD CMPXCHG8B */, "apic", NULL, "syscall",
62 "mtrr", "pge", "mca", "cmov",
63 "pat", "pse36", NULL, NULL /* Linux mp */,
64 "nx|xd", NULL, "mmxext", "mmx",
65 "fxsr", "fxsr_opt|ffxsr", "pdpe1gb" /* AMD Page1GB */, "rdtscp",
66 NULL, "lm|i64", "3dnowext", "3dnow",
68 static const char *ext3_feature_name[] = {
69 "lahf_lm" /* AMD LahfSahf */, "cmp_legacy", "svm", "extapic" /* AMD ExtApicSpace */,
70 "cr8legacy" /* AMD AltMovCr8 */, "abm", "sse4a", "misalignsse",
71 "3dnowprefetch", "osvw", "ibs", "xop",
72 "skinit", "wdt", NULL, NULL,
73 "fma4", NULL, "cvt16", "nodeid_msr",
74 NULL, NULL, NULL, NULL,
75 NULL, NULL, NULL, NULL,
76 NULL, NULL, NULL, NULL,
79 static const char *kvm_feature_name[] = {
80 "kvmclock", "kvm_nopiodelay", "kvm_mmu", "kvmclock", "kvm_asyncpf", NULL, NULL, NULL,
81 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
82 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
83 NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
86 static const char *svm_feature_name[] = {
87 "npt", "lbrv", "svm_lock", "nrip_save",
88 "tsc_scale", "vmcb_clean", "flushbyasid", "decodeassists",
89 NULL, NULL, "pause_filter", NULL,
90 "pfthreshold", NULL, NULL, NULL,
91 NULL, NULL, NULL, NULL,
92 NULL, NULL, NULL, NULL,
93 NULL, NULL, NULL, NULL,
94 NULL, NULL, NULL, NULL,
97 /* collects per-function cpuid data
99 typedef struct model_features_t {
100 uint32_t *guest_feat;
103 const char **flag_names;
108 int enforce_cpuid = 0;
110 void host_cpuid(uint32_t function, uint32_t count,
111 uint32_t *eax, uint32_t *ebx, uint32_t *ecx, uint32_t *edx)
113 #if defined(CONFIG_KVM)
118 : "=a"(vec[0]), "=b"(vec[1]),
119 "=c"(vec[2]), "=d"(vec[3])
120 : "0"(function), "c"(count) : "cc");
122 asm volatile("pusha \n\t"
124 "mov %%eax, 0(%2) \n\t"
125 "mov %%ebx, 4(%2) \n\t"
126 "mov %%ecx, 8(%2) \n\t"
127 "mov %%edx, 12(%2) \n\t"
129 : : "a"(function), "c"(count), "S"(vec)
144 #define iswhite(c) ((c) && ((c) <= ' ' || '~' < (c)))
146 /* general substring compare of *[s1..e1) and *[s2..e2). sx is start of
147 * a substring. ex if !NULL points to the first char after a substring,
148 * otherwise the string is assumed to sized by a terminating nul.
149 * Return lexical ordering of *s1:*s2.
151 static int sstrcmp(const char *s1, const char *e1, const char *s2,
155 if (!*s1 || !*s2 || *s1 != *s2)
158 if (s1 == e1 && s2 == e2)
167 /* compare *[s..e) to *altstr. *altstr may be a simple string or multiple
168 * '|' delimited (possibly empty) strings in which case search for a match
169 * within the alternatives proceeds left to right. Return 0 for success,
170 * non-zero otherwise.
172 static int altcmp(const char *s, const char *e, const char *altstr)
176 for (q = p = altstr; ; ) {
177 while (*p && *p != '|')
179 if ((q == p && !*s) || (q != p && !sstrcmp(s, e, q, p)))
188 /* search featureset for flag *[s..e), if found set corresponding bit in
189 * *pval and return true, otherwise return false
191 static bool lookup_feature(uint32_t *pval, const char *s, const char *e,
192 const char **featureset)
198 for (mask = 1, ppc = featureset; mask; mask <<= 1, ++ppc) {
199 if (*ppc && !altcmp(s, e, *ppc)) {
207 static void add_flagname_to_bitmaps(const char *flagname, uint32_t *features,
208 uint32_t *ext_features,
209 uint32_t *ext2_features,
210 uint32_t *ext3_features,
211 uint32_t *kvm_features,
212 uint32_t *svm_features)
214 if (!lookup_feature(features, flagname, NULL, feature_name) &&
215 !lookup_feature(ext_features, flagname, NULL, ext_feature_name) &&
216 !lookup_feature(ext2_features, flagname, NULL, ext2_feature_name) &&
217 !lookup_feature(ext3_features, flagname, NULL, ext3_feature_name) &&
218 !lookup_feature(kvm_features, flagname, NULL, kvm_feature_name) &&
219 !lookup_feature(svm_features, flagname, NULL, svm_feature_name))
220 fprintf(stderr, "CPU feature %s not found\n", flagname);
223 typedef struct x86_def_t {
224 struct x86_def_t *next;
227 uint32_t vendor1, vendor2, vendor3;
232 uint32_t features, ext_features, ext2_features, ext3_features;
233 uint32_t kvm_features, svm_features;
238 /* Store the results of Centaur's CPUID instructions */
239 uint32_t ext4_features;
241 /* The feature bits on CPUID[EAX=7,ECX=0].EBX */
242 uint32_t cpuid_7_0_ebx_features;
245 #define I486_FEATURES (CPUID_FP87 | CPUID_VME | CPUID_PSE)
246 #define PENTIUM_FEATURES (I486_FEATURES | CPUID_DE | CPUID_TSC | \
247 CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_MMX | CPUID_APIC)
248 #define PENTIUM2_FEATURES (PENTIUM_FEATURES | CPUID_PAE | CPUID_SEP | \
249 CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \
250 CPUID_PSE36 | CPUID_FXSR)
251 #define PENTIUM3_FEATURES (PENTIUM2_FEATURES | CPUID_SSE)
252 #define PPRO_FEATURES (CPUID_FP87 | CPUID_DE | CPUID_PSE | CPUID_TSC | \
253 CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_PGE | CPUID_CMOV | \
254 CPUID_PAT | CPUID_FXSR | CPUID_MMX | CPUID_SSE | CPUID_SSE2 | \
255 CPUID_PAE | CPUID_SEP | CPUID_APIC)
256 #define EXT2_FEATURE_MASK 0x0183F3FF
258 #define TCG_FEATURES (CPUID_FP87 | CPUID_PSE | CPUID_TSC | CPUID_MSR | \
259 CPUID_PAE | CPUID_MCE | CPUID_CX8 | CPUID_APIC | CPUID_SEP | \
260 CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \
261 CPUID_PSE36 | CPUID_CLFLUSH | CPUID_ACPI | CPUID_MMX | \
262 CPUID_FXSR | CPUID_SSE | CPUID_SSE2 | CPUID_SS)
263 /* partly implemented:
264 CPUID_MTRR, CPUID_MCA, CPUID_CLFLUSH (needed for Win64)
265 CPUID_PSE36 (needed for Solaris) */
267 CPUID_VME, CPUID_DTS, CPUID_SS, CPUID_HT, CPUID_TM, CPUID_PBE */
268 #define TCG_EXT_FEATURES (CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | \
269 CPUID_EXT_CX16 | CPUID_EXT_POPCNT | \
270 CPUID_EXT_HYPERVISOR)
272 CPUID_EXT_DTES64, CPUID_EXT_DSCPL, CPUID_EXT_VMX, CPUID_EXT_EST,
273 CPUID_EXT_TM2, CPUID_EXT_XTPR, CPUID_EXT_PDCM, CPUID_EXT_XSAVE */
274 #define TCG_EXT2_FEATURES ((TCG_FEATURES & EXT2_FEATURE_MASK) | \
275 CPUID_EXT2_NX | CPUID_EXT2_MMXEXT | CPUID_EXT2_RDTSCP | \
276 CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT)
278 CPUID_EXT2_PDPE1GB */
279 #define TCG_EXT3_FEATURES (CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | \
280 CPUID_EXT3_CR8LEG | CPUID_EXT3_ABM | CPUID_EXT3_SSE4A)
281 #define TCG_SVM_FEATURES 0
283 /* maintains list of cpu model definitions
285 static x86_def_t *x86_defs = {NULL};
287 /* built-in cpu model definitions (deprecated)
289 static x86_def_t builtin_x86_defs[] = {
293 .vendor1 = CPUID_VENDOR_AMD_1,
294 .vendor2 = CPUID_VENDOR_AMD_2,
295 .vendor3 = CPUID_VENDOR_AMD_3,
299 .features = PPRO_FEATURES |
300 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
302 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_CX16 | CPUID_EXT_POPCNT,
303 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) |
304 CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
305 .ext3_features = CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM |
306 CPUID_EXT3_ABM | CPUID_EXT3_SSE4A,
307 .xlevel = 0x8000000A,
312 .vendor1 = CPUID_VENDOR_AMD_1,
313 .vendor2 = CPUID_VENDOR_AMD_2,
314 .vendor3 = CPUID_VENDOR_AMD_3,
318 .features = PPRO_FEATURES |
319 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
320 CPUID_PSE36 | CPUID_VME | CPUID_HT,
321 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_CX16 |
323 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) |
324 CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX |
325 CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT | CPUID_EXT2_MMXEXT |
326 CPUID_EXT2_FFXSR | CPUID_EXT2_PDPE1GB | CPUID_EXT2_RDTSCP,
327 /* Missing: CPUID_EXT3_CMP_LEG, CPUID_EXT3_EXTAPIC,
329 CPUID_EXT3_MISALIGNSSE, CPUID_EXT3_3DNOWPREFETCH,
330 CPUID_EXT3_OSVW, CPUID_EXT3_IBS */
331 .ext3_features = CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM |
332 CPUID_EXT3_ABM | CPUID_EXT3_SSE4A,
333 .svm_features = CPUID_SVM_NPT | CPUID_SVM_LBRV,
334 .xlevel = 0x8000001A,
335 .model_id = "AMD Phenom(tm) 9550 Quad-Core Processor"
343 .features = PPRO_FEATURES |
344 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
345 CPUID_PSE36 | CPUID_VME | CPUID_DTS | CPUID_ACPI | CPUID_SS |
346 CPUID_HT | CPUID_TM | CPUID_PBE,
347 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 |
348 CPUID_EXT_DTES64 | CPUID_EXT_DSCPL | CPUID_EXT_VMX | CPUID_EXT_EST |
349 CPUID_EXT_TM2 | CPUID_EXT_CX16 | CPUID_EXT_XTPR | CPUID_EXT_PDCM,
350 .ext2_features = CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
351 .ext3_features = CPUID_EXT3_LAHF_LM,
352 .xlevel = 0x80000008,
353 .model_id = "Intel(R) Core(TM)2 Duo CPU T7700 @ 2.40GHz",
358 .vendor1 = CPUID_VENDOR_INTEL_1,
359 .vendor2 = CPUID_VENDOR_INTEL_2,
360 .vendor3 = CPUID_VENDOR_INTEL_3,
364 /* Missing: CPUID_VME, CPUID_HT */
365 .features = PPRO_FEATURES |
366 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
368 /* Missing: CPUID_EXT_POPCNT, CPUID_EXT_MONITOR */
369 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_CX16,
370 /* Missing: CPUID_EXT2_PDPE1GB, CPUID_EXT2_RDTSCP */
371 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) |
372 CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
373 /* Missing: CPUID_EXT3_LAHF_LM, CPUID_EXT3_CMP_LEG, CPUID_EXT3_EXTAPIC,
374 CPUID_EXT3_CR8LEG, CPUID_EXT3_ABM, CPUID_EXT3_SSE4A,
375 CPUID_EXT3_MISALIGNSSE, CPUID_EXT3_3DNOWPREFETCH,
376 CPUID_EXT3_OSVW, CPUID_EXT3_IBS, CPUID_EXT3_SVM */
378 .xlevel = 0x80000008,
379 .model_id = "Common KVM processor"
387 .features = PPRO_FEATURES,
388 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_POPCNT,
389 .xlevel = 0x80000004,
397 .features = PPRO_FEATURES |
398 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_PSE36,
399 .ext_features = CPUID_EXT_SSE3,
400 .ext2_features = PPRO_FEATURES & EXT2_FEATURE_MASK,
402 .xlevel = 0x80000008,
403 .model_id = "Common 32-bit KVM processor"
411 .features = PPRO_FEATURES | CPUID_VME |
412 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_DTS | CPUID_ACPI |
413 CPUID_SS | CPUID_HT | CPUID_TM | CPUID_PBE,
414 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_VMX |
415 CPUID_EXT_EST | CPUID_EXT_TM2 | CPUID_EXT_XTPR | CPUID_EXT_PDCM,
416 .ext2_features = CPUID_EXT2_NX,
417 .xlevel = 0x80000008,
418 .model_id = "Genuine Intel(R) CPU T2600 @ 2.16GHz",
426 .features = I486_FEATURES,
435 .features = PENTIUM_FEATURES,
444 .features = PENTIUM2_FEATURES,
453 .features = PENTIUM3_FEATURES,
459 .vendor1 = CPUID_VENDOR_AMD_1,
460 .vendor2 = CPUID_VENDOR_AMD_2,
461 .vendor3 = CPUID_VENDOR_AMD_3,
465 .features = PPRO_FEATURES | CPUID_PSE36 | CPUID_VME | CPUID_MTRR | CPUID_MCA,
466 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | CPUID_EXT2_MMXEXT | CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT,
467 .xlevel = 0x80000008,
471 /* original is on level 10 */
476 .features = PPRO_FEATURES |
477 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_VME | CPUID_DTS |
478 CPUID_ACPI | CPUID_SS | CPUID_HT | CPUID_TM | CPUID_PBE,
479 /* Some CPUs got no CPUID_SEP */
480 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 |
481 CPUID_EXT_DSCPL | CPUID_EXT_EST | CPUID_EXT_TM2 | CPUID_EXT_XTPR,
482 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | CPUID_EXT2_NX,
483 .ext3_features = CPUID_EXT3_LAHF_LM,
484 .xlevel = 0x8000000A,
485 .model_id = "Intel(R) Atom(TM) CPU N270 @ 1.60GHz",
489 static int cpu_x86_fill_model_id(char *str)
491 uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
494 for (i = 0; i < 3; i++) {
495 host_cpuid(0x80000002 + i, 0, &eax, &ebx, &ecx, &edx);
496 memcpy(str + i * 16 + 0, &eax, 4);
497 memcpy(str + i * 16 + 4, &ebx, 4);
498 memcpy(str + i * 16 + 8, &ecx, 4);
499 memcpy(str + i * 16 + 12, &edx, 4);
504 static int cpu_x86_fill_host(x86_def_t *x86_cpu_def)
506 uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
508 x86_cpu_def->name = "host";
509 host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx);
510 x86_cpu_def->level = eax;
511 x86_cpu_def->vendor1 = ebx;
512 x86_cpu_def->vendor2 = edx;
513 x86_cpu_def->vendor3 = ecx;
515 host_cpuid(0x1, 0, &eax, &ebx, &ecx, &edx);
516 x86_cpu_def->family = ((eax >> 8) & 0x0F) + ((eax >> 20) & 0xFF);
517 x86_cpu_def->model = ((eax >> 4) & 0x0F) | ((eax & 0xF0000) >> 12);
518 x86_cpu_def->stepping = eax & 0x0F;
519 x86_cpu_def->ext_features = ecx;
520 x86_cpu_def->features = edx;
522 if (kvm_enabled() && x86_cpu_def->level >= 7) {
523 x86_cpu_def->cpuid_7_0_ebx_features = kvm_arch_get_supported_cpuid(kvm_state, 0x7, 0, R_EBX);
525 x86_cpu_def->cpuid_7_0_ebx_features = 0;
528 host_cpuid(0x80000000, 0, &eax, &ebx, &ecx, &edx);
529 x86_cpu_def->xlevel = eax;
531 host_cpuid(0x80000001, 0, &eax, &ebx, &ecx, &edx);
532 x86_cpu_def->ext2_features = edx;
533 x86_cpu_def->ext3_features = ecx;
534 cpu_x86_fill_model_id(x86_cpu_def->model_id);
535 x86_cpu_def->vendor_override = 0;
537 /* Call Centaur's CPUID instruction. */
538 if (x86_cpu_def->vendor1 == CPUID_VENDOR_VIA_1 &&
539 x86_cpu_def->vendor2 == CPUID_VENDOR_VIA_2 &&
540 x86_cpu_def->vendor3 == CPUID_VENDOR_VIA_3) {
541 host_cpuid(0xC0000000, 0, &eax, &ebx, &ecx, &edx);
542 if (eax >= 0xC0000001) {
543 /* Support VIA max extended level */
544 x86_cpu_def->xlevel2 = eax;
545 host_cpuid(0xC0000001, 0, &eax, &ebx, &ecx, &edx);
546 x86_cpu_def->ext4_features = edx;
551 * Every SVM feature requires emulation support in KVM - so we can't just
552 * read the host features here. KVM might even support SVM features not
553 * available on the host hardware. Just set all bits and mask out the
554 * unsupported ones later.
556 x86_cpu_def->svm_features = -1;
561 static int unavailable_host_feature(struct model_features_t *f, uint32_t mask)
565 for (i = 0; i < 32; ++i)
567 fprintf(stderr, "warning: host cpuid %04x_%04x lacks requested"
568 " flag '%s' [0x%08x]\n",
569 f->cpuid >> 16, f->cpuid & 0xffff,
570 f->flag_names[i] ? f->flag_names[i] : "[reserved]", mask);
576 /* best effort attempt to inform user requested cpu flags aren't making
577 * their way to the guest. Note: ft[].check_feat ideally should be
578 * specified via a guest_def field to suppress report of extraneous flags.
580 static int check_features_against_host(x86_def_t *guest_def)
585 struct model_features_t ft[] = {
586 {&guest_def->features, &host_def.features,
587 ~0, feature_name, 0x00000000},
588 {&guest_def->ext_features, &host_def.ext_features,
589 ~CPUID_EXT_HYPERVISOR, ext_feature_name, 0x00000001},
590 {&guest_def->ext2_features, &host_def.ext2_features,
591 ~PPRO_FEATURES, ext2_feature_name, 0x80000000},
592 {&guest_def->ext3_features, &host_def.ext3_features,
593 ~CPUID_EXT3_SVM, ext3_feature_name, 0x80000001}};
595 cpu_x86_fill_host(&host_def);
596 for (rv = 0, i = 0; i < ARRAY_SIZE(ft); ++i)
597 for (mask = 1; mask; mask <<= 1)
598 if (ft[i].check_feat & mask && *ft[i].guest_feat & mask &&
599 !(*ft[i].host_feat & mask)) {
600 unavailable_host_feature(&ft[i], mask);
606 static void x86_cpuid_version_get_family(Object *obj, Visitor *v, void *opaque,
607 const char *name, Error **errp)
609 X86CPU *cpu = X86_CPU(obj);
610 CPUX86State *env = &cpu->env;
613 value = (env->cpuid_version >> 8) & 0xf;
615 value += (env->cpuid_version >> 20) & 0xff;
617 visit_type_int(v, &value, name, errp);
620 static void x86_cpuid_version_set_family(Object *obj, Visitor *v, void *opaque,
621 const char *name, Error **errp)
623 X86CPU *cpu = X86_CPU(obj);
624 CPUX86State *env = &cpu->env;
625 const int64_t min = 0;
626 const int64_t max = 0xff + 0xf;
629 visit_type_int(v, &value, name, errp);
630 if (error_is_set(errp)) {
633 if (value < min || value > max) {
634 error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
635 name ? name : "null", value, min, max);
639 env->cpuid_version &= ~0xff00f00;
641 env->cpuid_version |= 0xf00 | ((value - 0x0f) << 20);
643 env->cpuid_version |= value << 8;
647 static void x86_cpuid_version_get_model(Object *obj, Visitor *v, void *opaque,
648 const char *name, Error **errp)
650 X86CPU *cpu = X86_CPU(obj);
651 CPUX86State *env = &cpu->env;
654 value = (env->cpuid_version >> 4) & 0xf;
655 value |= ((env->cpuid_version >> 16) & 0xf) << 4;
656 visit_type_int(v, &value, name, errp);
659 static void x86_cpuid_version_set_model(Object *obj, Visitor *v, void *opaque,
660 const char *name, Error **errp)
662 X86CPU *cpu = X86_CPU(obj);
663 CPUX86State *env = &cpu->env;
664 const int64_t min = 0;
665 const int64_t max = 0xff;
668 visit_type_int(v, &value, name, errp);
669 if (error_is_set(errp)) {
672 if (value < min || value > max) {
673 error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
674 name ? name : "null", value, min, max);
678 env->cpuid_version &= ~0xf00f0;
679 env->cpuid_version |= ((value & 0xf) << 4) | ((value >> 4) << 16);
682 static void x86_cpuid_version_get_stepping(Object *obj, Visitor *v,
683 void *opaque, const char *name,
686 X86CPU *cpu = X86_CPU(obj);
687 CPUX86State *env = &cpu->env;
690 value = env->cpuid_version & 0xf;
691 visit_type_int(v, &value, name, errp);
694 static void x86_cpuid_version_set_stepping(Object *obj, Visitor *v,
695 void *opaque, const char *name,
698 X86CPU *cpu = X86_CPU(obj);
699 CPUX86State *env = &cpu->env;
700 const int64_t min = 0;
701 const int64_t max = 0xf;
704 visit_type_int(v, &value, name, errp);
705 if (error_is_set(errp)) {
708 if (value < min || value > max) {
709 error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
710 name ? name : "null", value, min, max);
714 env->cpuid_version &= ~0xf;
715 env->cpuid_version |= value & 0xf;
718 static void x86_cpuid_get_level(Object *obj, Visitor *v, void *opaque,
719 const char *name, Error **errp)
721 X86CPU *cpu = X86_CPU(obj);
723 visit_type_uint32(v, &cpu->env.cpuid_level, name, errp);
726 static void x86_cpuid_set_level(Object *obj, Visitor *v, void *opaque,
727 const char *name, Error **errp)
729 X86CPU *cpu = X86_CPU(obj);
731 visit_type_uint32(v, &cpu->env.cpuid_level, name, errp);
734 static void x86_cpuid_get_xlevel(Object *obj, Visitor *v, void *opaque,
735 const char *name, Error **errp)
737 X86CPU *cpu = X86_CPU(obj);
739 visit_type_uint32(v, &cpu->env.cpuid_xlevel, name, errp);
742 static void x86_cpuid_set_xlevel(Object *obj, Visitor *v, void *opaque,
743 const char *name, Error **errp)
745 X86CPU *cpu = X86_CPU(obj);
747 visit_type_uint32(v, &cpu->env.cpuid_xlevel, name, errp);
750 static char *x86_cpuid_get_vendor(Object *obj, Error **errp)
752 X86CPU *cpu = X86_CPU(obj);
753 CPUX86State *env = &cpu->env;
757 value = (char *)g_malloc(12 + 1);
758 for (i = 0; i < 4; i++) {
759 value[i ] = env->cpuid_vendor1 >> (8 * i);
760 value[i + 4] = env->cpuid_vendor2 >> (8 * i);
761 value[i + 8] = env->cpuid_vendor3 >> (8 * i);
767 static void x86_cpuid_set_vendor(Object *obj, const char *value,
770 X86CPU *cpu = X86_CPU(obj);
771 CPUX86State *env = &cpu->env;
774 if (strlen(value) != 12) {
775 error_set(errp, QERR_PROPERTY_VALUE_BAD, "",
780 env->cpuid_vendor1 = 0;
781 env->cpuid_vendor2 = 0;
782 env->cpuid_vendor3 = 0;
783 for (i = 0; i < 4; i++) {
784 env->cpuid_vendor1 |= ((uint8_t)value[i ]) << (8 * i);
785 env->cpuid_vendor2 |= ((uint8_t)value[i + 4]) << (8 * i);
786 env->cpuid_vendor3 |= ((uint8_t)value[i + 8]) << (8 * i);
788 env->cpuid_vendor_override = 1;
791 static char *x86_cpuid_get_model_id(Object *obj, Error **errp)
793 X86CPU *cpu = X86_CPU(obj);
794 CPUX86State *env = &cpu->env;
798 value = g_malloc(48 + 1);
799 for (i = 0; i < 48; i++) {
800 value[i] = env->cpuid_model[i >> 2] >> (8 * (i & 3));
806 static void x86_cpuid_set_model_id(Object *obj, const char *model_id,
809 X86CPU *cpu = X86_CPU(obj);
810 CPUX86State *env = &cpu->env;
813 if (model_id == NULL) {
816 len = strlen(model_id);
817 memset(env->cpuid_model, 0, 48);
818 for (i = 0; i < 48; i++) {
822 c = (uint8_t)model_id[i];
824 env->cpuid_model[i >> 2] |= c << (8 * (i & 3));
828 static void x86_cpuid_get_tsc_freq(Object *obj, Visitor *v, void *opaque,
829 const char *name, Error **errp)
831 X86CPU *cpu = X86_CPU(obj);
834 value = cpu->env.tsc_khz * 1000;
835 visit_type_int(v, &value, name, errp);
838 static void x86_cpuid_set_tsc_freq(Object *obj, Visitor *v, void *opaque,
839 const char *name, Error **errp)
841 X86CPU *cpu = X86_CPU(obj);
842 const int64_t min = 0;
843 const int64_t max = INT_MAX;
846 visit_type_int(v, &value, name, errp);
847 if (error_is_set(errp)) {
850 if (value < min || value > max) {
851 error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
852 name ? name : "null", value, min, max);
856 cpu->env.tsc_khz = value / 1000;
859 static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *cpu_model)
864 char *s = g_strdup(cpu_model);
865 char *featurestr, *name = strtok(s, ",");
866 /* Features to be added*/
867 uint32_t plus_features = 0, plus_ext_features = 0;
868 uint32_t plus_ext2_features = 0, plus_ext3_features = 0;
869 uint32_t plus_kvm_features = 0, plus_svm_features = 0;
870 /* Features to be removed */
871 uint32_t minus_features = 0, minus_ext_features = 0;
872 uint32_t minus_ext2_features = 0, minus_ext3_features = 0;
873 uint32_t minus_kvm_features = 0, minus_svm_features = 0;
876 for (def = x86_defs; def; def = def->next)
877 if (name && !strcmp(name, def->name))
879 if (kvm_enabled() && name && strcmp(name, "host") == 0) {
880 cpu_x86_fill_host(x86_cpu_def);
884 memcpy(x86_cpu_def, def, sizeof(*def));
887 plus_kvm_features = ~0; /* not supported bits will be filtered out later */
889 add_flagname_to_bitmaps("hypervisor", &plus_features,
890 &plus_ext_features, &plus_ext2_features, &plus_ext3_features,
891 &plus_kvm_features, &plus_svm_features);
893 featurestr = strtok(NULL, ",");
897 if (featurestr[0] == '+') {
898 add_flagname_to_bitmaps(featurestr + 1, &plus_features,
899 &plus_ext_features, &plus_ext2_features,
900 &plus_ext3_features, &plus_kvm_features,
902 } else if (featurestr[0] == '-') {
903 add_flagname_to_bitmaps(featurestr + 1, &minus_features,
904 &minus_ext_features, &minus_ext2_features,
905 &minus_ext3_features, &minus_kvm_features,
906 &minus_svm_features);
907 } else if ((val = strchr(featurestr, '='))) {
909 if (!strcmp(featurestr, "family")) {
911 numvalue = strtoul(val, &err, 0);
912 if (!*val || *err || numvalue > 0xff + 0xf) {
913 fprintf(stderr, "bad numerical value %s\n", val);
916 x86_cpu_def->family = numvalue;
917 } else if (!strcmp(featurestr, "model")) {
919 numvalue = strtoul(val, &err, 0);
920 if (!*val || *err || numvalue > 0xff) {
921 fprintf(stderr, "bad numerical value %s\n", val);
924 x86_cpu_def->model = numvalue;
925 } else if (!strcmp(featurestr, "stepping")) {
927 numvalue = strtoul(val, &err, 0);
928 if (!*val || *err || numvalue > 0xf) {
929 fprintf(stderr, "bad numerical value %s\n", val);
932 x86_cpu_def->stepping = numvalue ;
933 } else if (!strcmp(featurestr, "level")) {
935 numvalue = strtoul(val, &err, 0);
937 fprintf(stderr, "bad numerical value %s\n", val);
940 x86_cpu_def->level = numvalue;
941 } else if (!strcmp(featurestr, "xlevel")) {
943 numvalue = strtoul(val, &err, 0);
945 fprintf(stderr, "bad numerical value %s\n", val);
948 if (numvalue < 0x80000000) {
949 numvalue += 0x80000000;
951 x86_cpu_def->xlevel = numvalue;
952 } else if (!strcmp(featurestr, "vendor")) {
953 if (strlen(val) != 12) {
954 fprintf(stderr, "vendor string must be 12 chars long\n");
957 x86_cpu_def->vendor1 = 0;
958 x86_cpu_def->vendor2 = 0;
959 x86_cpu_def->vendor3 = 0;
960 for(i = 0; i < 4; i++) {
961 x86_cpu_def->vendor1 |= ((uint8_t)val[i ]) << (8 * i);
962 x86_cpu_def->vendor2 |= ((uint8_t)val[i + 4]) << (8 * i);
963 x86_cpu_def->vendor3 |= ((uint8_t)val[i + 8]) << (8 * i);
965 x86_cpu_def->vendor_override = 1;
966 } else if (!strcmp(featurestr, "model_id")) {
967 pstrcpy(x86_cpu_def->model_id, sizeof(x86_cpu_def->model_id),
969 } else if (!strcmp(featurestr, "tsc_freq")) {
973 tsc_freq = strtosz_suffix_unit(val, &err,
974 STRTOSZ_DEFSUFFIX_B, 1000);
975 if (tsc_freq < 0 || *err) {
976 fprintf(stderr, "bad numerical value %s\n", val);
979 x86_cpu_def->tsc_khz = tsc_freq / 1000;
980 } else if (!strcmp(featurestr, "hv_spinlocks")) {
982 numvalue = strtoul(val, &err, 0);
984 fprintf(stderr, "bad numerical value %s\n", val);
987 hyperv_set_spinlock_retries(numvalue);
989 fprintf(stderr, "unrecognized feature %s\n", featurestr);
992 } else if (!strcmp(featurestr, "check")) {
994 } else if (!strcmp(featurestr, "enforce")) {
995 check_cpuid = enforce_cpuid = 1;
996 } else if (!strcmp(featurestr, "hv_relaxed")) {
997 hyperv_enable_relaxed_timing(true);
998 } else if (!strcmp(featurestr, "hv_vapic")) {
999 hyperv_enable_vapic_recommended(true);
1001 fprintf(stderr, "feature string `%s' not in format (+feature|-feature|feature=xyz)\n", featurestr);
1004 featurestr = strtok(NULL, ",");
1006 x86_cpu_def->features |= plus_features;
1007 x86_cpu_def->ext_features |= plus_ext_features;
1008 x86_cpu_def->ext2_features |= plus_ext2_features;
1009 x86_cpu_def->ext3_features |= plus_ext3_features;
1010 x86_cpu_def->kvm_features |= plus_kvm_features;
1011 x86_cpu_def->svm_features |= plus_svm_features;
1012 x86_cpu_def->features &= ~minus_features;
1013 x86_cpu_def->ext_features &= ~minus_ext_features;
1014 x86_cpu_def->ext2_features &= ~minus_ext2_features;
1015 x86_cpu_def->ext3_features &= ~minus_ext3_features;
1016 x86_cpu_def->kvm_features &= ~minus_kvm_features;
1017 x86_cpu_def->svm_features &= ~minus_svm_features;
1019 if (check_features_against_host(x86_cpu_def) && enforce_cpuid)
1030 /* generate a composite string into buf of all cpuid names in featureset
1031 * selected by fbits. indicate truncation at bufsize in the event of overflow.
1032 * if flags, suppress names undefined in featureset.
1034 static void listflags(char *buf, int bufsize, uint32_t fbits,
1035 const char **featureset, uint32_t flags)
1037 const char **p = &featureset[31];
1041 b = 4 <= bufsize ? buf + (bufsize -= 3) - 1 : NULL;
1043 for (q = buf, bit = 31; fbits && bufsize; --p, fbits &= ~(1 << bit), --bit)
1044 if (fbits & 1 << bit && (*p || !flags)) {
1046 nc = snprintf(q, bufsize, "%s%s", q == buf ? "" : " ", *p);
1048 nc = snprintf(q, bufsize, "%s[%d]", q == buf ? "" : " ", bit);
1049 if (bufsize <= nc) {
1051 memcpy(b, "...", sizeof("..."));
1060 /* generate CPU information:
1061 * -? list model names
1062 * -?model list model names/IDs
1063 * -?dump output all model (x86_def_t) data
1064 * -?cpuid list all recognized cpuid flag names
1066 void x86_cpu_list(FILE *f, fprintf_function cpu_fprintf, const char *optarg)
1068 unsigned char model = !strcmp("?model", optarg);
1069 unsigned char dump = !strcmp("?dump", optarg);
1070 unsigned char cpuid = !strcmp("?cpuid", optarg);
1075 (*cpu_fprintf)(f, "Recognized CPUID flags:\n");
1076 listflags(buf, sizeof (buf), (uint32_t)~0, feature_name, 1);
1077 (*cpu_fprintf)(f, " f_edx: %s\n", buf);
1078 listflags(buf, sizeof (buf), (uint32_t)~0, ext_feature_name, 1);
1079 (*cpu_fprintf)(f, " f_ecx: %s\n", buf);
1080 listflags(buf, sizeof (buf), (uint32_t)~0, ext2_feature_name, 1);
1081 (*cpu_fprintf)(f, " extf_edx: %s\n", buf);
1082 listflags(buf, sizeof (buf), (uint32_t)~0, ext3_feature_name, 1);
1083 (*cpu_fprintf)(f, " extf_ecx: %s\n", buf);
1086 for (def = x86_defs; def; def = def->next) {
1087 snprintf(buf, sizeof (buf), def->flags ? "[%s]": "%s", def->name);
1088 if (model || dump) {
1089 (*cpu_fprintf)(f, "x86 %16s %-48s\n", buf, def->model_id);
1091 (*cpu_fprintf)(f, "x86 %16s\n", buf);
1094 memcpy(buf, &def->vendor1, sizeof (def->vendor1));
1095 memcpy(buf + 4, &def->vendor2, sizeof (def->vendor2));
1096 memcpy(buf + 8, &def->vendor3, sizeof (def->vendor3));
1099 " family %d model %d stepping %d level %d xlevel 0x%x"
1101 def->family, def->model, def->stepping, def->level,
1103 listflags(buf, sizeof (buf), def->features, feature_name, 0);
1104 (*cpu_fprintf)(f, " feature_edx %08x (%s)\n", def->features,
1106 listflags(buf, sizeof (buf), def->ext_features, ext_feature_name,
1108 (*cpu_fprintf)(f, " feature_ecx %08x (%s)\n", def->ext_features,
1110 listflags(buf, sizeof (buf), def->ext2_features, ext2_feature_name,
1112 (*cpu_fprintf)(f, " extfeature_edx %08x (%s)\n",
1113 def->ext2_features, buf);
1114 listflags(buf, sizeof (buf), def->ext3_features, ext3_feature_name,
1116 (*cpu_fprintf)(f, " extfeature_ecx %08x (%s)\n",
1117 def->ext3_features, buf);
1118 (*cpu_fprintf)(f, "\n");
1121 if (kvm_enabled()) {
1122 (*cpu_fprintf)(f, "x86 %16s\n", "[host]");
1126 int cpu_x86_register(X86CPU *cpu, const char *cpu_model)
1128 CPUX86State *env = &cpu->env;
1129 x86_def_t def1, *def = &def1;
1130 Error *error = NULL;
1132 memset(def, 0, sizeof(*def));
1134 if (cpu_x86_find_by_name(def, cpu_model) < 0)
1137 env->cpuid_vendor1 = def->vendor1;
1138 env->cpuid_vendor2 = def->vendor2;
1139 env->cpuid_vendor3 = def->vendor3;
1141 env->cpuid_vendor1 = CPUID_VENDOR_INTEL_1;
1142 env->cpuid_vendor2 = CPUID_VENDOR_INTEL_2;
1143 env->cpuid_vendor3 = CPUID_VENDOR_INTEL_3;
1145 env->cpuid_vendor_override = def->vendor_override;
1146 object_property_set_int(OBJECT(cpu), def->level, "level", &error);
1147 object_property_set_int(OBJECT(cpu), def->family, "family", &error);
1148 object_property_set_int(OBJECT(cpu), def->model, "model", &error);
1149 object_property_set_int(OBJECT(cpu), def->stepping, "stepping", &error);
1150 env->cpuid_features = def->features;
1151 env->cpuid_ext_features = def->ext_features;
1152 env->cpuid_ext2_features = def->ext2_features;
1153 env->cpuid_ext3_features = def->ext3_features;
1154 object_property_set_int(OBJECT(cpu), def->xlevel, "xlevel", &error);
1155 env->cpuid_kvm_features = def->kvm_features;
1156 env->cpuid_svm_features = def->svm_features;
1157 env->cpuid_ext4_features = def->ext4_features;
1158 env->cpuid_7_0_ebx = def->cpuid_7_0_ebx_features;
1159 env->cpuid_xlevel2 = def->xlevel2;
1160 object_property_set_int(OBJECT(cpu), (int64_t)def->tsc_khz * 1000,
1161 "tsc-frequency", &error);
1162 if (!kvm_enabled()) {
1163 env->cpuid_features &= TCG_FEATURES;
1164 env->cpuid_ext_features &= TCG_EXT_FEATURES;
1165 env->cpuid_ext2_features &= (TCG_EXT2_FEATURES
1166 #ifdef TARGET_X86_64
1167 | CPUID_EXT2_SYSCALL | CPUID_EXT2_LM
1170 env->cpuid_ext3_features &= TCG_EXT3_FEATURES;
1171 env->cpuid_svm_features &= TCG_SVM_FEATURES;
1173 object_property_set_str(OBJECT(cpu), def->model_id, "model-id", &error);
1174 if (error_is_set(&error)) {
1181 #if !defined(CONFIG_USER_ONLY)
1182 /* copy vendor id string to 32 bit register, nul pad as needed
1184 static void cpyid(const char *s, uint32_t *id)
1186 char *d = (char *)id;
1189 for (i = sizeof (*id); i--; )
1190 *d++ = *s ? *s++ : '\0';
1193 /* interpret radix and convert from string to arbitrary scalar,
1194 * otherwise flag failure
1196 #define setscalar(pval, str, perr) \
1201 ul = strtoul(str, &pend, 0); \
1202 *str && !*pend ? (*pval = ul) : (*perr = 1); \
1205 /* map cpuid options to feature bits, otherwise return failure
1206 * (option tags in *str are delimited by whitespace)
1208 static void setfeatures(uint32_t *pval, const char *str,
1209 const char **featureset, int *perr)
1213 for (q = p = str; *p || *q; q = p) {
1216 while (*p && !iswhite(*p))
1220 if (!lookup_feature(pval, q, p, featureset)) {
1221 fprintf(stderr, "error: feature \"%.*s\" not available in set\n",
1229 /* map config file options to x86_def_t form
1231 static int cpudef_setfield(const char *name, const char *str, void *opaque)
1233 x86_def_t *def = opaque;
1236 if (!strcmp(name, "name")) {
1237 g_free((void *)def->name);
1238 def->name = g_strdup(str);
1239 } else if (!strcmp(name, "model_id")) {
1240 strncpy(def->model_id, str, sizeof (def->model_id));
1241 } else if (!strcmp(name, "level")) {
1242 setscalar(&def->level, str, &err)
1243 } else if (!strcmp(name, "vendor")) {
1244 cpyid(&str[0], &def->vendor1);
1245 cpyid(&str[4], &def->vendor2);
1246 cpyid(&str[8], &def->vendor3);
1247 } else if (!strcmp(name, "family")) {
1248 setscalar(&def->family, str, &err)
1249 } else if (!strcmp(name, "model")) {
1250 setscalar(&def->model, str, &err)
1251 } else if (!strcmp(name, "stepping")) {
1252 setscalar(&def->stepping, str, &err)
1253 } else if (!strcmp(name, "feature_edx")) {
1254 setfeatures(&def->features, str, feature_name, &err);
1255 } else if (!strcmp(name, "feature_ecx")) {
1256 setfeatures(&def->ext_features, str, ext_feature_name, &err);
1257 } else if (!strcmp(name, "extfeature_edx")) {
1258 setfeatures(&def->ext2_features, str, ext2_feature_name, &err);
1259 } else if (!strcmp(name, "extfeature_ecx")) {
1260 setfeatures(&def->ext3_features, str, ext3_feature_name, &err);
1261 } else if (!strcmp(name, "xlevel")) {
1262 setscalar(&def->xlevel, str, &err)
1264 fprintf(stderr, "error: unknown option [%s = %s]\n", name, str);
1268 fprintf(stderr, "error: bad option value [%s = %s]\n", name, str);
1274 /* register config file entry as x86_def_t
1276 static int cpudef_register(QemuOpts *opts, void *opaque)
1278 x86_def_t *def = g_malloc0(sizeof (x86_def_t));
1280 qemu_opt_foreach(opts, cpudef_setfield, def, 1);
1281 def->next = x86_defs;
1286 void cpu_clear_apic_feature(CPUX86State *env)
1288 env->cpuid_features &= ~CPUID_APIC;
1291 #endif /* !CONFIG_USER_ONLY */
1293 /* register "cpudef" models defined in configuration file. Here we first
1294 * preload any built-in definitions
1296 void x86_cpudef_setup(void)
1299 static const char *model_with_versions[] = { "qemu32", "qemu64", "athlon" };
1301 for (i = 0; i < ARRAY_SIZE(builtin_x86_defs); ++i) {
1302 builtin_x86_defs[i].next = x86_defs;
1303 builtin_x86_defs[i].flags = 1;
1305 /* Look for specific "cpudef" models that */
1306 /* have the QEmu version in .model_id */
1307 for (j = 0; j < ARRAY_SIZE(model_with_versions); j++) {
1308 if (strcmp(model_with_versions[j], builtin_x86_defs[i].name) == 0) {
1309 pstrcpy(builtin_x86_defs[i].model_id, sizeof(builtin_x86_defs[i].model_id), "QEMU Virtual CPU version ");
1310 pstrcat(builtin_x86_defs[i].model_id, sizeof(builtin_x86_defs[i].model_id), qemu_get_version());
1315 x86_defs = &builtin_x86_defs[i];
1317 #if !defined(CONFIG_USER_ONLY)
1318 qemu_opts_foreach(qemu_find_opts("cpudef"), cpudef_register, NULL, 0);
1322 static void get_cpuid_vendor(CPUX86State *env, uint32_t *ebx,
1323 uint32_t *ecx, uint32_t *edx)
1325 *ebx = env->cpuid_vendor1;
1326 *edx = env->cpuid_vendor2;
1327 *ecx = env->cpuid_vendor3;
1329 /* sysenter isn't supported on compatibility mode on AMD, syscall
1330 * isn't supported in compatibility mode on Intel.
1331 * Normally we advertise the actual cpu vendor, but you can override
1332 * this if you want to use KVM's sysenter/syscall emulation
1333 * in compatibility mode and when doing cross vendor migration
1335 if (kvm_enabled() && ! env->cpuid_vendor_override) {
1336 host_cpuid(0, 0, NULL, ebx, ecx, edx);
1340 void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
1341 uint32_t *eax, uint32_t *ebx,
1342 uint32_t *ecx, uint32_t *edx)
1344 /* test if maximum index reached */
1345 if (index & 0x80000000) {
1346 if (index > env->cpuid_xlevel) {
1347 if (env->cpuid_xlevel2 > 0) {
1348 /* Handle the Centaur's CPUID instruction. */
1349 if (index > env->cpuid_xlevel2) {
1350 index = env->cpuid_xlevel2;
1351 } else if (index < 0xC0000000) {
1352 index = env->cpuid_xlevel;
1355 index = env->cpuid_xlevel;
1359 if (index > env->cpuid_level)
1360 index = env->cpuid_level;
1365 *eax = env->cpuid_level;
1366 get_cpuid_vendor(env, ebx, ecx, edx);
1369 *eax = env->cpuid_version;
1370 *ebx = (env->cpuid_apic_id << 24) | 8 << 8; /* CLFLUSH size in quad words, Linux wants it. */
1371 *ecx = env->cpuid_ext_features;
1372 *edx = env->cpuid_features;
1373 if (env->nr_cores * env->nr_threads > 1) {
1374 *ebx |= (env->nr_cores * env->nr_threads) << 16;
1375 *edx |= 1 << 28; /* HTT bit */
1379 /* cache info: needed for Pentium Pro compatibility */
1386 /* cache info: needed for Core compatibility */
1387 if (env->nr_cores > 1) {
1388 *eax = (env->nr_cores - 1) << 26;
1393 case 0: /* L1 dcache info */
1399 case 1: /* L1 icache info */
1405 case 2: /* L2 cache info */
1407 if (env->nr_threads > 1) {
1408 *eax |= (env->nr_threads - 1) << 14;
1414 default: /* end of info */
1423 /* mwait info: needed for Core compatibility */
1424 *eax = 0; /* Smallest monitor-line size in bytes */
1425 *ebx = 0; /* Largest monitor-line size in bytes */
1426 *ecx = CPUID_MWAIT_EMX | CPUID_MWAIT_IBE;
1430 /* Thermal and Power Leaf */
1437 /* Structured Extended Feature Flags Enumeration Leaf */
1439 *eax = 0; /* Maximum ECX value for sub-leaves */
1440 *ebx = env->cpuid_7_0_ebx; /* Feature flags */
1441 *ecx = 0; /* Reserved */
1442 *edx = 0; /* Reserved */
1451 /* Direct Cache Access Information Leaf */
1452 *eax = 0; /* Bits 0-31 in DCA_CAP MSR */
1458 /* Architectural Performance Monitoring Leaf */
1459 if (kvm_enabled()) {
1460 KVMState *s = env->kvm_state;
1462 *eax = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EAX);
1463 *ebx = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EBX);
1464 *ecx = kvm_arch_get_supported_cpuid(s, 0xA, count, R_ECX);
1465 *edx = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EDX);
1474 /* Processor Extended State */
1475 if (!(env->cpuid_ext_features & CPUID_EXT_XSAVE)) {
1482 if (kvm_enabled()) {
1483 KVMState *s = env->kvm_state;
1485 *eax = kvm_arch_get_supported_cpuid(s, 0xd, count, R_EAX);
1486 *ebx = kvm_arch_get_supported_cpuid(s, 0xd, count, R_EBX);
1487 *ecx = kvm_arch_get_supported_cpuid(s, 0xd, count, R_ECX);
1488 *edx = kvm_arch_get_supported_cpuid(s, 0xd, count, R_EDX);
1497 *eax = env->cpuid_xlevel;
1498 *ebx = env->cpuid_vendor1;
1499 *edx = env->cpuid_vendor2;
1500 *ecx = env->cpuid_vendor3;
1503 *eax = env->cpuid_version;
1505 *ecx = env->cpuid_ext3_features;
1506 *edx = env->cpuid_ext2_features;
1508 /* The Linux kernel checks for the CMPLegacy bit and
1509 * discards multiple thread information if it is set.
1510 * So dont set it here for Intel to make Linux guests happy.
1512 if (env->nr_cores * env->nr_threads > 1) {
1513 uint32_t tebx, tecx, tedx;
1514 get_cpuid_vendor(env, &tebx, &tecx, &tedx);
1515 if (tebx != CPUID_VENDOR_INTEL_1 ||
1516 tedx != CPUID_VENDOR_INTEL_2 ||
1517 tecx != CPUID_VENDOR_INTEL_3) {
1518 *ecx |= 1 << 1; /* CmpLegacy bit */
1525 *eax = env->cpuid_model[(index - 0x80000002) * 4 + 0];
1526 *ebx = env->cpuid_model[(index - 0x80000002) * 4 + 1];
1527 *ecx = env->cpuid_model[(index - 0x80000002) * 4 + 2];
1528 *edx = env->cpuid_model[(index - 0x80000002) * 4 + 3];
1531 /* cache info (L1 cache) */
1538 /* cache info (L2 cache) */
1545 /* virtual & phys address size in low 2 bytes. */
1546 /* XXX: This value must match the one used in the MMU code. */
1547 if (env->cpuid_ext2_features & CPUID_EXT2_LM) {
1548 /* 64 bit processor */
1549 /* XXX: The physical address space is limited to 42 bits in exec.c. */
1550 *eax = 0x00003028; /* 48 bits virtual, 40 bits physical */
1552 if (env->cpuid_features & CPUID_PSE36)
1553 *eax = 0x00000024; /* 36 bits physical */
1555 *eax = 0x00000020; /* 32 bits physical */
1560 if (env->nr_cores * env->nr_threads > 1) {
1561 *ecx |= (env->nr_cores * env->nr_threads) - 1;
1565 if (env->cpuid_ext3_features & CPUID_EXT3_SVM) {
1566 *eax = 0x00000001; /* SVM Revision */
1567 *ebx = 0x00000010; /* nr of ASIDs */
1569 *edx = env->cpuid_svm_features; /* optional features */
1578 *eax = env->cpuid_xlevel2;
1584 /* Support for VIA CPU's CPUID instruction */
1585 *eax = env->cpuid_version;
1588 *edx = env->cpuid_ext4_features;
1593 /* Reserved for the future, and now filled with zero */
1600 /* reserved values: zero */
1609 /* CPUClass::reset() */
1610 static void x86_cpu_reset(CPUState *s)
1612 X86CPU *cpu = X86_CPU(s);
1613 X86CPUClass *xcc = X86_CPU_GET_CLASS(cpu);
1614 CPUX86State *env = &cpu->env;
1617 if (qemu_loglevel_mask(CPU_LOG_RESET)) {
1618 qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
1619 log_cpu_state(env, X86_DUMP_FPU | X86_DUMP_CCOP);
1622 xcc->parent_reset(s);
1625 memset(env, 0, offsetof(CPUX86State, breakpoints));
1629 env->old_exception = -1;
1631 /* init to reset state */
1633 #ifdef CONFIG_SOFTMMU
1634 env->hflags |= HF_SOFTMMU_MASK;
1636 env->hflags2 |= HF2_GIF_MASK;
1638 cpu_x86_update_cr0(env, 0x60000010);
1639 env->a20_mask = ~0x0;
1640 env->smbase = 0x30000;
1642 env->idt.limit = 0xffff;
1643 env->gdt.limit = 0xffff;
1644 env->ldt.limit = 0xffff;
1645 env->ldt.flags = DESC_P_MASK | (2 << DESC_TYPE_SHIFT);
1646 env->tr.limit = 0xffff;
1647 env->tr.flags = DESC_P_MASK | (11 << DESC_TYPE_SHIFT);
1649 cpu_x86_load_seg_cache(env, R_CS, 0xf000, 0xffff0000, 0xffff,
1650 DESC_P_MASK | DESC_S_MASK | DESC_CS_MASK |
1651 DESC_R_MASK | DESC_A_MASK);
1652 cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffff,
1653 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
1655 cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffff,
1656 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
1658 cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffff,
1659 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
1661 cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffff,
1662 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
1664 cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffff,
1665 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
1669 env->regs[R_EDX] = env->cpuid_version;
1674 for (i = 0; i < 8; i++) {
1679 env->mxcsr = 0x1f80;
1681 env->pat = 0x0007040600070406ULL;
1682 env->msr_ia32_misc_enable = MSR_IA32_MISC_ENABLE_DEFAULT;
1684 memset(env->dr, 0, sizeof(env->dr));
1685 env->dr[6] = DR6_FIXED_1;
1686 env->dr[7] = DR7_FIXED_1;
1687 cpu_breakpoint_remove_all(env, BP_CPU);
1688 cpu_watchpoint_remove_all(env, BP_CPU);
1691 static void mce_init(X86CPU *cpu)
1693 CPUX86State *cenv = &cpu->env;
1696 if (((cenv->cpuid_version >> 8) & 0xf) >= 6
1697 && (cenv->cpuid_features & (CPUID_MCE | CPUID_MCA)) ==
1698 (CPUID_MCE | CPUID_MCA)) {
1699 cenv->mcg_cap = MCE_CAP_DEF | MCE_BANKS_DEF;
1700 cenv->mcg_ctl = ~(uint64_t)0;
1701 for (bank = 0; bank < MCE_BANKS_DEF; bank++) {
1702 cenv->mce_banks[bank * 4] = ~(uint64_t)0;
1707 void x86_cpu_realize(Object *obj, Error **errp)
1709 X86CPU *cpu = X86_CPU(obj);
1712 qemu_init_vcpu(&cpu->env);
1715 static void x86_cpu_initfn(Object *obj)
1717 X86CPU *cpu = X86_CPU(obj);
1718 CPUX86State *env = &cpu->env;
1723 object_property_add(obj, "family", "int",
1724 x86_cpuid_version_get_family,
1725 x86_cpuid_version_set_family, NULL, NULL, NULL);
1726 object_property_add(obj, "model", "int",
1727 x86_cpuid_version_get_model,
1728 x86_cpuid_version_set_model, NULL, NULL, NULL);
1729 object_property_add(obj, "stepping", "int",
1730 x86_cpuid_version_get_stepping,
1731 x86_cpuid_version_set_stepping, NULL, NULL, NULL);
1732 object_property_add(obj, "level", "int",
1733 x86_cpuid_get_level,
1734 x86_cpuid_set_level, NULL, NULL, NULL);
1735 object_property_add(obj, "xlevel", "int",
1736 x86_cpuid_get_xlevel,
1737 x86_cpuid_set_xlevel, NULL, NULL, NULL);
1738 object_property_add_str(obj, "vendor",
1739 x86_cpuid_get_vendor,
1740 x86_cpuid_set_vendor, NULL);
1741 object_property_add_str(obj, "model-id",
1742 x86_cpuid_get_model_id,
1743 x86_cpuid_set_model_id, NULL);
1744 object_property_add(obj, "tsc-frequency", "int",
1745 x86_cpuid_get_tsc_freq,
1746 x86_cpuid_set_tsc_freq, NULL, NULL, NULL);
1748 env->cpuid_apic_id = env->cpu_index;
1750 /* init various static tables used in TCG mode */
1751 if (tcg_enabled() && !inited) {
1753 optimize_flags_init();
1754 #ifndef CONFIG_USER_ONLY
1755 cpu_set_debug_excp_handler(breakpoint_handler);
1760 static void x86_cpu_common_class_init(ObjectClass *oc, void *data)
1762 X86CPUClass *xcc = X86_CPU_CLASS(oc);
1763 CPUClass *cc = CPU_CLASS(oc);
1765 xcc->parent_reset = cc->reset;
1766 cc->reset = x86_cpu_reset;
1769 static const TypeInfo x86_cpu_type_info = {
1770 .name = TYPE_X86_CPU,
1772 .instance_size = sizeof(X86CPU),
1773 .instance_init = x86_cpu_initfn,
1775 .class_size = sizeof(X86CPUClass),
1776 .class_init = x86_cpu_common_class_init,
1779 static void x86_cpu_register_types(void)
1781 type_register_static(&x86_cpu_type_info);
1784 type_init(x86_cpu_register_types)