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;
243 #define I486_FEATURES (CPUID_FP87 | CPUID_VME | CPUID_PSE)
244 #define PENTIUM_FEATURES (I486_FEATURES | CPUID_DE | CPUID_TSC | \
245 CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_MMX | CPUID_APIC)
246 #define PENTIUM2_FEATURES (PENTIUM_FEATURES | CPUID_PAE | CPUID_SEP | \
247 CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \
248 CPUID_PSE36 | CPUID_FXSR)
249 #define PENTIUM3_FEATURES (PENTIUM2_FEATURES | CPUID_SSE)
250 #define PPRO_FEATURES (CPUID_FP87 | CPUID_DE | CPUID_PSE | CPUID_TSC | \
251 CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_PGE | CPUID_CMOV | \
252 CPUID_PAT | CPUID_FXSR | CPUID_MMX | CPUID_SSE | CPUID_SSE2 | \
253 CPUID_PAE | CPUID_SEP | CPUID_APIC)
254 #define EXT2_FEATURE_MASK 0x0183F3FF
256 #define TCG_FEATURES (CPUID_FP87 | CPUID_PSE | CPUID_TSC | CPUID_MSR | \
257 CPUID_PAE | CPUID_MCE | CPUID_CX8 | CPUID_APIC | CPUID_SEP | \
258 CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \
259 CPUID_PSE36 | CPUID_CLFLUSH | CPUID_ACPI | CPUID_MMX | \
260 CPUID_FXSR | CPUID_SSE | CPUID_SSE2 | CPUID_SS)
261 /* partly implemented:
262 CPUID_MTRR, CPUID_MCA, CPUID_CLFLUSH (needed for Win64)
263 CPUID_PSE36 (needed for Solaris) */
265 CPUID_VME, CPUID_DTS, CPUID_SS, CPUID_HT, CPUID_TM, CPUID_PBE */
266 #define TCG_EXT_FEATURES (CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | \
267 CPUID_EXT_CX16 | CPUID_EXT_POPCNT | \
268 CPUID_EXT_HYPERVISOR)
270 CPUID_EXT_DTES64, CPUID_EXT_DSCPL, CPUID_EXT_VMX, CPUID_EXT_EST,
271 CPUID_EXT_TM2, CPUID_EXT_XTPR, CPUID_EXT_PDCM, CPUID_EXT_XSAVE */
272 #define TCG_EXT2_FEATURES ((TCG_FEATURES & EXT2_FEATURE_MASK) | \
273 CPUID_EXT2_NX | CPUID_EXT2_MMXEXT | CPUID_EXT2_RDTSCP | \
274 CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT)
276 CPUID_EXT2_PDPE1GB */
277 #define TCG_EXT3_FEATURES (CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | \
278 CPUID_EXT3_CR8LEG | CPUID_EXT3_ABM | CPUID_EXT3_SSE4A)
279 #define TCG_SVM_FEATURES 0
281 /* maintains list of cpu model definitions
283 static x86_def_t *x86_defs = {NULL};
285 /* built-in cpu model definitions (deprecated)
287 static x86_def_t builtin_x86_defs[] = {
291 .vendor1 = CPUID_VENDOR_AMD_1,
292 .vendor2 = CPUID_VENDOR_AMD_2,
293 .vendor3 = CPUID_VENDOR_AMD_3,
297 .features = PPRO_FEATURES |
298 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
300 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_CX16 | CPUID_EXT_POPCNT,
301 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) |
302 CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
303 .ext3_features = CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM |
304 CPUID_EXT3_ABM | CPUID_EXT3_SSE4A,
305 .xlevel = 0x8000000A,
306 .model_id = "QEMU Virtual CPU version " QEMU_VERSION,
311 .vendor1 = CPUID_VENDOR_AMD_1,
312 .vendor2 = CPUID_VENDOR_AMD_2,
313 .vendor3 = CPUID_VENDOR_AMD_3,
317 .features = PPRO_FEATURES |
318 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
319 CPUID_PSE36 | CPUID_VME | CPUID_HT,
320 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_CX16 |
322 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) |
323 CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX |
324 CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT | CPUID_EXT2_MMXEXT |
325 CPUID_EXT2_FFXSR | CPUID_EXT2_PDPE1GB | CPUID_EXT2_RDTSCP,
326 /* Missing: CPUID_EXT3_CMP_LEG, CPUID_EXT3_EXTAPIC,
328 CPUID_EXT3_MISALIGNSSE, CPUID_EXT3_3DNOWPREFETCH,
329 CPUID_EXT3_OSVW, CPUID_EXT3_IBS */
330 .ext3_features = CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM |
331 CPUID_EXT3_ABM | CPUID_EXT3_SSE4A,
332 .svm_features = CPUID_SVM_NPT | CPUID_SVM_LBRV,
333 .xlevel = 0x8000001A,
334 .model_id = "AMD Phenom(tm) 9550 Quad-Core Processor"
342 .features = PPRO_FEATURES |
343 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
344 CPUID_PSE36 | CPUID_VME | CPUID_DTS | CPUID_ACPI | CPUID_SS |
345 CPUID_HT | CPUID_TM | CPUID_PBE,
346 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 |
347 CPUID_EXT_DTES64 | CPUID_EXT_DSCPL | CPUID_EXT_VMX | CPUID_EXT_EST |
348 CPUID_EXT_TM2 | CPUID_EXT_CX16 | CPUID_EXT_XTPR | CPUID_EXT_PDCM,
349 .ext2_features = CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
350 .ext3_features = CPUID_EXT3_LAHF_LM,
351 .xlevel = 0x80000008,
352 .model_id = "Intel(R) Core(TM)2 Duo CPU T7700 @ 2.40GHz",
357 .vendor1 = CPUID_VENDOR_INTEL_1,
358 .vendor2 = CPUID_VENDOR_INTEL_2,
359 .vendor3 = CPUID_VENDOR_INTEL_3,
363 /* Missing: CPUID_VME, CPUID_HT */
364 .features = PPRO_FEATURES |
365 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
367 /* Missing: CPUID_EXT_POPCNT, CPUID_EXT_MONITOR */
368 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_CX16,
369 /* Missing: CPUID_EXT2_PDPE1GB, CPUID_EXT2_RDTSCP */
370 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) |
371 CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
372 /* Missing: CPUID_EXT3_LAHF_LM, CPUID_EXT3_CMP_LEG, CPUID_EXT3_EXTAPIC,
373 CPUID_EXT3_CR8LEG, CPUID_EXT3_ABM, CPUID_EXT3_SSE4A,
374 CPUID_EXT3_MISALIGNSSE, CPUID_EXT3_3DNOWPREFETCH,
375 CPUID_EXT3_OSVW, CPUID_EXT3_IBS, CPUID_EXT3_SVM */
377 .xlevel = 0x80000008,
378 .model_id = "Common KVM processor"
386 .features = PPRO_FEATURES,
387 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_POPCNT,
388 .xlevel = 0x80000004,
389 .model_id = "QEMU Virtual CPU version " QEMU_VERSION,
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,
468 /* XXX: put another string ? */
469 .model_id = "QEMU Virtual CPU version " QEMU_VERSION,
473 /* original is on level 10 */
478 .features = PPRO_FEATURES |
479 CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_VME | CPUID_DTS |
480 CPUID_ACPI | CPUID_SS | CPUID_HT | CPUID_TM | CPUID_PBE,
481 /* Some CPUs got no CPUID_SEP */
482 .ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 |
483 CPUID_EXT_DSCPL | CPUID_EXT_EST | CPUID_EXT_TM2 | CPUID_EXT_XTPR,
484 .ext2_features = (PPRO_FEATURES & EXT2_FEATURE_MASK) | CPUID_EXT2_NX,
485 .ext3_features = CPUID_EXT3_LAHF_LM,
486 .xlevel = 0x8000000A,
487 .model_id = "Intel(R) Atom(TM) CPU N270 @ 1.60GHz",
491 static int cpu_x86_fill_model_id(char *str)
493 uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
496 for (i = 0; i < 3; i++) {
497 host_cpuid(0x80000002 + i, 0, &eax, &ebx, &ecx, &edx);
498 memcpy(str + i * 16 + 0, &eax, 4);
499 memcpy(str + i * 16 + 4, &ebx, 4);
500 memcpy(str + i * 16 + 8, &ecx, 4);
501 memcpy(str + i * 16 + 12, &edx, 4);
506 static int cpu_x86_fill_host(x86_def_t *x86_cpu_def)
508 uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
510 x86_cpu_def->name = "host";
511 host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx);
512 x86_cpu_def->level = eax;
513 x86_cpu_def->vendor1 = ebx;
514 x86_cpu_def->vendor2 = edx;
515 x86_cpu_def->vendor3 = ecx;
517 host_cpuid(0x1, 0, &eax, &ebx, &ecx, &edx);
518 x86_cpu_def->family = ((eax >> 8) & 0x0F) + ((eax >> 20) & 0xFF);
519 x86_cpu_def->model = ((eax >> 4) & 0x0F) | ((eax & 0xF0000) >> 12);
520 x86_cpu_def->stepping = eax & 0x0F;
521 x86_cpu_def->ext_features = ecx;
522 x86_cpu_def->features = edx;
524 host_cpuid(0x80000000, 0, &eax, &ebx, &ecx, &edx);
525 x86_cpu_def->xlevel = eax;
527 host_cpuid(0x80000001, 0, &eax, &ebx, &ecx, &edx);
528 x86_cpu_def->ext2_features = edx;
529 x86_cpu_def->ext3_features = ecx;
530 cpu_x86_fill_model_id(x86_cpu_def->model_id);
531 x86_cpu_def->vendor_override = 0;
533 /* Call Centaur's CPUID instruction. */
534 if (x86_cpu_def->vendor1 == CPUID_VENDOR_VIA_1 &&
535 x86_cpu_def->vendor2 == CPUID_VENDOR_VIA_2 &&
536 x86_cpu_def->vendor3 == CPUID_VENDOR_VIA_3) {
537 host_cpuid(0xC0000000, 0, &eax, &ebx, &ecx, &edx);
538 if (eax >= 0xC0000001) {
539 /* Support VIA max extended level */
540 x86_cpu_def->xlevel2 = eax;
541 host_cpuid(0xC0000001, 0, &eax, &ebx, &ecx, &edx);
542 x86_cpu_def->ext4_features = edx;
547 * Every SVM feature requires emulation support in KVM - so we can't just
548 * read the host features here. KVM might even support SVM features not
549 * available on the host hardware. Just set all bits and mask out the
550 * unsupported ones later.
552 x86_cpu_def->svm_features = -1;
557 static int unavailable_host_feature(struct model_features_t *f, uint32_t mask)
561 for (i = 0; i < 32; ++i)
563 fprintf(stderr, "warning: host cpuid %04x_%04x lacks requested"
564 " flag '%s' [0x%08x]\n",
565 f->cpuid >> 16, f->cpuid & 0xffff,
566 f->flag_names[i] ? f->flag_names[i] : "[reserved]", mask);
572 /* best effort attempt to inform user requested cpu flags aren't making
573 * their way to the guest. Note: ft[].check_feat ideally should be
574 * specified via a guest_def field to suppress report of extraneous flags.
576 static int check_features_against_host(x86_def_t *guest_def)
581 struct model_features_t ft[] = {
582 {&guest_def->features, &host_def.features,
583 ~0, feature_name, 0x00000000},
584 {&guest_def->ext_features, &host_def.ext_features,
585 ~CPUID_EXT_HYPERVISOR, ext_feature_name, 0x00000001},
586 {&guest_def->ext2_features, &host_def.ext2_features,
587 ~PPRO_FEATURES, ext2_feature_name, 0x80000000},
588 {&guest_def->ext3_features, &host_def.ext3_features,
589 ~CPUID_EXT3_SVM, ext3_feature_name, 0x80000001}};
591 cpu_x86_fill_host(&host_def);
592 for (rv = 0, i = 0; i < ARRAY_SIZE(ft); ++i)
593 for (mask = 1; mask; mask <<= 1)
594 if (ft[i].check_feat & mask && *ft[i].guest_feat & mask &&
595 !(*ft[i].host_feat & mask)) {
596 unavailable_host_feature(&ft[i], mask);
602 static void x86_cpuid_version_get_family(Object *obj, Visitor *v, void *opaque,
603 const char *name, Error **errp)
605 X86CPU *cpu = X86_CPU(obj);
606 CPUX86State *env = &cpu->env;
609 value = (env->cpuid_version >> 8) & 0xf;
611 value += (env->cpuid_version >> 20) & 0xff;
613 visit_type_int(v, &value, name, errp);
616 static void x86_cpuid_version_set_family(Object *obj, Visitor *v, void *opaque,
617 const char *name, Error **errp)
619 X86CPU *cpu = X86_CPU(obj);
620 CPUX86State *env = &cpu->env;
621 const int64_t min = 0;
622 const int64_t max = 0xff + 0xf;
625 visit_type_int(v, &value, name, errp);
626 if (error_is_set(errp)) {
629 if (value < min || value > max) {
630 error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
631 name ? name : "null", value, min, max);
635 env->cpuid_version &= ~0xff00f00;
637 env->cpuid_version |= 0xf00 | ((value - 0x0f) << 20);
639 env->cpuid_version |= value << 8;
643 static void x86_cpuid_version_get_model(Object *obj, Visitor *v, void *opaque,
644 const char *name, Error **errp)
646 X86CPU *cpu = X86_CPU(obj);
647 CPUX86State *env = &cpu->env;
650 value = (env->cpuid_version >> 4) & 0xf;
651 value |= ((env->cpuid_version >> 16) & 0xf) << 4;
652 visit_type_int(v, &value, name, errp);
655 static void x86_cpuid_version_set_model(Object *obj, Visitor *v, void *opaque,
656 const char *name, Error **errp)
658 X86CPU *cpu = X86_CPU(obj);
659 CPUX86State *env = &cpu->env;
660 const int64_t min = 0;
661 const int64_t max = 0xff;
664 visit_type_int(v, &value, name, errp);
665 if (error_is_set(errp)) {
668 if (value < min || value > max) {
669 error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
670 name ? name : "null", value, min, max);
674 env->cpuid_version &= ~0xf00f0;
675 env->cpuid_version |= ((value & 0xf) << 4) | ((value >> 4) << 16);
678 static void x86_cpuid_version_get_stepping(Object *obj, Visitor *v,
679 void *opaque, const char *name,
682 X86CPU *cpu = X86_CPU(obj);
683 CPUX86State *env = &cpu->env;
686 value = env->cpuid_version & 0xf;
687 visit_type_int(v, &value, name, errp);
690 static void x86_cpuid_version_set_stepping(Object *obj, Visitor *v,
691 void *opaque, const char *name,
694 X86CPU *cpu = X86_CPU(obj);
695 CPUX86State *env = &cpu->env;
696 const int64_t min = 0;
697 const int64_t max = 0xf;
700 visit_type_int(v, &value, name, errp);
701 if (error_is_set(errp)) {
704 if (value < min || value > max) {
705 error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
706 name ? name : "null", value, min, max);
710 env->cpuid_version &= ~0xf;
711 env->cpuid_version |= value & 0xf;
714 static void x86_cpuid_get_level(Object *obj, Visitor *v, void *opaque,
715 const char *name, Error **errp)
717 X86CPU *cpu = X86_CPU(obj);
720 value = cpu->env.cpuid_level;
721 /* TODO Use visit_type_uint32() once available */
722 visit_type_int(v, &value, name, errp);
725 static void x86_cpuid_set_level(Object *obj, Visitor *v, void *opaque,
726 const char *name, Error **errp)
728 X86CPU *cpu = X86_CPU(obj);
729 const int64_t min = 0;
730 const int64_t max = UINT32_MAX;
733 /* TODO Use visit_type_uint32() once available */
734 visit_type_int(v, &value, name, errp);
735 if (error_is_set(errp)) {
738 if (value < min || value > max) {
739 error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
740 name ? name : "null", value, min, max);
744 cpu->env.cpuid_level = value;
747 static void x86_cpuid_get_xlevel(Object *obj, Visitor *v, void *opaque,
748 const char *name, Error **errp)
750 X86CPU *cpu = X86_CPU(obj);
753 value = cpu->env.cpuid_xlevel;
754 /* TODO Use visit_type_uint32() once available */
755 visit_type_int(v, &value, name, errp);
758 static void x86_cpuid_set_xlevel(Object *obj, Visitor *v, void *opaque,
759 const char *name, Error **errp)
761 X86CPU *cpu = X86_CPU(obj);
762 const int64_t min = 0;
763 const int64_t max = UINT32_MAX;
766 /* TODO Use visit_type_uint32() once available */
767 visit_type_int(v, &value, name, errp);
768 if (error_is_set(errp)) {
771 if (value < min || value > max) {
772 error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
773 name ? name : "null", value, min, max);
777 cpu->env.cpuid_xlevel = value;
780 static char *x86_cpuid_get_vendor(Object *obj, Error **errp)
782 X86CPU *cpu = X86_CPU(obj);
783 CPUX86State *env = &cpu->env;
787 value = (char *)g_malloc(12 + 1);
788 for (i = 0; i < 4; i++) {
789 value[i ] = env->cpuid_vendor1 >> (8 * i);
790 value[i + 4] = env->cpuid_vendor2 >> (8 * i);
791 value[i + 8] = env->cpuid_vendor3 >> (8 * i);
797 static void x86_cpuid_set_vendor(Object *obj, const char *value,
800 X86CPU *cpu = X86_CPU(obj);
801 CPUX86State *env = &cpu->env;
804 if (strlen(value) != 12) {
805 error_set(errp, QERR_PROPERTY_VALUE_BAD, "",
810 env->cpuid_vendor1 = 0;
811 env->cpuid_vendor2 = 0;
812 env->cpuid_vendor3 = 0;
813 for (i = 0; i < 4; i++) {
814 env->cpuid_vendor1 |= ((uint8_t)value[i ]) << (8 * i);
815 env->cpuid_vendor2 |= ((uint8_t)value[i + 4]) << (8 * i);
816 env->cpuid_vendor3 |= ((uint8_t)value[i + 8]) << (8 * i);
818 env->cpuid_vendor_override = 1;
821 static char *x86_cpuid_get_model_id(Object *obj, Error **errp)
823 X86CPU *cpu = X86_CPU(obj);
824 CPUX86State *env = &cpu->env;
828 value = g_malloc(48 + 1);
829 for (i = 0; i < 48; i++) {
830 value[i] = env->cpuid_model[i >> 2] >> (8 * (i & 3));
836 static void x86_cpuid_set_model_id(Object *obj, const char *model_id,
839 X86CPU *cpu = X86_CPU(obj);
840 CPUX86State *env = &cpu->env;
843 if (model_id == NULL) {
846 len = strlen(model_id);
847 memset(env->cpuid_model, 0, 48);
848 for (i = 0; i < 48; i++) {
852 c = (uint8_t)model_id[i];
854 env->cpuid_model[i >> 2] |= c << (8 * (i & 3));
858 static void x86_cpuid_get_tsc_freq(Object *obj, Visitor *v, void *opaque,
859 const char *name, Error **errp)
861 X86CPU *cpu = X86_CPU(obj);
864 value = cpu->env.tsc_khz * 1000;
865 visit_type_int(v, &value, name, errp);
868 static void x86_cpuid_set_tsc_freq(Object *obj, Visitor *v, void *opaque,
869 const char *name, Error **errp)
871 X86CPU *cpu = X86_CPU(obj);
872 const int64_t min = 0;
873 const int64_t max = INT_MAX;
876 visit_type_int(v, &value, name, errp);
877 if (error_is_set(errp)) {
880 if (value < min || value > max) {
881 error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
882 name ? name : "null", value, min, max);
886 cpu->env.tsc_khz = value / 1000;
889 static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *cpu_model)
894 char *s = g_strdup(cpu_model);
895 char *featurestr, *name = strtok(s, ",");
896 /* Features to be added*/
897 uint32_t plus_features = 0, plus_ext_features = 0;
898 uint32_t plus_ext2_features = 0, plus_ext3_features = 0;
899 uint32_t plus_kvm_features = 0, plus_svm_features = 0;
900 /* Features to be removed */
901 uint32_t minus_features = 0, minus_ext_features = 0;
902 uint32_t minus_ext2_features = 0, minus_ext3_features = 0;
903 uint32_t minus_kvm_features = 0, minus_svm_features = 0;
906 for (def = x86_defs; def; def = def->next)
907 if (name && !strcmp(name, def->name))
909 if (kvm_enabled() && name && strcmp(name, "host") == 0) {
910 cpu_x86_fill_host(x86_cpu_def);
914 memcpy(x86_cpu_def, def, sizeof(*def));
917 plus_kvm_features = ~0; /* not supported bits will be filtered out later */
919 add_flagname_to_bitmaps("hypervisor", &plus_features,
920 &plus_ext_features, &plus_ext2_features, &plus_ext3_features,
921 &plus_kvm_features, &plus_svm_features);
923 featurestr = strtok(NULL, ",");
927 if (featurestr[0] == '+') {
928 add_flagname_to_bitmaps(featurestr + 1, &plus_features,
929 &plus_ext_features, &plus_ext2_features,
930 &plus_ext3_features, &plus_kvm_features,
932 } else if (featurestr[0] == '-') {
933 add_flagname_to_bitmaps(featurestr + 1, &minus_features,
934 &minus_ext_features, &minus_ext2_features,
935 &minus_ext3_features, &minus_kvm_features,
936 &minus_svm_features);
937 } else if ((val = strchr(featurestr, '='))) {
939 if (!strcmp(featurestr, "family")) {
941 numvalue = strtoul(val, &err, 0);
942 if (!*val || *err || numvalue > 0xff + 0xf) {
943 fprintf(stderr, "bad numerical value %s\n", val);
946 x86_cpu_def->family = numvalue;
947 } else if (!strcmp(featurestr, "model")) {
949 numvalue = strtoul(val, &err, 0);
950 if (!*val || *err || numvalue > 0xff) {
951 fprintf(stderr, "bad numerical value %s\n", val);
954 x86_cpu_def->model = numvalue;
955 } else if (!strcmp(featurestr, "stepping")) {
957 numvalue = strtoul(val, &err, 0);
958 if (!*val || *err || numvalue > 0xf) {
959 fprintf(stderr, "bad numerical value %s\n", val);
962 x86_cpu_def->stepping = numvalue ;
963 } else if (!strcmp(featurestr, "level")) {
965 numvalue = strtoul(val, &err, 0);
967 fprintf(stderr, "bad numerical value %s\n", val);
970 x86_cpu_def->level = numvalue;
971 } else if (!strcmp(featurestr, "xlevel")) {
973 numvalue = strtoul(val, &err, 0);
975 fprintf(stderr, "bad numerical value %s\n", val);
978 if (numvalue < 0x80000000) {
979 numvalue += 0x80000000;
981 x86_cpu_def->xlevel = numvalue;
982 } else if (!strcmp(featurestr, "vendor")) {
983 if (strlen(val) != 12) {
984 fprintf(stderr, "vendor string must be 12 chars long\n");
987 x86_cpu_def->vendor1 = 0;
988 x86_cpu_def->vendor2 = 0;
989 x86_cpu_def->vendor3 = 0;
990 for(i = 0; i < 4; i++) {
991 x86_cpu_def->vendor1 |= ((uint8_t)val[i ]) << (8 * i);
992 x86_cpu_def->vendor2 |= ((uint8_t)val[i + 4]) << (8 * i);
993 x86_cpu_def->vendor3 |= ((uint8_t)val[i + 8]) << (8 * i);
995 x86_cpu_def->vendor_override = 1;
996 } else if (!strcmp(featurestr, "model_id")) {
997 pstrcpy(x86_cpu_def->model_id, sizeof(x86_cpu_def->model_id),
999 } else if (!strcmp(featurestr, "tsc_freq")) {
1003 tsc_freq = strtosz_suffix_unit(val, &err,
1004 STRTOSZ_DEFSUFFIX_B, 1000);
1005 if (tsc_freq < 0 || *err) {
1006 fprintf(stderr, "bad numerical value %s\n", val);
1009 x86_cpu_def->tsc_khz = tsc_freq / 1000;
1010 } else if (!strcmp(featurestr, "hv_spinlocks")) {
1012 numvalue = strtoul(val, &err, 0);
1013 if (!*val || *err) {
1014 fprintf(stderr, "bad numerical value %s\n", val);
1017 hyperv_set_spinlock_retries(numvalue);
1019 fprintf(stderr, "unrecognized feature %s\n", featurestr);
1022 } else if (!strcmp(featurestr, "check")) {
1024 } else if (!strcmp(featurestr, "enforce")) {
1025 check_cpuid = enforce_cpuid = 1;
1026 } else if (!strcmp(featurestr, "hv_relaxed")) {
1027 hyperv_enable_relaxed_timing(true);
1028 } else if (!strcmp(featurestr, "hv_vapic")) {
1029 hyperv_enable_vapic_recommended(true);
1031 fprintf(stderr, "feature string `%s' not in format (+feature|-feature|feature=xyz)\n", featurestr);
1034 featurestr = strtok(NULL, ",");
1036 x86_cpu_def->features |= plus_features;
1037 x86_cpu_def->ext_features |= plus_ext_features;
1038 x86_cpu_def->ext2_features |= plus_ext2_features;
1039 x86_cpu_def->ext3_features |= plus_ext3_features;
1040 x86_cpu_def->kvm_features |= plus_kvm_features;
1041 x86_cpu_def->svm_features |= plus_svm_features;
1042 x86_cpu_def->features &= ~minus_features;
1043 x86_cpu_def->ext_features &= ~minus_ext_features;
1044 x86_cpu_def->ext2_features &= ~minus_ext2_features;
1045 x86_cpu_def->ext3_features &= ~minus_ext3_features;
1046 x86_cpu_def->kvm_features &= ~minus_kvm_features;
1047 x86_cpu_def->svm_features &= ~minus_svm_features;
1049 if (check_features_against_host(x86_cpu_def) && enforce_cpuid)
1060 /* generate a composite string into buf of all cpuid names in featureset
1061 * selected by fbits. indicate truncation at bufsize in the event of overflow.
1062 * if flags, suppress names undefined in featureset.
1064 static void listflags(char *buf, int bufsize, uint32_t fbits,
1065 const char **featureset, uint32_t flags)
1067 const char **p = &featureset[31];
1071 b = 4 <= bufsize ? buf + (bufsize -= 3) - 1 : NULL;
1073 for (q = buf, bit = 31; fbits && bufsize; --p, fbits &= ~(1 << bit), --bit)
1074 if (fbits & 1 << bit && (*p || !flags)) {
1076 nc = snprintf(q, bufsize, "%s%s", q == buf ? "" : " ", *p);
1078 nc = snprintf(q, bufsize, "%s[%d]", q == buf ? "" : " ", bit);
1079 if (bufsize <= nc) {
1081 memcpy(b, "...", sizeof("..."));
1090 /* generate CPU information:
1091 * -? list model names
1092 * -?model list model names/IDs
1093 * -?dump output all model (x86_def_t) data
1094 * -?cpuid list all recognized cpuid flag names
1096 void x86_cpu_list(FILE *f, fprintf_function cpu_fprintf, const char *optarg)
1098 unsigned char model = !strcmp("?model", optarg);
1099 unsigned char dump = !strcmp("?dump", optarg);
1100 unsigned char cpuid = !strcmp("?cpuid", optarg);
1105 (*cpu_fprintf)(f, "Recognized CPUID flags:\n");
1106 listflags(buf, sizeof (buf), (uint32_t)~0, feature_name, 1);
1107 (*cpu_fprintf)(f, " f_edx: %s\n", buf);
1108 listflags(buf, sizeof (buf), (uint32_t)~0, ext_feature_name, 1);
1109 (*cpu_fprintf)(f, " f_ecx: %s\n", buf);
1110 listflags(buf, sizeof (buf), (uint32_t)~0, ext2_feature_name, 1);
1111 (*cpu_fprintf)(f, " extf_edx: %s\n", buf);
1112 listflags(buf, sizeof (buf), (uint32_t)~0, ext3_feature_name, 1);
1113 (*cpu_fprintf)(f, " extf_ecx: %s\n", buf);
1116 for (def = x86_defs; def; def = def->next) {
1117 snprintf(buf, sizeof (buf), def->flags ? "[%s]": "%s", def->name);
1118 if (model || dump) {
1119 (*cpu_fprintf)(f, "x86 %16s %-48s\n", buf, def->model_id);
1121 (*cpu_fprintf)(f, "x86 %16s\n", buf);
1124 memcpy(buf, &def->vendor1, sizeof (def->vendor1));
1125 memcpy(buf + 4, &def->vendor2, sizeof (def->vendor2));
1126 memcpy(buf + 8, &def->vendor3, sizeof (def->vendor3));
1129 " family %d model %d stepping %d level %d xlevel 0x%x"
1131 def->family, def->model, def->stepping, def->level,
1133 listflags(buf, sizeof (buf), def->features, feature_name, 0);
1134 (*cpu_fprintf)(f, " feature_edx %08x (%s)\n", def->features,
1136 listflags(buf, sizeof (buf), def->ext_features, ext_feature_name,
1138 (*cpu_fprintf)(f, " feature_ecx %08x (%s)\n", def->ext_features,
1140 listflags(buf, sizeof (buf), def->ext2_features, ext2_feature_name,
1142 (*cpu_fprintf)(f, " extfeature_edx %08x (%s)\n",
1143 def->ext2_features, buf);
1144 listflags(buf, sizeof (buf), def->ext3_features, ext3_feature_name,
1146 (*cpu_fprintf)(f, " extfeature_ecx %08x (%s)\n",
1147 def->ext3_features, buf);
1148 (*cpu_fprintf)(f, "\n");
1151 if (kvm_enabled()) {
1152 (*cpu_fprintf)(f, "x86 %16s\n", "[host]");
1156 int cpu_x86_register(X86CPU *cpu, const char *cpu_model)
1158 CPUX86State *env = &cpu->env;
1159 x86_def_t def1, *def = &def1;
1160 Error *error = NULL;
1162 memset(def, 0, sizeof(*def));
1164 if (cpu_x86_find_by_name(def, cpu_model) < 0)
1167 env->cpuid_vendor1 = def->vendor1;
1168 env->cpuid_vendor2 = def->vendor2;
1169 env->cpuid_vendor3 = def->vendor3;
1171 env->cpuid_vendor1 = CPUID_VENDOR_INTEL_1;
1172 env->cpuid_vendor2 = CPUID_VENDOR_INTEL_2;
1173 env->cpuid_vendor3 = CPUID_VENDOR_INTEL_3;
1175 env->cpuid_vendor_override = def->vendor_override;
1176 object_property_set_int(OBJECT(cpu), def->level, "level", &error);
1177 object_property_set_int(OBJECT(cpu), def->family, "family", &error);
1178 object_property_set_int(OBJECT(cpu), def->model, "model", &error);
1179 object_property_set_int(OBJECT(cpu), def->stepping, "stepping", &error);
1180 env->cpuid_features = def->features;
1181 env->cpuid_ext_features = def->ext_features;
1182 env->cpuid_ext2_features = def->ext2_features;
1183 env->cpuid_ext3_features = def->ext3_features;
1184 object_property_set_int(OBJECT(cpu), def->xlevel, "xlevel", &error);
1185 env->cpuid_kvm_features = def->kvm_features;
1186 env->cpuid_svm_features = def->svm_features;
1187 env->cpuid_ext4_features = def->ext4_features;
1188 env->cpuid_xlevel2 = def->xlevel2;
1189 object_property_set_int(OBJECT(cpu), (int64_t)def->tsc_khz * 1000,
1190 "tsc-frequency", &error);
1191 if (!kvm_enabled()) {
1192 env->cpuid_features &= TCG_FEATURES;
1193 env->cpuid_ext_features &= TCG_EXT_FEATURES;
1194 env->cpuid_ext2_features &= (TCG_EXT2_FEATURES
1195 #ifdef TARGET_X86_64
1196 | CPUID_EXT2_SYSCALL | CPUID_EXT2_LM
1199 env->cpuid_ext3_features &= TCG_EXT3_FEATURES;
1200 env->cpuid_svm_features &= TCG_SVM_FEATURES;
1202 object_property_set_str(OBJECT(cpu), def->model_id, "model-id", &error);
1203 if (error_is_set(&error)) {
1210 #if !defined(CONFIG_USER_ONLY)
1211 /* copy vendor id string to 32 bit register, nul pad as needed
1213 static void cpyid(const char *s, uint32_t *id)
1215 char *d = (char *)id;
1218 for (i = sizeof (*id); i--; )
1219 *d++ = *s ? *s++ : '\0';
1222 /* interpret radix and convert from string to arbitrary scalar,
1223 * otherwise flag failure
1225 #define setscalar(pval, str, perr) \
1230 ul = strtoul(str, &pend, 0); \
1231 *str && !*pend ? (*pval = ul) : (*perr = 1); \
1234 /* map cpuid options to feature bits, otherwise return failure
1235 * (option tags in *str are delimited by whitespace)
1237 static void setfeatures(uint32_t *pval, const char *str,
1238 const char **featureset, int *perr)
1242 for (q = p = str; *p || *q; q = p) {
1245 while (*p && !iswhite(*p))
1249 if (!lookup_feature(pval, q, p, featureset)) {
1250 fprintf(stderr, "error: feature \"%.*s\" not available in set\n",
1258 /* map config file options to x86_def_t form
1260 static int cpudef_setfield(const char *name, const char *str, void *opaque)
1262 x86_def_t *def = opaque;
1265 if (!strcmp(name, "name")) {
1266 g_free((void *)def->name);
1267 def->name = g_strdup(str);
1268 } else if (!strcmp(name, "model_id")) {
1269 strncpy(def->model_id, str, sizeof (def->model_id));
1270 } else if (!strcmp(name, "level")) {
1271 setscalar(&def->level, str, &err)
1272 } else if (!strcmp(name, "vendor")) {
1273 cpyid(&str[0], &def->vendor1);
1274 cpyid(&str[4], &def->vendor2);
1275 cpyid(&str[8], &def->vendor3);
1276 } else if (!strcmp(name, "family")) {
1277 setscalar(&def->family, str, &err)
1278 } else if (!strcmp(name, "model")) {
1279 setscalar(&def->model, str, &err)
1280 } else if (!strcmp(name, "stepping")) {
1281 setscalar(&def->stepping, str, &err)
1282 } else if (!strcmp(name, "feature_edx")) {
1283 setfeatures(&def->features, str, feature_name, &err);
1284 } else if (!strcmp(name, "feature_ecx")) {
1285 setfeatures(&def->ext_features, str, ext_feature_name, &err);
1286 } else if (!strcmp(name, "extfeature_edx")) {
1287 setfeatures(&def->ext2_features, str, ext2_feature_name, &err);
1288 } else if (!strcmp(name, "extfeature_ecx")) {
1289 setfeatures(&def->ext3_features, str, ext3_feature_name, &err);
1290 } else if (!strcmp(name, "xlevel")) {
1291 setscalar(&def->xlevel, str, &err)
1293 fprintf(stderr, "error: unknown option [%s = %s]\n", name, str);
1297 fprintf(stderr, "error: bad option value [%s = %s]\n", name, str);
1303 /* register config file entry as x86_def_t
1305 static int cpudef_register(QemuOpts *opts, void *opaque)
1307 x86_def_t *def = g_malloc0(sizeof (x86_def_t));
1309 qemu_opt_foreach(opts, cpudef_setfield, def, 1);
1310 def->next = x86_defs;
1315 void cpu_clear_apic_feature(CPUX86State *env)
1317 env->cpuid_features &= ~CPUID_APIC;
1320 #endif /* !CONFIG_USER_ONLY */
1322 /* register "cpudef" models defined in configuration file. Here we first
1323 * preload any built-in definitions
1325 void x86_cpudef_setup(void)
1329 for (i = 0; i < ARRAY_SIZE(builtin_x86_defs); ++i) {
1330 builtin_x86_defs[i].next = x86_defs;
1331 builtin_x86_defs[i].flags = 1;
1332 x86_defs = &builtin_x86_defs[i];
1334 #if !defined(CONFIG_USER_ONLY)
1335 qemu_opts_foreach(qemu_find_opts("cpudef"), cpudef_register, NULL, 0);
1339 static void get_cpuid_vendor(CPUX86State *env, uint32_t *ebx,
1340 uint32_t *ecx, uint32_t *edx)
1342 *ebx = env->cpuid_vendor1;
1343 *edx = env->cpuid_vendor2;
1344 *ecx = env->cpuid_vendor3;
1346 /* sysenter isn't supported on compatibility mode on AMD, syscall
1347 * isn't supported in compatibility mode on Intel.
1348 * Normally we advertise the actual cpu vendor, but you can override
1349 * this if you want to use KVM's sysenter/syscall emulation
1350 * in compatibility mode and when doing cross vendor migration
1352 if (kvm_enabled() && ! env->cpuid_vendor_override) {
1353 host_cpuid(0, 0, NULL, ebx, ecx, edx);
1357 void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
1358 uint32_t *eax, uint32_t *ebx,
1359 uint32_t *ecx, uint32_t *edx)
1361 /* test if maximum index reached */
1362 if (index & 0x80000000) {
1363 if (index > env->cpuid_xlevel) {
1364 if (env->cpuid_xlevel2 > 0) {
1365 /* Handle the Centaur's CPUID instruction. */
1366 if (index > env->cpuid_xlevel2) {
1367 index = env->cpuid_xlevel2;
1368 } else if (index < 0xC0000000) {
1369 index = env->cpuid_xlevel;
1372 index = env->cpuid_xlevel;
1376 if (index > env->cpuid_level)
1377 index = env->cpuid_level;
1382 *eax = env->cpuid_level;
1383 get_cpuid_vendor(env, ebx, ecx, edx);
1386 *eax = env->cpuid_version;
1387 *ebx = (env->cpuid_apic_id << 24) | 8 << 8; /* CLFLUSH size in quad words, Linux wants it. */
1388 *ecx = env->cpuid_ext_features;
1389 *edx = env->cpuid_features;
1390 if (env->nr_cores * env->nr_threads > 1) {
1391 *ebx |= (env->nr_cores * env->nr_threads) << 16;
1392 *edx |= 1 << 28; /* HTT bit */
1396 /* cache info: needed for Pentium Pro compatibility */
1403 /* cache info: needed for Core compatibility */
1404 if (env->nr_cores > 1) {
1405 *eax = (env->nr_cores - 1) << 26;
1410 case 0: /* L1 dcache info */
1416 case 1: /* L1 icache info */
1422 case 2: /* L2 cache info */
1424 if (env->nr_threads > 1) {
1425 *eax |= (env->nr_threads - 1) << 14;
1431 default: /* end of info */
1440 /* mwait info: needed for Core compatibility */
1441 *eax = 0; /* Smallest monitor-line size in bytes */
1442 *ebx = 0; /* Largest monitor-line size in bytes */
1443 *ecx = CPUID_MWAIT_EMX | CPUID_MWAIT_IBE;
1447 /* Thermal and Power Leaf */
1454 if (kvm_enabled()) {
1455 KVMState *s = env->kvm_state;
1457 *eax = kvm_arch_get_supported_cpuid(s, 0x7, count, R_EAX);
1458 *ebx = kvm_arch_get_supported_cpuid(s, 0x7, count, R_EBX);
1459 *ecx = kvm_arch_get_supported_cpuid(s, 0x7, count, R_ECX);
1460 *edx = kvm_arch_get_supported_cpuid(s, 0x7, count, R_EDX);
1469 /* Direct Cache Access Information Leaf */
1470 *eax = 0; /* Bits 0-31 in DCA_CAP MSR */
1476 /* Architectural Performance Monitoring Leaf */
1477 if (kvm_enabled()) {
1478 KVMState *s = env->kvm_state;
1480 *eax = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EAX);
1481 *ebx = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EBX);
1482 *ecx = kvm_arch_get_supported_cpuid(s, 0xA, count, R_ECX);
1483 *edx = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EDX);
1492 /* Processor Extended State */
1493 if (!(env->cpuid_ext_features & CPUID_EXT_XSAVE)) {
1500 if (kvm_enabled()) {
1501 KVMState *s = env->kvm_state;
1503 *eax = kvm_arch_get_supported_cpuid(s, 0xd, count, R_EAX);
1504 *ebx = kvm_arch_get_supported_cpuid(s, 0xd, count, R_EBX);
1505 *ecx = kvm_arch_get_supported_cpuid(s, 0xd, count, R_ECX);
1506 *edx = kvm_arch_get_supported_cpuid(s, 0xd, count, R_EDX);
1515 *eax = env->cpuid_xlevel;
1516 *ebx = env->cpuid_vendor1;
1517 *edx = env->cpuid_vendor2;
1518 *ecx = env->cpuid_vendor3;
1521 *eax = env->cpuid_version;
1523 *ecx = env->cpuid_ext3_features;
1524 *edx = env->cpuid_ext2_features;
1526 /* The Linux kernel checks for the CMPLegacy bit and
1527 * discards multiple thread information if it is set.
1528 * So dont set it here for Intel to make Linux guests happy.
1530 if (env->nr_cores * env->nr_threads > 1) {
1531 uint32_t tebx, tecx, tedx;
1532 get_cpuid_vendor(env, &tebx, &tecx, &tedx);
1533 if (tebx != CPUID_VENDOR_INTEL_1 ||
1534 tedx != CPUID_VENDOR_INTEL_2 ||
1535 tecx != CPUID_VENDOR_INTEL_3) {
1536 *ecx |= 1 << 1; /* CmpLegacy bit */
1543 *eax = env->cpuid_model[(index - 0x80000002) * 4 + 0];
1544 *ebx = env->cpuid_model[(index - 0x80000002) * 4 + 1];
1545 *ecx = env->cpuid_model[(index - 0x80000002) * 4 + 2];
1546 *edx = env->cpuid_model[(index - 0x80000002) * 4 + 3];
1549 /* cache info (L1 cache) */
1556 /* cache info (L2 cache) */
1563 /* virtual & phys address size in low 2 bytes. */
1564 /* XXX: This value must match the one used in the MMU code. */
1565 if (env->cpuid_ext2_features & CPUID_EXT2_LM) {
1566 /* 64 bit processor */
1567 /* XXX: The physical address space is limited to 42 bits in exec.c. */
1568 *eax = 0x00003028; /* 48 bits virtual, 40 bits physical */
1570 if (env->cpuid_features & CPUID_PSE36)
1571 *eax = 0x00000024; /* 36 bits physical */
1573 *eax = 0x00000020; /* 32 bits physical */
1578 if (env->nr_cores * env->nr_threads > 1) {
1579 *ecx |= (env->nr_cores * env->nr_threads) - 1;
1583 if (env->cpuid_ext3_features & CPUID_EXT3_SVM) {
1584 *eax = 0x00000001; /* SVM Revision */
1585 *ebx = 0x00000010; /* nr of ASIDs */
1587 *edx = env->cpuid_svm_features; /* optional features */
1596 *eax = env->cpuid_xlevel2;
1602 /* Support for VIA CPU's CPUID instruction */
1603 *eax = env->cpuid_version;
1606 *edx = env->cpuid_ext4_features;
1611 /* Reserved for the future, and now filled with zero */
1618 /* reserved values: zero */
1627 /* CPUClass::reset() */
1628 static void x86_cpu_reset(CPUState *s)
1630 X86CPU *cpu = X86_CPU(s);
1631 X86CPUClass *xcc = X86_CPU_GET_CLASS(cpu);
1632 CPUX86State *env = &cpu->env;
1635 if (qemu_loglevel_mask(CPU_LOG_RESET)) {
1636 qemu_log("CPU Reset (CPU %d)\n", env->cpu_index);
1637 log_cpu_state(env, X86_DUMP_FPU | X86_DUMP_CCOP);
1640 xcc->parent_reset(s);
1643 memset(env, 0, offsetof(CPUX86State, breakpoints));
1647 env->old_exception = -1;
1649 /* init to reset state */
1651 #ifdef CONFIG_SOFTMMU
1652 env->hflags |= HF_SOFTMMU_MASK;
1654 env->hflags2 |= HF2_GIF_MASK;
1656 cpu_x86_update_cr0(env, 0x60000010);
1657 env->a20_mask = ~0x0;
1658 env->smbase = 0x30000;
1660 env->idt.limit = 0xffff;
1661 env->gdt.limit = 0xffff;
1662 env->ldt.limit = 0xffff;
1663 env->ldt.flags = DESC_P_MASK | (2 << DESC_TYPE_SHIFT);
1664 env->tr.limit = 0xffff;
1665 env->tr.flags = DESC_P_MASK | (11 << DESC_TYPE_SHIFT);
1667 cpu_x86_load_seg_cache(env, R_CS, 0xf000, 0xffff0000, 0xffff,
1668 DESC_P_MASK | DESC_S_MASK | DESC_CS_MASK |
1669 DESC_R_MASK | DESC_A_MASK);
1670 cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffff,
1671 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
1673 cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffff,
1674 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
1676 cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffff,
1677 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
1679 cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffff,
1680 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
1682 cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffff,
1683 DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
1687 env->regs[R_EDX] = env->cpuid_version;
1692 for (i = 0; i < 8; i++) {
1697 env->mxcsr = 0x1f80;
1699 env->pat = 0x0007040600070406ULL;
1700 env->msr_ia32_misc_enable = MSR_IA32_MISC_ENABLE_DEFAULT;
1702 memset(env->dr, 0, sizeof(env->dr));
1703 env->dr[6] = DR6_FIXED_1;
1704 env->dr[7] = DR7_FIXED_1;
1705 cpu_breakpoint_remove_all(env, BP_CPU);
1706 cpu_watchpoint_remove_all(env, BP_CPU);
1709 static void mce_init(X86CPU *cpu)
1711 CPUX86State *cenv = &cpu->env;
1714 if (((cenv->cpuid_version >> 8) & 0xf) >= 6
1715 && (cenv->cpuid_features & (CPUID_MCE | CPUID_MCA)) ==
1716 (CPUID_MCE | CPUID_MCA)) {
1717 cenv->mcg_cap = MCE_CAP_DEF | MCE_BANKS_DEF;
1718 cenv->mcg_ctl = ~(uint64_t)0;
1719 for (bank = 0; bank < MCE_BANKS_DEF; bank++) {
1720 cenv->mce_banks[bank * 4] = ~(uint64_t)0;
1725 static void x86_cpu_initfn(Object *obj)
1727 X86CPU *cpu = X86_CPU(obj);
1728 CPUX86State *env = &cpu->env;
1732 object_property_add(obj, "family", "int",
1733 x86_cpuid_version_get_family,
1734 x86_cpuid_version_set_family, NULL, NULL, NULL);
1735 object_property_add(obj, "model", "int",
1736 x86_cpuid_version_get_model,
1737 x86_cpuid_version_set_model, NULL, NULL, NULL);
1738 object_property_add(obj, "stepping", "int",
1739 x86_cpuid_version_get_stepping,
1740 x86_cpuid_version_set_stepping, NULL, NULL, NULL);
1741 object_property_add(obj, "level", "int",
1742 x86_cpuid_get_level,
1743 x86_cpuid_set_level, NULL, NULL, NULL);
1744 object_property_add(obj, "xlevel", "int",
1745 x86_cpuid_get_xlevel,
1746 x86_cpuid_set_xlevel, NULL, NULL, NULL);
1747 object_property_add_str(obj, "vendor",
1748 x86_cpuid_get_vendor,
1749 x86_cpuid_set_vendor, NULL);
1750 object_property_add_str(obj, "model-id",
1751 x86_cpuid_get_model_id,
1752 x86_cpuid_set_model_id, NULL);
1753 object_property_add(obj, "tsc-frequency", "int",
1754 x86_cpuid_get_tsc_freq,
1755 x86_cpuid_set_tsc_freq, NULL, NULL, NULL);
1757 env->cpuid_apic_id = env->cpu_index;
1761 static void x86_cpu_common_class_init(ObjectClass *oc, void *data)
1763 X86CPUClass *xcc = X86_CPU_CLASS(oc);
1764 CPUClass *cc = CPU_CLASS(oc);
1766 xcc->parent_reset = cc->reset;
1767 cc->reset = x86_cpu_reset;
1770 static const TypeInfo x86_cpu_type_info = {
1771 .name = TYPE_X86_CPU,
1773 .instance_size = sizeof(X86CPU),
1774 .instance_init = x86_cpu_initfn,
1776 .class_size = sizeof(X86CPUClass),
1777 .class_init = x86_cpu_common_class_init,
1780 static void x86_cpu_register_types(void)
1782 type_register_static(&x86_cpu_type_info);
1785 type_init(x86_cpu_register_types)