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qemu-e2k/target-i386/cpu.c
Alexey Korolev 7feb640cf3 Fix guest OS hang when 64bit PCI bar present 
This patch addresses the issue fully described here:
http://lists.nongnu.org/archive/html/qemu-devel/2013-02/msg01804.html

Linux kernels prior to 2.6.36 do not disable the PCI device during
enumeration process. Since lower and higher parts of a 64bit BAR
are programmed separately this leads to qemu receiving a request to occupy
a completely wrong address region for a short period of time.
We have found that the boot process screws up completely if kvm-apic range
is overlapped even for a short period of time (it is fine for other
regions though).

This patch raises the priority of the kvm-apic memory region, so it is
never pushed out by PCI devices. The patch is quite safe as it does not
touch memory manager.

Signed-off-by: Alexey Korolev <akorolex@gmail.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2013-02-27 17:23:22 +02:00

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/*
* i386 CPUID helper functions
*
* Copyright (c) 2003 Fabrice Bellard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include "cpu.h"
#include "sysemu/kvm.h"
#include "sysemu/cpus.h"
#include "topology.h"
#include "qemu/option.h"
#include "qemu/config-file.h"
#include "qapi/qmp/qerror.h"
#include "qapi/visitor.h"
#include "sysemu/arch_init.h"
#include "hyperv.h"
#include "hw/hw.h"
#if defined(CONFIG_KVM)
#include <linux/kvm_para.h>
#endif
#include "sysemu/sysemu.h"
#ifndef CONFIG_USER_ONLY
#include "hw/xen.h"
#include "hw/sysbus.h"
#include "hw/apic_internal.h"
#endif
static void x86_cpu_vendor_words2str(char *dst, uint32_t vendor1,
uint32_t vendor2, uint32_t vendor3)
{
int i;
for (i = 0; i < 4; i++) {
dst[i] = vendor1 >> (8 * i);
dst[i + 4] = vendor2 >> (8 * i);
dst[i + 8] = vendor3 >> (8 * i);
}
dst[CPUID_VENDOR_SZ] = '\0';
}
/* feature flags taken from "Intel Processor Identification and the CPUID
* Instruction" and AMD's "CPUID Specification". In cases of disagreement
* between feature naming conventions, aliases may be added.
*/
static const char *feature_name[] = {
"fpu", "vme", "de", "pse",
"tsc", "msr", "pae", "mce",
"cx8", "apic", NULL, "sep",
"mtrr", "pge", "mca", "cmov",
"pat", "pse36", "pn" /* Intel psn */, "clflush" /* Intel clfsh */,
NULL, "ds" /* Intel dts */, "acpi", "mmx",
"fxsr", "sse", "sse2", "ss",
"ht" /* Intel htt */, "tm", "ia64", "pbe",
};
static const char *ext_feature_name[] = {
"pni|sse3" /* Intel,AMD sse3 */, "pclmulqdq|pclmuldq", "dtes64", "monitor",
"ds_cpl", "vmx", "smx", "est",
"tm2", "ssse3", "cid", NULL,
"fma", "cx16", "xtpr", "pdcm",
NULL, "pcid", "dca", "sse4.1|sse4_1",
"sse4.2|sse4_2", "x2apic", "movbe", "popcnt",
"tsc-deadline", "aes", "xsave", "osxsave",
"avx", "f16c", "rdrand", "hypervisor",
};
/* Feature names that are already defined on feature_name[] but are set on
* CPUID[8000_0001].EDX on AMD CPUs don't have their names on
* ext2_feature_name[]. They are copied automatically to cpuid_ext2_features
* if and only if CPU vendor is AMD.
*/
static const char *ext2_feature_name[] = {
NULL /* fpu */, NULL /* vme */, NULL /* de */, NULL /* pse */,
NULL /* tsc */, NULL /* msr */, NULL /* pae */, NULL /* mce */,
NULL /* cx8 */ /* AMD CMPXCHG8B */, NULL /* apic */, NULL, "syscall",
NULL /* mtrr */, NULL /* pge */, NULL /* mca */, NULL /* cmov */,
NULL /* pat */, NULL /* pse36 */, NULL, NULL /* Linux mp */,
"nx|xd", NULL, "mmxext", NULL /* mmx */,
NULL /* fxsr */, "fxsr_opt|ffxsr", "pdpe1gb" /* AMD Page1GB */, "rdtscp",
NULL, "lm|i64", "3dnowext", "3dnow",
};
static const char *ext3_feature_name[] = {
"lahf_lm" /* AMD LahfSahf */, "cmp_legacy", "svm", "extapic" /* AMD ExtApicSpace */,
"cr8legacy" /* AMD AltMovCr8 */, "abm", "sse4a", "misalignsse",
"3dnowprefetch", "osvw", "ibs", "xop",
"skinit", "wdt", NULL, "lwp",
"fma4", "tce", NULL, "nodeid_msr",
NULL, "tbm", "topoext", "perfctr_core",
"perfctr_nb", NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
};
static const char *ext4_feature_name[] = {
NULL, NULL, "xstore", "xstore-en",
NULL, NULL, "xcrypt", "xcrypt-en",
"ace2", "ace2-en", "phe", "phe-en",
"pmm", "pmm-en", NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
};
static const char *kvm_feature_name[] = {
"kvmclock", "kvm_nopiodelay", "kvm_mmu", "kvmclock",
"kvm_asyncpf", "kvm_steal_time", "kvm_pv_eoi", NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
};
static const char *svm_feature_name[] = {
"npt", "lbrv", "svm_lock", "nrip_save",
"tsc_scale", "vmcb_clean", "flushbyasid", "decodeassists",
NULL, NULL, "pause_filter", NULL,
"pfthreshold", NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
};
static const char *cpuid_7_0_ebx_feature_name[] = {
"fsgsbase", NULL, NULL, "bmi1", "hle", "avx2", NULL, "smep",
"bmi2", "erms", "invpcid", "rtm", NULL, NULL, NULL, NULL,
NULL, NULL, "rdseed", "adx", "smap", NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
};
typedef struct FeatureWordInfo {
const char **feat_names;
uint32_t cpuid_eax; /* Input EAX for CPUID */
int cpuid_reg; /* R_* register constant */
} FeatureWordInfo;
static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
[FEAT_1_EDX] = {
.feat_names = feature_name,
.cpuid_eax = 1, .cpuid_reg = R_EDX,
},
[FEAT_1_ECX] = {
.feat_names = ext_feature_name,
.cpuid_eax = 1, .cpuid_reg = R_ECX,
},
[FEAT_8000_0001_EDX] = {
.feat_names = ext2_feature_name,
.cpuid_eax = 0x80000001, .cpuid_reg = R_EDX,
},
[FEAT_8000_0001_ECX] = {
.feat_names = ext3_feature_name,
.cpuid_eax = 0x80000001, .cpuid_reg = R_ECX,
},
[FEAT_C000_0001_EDX] = {
.feat_names = ext4_feature_name,
.cpuid_eax = 0xC0000001, .cpuid_reg = R_EDX,
},
[FEAT_KVM] = {
.feat_names = kvm_feature_name,
.cpuid_eax = KVM_CPUID_FEATURES, .cpuid_reg = R_EAX,
},
[FEAT_SVM] = {
.feat_names = svm_feature_name,
.cpuid_eax = 0x8000000A, .cpuid_reg = R_EDX,
},
[FEAT_7_0_EBX] = {
.feat_names = cpuid_7_0_ebx_feature_name,
.cpuid_eax = 7, .cpuid_reg = R_EBX,
},
};
const char *get_register_name_32(unsigned int reg)
{
static const char *reg_names[CPU_NB_REGS32] = {
[R_EAX] = "EAX",
[R_ECX] = "ECX",
[R_EDX] = "EDX",
[R_EBX] = "EBX",
[R_ESP] = "ESP",
[R_EBP] = "EBP",
[R_ESI] = "ESI",
[R_EDI] = "EDI",
};
if (reg > CPU_NB_REGS32) {
return NULL;
}
return reg_names[reg];
}
/* collects per-function cpuid data
*/
typedef struct model_features_t {
uint32_t *guest_feat;
uint32_t *host_feat;
FeatureWord feat_word;
} model_features_t;
int check_cpuid = 0;
int enforce_cpuid = 0;
static uint32_t kvm_default_features = (1 << KVM_FEATURE_CLOCKSOURCE) |
(1 << KVM_FEATURE_NOP_IO_DELAY) |
(1 << KVM_FEATURE_CLOCKSOURCE2) |
(1 << KVM_FEATURE_ASYNC_PF) |
(1 << KVM_FEATURE_STEAL_TIME) |
(1 << KVM_FEATURE_PV_EOI) |
(1 << KVM_FEATURE_CLOCKSOURCE_STABLE_BIT);
void disable_kvm_pv_eoi(void)
{
kvm_default_features &= ~(1UL << KVM_FEATURE_PV_EOI);
}
void host_cpuid(uint32_t function, uint32_t count,
uint32_t *eax, uint32_t *ebx, uint32_t *ecx, uint32_t *edx)
{
#if defined(CONFIG_KVM)
uint32_t vec[4];
#ifdef __x86_64__
asm volatile("cpuid"
: "=a"(vec[0]), "=b"(vec[1]),
"=c"(vec[2]), "=d"(vec[3])
: "0"(function), "c"(count) : "cc");
#else
asm volatile("pusha \n\t"
"cpuid \n\t"
"mov %%eax, 0(%2) \n\t"
"mov %%ebx, 4(%2) \n\t"
"mov %%ecx, 8(%2) \n\t"
"mov %%edx, 12(%2) \n\t"
"popa"
: : "a"(function), "c"(count), "S"(vec)
: "memory", "cc");
#endif
if (eax)
*eax = vec[0];
if (ebx)
*ebx = vec[1];
if (ecx)
*ecx = vec[2];
if (edx)
*edx = vec[3];
#endif
}
#define iswhite(c) ((c) && ((c) <= ' ' || '~' < (c)))
/* general substring compare of *[s1..e1) and *[s2..e2). sx is start of
* a substring. ex if !NULL points to the first char after a substring,
* otherwise the string is assumed to sized by a terminating nul.
* Return lexical ordering of *s1:*s2.
*/
static int sstrcmp(const char *s1, const char *e1, const char *s2,
const char *e2)
{
for (;;) {
if (!*s1 || !*s2 || *s1 != *s2)
return (*s1 - *s2);
++s1, ++s2;
if (s1 == e1 && s2 == e2)
return (0);
else if (s1 == e1)
return (*s2);
else if (s2 == e2)
return (*s1);
}
}
/* compare *[s..e) to *altstr. *altstr may be a simple string or multiple
* '|' delimited (possibly empty) strings in which case search for a match
* within the alternatives proceeds left to right. Return 0 for success,
* non-zero otherwise.
*/
static int altcmp(const char *s, const char *e, const char *altstr)
{
const char *p, *q;
for (q = p = altstr; ; ) {
while (*p && *p != '|')
++p;
if ((q == p && !*s) || (q != p && !sstrcmp(s, e, q, p)))
return (0);
if (!*p)
return (1);
else
q = ++p;
}
}
/* search featureset for flag *[s..e), if found set corresponding bit in
* *pval and return true, otherwise return false
*/
static bool lookup_feature(uint32_t *pval, const char *s, const char *e,
const char **featureset)
{
uint32_t mask;
const char **ppc;
bool found = false;
for (mask = 1, ppc = featureset; mask; mask <<= 1, ++ppc) {
if (*ppc && !altcmp(s, e, *ppc)) {
*pval |= mask;
found = true;
}
}
return found;
}
static void add_flagname_to_bitmaps(const char *flagname,
FeatureWordArray words)
{
FeatureWord w;
for (w = 0; w < FEATURE_WORDS; w++) {
FeatureWordInfo *wi = &feature_word_info[w];
if (wi->feat_names &&
lookup_feature(&words[w], flagname, NULL, wi->feat_names)) {
break;
}
}
if (w == FEATURE_WORDS) {
fprintf(stderr, "CPU feature %s not found\n", flagname);
}
}
typedef struct x86_def_t {
const char *name;
uint32_t level;
/* vendor is zero-terminated, 12 character ASCII string */
char vendor[CPUID_VENDOR_SZ + 1];
int family;
int model;
int stepping;
uint32_t features, ext_features, ext2_features, ext3_features;
uint32_t kvm_features, svm_features;
uint32_t xlevel;
char model_id[48];
/* Store the results of Centaur's CPUID instructions */
uint32_t ext4_features;
uint32_t xlevel2;
/* The feature bits on CPUID[EAX=7,ECX=0].EBX */
uint32_t cpuid_7_0_ebx_features;
} x86_def_t;
#define I486_FEATURES (CPUID_FP87 | CPUID_VME | CPUID_PSE)
#define PENTIUM_FEATURES (I486_FEATURES | CPUID_DE | CPUID_TSC | \
CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_MMX | CPUID_APIC)
#define PENTIUM2_FEATURES (PENTIUM_FEATURES | CPUID_PAE | CPUID_SEP | \
CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \
CPUID_PSE36 | CPUID_FXSR)
#define PENTIUM3_FEATURES (PENTIUM2_FEATURES | CPUID_SSE)
#define PPRO_FEATURES (CPUID_FP87 | CPUID_DE | CPUID_PSE | CPUID_TSC | \
CPUID_MSR | CPUID_MCE | CPUID_CX8 | CPUID_PGE | CPUID_CMOV | \
CPUID_PAT | CPUID_FXSR | CPUID_MMX | CPUID_SSE | CPUID_SSE2 | \
CPUID_PAE | CPUID_SEP | CPUID_APIC)
#define TCG_FEATURES (CPUID_FP87 | CPUID_PSE | CPUID_TSC | CPUID_MSR | \
CPUID_PAE | CPUID_MCE | CPUID_CX8 | CPUID_APIC | CPUID_SEP | \
CPUID_MTRR | CPUID_PGE | CPUID_MCA | CPUID_CMOV | CPUID_PAT | \
CPUID_PSE36 | CPUID_CLFLUSH | CPUID_ACPI | CPUID_MMX | \
CPUID_FXSR | CPUID_SSE | CPUID_SSE2 | CPUID_SS)
/* partly implemented:
CPUID_MTRR, CPUID_MCA, CPUID_CLFLUSH (needed for Win64)
CPUID_PSE36 (needed for Solaris) */
/* missing:
CPUID_VME, CPUID_DTS, CPUID_SS, CPUID_HT, CPUID_TM, CPUID_PBE */
#define TCG_EXT_FEATURES (CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | \
CPUID_EXT_SSSE3 | CPUID_EXT_CX16 | CPUID_EXT_POPCNT | \
CPUID_EXT_MOVBE | CPUID_EXT_HYPERVISOR)
/* missing:
CPUID_EXT_PCLMULQDQ, CPUID_EXT_DTES64, CPUID_EXT_DSCPL,
CPUID_EXT_VMX, CPUID_EXT_SMX, CPUID_EXT_EST, CPUID_EXT_TM2,
CPUID_EXT_CID, CPUID_EXT_FMA, CPUID_EXT_XTPR, CPUID_EXT_PDCM,
CPUID_EXT_PCID, CPUID_EXT_DCA, CPUID_EXT_SSE41, CPUID_EXT_SSE42,
CPUID_EXT_X2APIC, CPUID_EXT_TSC_DEADLINE_TIMER, CPUID_EXT_AES,
CPUID_EXT_XSAVE, CPUID_EXT_OSXSAVE, CPUID_EXT_AVX,
CPUID_EXT_F16C, CPUID_EXT_RDRAND */
#define TCG_EXT2_FEATURES ((TCG_FEATURES & CPUID_EXT2_AMD_ALIASES) | \
CPUID_EXT2_NX | CPUID_EXT2_MMXEXT | CPUID_EXT2_RDTSCP | \
CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT)
/* missing:
CPUID_EXT2_PDPE1GB */
#define TCG_EXT3_FEATURES (CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | \
CPUID_EXT3_CR8LEG | CPUID_EXT3_ABM | CPUID_EXT3_SSE4A)
#define TCG_SVM_FEATURES 0
#define TCG_7_0_EBX_FEATURES (CPUID_7_0_EBX_SMEP | CPUID_7_0_EBX_SMAP \
CPUID_7_0_EBX_BMI1 | CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ADX)
/* missing:
CPUID_7_0_EBX_FSGSBASE, CPUID_7_0_EBX_HLE, CPUID_7_0_EBX_AVX2,
CPUID_7_0_EBX_ERMS, CPUID_7_0_EBX_INVPCID, CPUID_7_0_EBX_RTM,
CPUID_7_0_EBX_RDSEED */
/* built-in CPU model definitions
*/
static x86_def_t builtin_x86_defs[] = {
{
.name = "qemu64",
.level = 4,
.vendor = CPUID_VENDOR_AMD,
.family = 6,
.model = 2,
.stepping = 3,
.features = PPRO_FEATURES |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
CPUID_PSE36,
.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_CX16 | CPUID_EXT_POPCNT,
.ext2_features = (PPRO_FEATURES & CPUID_EXT2_AMD_ALIASES) |
CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
.ext3_features = CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM |
CPUID_EXT3_ABM | CPUID_EXT3_SSE4A,
.xlevel = 0x8000000A,
},
{
.name = "phenom",
.level = 5,
.vendor = CPUID_VENDOR_AMD,
.family = 16,
.model = 2,
.stepping = 3,
.features = PPRO_FEATURES |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
CPUID_PSE36 | CPUID_VME | CPUID_HT,
.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_CX16 |
CPUID_EXT_POPCNT,
.ext2_features = (PPRO_FEATURES & CPUID_EXT2_AMD_ALIASES) |
CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX |
CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT | CPUID_EXT2_MMXEXT |
CPUID_EXT2_FFXSR | CPUID_EXT2_PDPE1GB | CPUID_EXT2_RDTSCP,
/* Missing: CPUID_EXT3_CMP_LEG, CPUID_EXT3_EXTAPIC,
CPUID_EXT3_CR8LEG,
CPUID_EXT3_MISALIGNSSE, CPUID_EXT3_3DNOWPREFETCH,
CPUID_EXT3_OSVW, CPUID_EXT3_IBS */
.ext3_features = CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM |
CPUID_EXT3_ABM | CPUID_EXT3_SSE4A,
.svm_features = CPUID_SVM_NPT | CPUID_SVM_LBRV,
.xlevel = 0x8000001A,
.model_id = "AMD Phenom(tm) 9550 Quad-Core Processor"
},
{
.name = "core2duo",
.level = 10,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 15,
.stepping = 11,
.features = PPRO_FEATURES |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
CPUID_PSE36 | CPUID_VME | CPUID_DTS | CPUID_ACPI | CPUID_SS |
CPUID_HT | CPUID_TM | CPUID_PBE,
.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 |
CPUID_EXT_DTES64 | CPUID_EXT_DSCPL | CPUID_EXT_VMX | CPUID_EXT_EST |
CPUID_EXT_TM2 | CPUID_EXT_CX16 | CPUID_EXT_XTPR | CPUID_EXT_PDCM,
.ext2_features = CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
.ext3_features = CPUID_EXT3_LAHF_LM,
.xlevel = 0x80000008,
.model_id = "Intel(R) Core(TM)2 Duo CPU T7700 @ 2.40GHz",
},
{
.name = "kvm64",
.level = 5,
.vendor = CPUID_VENDOR_INTEL,
.family = 15,
.model = 6,
.stepping = 1,
/* Missing: CPUID_VME, CPUID_HT */
.features = PPRO_FEATURES |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
CPUID_PSE36,
/* Missing: CPUID_EXT_POPCNT, CPUID_EXT_MONITOR */
.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_CX16,
/* Missing: CPUID_EXT2_PDPE1GB, CPUID_EXT2_RDTSCP */
.ext2_features = (PPRO_FEATURES & CPUID_EXT2_AMD_ALIASES) |
CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
/* Missing: CPUID_EXT3_LAHF_LM, CPUID_EXT3_CMP_LEG, CPUID_EXT3_EXTAPIC,
CPUID_EXT3_CR8LEG, CPUID_EXT3_ABM, CPUID_EXT3_SSE4A,
CPUID_EXT3_MISALIGNSSE, CPUID_EXT3_3DNOWPREFETCH,
CPUID_EXT3_OSVW, CPUID_EXT3_IBS, CPUID_EXT3_SVM */
.ext3_features = 0,
.xlevel = 0x80000008,
.model_id = "Common KVM processor"
},
{
.name = "qemu32",
.level = 4,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 3,
.stepping = 3,
.features = PPRO_FEATURES,
.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_POPCNT,
.xlevel = 0x80000004,
},
{
.name = "kvm32",
.level = 5,
.vendor = CPUID_VENDOR_INTEL,
.family = 15,
.model = 6,
.stepping = 1,
.features = PPRO_FEATURES |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_PSE36,
.ext_features = CPUID_EXT_SSE3,
.ext2_features = PPRO_FEATURES & CPUID_EXT2_AMD_ALIASES,
.ext3_features = 0,
.xlevel = 0x80000008,
.model_id = "Common 32-bit KVM processor"
},
{
.name = "coreduo",
.level = 10,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 14,
.stepping = 8,
.features = PPRO_FEATURES | CPUID_VME |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_DTS | CPUID_ACPI |
CPUID_SS | CPUID_HT | CPUID_TM | CPUID_PBE,
.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_VMX |
CPUID_EXT_EST | CPUID_EXT_TM2 | CPUID_EXT_XTPR | CPUID_EXT_PDCM,
.ext2_features = CPUID_EXT2_NX,
.xlevel = 0x80000008,
.model_id = "Genuine Intel(R) CPU T2600 @ 2.16GHz",
},
{
.name = "486",
.level = 1,
.vendor = CPUID_VENDOR_INTEL,
.family = 4,
.model = 0,
.stepping = 0,
.features = I486_FEATURES,
.xlevel = 0,
},
{
.name = "pentium",
.level = 1,
.vendor = CPUID_VENDOR_INTEL,
.family = 5,
.model = 4,
.stepping = 3,
.features = PENTIUM_FEATURES,
.xlevel = 0,
},
{
.name = "pentium2",
.level = 2,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 5,
.stepping = 2,
.features = PENTIUM2_FEATURES,
.xlevel = 0,
},
{
.name = "pentium3",
.level = 2,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 7,
.stepping = 3,
.features = PENTIUM3_FEATURES,
.xlevel = 0,
},
{
.name = "athlon",
.level = 2,
.vendor = CPUID_VENDOR_AMD,
.family = 6,
.model = 2,
.stepping = 3,
.features = PPRO_FEATURES | CPUID_PSE36 | CPUID_VME | CPUID_MTRR |
CPUID_MCA,
.ext2_features = (PPRO_FEATURES & CPUID_EXT2_AMD_ALIASES) |
CPUID_EXT2_MMXEXT | CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT,
.xlevel = 0x80000008,
},
{
.name = "n270",
/* original is on level 10 */
.level = 5,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 28,
.stepping = 2,
.features = PPRO_FEATURES |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_VME | CPUID_DTS |
CPUID_ACPI | CPUID_SS | CPUID_HT | CPUID_TM | CPUID_PBE,
/* Some CPUs got no CPUID_SEP */
.ext_features = CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 |
CPUID_EXT_DSCPL | CPUID_EXT_EST | CPUID_EXT_TM2 | CPUID_EXT_XTPR,
.ext2_features = (PPRO_FEATURES & CPUID_EXT2_AMD_ALIASES) |
CPUID_EXT2_NX,
.ext3_features = CPUID_EXT3_LAHF_LM,
.xlevel = 0x8000000A,
.model_id = "Intel(R) Atom(TM) CPU N270 @ 1.60GHz",
},
{
.name = "Conroe",
.level = 2,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 2,
.stepping = 3,
.features = CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
CPUID_DE | CPUID_FP87,
.ext_features = CPUID_EXT_SSSE3 | CPUID_EXT_SSE3,
.ext2_features = CPUID_EXT2_LM | CPUID_EXT2_NX | CPUID_EXT2_SYSCALL,
.ext3_features = CPUID_EXT3_LAHF_LM,
.xlevel = 0x8000000A,
.model_id = "Intel Celeron_4x0 (Conroe/Merom Class Core 2)",
},
{
.name = "Penryn",
.level = 2,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 2,
.stepping = 3,
.features = CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
CPUID_DE | CPUID_FP87,
.ext_features = CPUID_EXT_SSE41 | CPUID_EXT_CX16 | CPUID_EXT_SSSE3 |
CPUID_EXT_SSE3,
.ext2_features = CPUID_EXT2_LM | CPUID_EXT2_NX | CPUID_EXT2_SYSCALL,
.ext3_features = CPUID_EXT3_LAHF_LM,
.xlevel = 0x8000000A,
.model_id = "Intel Core 2 Duo P9xxx (Penryn Class Core 2)",
},
{
.name = "Nehalem",
.level = 2,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 2,
.stepping = 3,
.features = CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
CPUID_DE | CPUID_FP87,
.ext_features = CPUID_EXT_POPCNT | CPUID_EXT_SSE42 | CPUID_EXT_SSE41 |
CPUID_EXT_CX16 | CPUID_EXT_SSSE3 | CPUID_EXT_SSE3,
.ext2_features = CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
.ext3_features = CPUID_EXT3_LAHF_LM,
.xlevel = 0x8000000A,
.model_id = "Intel Core i7 9xx (Nehalem Class Core i7)",
},
{
.name = "Westmere",
.level = 11,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 44,
.stepping = 1,
.features = CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
CPUID_DE | CPUID_FP87,
.ext_features = CPUID_EXT_AES | CPUID_EXT_POPCNT | CPUID_EXT_SSE42 |
CPUID_EXT_SSE41 | CPUID_EXT_CX16 | CPUID_EXT_SSSE3 |
CPUID_EXT_SSE3,
.ext2_features = CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
.ext3_features = CPUID_EXT3_LAHF_LM,
.xlevel = 0x8000000A,
.model_id = "Westmere E56xx/L56xx/X56xx (Nehalem-C)",
},
{
.name = "SandyBridge",
.level = 0xd,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 42,
.stepping = 1,
.features = CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
CPUID_DE | CPUID_FP87,
.ext_features = CPUID_EXT_AVX | CPUID_EXT_XSAVE | CPUID_EXT_AES |
CPUID_EXT_TSC_DEADLINE_TIMER | CPUID_EXT_POPCNT |
CPUID_EXT_X2APIC | CPUID_EXT_SSE42 | CPUID_EXT_SSE41 |
CPUID_EXT_CX16 | CPUID_EXT_SSSE3 | CPUID_EXT_PCLMULQDQ |
CPUID_EXT_SSE3,
.ext2_features = CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
CPUID_EXT2_SYSCALL,
.ext3_features = CPUID_EXT3_LAHF_LM,
.xlevel = 0x8000000A,
.model_id = "Intel Xeon E312xx (Sandy Bridge)",
},
{
.name = "Haswell",
.level = 0xd,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 60,
.stepping = 1,
.features = CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
CPUID_DE | CPUID_FP87,
.ext_features = CPUID_EXT_AVX | CPUID_EXT_XSAVE | CPUID_EXT_AES |
CPUID_EXT_POPCNT | CPUID_EXT_X2APIC | CPUID_EXT_SSE42 |
CPUID_EXT_SSE41 | CPUID_EXT_CX16 | CPUID_EXT_SSSE3 |
CPUID_EXT_PCLMULQDQ | CPUID_EXT_SSE3 |
CPUID_EXT_TSC_DEADLINE_TIMER | CPUID_EXT_FMA | CPUID_EXT_MOVBE |
CPUID_EXT_PCID,
.ext2_features = CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
CPUID_EXT2_SYSCALL,
.ext3_features = CPUID_EXT3_LAHF_LM,
.cpuid_7_0_ebx_features = CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 |
CPUID_7_0_EBX_HLE | CPUID_7_0_EBX_AVX2 | CPUID_7_0_EBX_SMEP |
CPUID_7_0_EBX_BMI2 | CPUID_7_0_EBX_ERMS | CPUID_7_0_EBX_INVPCID |
CPUID_7_0_EBX_RTM,
.xlevel = 0x8000000A,
.model_id = "Intel Core Processor (Haswell)",
},
{
.name = "Opteron_G1",
.level = 5,
.vendor = CPUID_VENDOR_AMD,
.family = 15,
.model = 6,
.stepping = 1,
.features = CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
CPUID_DE | CPUID_FP87,
.ext_features = CPUID_EXT_SSE3,
.ext2_features = CPUID_EXT2_LM | CPUID_EXT2_FXSR | CPUID_EXT2_MMX |
CPUID_EXT2_NX | CPUID_EXT2_PSE36 | CPUID_EXT2_PAT |
CPUID_EXT2_CMOV | CPUID_EXT2_MCA | CPUID_EXT2_PGE |
CPUID_EXT2_MTRR | CPUID_EXT2_SYSCALL | CPUID_EXT2_APIC |
CPUID_EXT2_CX8 | CPUID_EXT2_MCE | CPUID_EXT2_PAE | CPUID_EXT2_MSR |
CPUID_EXT2_TSC | CPUID_EXT2_PSE | CPUID_EXT2_DE | CPUID_EXT2_FPU,
.xlevel = 0x80000008,
.model_id = "AMD Opteron 240 (Gen 1 Class Opteron)",
},
{
.name = "Opteron_G2",
.level = 5,
.vendor = CPUID_VENDOR_AMD,
.family = 15,
.model = 6,
.stepping = 1,
.features = CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
CPUID_DE | CPUID_FP87,
.ext_features = CPUID_EXT_CX16 | CPUID_EXT_SSE3,
.ext2_features = CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_FXSR |
CPUID_EXT2_MMX | CPUID_EXT2_NX | CPUID_EXT2_PSE36 |
CPUID_EXT2_PAT | CPUID_EXT2_CMOV | CPUID_EXT2_MCA |
CPUID_EXT2_PGE | CPUID_EXT2_MTRR | CPUID_EXT2_SYSCALL |
CPUID_EXT2_APIC | CPUID_EXT2_CX8 | CPUID_EXT2_MCE |
CPUID_EXT2_PAE | CPUID_EXT2_MSR | CPUID_EXT2_TSC | CPUID_EXT2_PSE |
CPUID_EXT2_DE | CPUID_EXT2_FPU,
.ext3_features = CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM,
.xlevel = 0x80000008,
.model_id = "AMD Opteron 22xx (Gen 2 Class Opteron)",
},
{
.name = "Opteron_G3",
.level = 5,
.vendor = CPUID_VENDOR_AMD,
.family = 15,
.model = 6,
.stepping = 1,
.features = CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
CPUID_DE | CPUID_FP87,
.ext_features = CPUID_EXT_POPCNT | CPUID_EXT_CX16 | CPUID_EXT_MONITOR |
CPUID_EXT_SSE3,
.ext2_features = CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_FXSR |
CPUID_EXT2_MMX | CPUID_EXT2_NX | CPUID_EXT2_PSE36 |
CPUID_EXT2_PAT | CPUID_EXT2_CMOV | CPUID_EXT2_MCA |
CPUID_EXT2_PGE | CPUID_EXT2_MTRR | CPUID_EXT2_SYSCALL |
CPUID_EXT2_APIC | CPUID_EXT2_CX8 | CPUID_EXT2_MCE |
CPUID_EXT2_PAE | CPUID_EXT2_MSR | CPUID_EXT2_TSC | CPUID_EXT2_PSE |
CPUID_EXT2_DE | CPUID_EXT2_FPU,
.ext3_features = CPUID_EXT3_MISALIGNSSE | CPUID_EXT3_SSE4A |
CPUID_EXT3_ABM | CPUID_EXT3_SVM | CPUID_EXT3_LAHF_LM,
.xlevel = 0x80000008,
.model_id = "AMD Opteron 23xx (Gen 3 Class Opteron)",
},
{
.name = "Opteron_G4",
.level = 0xd,
.vendor = CPUID_VENDOR_AMD,
.family = 21,
.model = 1,
.stepping = 2,
.features = CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
CPUID_DE | CPUID_FP87,
.ext_features = CPUID_EXT_AVX | CPUID_EXT_XSAVE | CPUID_EXT_AES |
CPUID_EXT_POPCNT | CPUID_EXT_SSE42 | CPUID_EXT_SSE41 |
CPUID_EXT_CX16 | CPUID_EXT_SSSE3 | CPUID_EXT_PCLMULQDQ |
CPUID_EXT_SSE3,
.ext2_features = CPUID_EXT2_LM | CPUID_EXT2_RDTSCP |
CPUID_EXT2_PDPE1GB | CPUID_EXT2_FXSR | CPUID_EXT2_MMX |
CPUID_EXT2_NX | CPUID_EXT2_PSE36 | CPUID_EXT2_PAT |
CPUID_EXT2_CMOV | CPUID_EXT2_MCA | CPUID_EXT2_PGE |
CPUID_EXT2_MTRR | CPUID_EXT2_SYSCALL | CPUID_EXT2_APIC |
CPUID_EXT2_CX8 | CPUID_EXT2_MCE | CPUID_EXT2_PAE | CPUID_EXT2_MSR |
CPUID_EXT2_TSC | CPUID_EXT2_PSE | CPUID_EXT2_DE | CPUID_EXT2_FPU,
.ext3_features = CPUID_EXT3_FMA4 | CPUID_EXT3_XOP |
CPUID_EXT3_3DNOWPREFETCH | CPUID_EXT3_MISALIGNSSE |
CPUID_EXT3_SSE4A | CPUID_EXT3_ABM | CPUID_EXT3_SVM |
CPUID_EXT3_LAHF_LM,
.xlevel = 0x8000001A,
.model_id = "AMD Opteron 62xx class CPU",
},
{
.name = "Opteron_G5",
.level = 0xd,
.vendor = CPUID_VENDOR_AMD,
.family = 21,
.model = 2,
.stepping = 0,
.features = CPUID_SSE2 | CPUID_SSE | CPUID_FXSR | CPUID_MMX |
CPUID_CLFLUSH | CPUID_PSE36 | CPUID_PAT | CPUID_CMOV | CPUID_MCA |
CPUID_PGE | CPUID_MTRR | CPUID_SEP | CPUID_APIC | CPUID_CX8 |
CPUID_MCE | CPUID_PAE | CPUID_MSR | CPUID_TSC | CPUID_PSE |
CPUID_DE | CPUID_FP87,
.ext_features = CPUID_EXT_F16C | CPUID_EXT_AVX | CPUID_EXT_XSAVE |
CPUID_EXT_AES | CPUID_EXT_POPCNT | CPUID_EXT_SSE42 |
CPUID_EXT_SSE41 | CPUID_EXT_CX16 | CPUID_EXT_FMA |
CPUID_EXT_SSSE3 | CPUID_EXT_PCLMULQDQ | CPUID_EXT_SSE3,
.ext2_features = CPUID_EXT2_LM | CPUID_EXT2_RDTSCP |
CPUID_EXT2_PDPE1GB | CPUID_EXT2_FXSR | CPUID_EXT2_MMX |
CPUID_EXT2_NX | CPUID_EXT2_PSE36 | CPUID_EXT2_PAT |
CPUID_EXT2_CMOV | CPUID_EXT2_MCA | CPUID_EXT2_PGE |
CPUID_EXT2_MTRR | CPUID_EXT2_SYSCALL | CPUID_EXT2_APIC |
CPUID_EXT2_CX8 | CPUID_EXT2_MCE | CPUID_EXT2_PAE | CPUID_EXT2_MSR |
CPUID_EXT2_TSC | CPUID_EXT2_PSE | CPUID_EXT2_DE | CPUID_EXT2_FPU,
.ext3_features = CPUID_EXT3_TBM | CPUID_EXT3_FMA4 | CPUID_EXT3_XOP |
CPUID_EXT3_3DNOWPREFETCH | CPUID_EXT3_MISALIGNSSE |
CPUID_EXT3_SSE4A | CPUID_EXT3_ABM | CPUID_EXT3_SVM |
CPUID_EXT3_LAHF_LM,
.xlevel = 0x8000001A,
.model_id = "AMD Opteron 63xx class CPU",
},
};
#ifdef CONFIG_KVM
static int cpu_x86_fill_model_id(char *str)
{
uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
int i;
for (i = 0; i < 3; i++) {
host_cpuid(0x80000002 + i, 0, &eax, &ebx, &ecx, &edx);
memcpy(str + i * 16 + 0, &eax, 4);
memcpy(str + i * 16 + 4, &ebx, 4);
memcpy(str + i * 16 + 8, &ecx, 4);
memcpy(str + i * 16 + 12, &edx, 4);
}
return 0;
}
#endif
/* Fill a x86_def_t struct with information about the host CPU, and
* the CPU features supported by the host hardware + host kernel
*
* This function may be called only if KVM is enabled.
*/
static void kvm_cpu_fill_host(x86_def_t *x86_cpu_def)
{
#ifdef CONFIG_KVM
KVMState *s = kvm_state;
uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
assert(kvm_enabled());
x86_cpu_def->name = "host";
host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx);
x86_cpu_vendor_words2str(x86_cpu_def->vendor, ebx, edx, ecx);
host_cpuid(0x1, 0, &eax, &ebx, &ecx, &edx);
x86_cpu_def->family = ((eax >> 8) & 0x0F) + ((eax >> 20) & 0xFF);
x86_cpu_def->model = ((eax >> 4) & 0x0F) | ((eax & 0xF0000) >> 12);
x86_cpu_def->stepping = eax & 0x0F;
x86_cpu_def->level = kvm_arch_get_supported_cpuid(s, 0x0, 0, R_EAX);
x86_cpu_def->features = kvm_arch_get_supported_cpuid(s, 0x1, 0, R_EDX);
x86_cpu_def->ext_features = kvm_arch_get_supported_cpuid(s, 0x1, 0, R_ECX);
if (x86_cpu_def->level >= 7) {
x86_cpu_def->cpuid_7_0_ebx_features =
kvm_arch_get_supported_cpuid(s, 0x7, 0, R_EBX);
} else {
x86_cpu_def->cpuid_7_0_ebx_features = 0;
}
x86_cpu_def->xlevel = kvm_arch_get_supported_cpuid(s, 0x80000000, 0, R_EAX);
x86_cpu_def->ext2_features =
kvm_arch_get_supported_cpuid(s, 0x80000001, 0, R_EDX);
x86_cpu_def->ext3_features =
kvm_arch_get_supported_cpuid(s, 0x80000001, 0, R_ECX);
cpu_x86_fill_model_id(x86_cpu_def->model_id);
/* Call Centaur's CPUID instruction. */
if (!strcmp(x86_cpu_def->vendor, CPUID_VENDOR_VIA)) {
host_cpuid(0xC0000000, 0, &eax, &ebx, &ecx, &edx);
eax = kvm_arch_get_supported_cpuid(s, 0xC0000000, 0, R_EAX);
if (eax >= 0xC0000001) {
/* Support VIA max extended level */
x86_cpu_def->xlevel2 = eax;
host_cpuid(0xC0000001, 0, &eax, &ebx, &ecx, &edx);
x86_cpu_def->ext4_features =
kvm_arch_get_supported_cpuid(s, 0xC0000001, 0, R_EDX);
}
}
/* Other KVM-specific feature fields: */
x86_cpu_def->svm_features =
kvm_arch_get_supported_cpuid(s, 0x8000000A, 0, R_EDX);
x86_cpu_def->kvm_features =
kvm_arch_get_supported_cpuid(s, KVM_CPUID_FEATURES, 0, R_EAX);
#endif /* CONFIG_KVM */
}
static int unavailable_host_feature(FeatureWordInfo *f, uint32_t mask)
{
int i;
for (i = 0; i < 32; ++i)
if (1 << i & mask) {
const char *reg = get_register_name_32(f->cpuid_reg);
assert(reg);
fprintf(stderr, "warning: host doesn't support requested feature: "
"CPUID.%02XH:%s%s%s [bit %d]\n",
f->cpuid_eax, reg,
f->feat_names[i] ? "." : "",
f->feat_names[i] ? f->feat_names[i] : "", i);
break;
}
return 0;
}
/* Check if all requested cpu flags are making their way to the guest
*
* Returns 0 if all flags are supported by the host, non-zero otherwise.
*
* This function may be called only if KVM is enabled.
*/
static int kvm_check_features_against_host(X86CPU *cpu)
{
CPUX86State *env = &cpu->env;
x86_def_t host_def;
uint32_t mask;
int rv, i;
struct model_features_t ft[] = {
{&env->cpuid_features, &host_def.features,
FEAT_1_EDX },
{&env->cpuid_ext_features, &host_def.ext_features,
FEAT_1_ECX },
{&env->cpuid_ext2_features, &host_def.ext2_features,
FEAT_8000_0001_EDX },
{&env->cpuid_ext3_features, &host_def.ext3_features,
FEAT_8000_0001_ECX },
{&env->cpuid_ext4_features, &host_def.ext4_features,
FEAT_C000_0001_EDX },
{&env->cpuid_7_0_ebx_features, &host_def.cpuid_7_0_ebx_features,
FEAT_7_0_EBX },
{&env->cpuid_svm_features, &host_def.svm_features,
FEAT_SVM },
{&env->cpuid_kvm_features, &host_def.kvm_features,
FEAT_KVM },
};
assert(kvm_enabled());
kvm_cpu_fill_host(&host_def);
for (rv = 0, i = 0; i < ARRAY_SIZE(ft); ++i) {
FeatureWord w = ft[i].feat_word;
FeatureWordInfo *wi = &feature_word_info[w];
for (mask = 1; mask; mask <<= 1) {
if (*ft[i].guest_feat & mask &&
!(*ft[i].host_feat & mask)) {
unavailable_host_feature(wi, mask);
rv = 1;
}
}
}
return rv;
}
static void x86_cpuid_version_get_family(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
CPUX86State *env = &cpu->env;
int64_t value;
value = (env->cpuid_version >> 8) & 0xf;
if (value == 0xf) {
value += (env->cpuid_version >> 20) & 0xff;
}
visit_type_int(v, &value, name, errp);
}
static void x86_cpuid_version_set_family(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
CPUX86State *env = &cpu->env;
const int64_t min = 0;
const int64_t max = 0xff + 0xf;
int64_t value;
visit_type_int(v, &value, name, errp);
if (error_is_set(errp)) {
return;
}
if (value < min || value > max) {
error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
name ? name : "null", value, min, max);
return;
}
env->cpuid_version &= ~0xff00f00;
if (value > 0x0f) {
env->cpuid_version |= 0xf00 | ((value - 0x0f) << 20);
} else {
env->cpuid_version |= value << 8;
}
}
static void x86_cpuid_version_get_model(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
CPUX86State *env = &cpu->env;
int64_t value;
value = (env->cpuid_version >> 4) & 0xf;
value |= ((env->cpuid_version >> 16) & 0xf) << 4;
visit_type_int(v, &value, name, errp);
}
static void x86_cpuid_version_set_model(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
CPUX86State *env = &cpu->env;
const int64_t min = 0;
const int64_t max = 0xff;
int64_t value;
visit_type_int(v, &value, name, errp);
if (error_is_set(errp)) {
return;
}
if (value < min || value > max) {
error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
name ? name : "null", value, min, max);
return;
}
env->cpuid_version &= ~0xf00f0;
env->cpuid_version |= ((value & 0xf) << 4) | ((value >> 4) << 16);
}
static void x86_cpuid_version_get_stepping(Object *obj, Visitor *v,
void *opaque, const char *name,
Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
CPUX86State *env = &cpu->env;
int64_t value;
value = env->cpuid_version & 0xf;
visit_type_int(v, &value, name, errp);
}
static void x86_cpuid_version_set_stepping(Object *obj, Visitor *v,
void *opaque, const char *name,
Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
CPUX86State *env = &cpu->env;
const int64_t min = 0;
const int64_t max = 0xf;
int64_t value;
visit_type_int(v, &value, name, errp);
if (error_is_set(errp)) {
return;
}
if (value < min || value > max) {
error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
name ? name : "null", value, min, max);
return;
}
env->cpuid_version &= ~0xf;
env->cpuid_version |= value & 0xf;
}
static void x86_cpuid_get_level(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
visit_type_uint32(v, &cpu->env.cpuid_level, name, errp);
}
static void x86_cpuid_set_level(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
visit_type_uint32(v, &cpu->env.cpuid_level, name, errp);
}
static void x86_cpuid_get_xlevel(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
visit_type_uint32(v, &cpu->env.cpuid_xlevel, name, errp);
}
static void x86_cpuid_set_xlevel(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
visit_type_uint32(v, &cpu->env.cpuid_xlevel, name, errp);
}
static char *x86_cpuid_get_vendor(Object *obj, Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
CPUX86State *env = &cpu->env;
char *value;
value = (char *)g_malloc(CPUID_VENDOR_SZ + 1);
x86_cpu_vendor_words2str(value, env->cpuid_vendor1, env->cpuid_vendor2,
env->cpuid_vendor3);
return value;
}
static void x86_cpuid_set_vendor(Object *obj, const char *value,
Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
CPUX86State *env = &cpu->env;
int i;
if (strlen(value) != CPUID_VENDOR_SZ) {
error_set(errp, QERR_PROPERTY_VALUE_BAD, "",
"vendor", value);
return;
}
env->cpuid_vendor1 = 0;
env->cpuid_vendor2 = 0;
env->cpuid_vendor3 = 0;
for (i = 0; i < 4; i++) {
env->cpuid_vendor1 |= ((uint8_t)value[i ]) << (8 * i);
env->cpuid_vendor2 |= ((uint8_t)value[i + 4]) << (8 * i);
env->cpuid_vendor3 |= ((uint8_t)value[i + 8]) << (8 * i);
}
}
static char *x86_cpuid_get_model_id(Object *obj, Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
CPUX86State *env = &cpu->env;
char *value;
int i;
value = g_malloc(48 + 1);
for (i = 0; i < 48; i++) {
value[i] = env->cpuid_model[i >> 2] >> (8 * (i & 3));
}
value[48] = '\0';
return value;
}
static void x86_cpuid_set_model_id(Object *obj, const char *model_id,
Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
CPUX86State *env = &cpu->env;
int c, len, i;
if (model_id == NULL) {
model_id = "";
}
len = strlen(model_id);
memset(env->cpuid_model, 0, 48);
for (i = 0; i < 48; i++) {
if (i >= len) {
c = '\0';
} else {
c = (uint8_t)model_id[i];
}
env->cpuid_model[i >> 2] |= c << (8 * (i & 3));
}
}
static void x86_cpuid_get_tsc_freq(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
int64_t value;
value = cpu->env.tsc_khz * 1000;
visit_type_int(v, &value, name, errp);
}
static void x86_cpuid_set_tsc_freq(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
const int64_t min = 0;
const int64_t max = INT64_MAX;
int64_t value;
visit_type_int(v, &value, name, errp);
if (error_is_set(errp)) {
return;
}
if (value < min || value > max) {
error_set(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
name ? name : "null", value, min, max);
return;
}
cpu->env.tsc_khz = value / 1000;
}
static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *name)
{
x86_def_t *def;
int i;
if (name == NULL) {
return -1;
}
if (kvm_enabled() && strcmp(name, "host") == 0) {
kvm_cpu_fill_host(x86_cpu_def);
return 0;
}
for (i = 0; i < ARRAY_SIZE(builtin_x86_defs); i++) {
def = &builtin_x86_defs[i];
if (strcmp(name, def->name) == 0) {
memcpy(x86_cpu_def, def, sizeof(*def));
/* sysenter isn't supported in compatibility mode on AMD,
* syscall isn't supported in compatibility mode on Intel.
* Normally we advertise the actual CPU vendor, but you can
* override this using the 'vendor' property if you want to use
* KVM's sysenter/syscall emulation in compatibility mode and
* when doing cross vendor migration
*/
if (kvm_enabled()) {
uint32_t ebx = 0, ecx = 0, edx = 0;
host_cpuid(0, 0, NULL, &ebx, &ecx, &edx);
x86_cpu_vendor_words2str(x86_cpu_def->vendor, ebx, edx, ecx);
}
return 0;
}
}
return -1;
}
/* Parse "+feature,-feature,feature=foo" CPU feature string
*/
static void cpu_x86_parse_featurestr(X86CPU *cpu, char *features, Error **errp)
{
char *featurestr; /* Single 'key=value" string being parsed */
/* Features to be added */
FeatureWordArray plus_features = { 0 };
/* Features to be removed */
FeatureWordArray minus_features = { 0 };
uint32_t numvalue;
CPUX86State *env = &cpu->env;
featurestr = features ? strtok(features, ",") : NULL;
while (featurestr) {
char *val;
if (featurestr[0] == '+') {
add_flagname_to_bitmaps(featurestr + 1, plus_features);
} else if (featurestr[0] == '-') {
add_flagname_to_bitmaps(featurestr + 1, minus_features);
} else if ((val = strchr(featurestr, '='))) {
*val = 0; val++;
if (!strcmp(featurestr, "family")) {
object_property_parse(OBJECT(cpu), val, featurestr, errp);
} else if (!strcmp(featurestr, "model")) {
object_property_parse(OBJECT(cpu), val, featurestr, errp);
} else if (!strcmp(featurestr, "stepping")) {
object_property_parse(OBJECT(cpu), val, featurestr, errp);
} else if (!strcmp(featurestr, "level")) {
object_property_parse(OBJECT(cpu), val, featurestr, errp);
} else if (!strcmp(featurestr, "xlevel")) {
char *err;
char num[32];
numvalue = strtoul(val, &err, 0);
if (!*val || *err) {
error_setg(errp, "bad numerical value %s", val);
goto out;
}
if (numvalue < 0x80000000) {
fprintf(stderr, "xlevel value shall always be >= 0x80000000"
", fixup will be removed in future versions\n");
numvalue += 0x80000000;
}
snprintf(num, sizeof(num), "%" PRIu32, numvalue);
object_property_parse(OBJECT(cpu), num, featurestr, errp);
} else if (!strcmp(featurestr, "vendor")) {
object_property_parse(OBJECT(cpu), val, featurestr, errp);
} else if (!strcmp(featurestr, "model_id")) {
object_property_parse(OBJECT(cpu), val, "model-id", errp);
} else if (!strcmp(featurestr, "tsc_freq")) {
int64_t tsc_freq;
char *err;
char num[32];
tsc_freq = strtosz_suffix_unit(val, &err,
STRTOSZ_DEFSUFFIX_B, 1000);
if (tsc_freq < 0 || *err) {
error_setg(errp, "bad numerical value %s", val);
goto out;
}
snprintf(num, sizeof(num), "%" PRId64, tsc_freq);
object_property_parse(OBJECT(cpu), num, "tsc-frequency", errp);
} else if (!strcmp(featurestr, "hv_spinlocks")) {
char *err;
numvalue = strtoul(val, &err, 0);
if (!*val || *err) {
error_setg(errp, "bad numerical value %s", val);
goto out;
}
hyperv_set_spinlock_retries(numvalue);
} else {
error_setg(errp, "unrecognized feature %s", featurestr);
goto out;
}
} else if (!strcmp(featurestr, "check")) {
check_cpuid = 1;
} else if (!strcmp(featurestr, "enforce")) {
check_cpuid = enforce_cpuid = 1;
} else if (!strcmp(featurestr, "hv_relaxed")) {
hyperv_enable_relaxed_timing(true);
} else if (!strcmp(featurestr, "hv_vapic")) {
hyperv_enable_vapic_recommended(true);
} else {
error_setg(errp, "feature string `%s' not in format (+feature|"
"-feature|feature=xyz)", featurestr);
goto out;
}
if (error_is_set(errp)) {
goto out;
}
featurestr = strtok(NULL, ",");
}
env->cpuid_features |= plus_features[FEAT_1_EDX];
env->cpuid_ext_features |= plus_features[FEAT_1_ECX];
env->cpuid_ext2_features |= plus_features[FEAT_8000_0001_EDX];
env->cpuid_ext3_features |= plus_features[FEAT_8000_0001_ECX];
env->cpuid_ext4_features |= plus_features[FEAT_C000_0001_EDX];
env->cpuid_kvm_features |= plus_features[FEAT_KVM];
env->cpuid_svm_features |= plus_features[FEAT_SVM];
env->cpuid_7_0_ebx_features |= plus_features[FEAT_7_0_EBX];
env->cpuid_features &= ~minus_features[FEAT_1_EDX];
env->cpuid_ext_features &= ~minus_features[FEAT_1_ECX];
env->cpuid_ext2_features &= ~minus_features[FEAT_8000_0001_EDX];
env->cpuid_ext3_features &= ~minus_features[FEAT_8000_0001_ECX];
env->cpuid_ext4_features &= ~minus_features[FEAT_C000_0001_EDX];
env->cpuid_kvm_features &= ~minus_features[FEAT_KVM];
env->cpuid_svm_features &= ~minus_features[FEAT_SVM];
env->cpuid_7_0_ebx_features &= ~minus_features[FEAT_7_0_EBX];
out:
return;
}
/* generate a composite string into buf of all cpuid names in featureset
* selected by fbits. indicate truncation at bufsize in the event of overflow.
* if flags, suppress names undefined in featureset.
*/
static void listflags(char *buf, int bufsize, uint32_t fbits,
const char **featureset, uint32_t flags)
{
const char **p = &featureset[31];
char *q, *b, bit;
int nc;
b = 4 <= bufsize ? buf + (bufsize -= 3) - 1 : NULL;
*buf = '\0';
for (q = buf, bit = 31; fbits && bufsize; --p, fbits &= ~(1 << bit), --bit)
if (fbits & 1 << bit && (*p || !flags)) {
if (*p)
nc = snprintf(q, bufsize, "%s%s", q == buf ? "" : " ", *p);
else
nc = snprintf(q, bufsize, "%s[%d]", q == buf ? "" : " ", bit);
if (bufsize <= nc) {
if (b) {
memcpy(b, "...", sizeof("..."));
}
return;
}
q += nc;
bufsize -= nc;
}
}
/* generate CPU information. */
void x86_cpu_list(FILE *f, fprintf_function cpu_fprintf)
{
x86_def_t *def;
char buf[256];
int i;
for (i = 0; i < ARRAY_SIZE(builtin_x86_defs); i++) {
def = &builtin_x86_defs[i];
snprintf(buf, sizeof(buf), "%s", def->name);
(*cpu_fprintf)(f, "x86 %16s %-48s\n", buf, def->model_id);
}
if (kvm_enabled()) {
(*cpu_fprintf)(f, "x86 %16s\n", "[host]");
}
(*cpu_fprintf)(f, "\nRecognized CPUID flags:\n");
listflags(buf, sizeof(buf), (uint32_t)~0, feature_name, 1);
(*cpu_fprintf)(f, " %s\n", buf);
listflags(buf, sizeof(buf), (uint32_t)~0, ext_feature_name, 1);
(*cpu_fprintf)(f, " %s\n", buf);
listflags(buf, sizeof(buf), (uint32_t)~0, ext2_feature_name, 1);
(*cpu_fprintf)(f, " %s\n", buf);
listflags(buf, sizeof(buf), (uint32_t)~0, ext3_feature_name, 1);
(*cpu_fprintf)(f, " %s\n", buf);
}
CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
{
CpuDefinitionInfoList *cpu_list = NULL;
x86_def_t *def;
int i;
for (i = 0; i < ARRAY_SIZE(builtin_x86_defs); i++) {
CpuDefinitionInfoList *entry;
CpuDefinitionInfo *info;
def = &builtin_x86_defs[i];
info = g_malloc0(sizeof(*info));
info->name = g_strdup(def->name);
entry = g_malloc0(sizeof(*entry));
entry->value = info;
entry->next = cpu_list;
cpu_list = entry;
}
return cpu_list;
}
#ifdef CONFIG_KVM
static void filter_features_for_kvm(X86CPU *cpu)
{
CPUX86State *env = &cpu->env;
KVMState *s = kvm_state;
env->cpuid_features &=
kvm_arch_get_supported_cpuid(s, 1, 0, R_EDX);
env->cpuid_ext_features &=
kvm_arch_get_supported_cpuid(s, 1, 0, R_ECX);
env->cpuid_ext2_features &=
kvm_arch_get_supported_cpuid(s, 0x80000001, 0, R_EDX);
env->cpuid_ext3_features &=
kvm_arch_get_supported_cpuid(s, 0x80000001, 0, R_ECX);
env->cpuid_svm_features &=
kvm_arch_get_supported_cpuid(s, 0x8000000A, 0, R_EDX);
env->cpuid_7_0_ebx_features &=
kvm_arch_get_supported_cpuid(s, 7, 0, R_EBX);
env->cpuid_kvm_features &=
kvm_arch_get_supported_cpuid(s, KVM_CPUID_FEATURES, 0, R_EAX);
env->cpuid_ext4_features &=
kvm_arch_get_supported_cpuid(s, 0xC0000001, 0, R_EDX);
}
#endif
static void cpu_x86_register(X86CPU *cpu, const char *name, Error **errp)
{
CPUX86State *env = &cpu->env;
x86_def_t def1, *def = &def1;
memset(def, 0, sizeof(*def));
if (cpu_x86_find_by_name(def, name) < 0) {
error_setg(errp, "Unable to find CPU definition: %s", name);
return;
}
if (kvm_enabled()) {
def->kvm_features |= kvm_default_features;
}
def->ext_features |= CPUID_EXT_HYPERVISOR;
object_property_set_str(OBJECT(cpu), def->vendor, "vendor", errp);
object_property_set_int(OBJECT(cpu), def->level, "level", errp);
object_property_set_int(OBJECT(cpu), def->family, "family", errp);
object_property_set_int(OBJECT(cpu), def->model, "model", errp);
object_property_set_int(OBJECT(cpu), def->stepping, "stepping", errp);
env->cpuid_features = def->features;
env->cpuid_ext_features = def->ext_features;
env->cpuid_ext2_features = def->ext2_features;
env->cpuid_ext3_features = def->ext3_features;
object_property_set_int(OBJECT(cpu), def->xlevel, "xlevel", errp);
env->cpuid_kvm_features = def->kvm_features;
env->cpuid_svm_features = def->svm_features;
env->cpuid_ext4_features = def->ext4_features;
env->cpuid_7_0_ebx_features = def->cpuid_7_0_ebx_features;
env->cpuid_xlevel2 = def->xlevel2;
object_property_set_str(OBJECT(cpu), def->model_id, "model-id", errp);
}
X86CPU *cpu_x86_init(const char *cpu_model)
{
X86CPU *cpu = NULL;
CPUX86State *env;
gchar **model_pieces;
char *name, *features;
Error *error = NULL;
model_pieces = g_strsplit(cpu_model, ",", 2);
if (!model_pieces[0]) {
error_setg(&error, "Invalid/empty CPU model name");
goto out;
}
name = model_pieces[0];
features = model_pieces[1];
cpu = X86_CPU(object_new(TYPE_X86_CPU));
env = &cpu->env;
env->cpu_model_str = cpu_model;
cpu_x86_register(cpu, name, &error);
if (error) {
goto out;
}
cpu_x86_parse_featurestr(cpu, features, &error);
if (error) {
goto out;
}
object_property_set_bool(OBJECT(cpu), true, "realized", &error);
if (error) {
goto out;
}
out:
g_strfreev(model_pieces);
if (error) {
fprintf(stderr, "%s\n", error_get_pretty(error));
error_free(error);
if (cpu != NULL) {
object_unref(OBJECT(cpu));
cpu = NULL;
}
}
return cpu;
}
#if !defined(CONFIG_USER_ONLY)
void cpu_clear_apic_feature(CPUX86State *env)
{
env->cpuid_features &= ~CPUID_APIC;
}
#endif /* !CONFIG_USER_ONLY */
/* Initialize list of CPU models, filling some non-static fields if necessary
*/
void x86_cpudef_setup(void)
{
int i, j;
static const char *model_with_versions[] = { "qemu32", "qemu64", "athlon" };
for (i = 0; i < ARRAY_SIZE(builtin_x86_defs); ++i) {
x86_def_t *def = &builtin_x86_defs[i];
/* Look for specific "cpudef" models that */
/* have the QEMU version in .model_id */
for (j = 0; j < ARRAY_SIZE(model_with_versions); j++) {
if (strcmp(model_with_versions[j], def->name) == 0) {
pstrcpy(def->model_id, sizeof(def->model_id),
"QEMU Virtual CPU version ");
pstrcat(def->model_id, sizeof(def->model_id),
qemu_get_version());
break;
}
}
}
}
static void get_cpuid_vendor(CPUX86State *env, uint32_t *ebx,
uint32_t *ecx, uint32_t *edx)
{
*ebx = env->cpuid_vendor1;
*edx = env->cpuid_vendor2;
*ecx = env->cpuid_vendor3;
}
void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
uint32_t *eax, uint32_t *ebx,
uint32_t *ecx, uint32_t *edx)
{
X86CPU *cpu = x86_env_get_cpu(env);
CPUState *cs = CPU(cpu);
/* test if maximum index reached */
if (index & 0x80000000) {
if (index > env->cpuid_xlevel) {
if (env->cpuid_xlevel2 > 0) {
/* Handle the Centaur's CPUID instruction. */
if (index > env->cpuid_xlevel2) {
index = env->cpuid_xlevel2;
} else if (index < 0xC0000000) {
index = env->cpuid_xlevel;
}
} else {
/* Intel documentation states that invalid EAX input will
* return the same information as EAX=cpuid_level
* (Intel SDM Vol. 2A - Instruction Set Reference - CPUID)
*/
index = env->cpuid_level;
}
}
} else {
if (index > env->cpuid_level)
index = env->cpuid_level;
}
switch(index) {
case 0:
*eax = env->cpuid_level;
get_cpuid_vendor(env, ebx, ecx, edx);
break;
case 1:
*eax = env->cpuid_version;
*ebx = (env->cpuid_apic_id << 24) | 8 << 8; /* CLFLUSH size in quad words, Linux wants it. */
*ecx = env->cpuid_ext_features;
*edx = env->cpuid_features;
if (cs->nr_cores * cs->nr_threads > 1) {
*ebx |= (cs->nr_cores * cs->nr_threads) << 16;
*edx |= 1 << 28; /* HTT bit */
}
break;
case 2:
/* cache info: needed for Pentium Pro compatibility */
*eax = 1;
*ebx = 0;
*ecx = 0;
*edx = 0x2c307d;
break;
case 4:
/* cache info: needed for Core compatibility */
if (cs->nr_cores > 1) {
*eax = (cs->nr_cores - 1) << 26;
} else {
*eax = 0;
}
switch (count) {
case 0: /* L1 dcache info */
*eax |= 0x0000121;
*ebx = 0x1c0003f;
*ecx = 0x000003f;
*edx = 0x0000001;
break;
case 1: /* L1 icache info */
*eax |= 0x0000122;
*ebx = 0x1c0003f;
*ecx = 0x000003f;
*edx = 0x0000001;
break;
case 2: /* L2 cache info */
*eax |= 0x0000143;
if (cs->nr_threads > 1) {
*eax |= (cs->nr_threads - 1) << 14;
}
*ebx = 0x3c0003f;
*ecx = 0x0000fff;
*edx = 0x0000001;
break;
default: /* end of info */
*eax = 0;
*ebx = 0;
*ecx = 0;
*edx = 0;
break;
}
break;
case 5:
/* mwait info: needed for Core compatibility */
*eax = 0; /* Smallest monitor-line size in bytes */
*ebx = 0; /* Largest monitor-line size in bytes */
*ecx = CPUID_MWAIT_EMX | CPUID_MWAIT_IBE;
*edx = 0;
break;
case 6:
/* Thermal and Power Leaf */
*eax = 0;
*ebx = 0;
*ecx = 0;
*edx = 0;
break;
case 7:
/* Structured Extended Feature Flags Enumeration Leaf */
if (count == 0) {
*eax = 0; /* Maximum ECX value for sub-leaves */
*ebx = env->cpuid_7_0_ebx_features; /* Feature flags */
*ecx = 0; /* Reserved */
*edx = 0; /* Reserved */
} else {
*eax = 0;
*ebx = 0;
*ecx = 0;
*edx = 0;
}
break;
case 9:
/* Direct Cache Access Information Leaf */
*eax = 0; /* Bits 0-31 in DCA_CAP MSR */
*ebx = 0;
*ecx = 0;
*edx = 0;
break;
case 0xA:
/* Architectural Performance Monitoring Leaf */
if (kvm_enabled()) {
KVMState *s = cs->kvm_state;
*eax = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EAX);
*ebx = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EBX);
*ecx = kvm_arch_get_supported_cpuid(s, 0xA, count, R_ECX);
*edx = kvm_arch_get_supported_cpuid(s, 0xA, count, R_EDX);
} else {
*eax = 0;
*ebx = 0;
*ecx = 0;
*edx = 0;
}
break;
case 0xD:
/* Processor Extended State */
if (!(env->cpuid_ext_features & CPUID_EXT_XSAVE)) {
*eax = 0;
*ebx = 0;
*ecx = 0;
*edx = 0;
break;
}
if (kvm_enabled()) {
KVMState *s = cs->kvm_state;
*eax = kvm_arch_get_supported_cpuid(s, 0xd, count, R_EAX);
*ebx = kvm_arch_get_supported_cpuid(s, 0xd, count, R_EBX);
*ecx = kvm_arch_get_supported_cpuid(s, 0xd, count, R_ECX);
*edx = kvm_arch_get_supported_cpuid(s, 0xd, count, R_EDX);
} else {
*eax = 0;
*ebx = 0;
*ecx = 0;
*edx = 0;
}
break;
case 0x80000000:
*eax = env->cpuid_xlevel;
*ebx = env->cpuid_vendor1;
*edx = env->cpuid_vendor2;
*ecx = env->cpuid_vendor3;
break;
case 0x80000001:
*eax = env->cpuid_version;
*ebx = 0;
*ecx = env->cpuid_ext3_features;
*edx = env->cpuid_ext2_features;
/* The Linux kernel checks for the CMPLegacy bit and
* discards multiple thread information if it is set.
* So dont set it here for Intel to make Linux guests happy.
*/
if (cs->nr_cores * cs->nr_threads > 1) {
uint32_t tebx, tecx, tedx;
get_cpuid_vendor(env, &tebx, &tecx, &tedx);
if (tebx != CPUID_VENDOR_INTEL_1 ||
tedx != CPUID_VENDOR_INTEL_2 ||
tecx != CPUID_VENDOR_INTEL_3) {
*ecx |= 1 << 1; /* CmpLegacy bit */
}
}
break;
case 0x80000002:
case 0x80000003:
case 0x80000004:
*eax = env->cpuid_model[(index - 0x80000002) * 4 + 0];
*ebx = env->cpuid_model[(index - 0x80000002) * 4 + 1];
*ecx = env->cpuid_model[(index - 0x80000002) * 4 + 2];
*edx = env->cpuid_model[(index - 0x80000002) * 4 + 3];
break;
case 0x80000005:
/* cache info (L1 cache) */
*eax = 0x01ff01ff;
*ebx = 0x01ff01ff;
*ecx = 0x40020140;
*edx = 0x40020140;
break;
case 0x80000006:
/* cache info (L2 cache) */
*eax = 0;
*ebx = 0x42004200;
*ecx = 0x02008140;
*edx = 0;
break;
case 0x80000008:
/* virtual & phys address size in low 2 bytes. */
/* XXX: This value must match the one used in the MMU code. */
if (env->cpuid_ext2_features & CPUID_EXT2_LM) {
/* 64 bit processor */
/* XXX: The physical address space is limited to 42 bits in exec.c. */
*eax = 0x00003028; /* 48 bits virtual, 40 bits physical */
} else {
if (env->cpuid_features & CPUID_PSE36)
*eax = 0x00000024; /* 36 bits physical */
else
*eax = 0x00000020; /* 32 bits physical */
}
*ebx = 0;
*ecx = 0;
*edx = 0;
if (cs->nr_cores * cs->nr_threads > 1) {
*ecx |= (cs->nr_cores * cs->nr_threads) - 1;
}
break;
case 0x8000000A:
if (env->cpuid_ext3_features & CPUID_EXT3_SVM) {
*eax = 0x00000001; /* SVM Revision */
*ebx = 0x00000010; /* nr of ASIDs */
*ecx = 0;
*edx = env->cpuid_svm_features; /* optional features */
} else {
*eax = 0;
*ebx = 0;
*ecx = 0;
*edx = 0;
}
break;
case 0xC0000000:
*eax = env->cpuid_xlevel2;
*ebx = 0;
*ecx = 0;
*edx = 0;
break;
case 0xC0000001:
/* Support for VIA CPU's CPUID instruction */
*eax = env->cpuid_version;
*ebx = 0;
*ecx = 0;
*edx = env->cpuid_ext4_features;
break;
case 0xC0000002:
case 0xC0000003:
case 0xC0000004:
/* Reserved for the future, and now filled with zero */
*eax = 0;
*ebx = 0;
*ecx = 0;
*edx = 0;
break;
default:
/* reserved values: zero */
*eax = 0;
*ebx = 0;
*ecx = 0;
*edx = 0;
break;
}
}
/* CPUClass::reset() */
static void x86_cpu_reset(CPUState *s)
{
X86CPU *cpu = X86_CPU(s);
X86CPUClass *xcc = X86_CPU_GET_CLASS(cpu);
CPUX86State *env = &cpu->env;
int i;
if (qemu_loglevel_mask(CPU_LOG_RESET)) {
qemu_log("CPU Reset (CPU %d)\n", s->cpu_index);
log_cpu_state(env, CPU_DUMP_FPU | CPU_DUMP_CCOP);
}
xcc->parent_reset(s);
memset(env, 0, offsetof(CPUX86State, breakpoints));
tlb_flush(env, 1);
env->old_exception = -1;
/* init to reset state */
#ifdef CONFIG_SOFTMMU
env->hflags |= HF_SOFTMMU_MASK;
#endif
env->hflags2 |= HF2_GIF_MASK;
cpu_x86_update_cr0(env, 0x60000010);
env->a20_mask = ~0x0;
env->smbase = 0x30000;
env->idt.limit = 0xffff;
env->gdt.limit = 0xffff;
env->ldt.limit = 0xffff;
env->ldt.flags = DESC_P_MASK | (2 << DESC_TYPE_SHIFT);
env->tr.limit = 0xffff;
env->tr.flags = DESC_P_MASK | (11 << DESC_TYPE_SHIFT);
cpu_x86_load_seg_cache(env, R_CS, 0xf000, 0xffff0000, 0xffff,
DESC_P_MASK | DESC_S_MASK | DESC_CS_MASK |
DESC_R_MASK | DESC_A_MASK);
cpu_x86_load_seg_cache(env, R_DS, 0, 0, 0xffff,
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
DESC_A_MASK);
cpu_x86_load_seg_cache(env, R_ES, 0, 0, 0xffff,
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
DESC_A_MASK);
cpu_x86_load_seg_cache(env, R_SS, 0, 0, 0xffff,
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
DESC_A_MASK);
cpu_x86_load_seg_cache(env, R_FS, 0, 0, 0xffff,
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
DESC_A_MASK);
cpu_x86_load_seg_cache(env, R_GS, 0, 0, 0xffff,
DESC_P_MASK | DESC_S_MASK | DESC_W_MASK |
DESC_A_MASK);
env->eip = 0xfff0;
env->regs[R_EDX] = env->cpuid_version;
env->eflags = 0x2;
/* FPU init */
for (i = 0; i < 8; i++) {
env->fptags[i] = 1;
}
env->fpuc = 0x37f;
env->mxcsr = 0x1f80;
env->pat = 0x0007040600070406ULL;
env->msr_ia32_misc_enable = MSR_IA32_MISC_ENABLE_DEFAULT;
memset(env->dr, 0, sizeof(env->dr));
env->dr[6] = DR6_FIXED_1;
env->dr[7] = DR7_FIXED_1;
cpu_breakpoint_remove_all(env, BP_CPU);
cpu_watchpoint_remove_all(env, BP_CPU);
#if !defined(CONFIG_USER_ONLY)
/* We hard-wire the BSP to the first CPU. */
if (s->cpu_index == 0) {
apic_designate_bsp(env->apic_state);
}
env->halted = !cpu_is_bsp(cpu);
#endif
}
#ifndef CONFIG_USER_ONLY
bool cpu_is_bsp(X86CPU *cpu)
{
return cpu_get_apic_base(cpu->env.apic_state) & MSR_IA32_APICBASE_BSP;
}
/* TODO: remove me, when reset over QOM tree is implemented */
static void x86_cpu_machine_reset_cb(void *opaque)
{
X86CPU *cpu = opaque;
cpu_reset(CPU(cpu));
}
#endif
static void mce_init(X86CPU *cpu)
{
CPUX86State *cenv = &cpu->env;
unsigned int bank;
if (((cenv->cpuid_version >> 8) & 0xf) >= 6
&& (cenv->cpuid_features & (CPUID_MCE | CPUID_MCA)) ==
(CPUID_MCE | CPUID_MCA)) {
cenv->mcg_cap = MCE_CAP_DEF | MCE_BANKS_DEF;
cenv->mcg_ctl = ~(uint64_t)0;
for (bank = 0; bank < MCE_BANKS_DEF; bank++) {
cenv->mce_banks[bank * 4] = ~(uint64_t)0;
}
}
}
#define MSI_ADDR_BASE 0xfee00000
#ifndef CONFIG_USER_ONLY
static void x86_cpu_apic_init(X86CPU *cpu, Error **errp)
{
static int apic_mapped;
CPUX86State *env = &cpu->env;
APICCommonState *apic;
const char *apic_type = "apic";
if (kvm_irqchip_in_kernel()) {
apic_type = "kvm-apic";
} else if (xen_enabled()) {
apic_type = "xen-apic";
}
env->apic_state = qdev_try_create(NULL, apic_type);
if (env->apic_state == NULL) {
error_setg(errp, "APIC device '%s' could not be created", apic_type);
return;
}
object_property_add_child(OBJECT(cpu), "apic",
OBJECT(env->apic_state), NULL);
qdev_prop_set_uint8(env->apic_state, "id", env->cpuid_apic_id);
/* TODO: convert to link<> */
apic = APIC_COMMON(env->apic_state);
apic->cpu = cpu;
if (qdev_init(env->apic_state)) {
error_setg(errp, "APIC device '%s' could not be initialized",
object_get_typename(OBJECT(env->apic_state)));
return;
}
/* XXX: mapping more APICs at the same memory location */
if (apic_mapped == 0) {
/* NOTE: the APIC is directly connected to the CPU - it is not
on the global memory bus. */
/* XXX: what if the base changes? */
sysbus_mmio_map_overlap(SYS_BUS_DEVICE(env->apic_state), 0,
MSI_ADDR_BASE, 0x1000);
apic_mapped = 1;
}
}
#endif
static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
{
X86CPU *cpu = X86_CPU(dev);
X86CPUClass *xcc = X86_CPU_GET_CLASS(dev);
CPUX86State *env = &cpu->env;
#ifndef CONFIG_USER_ONLY
Error *local_err = NULL;
#endif
if (env->cpuid_7_0_ebx_features && env->cpuid_level < 7) {
env->cpuid_level = 7;
}
/* On AMD CPUs, some CPUID[8000_0001].EDX bits must match the bits on
* CPUID[1].EDX.
*/
if (env->cpuid_vendor1 == CPUID_VENDOR_AMD_1 &&
env->cpuid_vendor2 == CPUID_VENDOR_AMD_2 &&
env->cpuid_vendor3 == CPUID_VENDOR_AMD_3) {
env->cpuid_ext2_features &= ~CPUID_EXT2_AMD_ALIASES;
env->cpuid_ext2_features |= (env->cpuid_features
& CPUID_EXT2_AMD_ALIASES);
}
if (!kvm_enabled()) {
env->cpuid_features &= TCG_FEATURES;
env->cpuid_ext_features &= TCG_EXT_FEATURES;
env->cpuid_ext2_features &= (TCG_EXT2_FEATURES
#ifdef TARGET_X86_64
| CPUID_EXT2_SYSCALL | CPUID_EXT2_LM
#endif
);
env->cpuid_ext3_features &= TCG_EXT3_FEATURES;
env->cpuid_svm_features &= TCG_SVM_FEATURES;
} else {
#ifdef CONFIG_KVM
filter_features_for_kvm(cpu);
#endif
if (check_cpuid && kvm_check_features_against_host(cpu)
&& enforce_cpuid) {
error_setg(errp, "Host's CPU doesn't support requested features");
return;
}
}
#ifndef CONFIG_USER_ONLY
qemu_register_reset(x86_cpu_machine_reset_cb, cpu);
if (cpu->env.cpuid_features & CPUID_APIC || smp_cpus > 1) {
x86_cpu_apic_init(cpu, &local_err);
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
}
#endif
mce_init(cpu);
qemu_init_vcpu(&cpu->env);
cpu_reset(CPU(cpu));
xcc->parent_realize(dev, errp);
}
/* Enables contiguous-apic-ID mode, for compatibility */
static bool compat_apic_id_mode;
void enable_compat_apic_id_mode(void)
{
compat_apic_id_mode = true;
}
/* Calculates initial APIC ID for a specific CPU index
*
* Currently we need to be able to calculate the APIC ID from the CPU index
* alone (without requiring a CPU object), as the QEMU<->Seabios interfaces have
* no concept of "CPU index", and the NUMA tables on fw_cfg need the APIC ID of
* all CPUs up to max_cpus.
*/
uint32_t x86_cpu_apic_id_from_index(unsigned int cpu_index)
{
uint32_t correct_id;
static bool warned;
correct_id = x86_apicid_from_cpu_idx(smp_cores, smp_threads, cpu_index);
if (compat_apic_id_mode) {
if (cpu_index != correct_id && !warned) {
error_report("APIC IDs set in compatibility mode, "
"CPU topology won't match the configuration");
warned = true;
}
return cpu_index;
} else {
return correct_id;
}
}
static void x86_cpu_initfn(Object *obj)
{
CPUState *cs = CPU(obj);
X86CPU *cpu = X86_CPU(obj);
CPUX86State *env = &cpu->env;
static int inited;
cs->env_ptr = env;
cpu_exec_init(env);
object_property_add(obj, "family", "int",
x86_cpuid_version_get_family,
x86_cpuid_version_set_family, NULL, NULL, NULL);
object_property_add(obj, "model", "int",
x86_cpuid_version_get_model,
x86_cpuid_version_set_model, NULL, NULL, NULL);
object_property_add(obj, "stepping", "int",
x86_cpuid_version_get_stepping,
x86_cpuid_version_set_stepping, NULL, NULL, NULL);
object_property_add(obj, "level", "int",
x86_cpuid_get_level,
x86_cpuid_set_level, NULL, NULL, NULL);
object_property_add(obj, "xlevel", "int",
x86_cpuid_get_xlevel,
x86_cpuid_set_xlevel, NULL, NULL, NULL);
object_property_add_str(obj, "vendor",
x86_cpuid_get_vendor,
x86_cpuid_set_vendor, NULL);
object_property_add_str(obj, "model-id",
x86_cpuid_get_model_id,
x86_cpuid_set_model_id, NULL);
object_property_add(obj, "tsc-frequency", "int",
x86_cpuid_get_tsc_freq,
x86_cpuid_set_tsc_freq, NULL, NULL, NULL);
env->cpuid_apic_id = x86_cpu_apic_id_from_index(cs->cpu_index);
/* init various static tables used in TCG mode */
if (tcg_enabled() && !inited) {
inited = 1;
optimize_flags_init();
#ifndef CONFIG_USER_ONLY
cpu_set_debug_excp_handler(breakpoint_handler);
#endif
}
}
static void x86_cpu_common_class_init(ObjectClass *oc, void *data)
{
X86CPUClass *xcc = X86_CPU_CLASS(oc);
CPUClass *cc = CPU_CLASS(oc);
DeviceClass *dc = DEVICE_CLASS(oc);
xcc->parent_realize = dc->realize;
dc->realize = x86_cpu_realizefn;
xcc->parent_reset = cc->reset;
cc->reset = x86_cpu_reset;
}
static const TypeInfo x86_cpu_type_info = {
.name = TYPE_X86_CPU,
.parent = TYPE_CPU,
.instance_size = sizeof(X86CPU),
.instance_init = x86_cpu_initfn,
.abstract = false,
.class_size = sizeof(X86CPUClass),
.class_init = x86_cpu_common_class_init,
};
static void x86_cpu_register_types(void)
{
type_register_static(&x86_cpu_type_info);
}
type_init(x86_cpu_register_types)
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