qemu-e2k/target-i386/cpu.c

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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 "kvm_i386.h"
#include "qemu/error-report.h"
#include "qemu/option.h"
#include "qemu/config-file.h"
#include "qapi/qmp/qerror.h"
#include "qapi-types.h"
#include "qapi-visit.h"
#include "qapi/visitor.h"
#include "sysemu/arch_init.h"
#include "hw/hw.h"
#if defined(CONFIG_KVM)
#include <linux/kvm_para.h>
#endif
#include "sysemu/sysemu.h"
#include "hw/qdev-properties.h"
#ifndef CONFIG_USER_ONLY
#include "exec/address-spaces.h"
#include "hw/xen/xen.h"
#include "hw/i386/apic_internal.h"
#endif
/* Cache topology CPUID constants: */
/* CPUID Leaf 2 Descriptors */
#define CPUID_2_L1D_32KB_8WAY_64B 0x2c
#define CPUID_2_L1I_32KB_8WAY_64B 0x30
#define CPUID_2_L2_2MB_8WAY_64B 0x7d
/* CPUID Leaf 4 constants: */
/* EAX: */
#define CPUID_4_TYPE_DCACHE 1
#define CPUID_4_TYPE_ICACHE 2
#define CPUID_4_TYPE_UNIFIED 3
#define CPUID_4_LEVEL(l) ((l) << 5)
#define CPUID_4_SELF_INIT_LEVEL (1 << 8)
#define CPUID_4_FULLY_ASSOC (1 << 9)
/* EDX: */
#define CPUID_4_NO_INVD_SHARING (1 << 0)
#define CPUID_4_INCLUSIVE (1 << 1)
#define CPUID_4_COMPLEX_IDX (1 << 2)
#define ASSOC_FULL 0xFF
/* AMD associativity encoding used on CPUID Leaf 0x80000006: */
#define AMD_ENC_ASSOC(a) (a <= 1 ? a : \
a == 2 ? 0x2 : \
a == 4 ? 0x4 : \
a == 8 ? 0x6 : \
a == 16 ? 0x8 : \
a == 32 ? 0xA : \
a == 48 ? 0xB : \
a == 64 ? 0xC : \
a == 96 ? 0xD : \
a == 128 ? 0xE : \
a == ASSOC_FULL ? 0xF : \
0 /* invalid value */)
/* Definitions of the hardcoded cache entries we expose: */
/* L1 data cache: */
#define L1D_LINE_SIZE 64
#define L1D_ASSOCIATIVITY 8
#define L1D_SETS 64
#define L1D_PARTITIONS 1
/* Size = LINE_SIZE*ASSOCIATIVITY*SETS*PARTITIONS = 32KiB */
#define L1D_DESCRIPTOR CPUID_2_L1D_32KB_8WAY_64B
/*FIXME: CPUID leaf 0x80000005 is inconsistent with leaves 2 & 4 */
#define L1D_LINES_PER_TAG 1
#define L1D_SIZE_KB_AMD 64
#define L1D_ASSOCIATIVITY_AMD 2
/* L1 instruction cache: */
#define L1I_LINE_SIZE 64
#define L1I_ASSOCIATIVITY 8
#define L1I_SETS 64
#define L1I_PARTITIONS 1
/* Size = LINE_SIZE*ASSOCIATIVITY*SETS*PARTITIONS = 32KiB */
#define L1I_DESCRIPTOR CPUID_2_L1I_32KB_8WAY_64B
/*FIXME: CPUID leaf 0x80000005 is inconsistent with leaves 2 & 4 */
#define L1I_LINES_PER_TAG 1
#define L1I_SIZE_KB_AMD 64
#define L1I_ASSOCIATIVITY_AMD 2
/* Level 2 unified cache: */
#define L2_LINE_SIZE 64
#define L2_ASSOCIATIVITY 16
#define L2_SETS 4096
#define L2_PARTITIONS 1
/* Size = LINE_SIZE*ASSOCIATIVITY*SETS*PARTITIONS = 4MiB */
/*FIXME: CPUID leaf 2 descriptor is inconsistent with CPUID leaf 4 */
#define L2_DESCRIPTOR CPUID_2_L2_2MB_8WAY_64B
/*FIXME: CPUID leaf 0x80000006 is inconsistent with leaves 2 & 4 */
#define L2_LINES_PER_TAG 1
#define L2_SIZE_KB_AMD 512
/* No L3 cache: */
#define L3_SIZE_KB 0 /* disabled */
#define L3_ASSOCIATIVITY 0 /* disabled */
#define L3_LINES_PER_TAG 0 /* disabled */
#define L3_LINE_SIZE 0 /* disabled */
/* TLB definitions: */
#define L1_DTLB_2M_ASSOC 1
#define L1_DTLB_2M_ENTRIES 255
#define L1_DTLB_4K_ASSOC 1
#define L1_DTLB_4K_ENTRIES 255
#define L1_ITLB_2M_ASSOC 1
#define L1_ITLB_2M_ENTRIES 255
#define L1_ITLB_4K_ASSOC 1
#define L1_ITLB_4K_ENTRIES 255
#define L2_DTLB_2M_ASSOC 0 /* disabled */
#define L2_DTLB_2M_ENTRIES 0 /* disabled */
#define L2_DTLB_4K_ASSOC 4
#define L2_DTLB_4K_ENTRIES 512
#define L2_ITLB_2M_ASSOC 0 /* disabled */
#define L2_ITLB_2M_ENTRIES 0 /* disabled */
#define L2_ITLB_4K_ASSOC 4
#define L2_ITLB_4K_ENTRIES 512
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", "kvm_pv_unhalt",
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
"kvmclock-stable-bit", 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", "tsc_adjust", NULL, "bmi1", "hle", "avx2", NULL, "smep",
"bmi2", "erms", "invpcid", "rtm", NULL, NULL, "mpx", NULL,
"avx512f", NULL, "rdseed", "adx", "smap", NULL, "pcommit", "clflushopt",
"clwb", NULL, "avx512pf", "avx512er", "avx512cd", NULL, NULL, NULL,
};
static const char *cpuid_7_0_ecx_feature_name[] = {
NULL, NULL, NULL, "pku",
"ospke", 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, NULL, NULL,
};
static const char *cpuid_apm_edx_feature_name[] = {
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
"invtsc", 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 *cpuid_xsave_feature_name[] = {
"xsaveopt", "xsavec", "xgetbv1", "xsaves",
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, NULL, NULL, NULL,
};
static const char *cpuid_6_feature_name[] = {
NULL, NULL, "arat", 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,
NULL, NULL, NULL, NULL,
};
#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 | CPUID_DE)
/* partly implemented:
CPUID_MTRR, CPUID_MCA, CPUID_CLFLUSH (needed for Win64) */
/* missing:
CPUID_VME, CPUID_DTS, CPUID_SS, CPUID_HT, CPUID_TM, CPUID_PBE */
#define TCG_EXT_FEATURES (CPUID_EXT_SSE3 | CPUID_EXT_PCLMULQDQ | \
CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 | CPUID_EXT_CX16 | \
CPUID_EXT_SSE41 | CPUID_EXT_SSE42 | CPUID_EXT_POPCNT | \
CPUID_EXT_MOVBE | CPUID_EXT_AES | CPUID_EXT_HYPERVISOR)
/* missing:
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_X2APIC, CPUID_EXT_TSC_DEADLINE_TIMER, CPUID_EXT_XSAVE,
CPUID_EXT_OSXSAVE, CPUID_EXT_AVX, CPUID_EXT_F16C,
CPUID_EXT_RDRAND */
#ifdef TARGET_X86_64
#define TCG_EXT2_X86_64_FEATURES (CPUID_EXT2_SYSCALL | CPUID_EXT2_LM)
#else
#define TCG_EXT2_X86_64_FEATURES 0
#endif
#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 | CPUID_EXT2_PDPE1GB | \
TCG_EXT2_X86_64_FEATURES)
#define TCG_EXT3_FEATURES (CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM | \
CPUID_EXT3_CR8LEG | CPUID_EXT3_ABM | CPUID_EXT3_SSE4A)
#define TCG_EXT4_FEATURES 0
#define TCG_SVM_FEATURES 0
#define TCG_KVM_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 | \
CPUID_7_0_EBX_PCOMMIT | CPUID_7_0_EBX_CLFLUSHOPT | \
CPUID_7_0_EBX_CLWB)
/* 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 */
#define TCG_7_0_ECX_FEATURES 0
#define TCG_APM_FEATURES 0
#define TCG_6_EAX_FEATURES CPUID_6_EAX_ARAT
typedef struct FeatureWordInfo {
const char **feat_names;
uint32_t cpuid_eax; /* Input EAX for CPUID */
bool cpuid_needs_ecx; /* CPUID instruction uses ECX as input */
uint32_t cpuid_ecx; /* Input ECX value for CPUID */
int cpuid_reg; /* output register (R_* constant) */
uint32_t tcg_features; /* Feature flags supported by TCG */
uint32_t unmigratable_flags; /* Feature flags known to be unmigratable */
} FeatureWordInfo;
static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
[FEAT_1_EDX] = {
.feat_names = feature_name,
.cpuid_eax = 1, .cpuid_reg = R_EDX,
.tcg_features = TCG_FEATURES,
},
[FEAT_1_ECX] = {
.feat_names = ext_feature_name,
.cpuid_eax = 1, .cpuid_reg = R_ECX,
.tcg_features = TCG_EXT_FEATURES,
},
[FEAT_8000_0001_EDX] = {
.feat_names = ext2_feature_name,
.cpuid_eax = 0x80000001, .cpuid_reg = R_EDX,
.tcg_features = TCG_EXT2_FEATURES,
},
[FEAT_8000_0001_ECX] = {
.feat_names = ext3_feature_name,
.cpuid_eax = 0x80000001, .cpuid_reg = R_ECX,
.tcg_features = TCG_EXT3_FEATURES,
},
[FEAT_C000_0001_EDX] = {
.feat_names = ext4_feature_name,
.cpuid_eax = 0xC0000001, .cpuid_reg = R_EDX,
.tcg_features = TCG_EXT4_FEATURES,
},
[FEAT_KVM] = {
.feat_names = kvm_feature_name,
.cpuid_eax = KVM_CPUID_FEATURES, .cpuid_reg = R_EAX,
.tcg_features = TCG_KVM_FEATURES,
},
[FEAT_SVM] = {
.feat_names = svm_feature_name,
.cpuid_eax = 0x8000000A, .cpuid_reg = R_EDX,
.tcg_features = TCG_SVM_FEATURES,
},
[FEAT_7_0_EBX] = {
.feat_names = cpuid_7_0_ebx_feature_name,
.cpuid_eax = 7,
.cpuid_needs_ecx = true, .cpuid_ecx = 0,
.cpuid_reg = R_EBX,
.tcg_features = TCG_7_0_EBX_FEATURES,
},
[FEAT_7_0_ECX] = {
.feat_names = cpuid_7_0_ecx_feature_name,
.cpuid_eax = 7,
.cpuid_needs_ecx = true, .cpuid_ecx = 0,
.cpuid_reg = R_ECX,
.tcg_features = TCG_7_0_ECX_FEATURES,
},
[FEAT_8000_0007_EDX] = {
.feat_names = cpuid_apm_edx_feature_name,
.cpuid_eax = 0x80000007,
.cpuid_reg = R_EDX,
.tcg_features = TCG_APM_FEATURES,
.unmigratable_flags = CPUID_APM_INVTSC,
},
[FEAT_XSAVE] = {
.feat_names = cpuid_xsave_feature_name,
.cpuid_eax = 0xd,
.cpuid_needs_ecx = true, .cpuid_ecx = 1,
.cpuid_reg = R_EAX,
.tcg_features = 0,
},
[FEAT_6_EAX] = {
.feat_names = cpuid_6_feature_name,
.cpuid_eax = 6, .cpuid_reg = R_EAX,
.tcg_features = TCG_6_EAX_FEATURES,
},
};
typedef struct X86RegisterInfo32 {
/* Name of register */
const char *name;
/* QAPI enum value register */
X86CPURegister32 qapi_enum;
} X86RegisterInfo32;
#define REGISTER(reg) \
[R_##reg] = { .name = #reg, .qapi_enum = X86_CPU_REGISTER32_##reg }
static const X86RegisterInfo32 x86_reg_info_32[CPU_NB_REGS32] = {
REGISTER(EAX),
REGISTER(ECX),
REGISTER(EDX),
REGISTER(EBX),
REGISTER(ESP),
REGISTER(EBP),
REGISTER(ESI),
REGISTER(EDI),
};
#undef REGISTER
typedef struct ExtSaveArea {
uint32_t feature, bits;
uint32_t offset, size;
} ExtSaveArea;
static const ExtSaveArea ext_save_areas[] = {
[2] = { .feature = FEAT_1_ECX, .bits = CPUID_EXT_AVX,
.offset = 0x240, .size = 0x100 },
[3] = { .feature = FEAT_7_0_EBX, .bits = CPUID_7_0_EBX_MPX,
.offset = 0x3c0, .size = 0x40 },
[4] = { .feature = FEAT_7_0_EBX, .bits = CPUID_7_0_EBX_MPX,
.offset = 0x400, .size = 0x40 },
[5] = { .feature = FEAT_7_0_EBX, .bits = CPUID_7_0_EBX_AVX512F,
.offset = 0x440, .size = 0x40 },
[6] = { .feature = FEAT_7_0_EBX, .bits = CPUID_7_0_EBX_AVX512F,
.offset = 0x480, .size = 0x200 },
[7] = { .feature = FEAT_7_0_EBX, .bits = CPUID_7_0_EBX_AVX512F,
.offset = 0x680, .size = 0x400 },
[9] = { .feature = FEAT_7_0_ECX, .bits = CPUID_7_0_ECX_PKU,
.offset = 0xA80, .size = 0x8 },
};
target-i386: check/enforce: Fix CPUID leaf numbers on error messages The -cpu check/enforce warnings are printing incorrect information about the missing flags. There are no feature flags on CPUID leaves 0 and 0x80000000, but there were references to 0 and 0x80000000 in the table at kvm_check_features_against_host(). This changes the model_features_t struct to contain the register number as well, so the error messages print the correct CPUID leaf+register information, instead of wrong CPUID leaf numbers. This also changes the format of the error messages, so they follow the "CPUID.<leaf>.<register>.<name> [bit <offset>]" convention used in Intel documentation. Example output: $ qemu-system-x86_64 -machine pc-1.0,accel=kvm -cpu Opteron_G4,+ia64,enforce warning: host doesn't support requested feature: CPUID.01H:EDX.ia64 [bit 30] warning: host doesn't support requested feature: CPUID.01H:ECX.xsave [bit 26] warning: host doesn't support requested feature: CPUID.01H:ECX.avx [bit 28] warning: host doesn't support requested feature: CPUID.80000001H:ECX.abm [bit 5] warning: host doesn't support requested feature: CPUID.80000001H:ECX.sse4a [bit 6] warning: host doesn't support requested feature: CPUID.80000001H:ECX.misalignsse [bit 7] warning: host doesn't support requested feature: CPUID.80000001H:ECX.3dnowprefetch [bit 8] warning: host doesn't support requested feature: CPUID.80000001H:ECX.xop [bit 11] warning: host doesn't support requested feature: CPUID.80000001H:ECX.fma4 [bit 16] Unable to find x86 CPU definition $ Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-01-04 23:01:06 +01:00
const char *get_register_name_32(unsigned int reg)
{
if (reg >= CPU_NB_REGS32) {
target-i386: check/enforce: Fix CPUID leaf numbers on error messages The -cpu check/enforce warnings are printing incorrect information about the missing flags. There are no feature flags on CPUID leaves 0 and 0x80000000, but there were references to 0 and 0x80000000 in the table at kvm_check_features_against_host(). This changes the model_features_t struct to contain the register number as well, so the error messages print the correct CPUID leaf+register information, instead of wrong CPUID leaf numbers. This also changes the format of the error messages, so they follow the "CPUID.<leaf>.<register>.<name> [bit <offset>]" convention used in Intel documentation. Example output: $ qemu-system-x86_64 -machine pc-1.0,accel=kvm -cpu Opteron_G4,+ia64,enforce warning: host doesn't support requested feature: CPUID.01H:EDX.ia64 [bit 30] warning: host doesn't support requested feature: CPUID.01H:ECX.xsave [bit 26] warning: host doesn't support requested feature: CPUID.01H:ECX.avx [bit 28] warning: host doesn't support requested feature: CPUID.80000001H:ECX.abm [bit 5] warning: host doesn't support requested feature: CPUID.80000001H:ECX.sse4a [bit 6] warning: host doesn't support requested feature: CPUID.80000001H:ECX.misalignsse [bit 7] warning: host doesn't support requested feature: CPUID.80000001H:ECX.3dnowprefetch [bit 8] warning: host doesn't support requested feature: CPUID.80000001H:ECX.xop [bit 11] warning: host doesn't support requested feature: CPUID.80000001H:ECX.fma4 [bit 16] Unable to find x86 CPU definition $ Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-01-04 23:01:06 +01:00
return NULL;
}
return x86_reg_info_32[reg].name;
target-i386: check/enforce: Fix CPUID leaf numbers on error messages The -cpu check/enforce warnings are printing incorrect information about the missing flags. There are no feature flags on CPUID leaves 0 and 0x80000000, but there were references to 0 and 0x80000000 in the table at kvm_check_features_against_host(). This changes the model_features_t struct to contain the register number as well, so the error messages print the correct CPUID leaf+register information, instead of wrong CPUID leaf numbers. This also changes the format of the error messages, so they follow the "CPUID.<leaf>.<register>.<name> [bit <offset>]" convention used in Intel documentation. Example output: $ qemu-system-x86_64 -machine pc-1.0,accel=kvm -cpu Opteron_G4,+ia64,enforce warning: host doesn't support requested feature: CPUID.01H:EDX.ia64 [bit 30] warning: host doesn't support requested feature: CPUID.01H:ECX.xsave [bit 26] warning: host doesn't support requested feature: CPUID.01H:ECX.avx [bit 28] warning: host doesn't support requested feature: CPUID.80000001H:ECX.abm [bit 5] warning: host doesn't support requested feature: CPUID.80000001H:ECX.sse4a [bit 6] warning: host doesn't support requested feature: CPUID.80000001H:ECX.misalignsse [bit 7] warning: host doesn't support requested feature: CPUID.80000001H:ECX.3dnowprefetch [bit 8] warning: host doesn't support requested feature: CPUID.80000001H:ECX.xop [bit 11] warning: host doesn't support requested feature: CPUID.80000001H:ECX.fma4 [bit 16] Unable to find x86 CPU definition $ Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-01-04 23:01:06 +01:00
}
/*
* Returns the set of feature flags that are supported and migratable by
* QEMU, for a given FeatureWord.
*/
static uint32_t x86_cpu_get_migratable_flags(FeatureWord w)
{
FeatureWordInfo *wi = &feature_word_info[w];
uint32_t r = 0;
int i;
for (i = 0; i < 32; i++) {
uint32_t f = 1U << i;
/* If the feature name is unknown, it is not supported by QEMU yet */
if (!wi->feat_names[i]) {
continue;
}
/* Skip features known to QEMU, but explicitly marked as unmigratable */
if (wi->unmigratable_flags & f) {
continue;
}
r |= f;
}
return r;
}
void host_cpuid(uint32_t function, uint32_t count,
uint32_t *eax, uint32_t *ebx, uint32_t *ecx, uint32_t *edx)
{
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");
#elif defined(__i386__)
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");
#else
abort();
#endif
if (eax)
*eax = vec[0];
if (ebx)
*ebx = vec[1];
if (ecx)
*ecx = vec[2];
if (edx)
*edx = vec[3];
}
#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,
Error **errp)
{
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) {
error_setg(errp, "CPU feature %s not found", flagname);
}
}
/* CPU class name definitions: */
#define X86_CPU_TYPE_SUFFIX "-" TYPE_X86_CPU
#define X86_CPU_TYPE_NAME(name) (name X86_CPU_TYPE_SUFFIX)
/* Return type name for a given CPU model name
* Caller is responsible for freeing the returned string.
*/
static char *x86_cpu_type_name(const char *model_name)
{
return g_strdup_printf(X86_CPU_TYPE_NAME("%s"), model_name);
}
static ObjectClass *x86_cpu_class_by_name(const char *cpu_model)
{
ObjectClass *oc;
char *typename;
if (cpu_model == NULL) {
return NULL;
}
typename = x86_cpu_type_name(cpu_model);
oc = object_class_by_name(typename);
g_free(typename);
return oc;
}
struct X86CPUDefinition {
const char *name;
uint32_t level;
uint32_t xlevel;
uint32_t xlevel2;
/* vendor is zero-terminated, 12 character ASCII string */
char vendor[CPUID_VENDOR_SZ + 1];
int family;
int model;
int stepping;
FeatureWordArray features;
char model_id[48];
};
static X86CPUDefinition builtin_x86_defs[] = {
{
.name = "qemu64",
.level = 0xd,
.vendor = CPUID_VENDOR_AMD,
.family = 6,
.model = 6,
.stepping = 3,
.features[FEAT_1_EDX] =
PPRO_FEATURES |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
CPUID_PSE36,
.features[FEAT_1_ECX] =
CPUID_EXT_SSE3 | CPUID_EXT_CX16,
.features[FEAT_8000_0001_EDX] =
CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM,
.xlevel = 0x8000000A,
},
{
.name = "phenom",
.level = 5,
.vendor = CPUID_VENDOR_AMD,
.family = 16,
.model = 2,
.stepping = 3,
/* Missing: CPUID_HT */
.features[FEAT_1_EDX] =
PPRO_FEATURES |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
CPUID_PSE36 | CPUID_VME,
.features[FEAT_1_ECX] =
CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_CX16 |
CPUID_EXT_POPCNT,
.features[FEAT_8000_0001_EDX] =
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 */
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_LAHF_LM | CPUID_EXT3_SVM |
CPUID_EXT3_ABM | CPUID_EXT3_SSE4A,
/* Missing: CPUID_SVM_LBRV */
.features[FEAT_SVM] =
CPUID_SVM_NPT,
.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,
/* Missing: CPUID_DTS, CPUID_HT, CPUID_TM, CPUID_PBE */
.features[FEAT_1_EDX] =
PPRO_FEATURES |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
CPUID_PSE36 | CPUID_VME | CPUID_ACPI | CPUID_SS,
/* Missing: CPUID_EXT_DTES64, CPUID_EXT_DSCPL, CPUID_EXT_EST,
* CPUID_EXT_TM2, CPUID_EXT_XTPR, CPUID_EXT_PDCM, CPUID_EXT_VMX */
.features[FEAT_1_ECX] =
CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 |
CPUID_EXT_CX16,
.features[FEAT_8000_0001_EDX] =
CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_LAHF_LM,
.xlevel = 0x80000008,
.model_id = "Intel(R) Core(TM)2 Duo CPU T7700 @ 2.40GHz",
},
{
.name = "kvm64",
.level = 0xd,
.vendor = CPUID_VENDOR_INTEL,
.family = 15,
.model = 6,
.stepping = 1,
/* Missing: CPUID_HT */
.features[FEAT_1_EDX] =
PPRO_FEATURES | CPUID_VME |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA |
CPUID_PSE36,
/* Missing: CPUID_EXT_POPCNT, CPUID_EXT_MONITOR */
.features[FEAT_1_ECX] =
CPUID_EXT_SSE3 | CPUID_EXT_CX16,
/* Missing: CPUID_EXT2_PDPE1GB, CPUID_EXT2_RDTSCP */
.features[FEAT_8000_0001_EDX] =
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 */
.features[FEAT_8000_0001_ECX] =
0,
.xlevel = 0x80000008,
.model_id = "Common KVM processor"
},
{
.name = "qemu32",
.level = 4,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 6,
.stepping = 3,
.features[FEAT_1_EDX] =
PPRO_FEATURES,
.features[FEAT_1_ECX] =
CPUID_EXT_SSE3,
.xlevel = 0x80000004,
},
{
.name = "kvm32",
.level = 5,
.vendor = CPUID_VENDOR_INTEL,
.family = 15,
.model = 6,
.stepping = 1,
.features[FEAT_1_EDX] =
PPRO_FEATURES | CPUID_VME |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_PSE36,
.features[FEAT_1_ECX] =
CPUID_EXT_SSE3,
.features[FEAT_8000_0001_ECX] =
0,
.xlevel = 0x80000008,
.model_id = "Common 32-bit KVM processor"
},
{
.name = "coreduo",
.level = 10,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 14,
.stepping = 8,
/* Missing: CPUID_DTS, CPUID_HT, CPUID_TM, CPUID_PBE */
.features[FEAT_1_EDX] =
PPRO_FEATURES | CPUID_VME |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_ACPI |
CPUID_SS,
/* Missing: CPUID_EXT_EST, CPUID_EXT_TM2 , CPUID_EXT_XTPR,
* CPUID_EXT_PDCM, CPUID_EXT_VMX */
.features[FEAT_1_ECX] =
CPUID_EXT_SSE3 | CPUID_EXT_MONITOR,
.features[FEAT_8000_0001_EDX] =
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 = 8,
.stepping = 0,
.features[FEAT_1_EDX] =
I486_FEATURES,
.xlevel = 0,
},
{
.name = "pentium",
.level = 1,
.vendor = CPUID_VENDOR_INTEL,
.family = 5,
.model = 4,
.stepping = 3,
.features[FEAT_1_EDX] =
PENTIUM_FEATURES,
.xlevel = 0,
},
{
.name = "pentium2",
.level = 2,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 5,
.stepping = 2,
.features[FEAT_1_EDX] =
PENTIUM2_FEATURES,
.xlevel = 0,
},
{
.name = "pentium3",
.level = 3,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 7,
.stepping = 3,
.features[FEAT_1_EDX] =
PENTIUM3_FEATURES,
.xlevel = 0,
},
{
.name = "athlon",
.level = 2,
.vendor = CPUID_VENDOR_AMD,
.family = 6,
.model = 2,
.stepping = 3,
.features[FEAT_1_EDX] =
PPRO_FEATURES | CPUID_PSE36 | CPUID_VME | CPUID_MTRR |
CPUID_MCA,
.features[FEAT_8000_0001_EDX] =
CPUID_EXT2_MMXEXT | CPUID_EXT2_3DNOW | CPUID_EXT2_3DNOWEXT,
.xlevel = 0x80000008,
},
{
.name = "n270",
.level = 10,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 28,
.stepping = 2,
/* Missing: CPUID_DTS, CPUID_HT, CPUID_TM, CPUID_PBE */
.features[FEAT_1_EDX] =
PPRO_FEATURES |
CPUID_MTRR | CPUID_CLFLUSH | CPUID_MCA | CPUID_VME |
CPUID_ACPI | CPUID_SS,
/* Some CPUs got no CPUID_SEP */
/* Missing: CPUID_EXT_DSCPL, CPUID_EXT_EST, CPUID_EXT_TM2,
* CPUID_EXT_XTPR */
.features[FEAT_1_ECX] =
CPUID_EXT_SSE3 | CPUID_EXT_MONITOR | CPUID_EXT_SSSE3 |
CPUID_EXT_MOVBE,
.features[FEAT_8000_0001_EDX] =
CPUID_EXT2_NX,
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_LAHF_LM,
.xlevel = 0x80000008,
.model_id = "Intel(R) Atom(TM) CPU N270 @ 1.60GHz",
},
{
.name = "Conroe",
.level = 10,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 15,
.stepping = 3,
.features[FEAT_1_EDX] =
CPUID_VME | 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,
.features[FEAT_1_ECX] =
CPUID_EXT_SSSE3 | CPUID_EXT_SSE3,
.features[FEAT_8000_0001_EDX] =
CPUID_EXT2_LM | CPUID_EXT2_NX | CPUID_EXT2_SYSCALL,
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_LAHF_LM,
.xlevel = 0x80000008,
.model_id = "Intel Celeron_4x0 (Conroe/Merom Class Core 2)",
},
{
.name = "Penryn",
.level = 10,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 23,
.stepping = 3,
.features[FEAT_1_EDX] =
CPUID_VME | 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,
.features[FEAT_1_ECX] =
CPUID_EXT_SSE41 | CPUID_EXT_CX16 | CPUID_EXT_SSSE3 |
CPUID_EXT_SSE3,
.features[FEAT_8000_0001_EDX] =
CPUID_EXT2_LM | CPUID_EXT2_NX | CPUID_EXT2_SYSCALL,
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_LAHF_LM,
.xlevel = 0x80000008,
.model_id = "Intel Core 2 Duo P9xxx (Penryn Class Core 2)",
},
{
.name = "Nehalem",
.level = 11,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 26,
.stepping = 3,
.features[FEAT_1_EDX] =
CPUID_VME | 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,
.features[FEAT_1_ECX] =
CPUID_EXT_POPCNT | CPUID_EXT_SSE42 | CPUID_EXT_SSE41 |
CPUID_EXT_CX16 | CPUID_EXT_SSSE3 | CPUID_EXT_SSE3,
.features[FEAT_8000_0001_EDX] =
CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_LAHF_LM,
.xlevel = 0x80000008,
.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[FEAT_1_EDX] =
CPUID_VME | 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,
.features[FEAT_1_ECX] =
CPUID_EXT_AES | CPUID_EXT_POPCNT | CPUID_EXT_SSE42 |
CPUID_EXT_SSE41 | CPUID_EXT_CX16 | CPUID_EXT_SSSE3 |
CPUID_EXT_PCLMULQDQ | CPUID_EXT_SSE3,
.features[FEAT_8000_0001_EDX] =
CPUID_EXT2_LM | CPUID_EXT2_SYSCALL | CPUID_EXT2_NX,
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_LAHF_LM,
.features[FEAT_6_EAX] =
CPUID_6_EAX_ARAT,
.xlevel = 0x80000008,
.model_id = "Westmere E56xx/L56xx/X56xx (Nehalem-C)",
},
{
.name = "SandyBridge",
.level = 0xd,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 42,
.stepping = 1,
.features[FEAT_1_EDX] =
CPUID_VME | 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,
.features[FEAT_1_ECX] =
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,
.features[FEAT_8000_0001_EDX] =
CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
CPUID_EXT2_SYSCALL,
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_LAHF_LM,
.features[FEAT_XSAVE] =
CPUID_XSAVE_XSAVEOPT,
.features[FEAT_6_EAX] =
CPUID_6_EAX_ARAT,
.xlevel = 0x80000008,
.model_id = "Intel Xeon E312xx (Sandy Bridge)",
},
{
.name = "IvyBridge",
.level = 0xd,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 58,
.stepping = 9,
.features[FEAT_1_EDX] =
CPUID_VME | 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,
.features[FEAT_1_ECX] =
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 | CPUID_EXT_F16C | CPUID_EXT_RDRAND,
.features[FEAT_7_0_EBX] =
CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_SMEP |
CPUID_7_0_EBX_ERMS,
.features[FEAT_8000_0001_EDX] =
CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
CPUID_EXT2_SYSCALL,
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_LAHF_LM,
.features[FEAT_XSAVE] =
CPUID_XSAVE_XSAVEOPT,
.features[FEAT_6_EAX] =
CPUID_6_EAX_ARAT,
.xlevel = 0x80000008,
.model_id = "Intel Xeon E3-12xx v2 (Ivy Bridge)",
},
{
.name = "Haswell-noTSX",
.level = 0xd,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 60,
.stepping = 1,
.features[FEAT_1_EDX] =
CPUID_VME | 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,
.features[FEAT_1_ECX] =
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 | CPUID_EXT_F16C | CPUID_EXT_RDRAND,
.features[FEAT_8000_0001_EDX] =
CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
CPUID_EXT2_SYSCALL,
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_ABM | CPUID_EXT3_LAHF_LM,
.features[FEAT_7_0_EBX] =
CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 |
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,
.features[FEAT_XSAVE] =
CPUID_XSAVE_XSAVEOPT,
.features[FEAT_6_EAX] =
CPUID_6_EAX_ARAT,
.xlevel = 0x80000008,
.model_id = "Intel Core Processor (Haswell, no TSX)",
}, {
.name = "Haswell",
.level = 0xd,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 60,
.stepping = 1,
.features[FEAT_1_EDX] =
CPUID_VME | 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,
.features[FEAT_1_ECX] =
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 | CPUID_EXT_F16C | CPUID_EXT_RDRAND,
.features[FEAT_8000_0001_EDX] =
CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
CPUID_EXT2_SYSCALL,
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_ABM | CPUID_EXT3_LAHF_LM,
.features[FEAT_7_0_EBX] =
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,
.features[FEAT_XSAVE] =
CPUID_XSAVE_XSAVEOPT,
.features[FEAT_6_EAX] =
CPUID_6_EAX_ARAT,
.xlevel = 0x80000008,
.model_id = "Intel Core Processor (Haswell)",
},
{
.name = "Broadwell-noTSX",
.level = 0xd,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 61,
.stepping = 2,
.features[FEAT_1_EDX] =
CPUID_VME | 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,
.features[FEAT_1_ECX] =
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 | CPUID_EXT_F16C | CPUID_EXT_RDRAND,
.features[FEAT_8000_0001_EDX] =
CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
CPUID_EXT2_SYSCALL,
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_ABM | CPUID_EXT3_LAHF_LM | CPUID_EXT3_3DNOWPREFETCH,
.features[FEAT_7_0_EBX] =
CPUID_7_0_EBX_FSGSBASE | CPUID_7_0_EBX_BMI1 |
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_RDSEED | CPUID_7_0_EBX_ADX |
CPUID_7_0_EBX_SMAP,
.features[FEAT_XSAVE] =
CPUID_XSAVE_XSAVEOPT,
.features[FEAT_6_EAX] =
CPUID_6_EAX_ARAT,
.xlevel = 0x80000008,
.model_id = "Intel Core Processor (Broadwell, no TSX)",
},
{
.name = "Broadwell",
.level = 0xd,
.vendor = CPUID_VENDOR_INTEL,
.family = 6,
.model = 61,
.stepping = 2,
.features[FEAT_1_EDX] =
CPUID_VME | 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,
.features[FEAT_1_ECX] =
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 | CPUID_EXT_F16C | CPUID_EXT_RDRAND,
.features[FEAT_8000_0001_EDX] =
CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX |
CPUID_EXT2_SYSCALL,
.features[FEAT_8000_0001_ECX] =
CPUID_EXT3_ABM | CPUID_EXT3_LAHF_LM | CPUID_EXT3_3DNOWPREFETCH,
.features[FEAT_7_0_EBX] =
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 | CPUID_7_0_EBX_RDSEED | CPUID_7_0_EBX_ADX |
CPUID_7_0_EBX_SMAP,
.features[FEAT_XSAVE] =
CPUID_XSAVE_XSAVEOPT,
.features[FEAT_6_EAX] =
CPUID_6_EAX_ARAT,
.xlevel = 0x80000008,
.model_id = "Intel Core Processor (Broadwell)",
},
{
.name = "Opteron_G1",
.level = 5,
.vendor = CPUID_VENDOR_AMD,
.family = 15,
.model = 6,
.stepping = 1,
.features[FEAT_1_EDX] =
CPUID_VME | 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,
.features[FEAT_1_ECX] =
CPUID_EXT_SSE3,
.features[FEAT_8000_0001_EDX] =
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[FEAT_1_EDX] =
CPUID_VME | 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,
.features[FEAT_1_ECX] =
CPUID_EXT_CX16 | CPUID_EXT_SSE3,
/* Missing: CPUID_EXT2_RDTSCP */
.features[FEAT_8000_0001_EDX] =
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,
.features[FEAT_8000_0001_ECX] =
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[FEAT_1_EDX] =
CPUID_VME | 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,
.features[FEAT_1_ECX] =
CPUID_EXT_POPCNT | CPUID_EXT_CX16 | CPUID_EXT_MONITOR |
CPUID_EXT_SSE3,
/* Missing: CPUID_EXT2_RDTSCP */
.features[FEAT_8000_0001_EDX] =
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,
.features[FEAT_8000_0001_ECX] =
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[FEAT_1_EDX] =
CPUID_VME | 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,
.features[FEAT_1_ECX] =
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,
/* Missing: CPUID_EXT2_RDTSCP */
.features[FEAT_8000_0001_EDX] =
CPUID_EXT2_LM |
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,
.features[FEAT_8000_0001_ECX] =
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,
/* no xsaveopt! */
.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[FEAT_1_EDX] =
CPUID_VME | 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,
.features[FEAT_1_ECX] =
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,
/* Missing: CPUID_EXT2_RDTSCP */
.features[FEAT_8000_0001_EDX] =
CPUID_EXT2_LM |
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,
.features[FEAT_8000_0001_ECX] =
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,
/* no xsaveopt! */
.xlevel = 0x8000001A,
.model_id = "AMD Opteron 63xx class CPU",
},
};
typedef struct PropValue {
const char *prop, *value;
} PropValue;
/* KVM-specific features that are automatically added/removed
* from all CPU models when KVM is enabled.
*/
static PropValue kvm_default_props[] = {
{ "kvmclock", "on" },
{ "kvm-nopiodelay", "on" },
{ "kvm-asyncpf", "on" },
{ "kvm-steal-time", "on" },
{ "kvm-pv-eoi", "on" },
{ "kvmclock-stable-bit", "on" },
{ "x2apic", "on" },
{ "acpi", "off" },
{ "monitor", "off" },
{ "svm", "off" },
{ NULL, NULL },
};
void x86_cpu_change_kvm_default(const char *prop, const char *value)
{
PropValue *pv;
for (pv = kvm_default_props; pv->prop; pv++) {
if (!strcmp(pv->prop, prop)) {
pv->value = value;
break;
}
}
/* It is valid to call this function only for properties that
* are already present in the kvm_default_props table.
*/
assert(pv->prop);
}
static uint32_t x86_cpu_get_supported_feature_word(FeatureWord w,
bool migratable_only);
#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;
}
static X86CPUDefinition host_cpudef;
static Property host_x86_cpu_properties[] = {
DEFINE_PROP_BOOL("migratable", X86CPU, migratable, true),
DEFINE_PROP_BOOL("host-cache-info", X86CPU, cache_info_passthrough, false),
DEFINE_PROP_END_OF_LIST()
};
/* class_init for the "host" CPU model
*
* This function may be called before KVM is initialized.
*/
static void host_x86_cpu_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
X86CPUClass *xcc = X86_CPU_CLASS(oc);
uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
xcc->kvm_required = true;
host_cpuid(0x0, 0, &eax, &ebx, &ecx, &edx);
x86_cpu_vendor_words2str(host_cpudef.vendor, ebx, edx, ecx);
host_cpuid(0x1, 0, &eax, &ebx, &ecx, &edx);
host_cpudef.family = ((eax >> 8) & 0x0F) + ((eax >> 20) & 0xFF);
host_cpudef.model = ((eax >> 4) & 0x0F) | ((eax & 0xF0000) >> 12);
host_cpudef.stepping = eax & 0x0F;
cpu_x86_fill_model_id(host_cpudef.model_id);
xcc->cpu_def = &host_cpudef;
/* level, xlevel, xlevel2, and the feature words are initialized on
* instance_init, because they require KVM to be initialized.
*/
dc->props = host_x86_cpu_properties;
qdev: Protect device-list-properties against broken devices Several devices don't survive object_unref(object_new(T)): they crash or hang during cleanup, or they leave dangling pointers behind. This breaks at least device-list-properties, because qmp_device_list_properties() needs to create a device to find its properties. Broken in commit f4eb32b "qmp: show QOM properties in device-list-properties", v2.1. Example reproducer: $ qemu-system-aarch64 -nodefaults -display none -machine none -S -qmp stdio {"QMP": {"version": {"qemu": {"micro": 50, "minor": 4, "major": 2}, "package": ""}, "capabilities": []}} { "execute": "qmp_capabilities" } {"return": {}} { "execute": "device-list-properties", "arguments": { "typename": "pxa2xx-pcmcia" } } qemu-system-aarch64: /home/armbru/work/qemu/memory.c:1307: memory_region_finalize: Assertion `((&mr->subregions)->tqh_first == ((void *)0))' failed. Aborted (core dumped) [Exit 134 (SIGABRT)] Unfortunately, I can't fix the problems in these devices right now. Instead, add DeviceClass member cannot_destroy_with_object_finalize_yet to mark them: * Hang during cleanup (didn't debug, so I can't say why): "realview_pci", "versatile_pci". * Dangling pointer in cpus: most CPUs, plus "allwinner-a10", "digic", "fsl,imx25", "fsl,imx31", "xlnx,zynqmp", because they create such CPUs * Assert kvm_enabled(): "host-x86_64-cpu", host-i386-cpu", "host-powerpc64-cpu", "host-embedded-powerpc-cpu", "host-powerpc-cpu" (the powerpc ones can't currently reach the assertion, because the CPUs are only registered when KVM is enabled, but the assertion is arguably in the wrong place all the same) Make qmp_device_list_properties() fail cleanly when the device is so marked. This improves device-list-properties from "crashes, hangs or leaves dangling pointers behind" to "fails". Not a complete fix, just a better-than-nothing work-around. In the above reproducer, device-list-properties now fails with "Can't list properties of device 'pxa2xx-pcmcia'". This also protects -device FOO,help, which uses the same machinery since commit ef52358 "qdev-monitor: include QOM properties in -device FOO, help output", v2.2. Example reproducer: $ qemu-system-aarch64 -machine none -device pxa2xx-pcmcia,help Before: qemu-system-aarch64: .../memory.c:1307: memory_region_finalize: Assertion `((&mr->subregions)->tqh_first == ((void *)0))' failed. After: Can't list properties of device 'pxa2xx-pcmcia' Cc: "Andreas Färber" <afaerber@suse.de> Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com> Cc: Alexander Graf <agraf@suse.de> Cc: Anthony Green <green@moxielogic.com> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Cc: Blue Swirl <blauwirbel@gmail.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Jia Liu <proljc@gmail.com> Cc: Leon Alrae <leon.alrae@imgtec.com> Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Walle <michael@walle.cc> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Richard Henderson <rth@twiddle.net> Cc: qemu-ppc@nongnu.org Cc: qemu-stable@nongnu.org Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <1443689999-12182-10-git-send-email-armbru@redhat.com>
2015-10-01 10:59:58 +02:00
/* Reason: host_x86_cpu_initfn() dies when !kvm_enabled() */
dc->cannot_destroy_with_object_finalize_yet = true;
}
static void host_x86_cpu_initfn(Object *obj)
{
X86CPU *cpu = X86_CPU(obj);
CPUX86State *env = &cpu->env;
KVMState *s = kvm_state;
assert(kvm_enabled());
/* We can't fill the features array here because we don't know yet if
* "migratable" is true or false.
*/
cpu->host_features = true;
env->cpuid_level = kvm_arch_get_supported_cpuid(s, 0x0, 0, R_EAX);
env->cpuid_xlevel = kvm_arch_get_supported_cpuid(s, 0x80000000, 0, R_EAX);
env->cpuid_xlevel2 = kvm_arch_get_supported_cpuid(s, 0xC0000000, 0, R_EAX);
object_property_set_bool(OBJECT(cpu), true, "pmu", &error_abort);
}
static const TypeInfo host_x86_cpu_type_info = {
.name = X86_CPU_TYPE_NAME("host"),
.parent = TYPE_X86_CPU,
.instance_init = host_x86_cpu_initfn,
.class_init = host_x86_cpu_class_init,
};
#endif
static void report_unavailable_features(FeatureWord w, uint32_t mask)
{
FeatureWordInfo *f = &feature_word_info[w];
int i;
for (i = 0; i < 32; ++i) {
if ((1UL << i) & mask) {
const char *reg = get_register_name_32(f->cpuid_reg);
target-i386: check/enforce: Fix CPUID leaf numbers on error messages The -cpu check/enforce warnings are printing incorrect information about the missing flags. There are no feature flags on CPUID leaves 0 and 0x80000000, but there were references to 0 and 0x80000000 in the table at kvm_check_features_against_host(). This changes the model_features_t struct to contain the register number as well, so the error messages print the correct CPUID leaf+register information, instead of wrong CPUID leaf numbers. This also changes the format of the error messages, so they follow the "CPUID.<leaf>.<register>.<name> [bit <offset>]" convention used in Intel documentation. Example output: $ qemu-system-x86_64 -machine pc-1.0,accel=kvm -cpu Opteron_G4,+ia64,enforce warning: host doesn't support requested feature: CPUID.01H:EDX.ia64 [bit 30] warning: host doesn't support requested feature: CPUID.01H:ECX.xsave [bit 26] warning: host doesn't support requested feature: CPUID.01H:ECX.avx [bit 28] warning: host doesn't support requested feature: CPUID.80000001H:ECX.abm [bit 5] warning: host doesn't support requested feature: CPUID.80000001H:ECX.sse4a [bit 6] warning: host doesn't support requested feature: CPUID.80000001H:ECX.misalignsse [bit 7] warning: host doesn't support requested feature: CPUID.80000001H:ECX.3dnowprefetch [bit 8] warning: host doesn't support requested feature: CPUID.80000001H:ECX.xop [bit 11] warning: host doesn't support requested feature: CPUID.80000001H:ECX.fma4 [bit 16] Unable to find x86 CPU definition $ Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-01-04 23:01:06 +01:00
assert(reg);
fprintf(stderr, "warning: %s doesn't support requested feature: "
target-i386: check/enforce: Fix CPUID leaf numbers on error messages The -cpu check/enforce warnings are printing incorrect information about the missing flags. There are no feature flags on CPUID leaves 0 and 0x80000000, but there were references to 0 and 0x80000000 in the table at kvm_check_features_against_host(). This changes the model_features_t struct to contain the register number as well, so the error messages print the correct CPUID leaf+register information, instead of wrong CPUID leaf numbers. This also changes the format of the error messages, so they follow the "CPUID.<leaf>.<register>.<name> [bit <offset>]" convention used in Intel documentation. Example output: $ qemu-system-x86_64 -machine pc-1.0,accel=kvm -cpu Opteron_G4,+ia64,enforce warning: host doesn't support requested feature: CPUID.01H:EDX.ia64 [bit 30] warning: host doesn't support requested feature: CPUID.01H:ECX.xsave [bit 26] warning: host doesn't support requested feature: CPUID.01H:ECX.avx [bit 28] warning: host doesn't support requested feature: CPUID.80000001H:ECX.abm [bit 5] warning: host doesn't support requested feature: CPUID.80000001H:ECX.sse4a [bit 6] warning: host doesn't support requested feature: CPUID.80000001H:ECX.misalignsse [bit 7] warning: host doesn't support requested feature: CPUID.80000001H:ECX.3dnowprefetch [bit 8] warning: host doesn't support requested feature: CPUID.80000001H:ECX.xop [bit 11] warning: host doesn't support requested feature: CPUID.80000001H:ECX.fma4 [bit 16] Unable to find x86 CPU definition $ Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-01-04 23:01:06 +01:00
"CPUID.%02XH:%s%s%s [bit %d]\n",
kvm_enabled() ? "host" : "TCG",
f->cpuid_eax, reg,
f->feat_names[i] ? "." : "",
f->feat_names[i] ? f->feat_names[i] : "", i);
}
}
}
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;
Error *local_err = NULL;
int64_t value;
visit_type_int(v, &value, name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
if (value < min || value > max) {
error_setg(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;
Error *local_err = NULL;
int64_t value;
visit_type_int(v, &value, name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
if (value < min || value > max) {
error_setg(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;
Error *local_err = NULL;
int64_t value;
visit_type_int(v, &value, name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
if (value < min || value > max) {
error_setg(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
name ? name : "null", value, min, max);
return;
}
env->cpuid_version &= ~0xf;
env->cpuid_version |= value & 0xf;
}
static char *x86_cpuid_get_vendor(Object *obj, Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
CPUX86State *env = &cpu->env;
char *value;
value = 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_setg(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;
Error *local_err = NULL;
int64_t value;
visit_type_int(v, &value, name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
if (value < min || value > max) {
error_setg(errp, QERR_PROPERTY_VALUE_OUT_OF_RANGE, "",
name ? name : "null", value, min, max);
return;
}
cpu->env.tsc_khz = cpu->env.user_tsc_khz = value / 1000;
}
static void x86_cpuid_get_apic_id(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
int64_t value = cpu->apic_id;
visit_type_int(v, &value, name, errp);
}
static void x86_cpuid_set_apic_id(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
DeviceState *dev = DEVICE(obj);
const int64_t min = 0;
const int64_t max = UINT32_MAX;
Error *error = NULL;
int64_t value;
if (dev->realized) {
error_setg(errp, "Attempt to set property '%s' on '%s' after "
"it was realized", name, object_get_typename(obj));
return;
}
visit_type_int(v, &value, name, &error);
if (error) {
error_propagate(errp, error);
return;
}
if (value < min || value > max) {
error_setg(errp, "Property %s.%s doesn't take value %" PRId64
" (minimum: %" PRId64 ", maximum: %" PRId64 ")" ,
object_get_typename(obj), name, value, min, max);
return;
}
if ((value != cpu->apic_id) && cpu_exists(value)) {
error_setg(errp, "CPU with APIC ID %" PRIi64 " exists", value);
return;
}
cpu->apic_id = value;
}
target-i386: Add "filtered-features" property to X86CPU This property will contain all the features that were removed from the CPU because they are not supported by the host. This way, libvirt or other management tools can emulate the check/enforce behavior by checking if filtered-properties is all zeroes, before starting the guest. Example output where some features were missing: $ qemu-system-x86_64 -enable-kvm -cpu Haswell,check -S \ -qmp unix:/tmp/m,server,nowait warning: host doesn't support requested feature: CPUID.01H:ECX.fma [bit 12] warning: host doesn't support requested feature: CPUID.01H:ECX.movbe [bit 22] warning: host doesn't support requested feature: CPUID.01H:ECX.tsc-deadline [bit 24] warning: host doesn't support requested feature: CPUID.01H:ECX.xsave [bit 26] warning: host doesn't support requested feature: CPUID.01H:ECX.avx [bit 28] warning: host doesn't support requested feature: CPUID.07H:EBX.fsgsbase [bit 0] warning: host doesn't support requested feature: CPUID.07H:EBX.bmi1 [bit 3] warning: host doesn't support requested feature: CPUID.07H:EBX.hle [bit 4] warning: host doesn't support requested feature: CPUID.07H:EBX.avx2 [bit 5] warning: host doesn't support requested feature: CPUID.07H:EBX.smep [bit 7] warning: host doesn't support requested feature: CPUID.07H:EBX.bmi2 [bit 8] warning: host doesn't support requested feature: CPUID.07H:EBX.erms [bit 9] warning: host doesn't support requested feature: CPUID.07H:EBX.invpcid [bit 10] warning: host doesn't support requested feature: CPUID.07H:EBX.rtm [bit 11] [...] $ ./QMP/qmp --path=/tmp/m \ qom-get --path=/machine/icc-bridge/icc/child[0] \ --property=filtered-features item[0].cpuid-register: EDX item[0].cpuid-input-eax: 2147483658 item[0].features: 0 item[1].cpuid-register: EAX item[1].cpuid-input-eax: 1073741825 item[1].features: 0 item[2].cpuid-register: EDX item[2].cpuid-input-eax: 3221225473 item[2].features: 0 item[3].cpuid-register: ECX item[3].cpuid-input-eax: 2147483649 item[3].features: 0 item[4].cpuid-register: EDX item[4].cpuid-input-eax: 2147483649 item[4].features: 0 item[5].cpuid-register: EBX item[5].cpuid-input-eax: 7 item[5].features: 4025 item[5].cpuid-input-ecx: 0 item[6].cpuid-register: ECX item[6].cpuid-input-eax: 1 item[6].features: 356519936 item[7].cpuid-register: EDX item[7].cpuid-input-eax: 1 item[7].features: 0 Example output when no feature is missing: $ qemu-system-x86_64 -enable-kvm -cpu Nehalem,enforce -S \ -qmp unix:/tmp/m,server,nowait [...] $ ./QMP/qmp --path=/tmp/m \ qom-get --path=/machine/icc-bridge/icc/child[0] \ --property=filtered-features item[0].cpuid-register: EDX item[0].cpuid-input-eax: 2147483658 item[0].features: 0 item[1].cpuid-register: EAX item[1].cpuid-input-eax: 1073741825 item[1].features: 0 item[2].cpuid-register: EDX item[2].cpuid-input-eax: 3221225473 item[2].features: 0 item[3].cpuid-register: ECX item[3].cpuid-input-eax: 2147483649 item[3].features: 0 item[4].cpuid-register: EDX item[4].cpuid-input-eax: 2147483649 item[4].features: 0 item[5].cpuid-register: EBX item[5].cpuid-input-eax: 7 item[5].features: 0 item[5].cpuid-input-ecx: 0 item[6].cpuid-register: ECX item[6].cpuid-input-eax: 1 item[6].features: 0 item[7].cpuid-register: EDX item[7].cpuid-input-eax: 1 item[7].features: 0 Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-05-06 18:20:09 +02:00
/* Generic getter for "feature-words" and "filtered-features" properties */
static void x86_cpu_get_feature_words(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
target-i386: Add "filtered-features" property to X86CPU This property will contain all the features that were removed from the CPU because they are not supported by the host. This way, libvirt or other management tools can emulate the check/enforce behavior by checking if filtered-properties is all zeroes, before starting the guest. Example output where some features were missing: $ qemu-system-x86_64 -enable-kvm -cpu Haswell,check -S \ -qmp unix:/tmp/m,server,nowait warning: host doesn't support requested feature: CPUID.01H:ECX.fma [bit 12] warning: host doesn't support requested feature: CPUID.01H:ECX.movbe [bit 22] warning: host doesn't support requested feature: CPUID.01H:ECX.tsc-deadline [bit 24] warning: host doesn't support requested feature: CPUID.01H:ECX.xsave [bit 26] warning: host doesn't support requested feature: CPUID.01H:ECX.avx [bit 28] warning: host doesn't support requested feature: CPUID.07H:EBX.fsgsbase [bit 0] warning: host doesn't support requested feature: CPUID.07H:EBX.bmi1 [bit 3] warning: host doesn't support requested feature: CPUID.07H:EBX.hle [bit 4] warning: host doesn't support requested feature: CPUID.07H:EBX.avx2 [bit 5] warning: host doesn't support requested feature: CPUID.07H:EBX.smep [bit 7] warning: host doesn't support requested feature: CPUID.07H:EBX.bmi2 [bit 8] warning: host doesn't support requested feature: CPUID.07H:EBX.erms [bit 9] warning: host doesn't support requested feature: CPUID.07H:EBX.invpcid [bit 10] warning: host doesn't support requested feature: CPUID.07H:EBX.rtm [bit 11] [...] $ ./QMP/qmp --path=/tmp/m \ qom-get --path=/machine/icc-bridge/icc/child[0] \ --property=filtered-features item[0].cpuid-register: EDX item[0].cpuid-input-eax: 2147483658 item[0].features: 0 item[1].cpuid-register: EAX item[1].cpuid-input-eax: 1073741825 item[1].features: 0 item[2].cpuid-register: EDX item[2].cpuid-input-eax: 3221225473 item[2].features: 0 item[3].cpuid-register: ECX item[3].cpuid-input-eax: 2147483649 item[3].features: 0 item[4].cpuid-register: EDX item[4].cpuid-input-eax: 2147483649 item[4].features: 0 item[5].cpuid-register: EBX item[5].cpuid-input-eax: 7 item[5].features: 4025 item[5].cpuid-input-ecx: 0 item[6].cpuid-register: ECX item[6].cpuid-input-eax: 1 item[6].features: 356519936 item[7].cpuid-register: EDX item[7].cpuid-input-eax: 1 item[7].features: 0 Example output when no feature is missing: $ qemu-system-x86_64 -enable-kvm -cpu Nehalem,enforce -S \ -qmp unix:/tmp/m,server,nowait [...] $ ./QMP/qmp --path=/tmp/m \ qom-get --path=/machine/icc-bridge/icc/child[0] \ --property=filtered-features item[0].cpuid-register: EDX item[0].cpuid-input-eax: 2147483658 item[0].features: 0 item[1].cpuid-register: EAX item[1].cpuid-input-eax: 1073741825 item[1].features: 0 item[2].cpuid-register: EDX item[2].cpuid-input-eax: 3221225473 item[2].features: 0 item[3].cpuid-register: ECX item[3].cpuid-input-eax: 2147483649 item[3].features: 0 item[4].cpuid-register: EDX item[4].cpuid-input-eax: 2147483649 item[4].features: 0 item[5].cpuid-register: EBX item[5].cpuid-input-eax: 7 item[5].features: 0 item[5].cpuid-input-ecx: 0 item[6].cpuid-register: ECX item[6].cpuid-input-eax: 1 item[6].features: 0 item[7].cpuid-register: EDX item[7].cpuid-input-eax: 1 item[7].features: 0 Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-05-06 18:20:09 +02:00
uint32_t *array = (uint32_t *)opaque;
FeatureWord w;
Error *err = NULL;
X86CPUFeatureWordInfo word_infos[FEATURE_WORDS] = { };
X86CPUFeatureWordInfoList list_entries[FEATURE_WORDS] = { };
X86CPUFeatureWordInfoList *list = NULL;
for (w = 0; w < FEATURE_WORDS; w++) {
FeatureWordInfo *wi = &feature_word_info[w];
X86CPUFeatureWordInfo *qwi = &word_infos[w];
qwi->cpuid_input_eax = wi->cpuid_eax;
qwi->has_cpuid_input_ecx = wi->cpuid_needs_ecx;
qwi->cpuid_input_ecx = wi->cpuid_ecx;
qwi->cpuid_register = x86_reg_info_32[wi->cpuid_reg].qapi_enum;
target-i386: Add "filtered-features" property to X86CPU This property will contain all the features that were removed from the CPU because they are not supported by the host. This way, libvirt or other management tools can emulate the check/enforce behavior by checking if filtered-properties is all zeroes, before starting the guest. Example output where some features were missing: $ qemu-system-x86_64 -enable-kvm -cpu Haswell,check -S \ -qmp unix:/tmp/m,server,nowait warning: host doesn't support requested feature: CPUID.01H:ECX.fma [bit 12] warning: host doesn't support requested feature: CPUID.01H:ECX.movbe [bit 22] warning: host doesn't support requested feature: CPUID.01H:ECX.tsc-deadline [bit 24] warning: host doesn't support requested feature: CPUID.01H:ECX.xsave [bit 26] warning: host doesn't support requested feature: CPUID.01H:ECX.avx [bit 28] warning: host doesn't support requested feature: CPUID.07H:EBX.fsgsbase [bit 0] warning: host doesn't support requested feature: CPUID.07H:EBX.bmi1 [bit 3] warning: host doesn't support requested feature: CPUID.07H:EBX.hle [bit 4] warning: host doesn't support requested feature: CPUID.07H:EBX.avx2 [bit 5] warning: host doesn't support requested feature: CPUID.07H:EBX.smep [bit 7] warning: host doesn't support requested feature: CPUID.07H:EBX.bmi2 [bit 8] warning: host doesn't support requested feature: CPUID.07H:EBX.erms [bit 9] warning: host doesn't support requested feature: CPUID.07H:EBX.invpcid [bit 10] warning: host doesn't support requested feature: CPUID.07H:EBX.rtm [bit 11] [...] $ ./QMP/qmp --path=/tmp/m \ qom-get --path=/machine/icc-bridge/icc/child[0] \ --property=filtered-features item[0].cpuid-register: EDX item[0].cpuid-input-eax: 2147483658 item[0].features: 0 item[1].cpuid-register: EAX item[1].cpuid-input-eax: 1073741825 item[1].features: 0 item[2].cpuid-register: EDX item[2].cpuid-input-eax: 3221225473 item[2].features: 0 item[3].cpuid-register: ECX item[3].cpuid-input-eax: 2147483649 item[3].features: 0 item[4].cpuid-register: EDX item[4].cpuid-input-eax: 2147483649 item[4].features: 0 item[5].cpuid-register: EBX item[5].cpuid-input-eax: 7 item[5].features: 4025 item[5].cpuid-input-ecx: 0 item[6].cpuid-register: ECX item[6].cpuid-input-eax: 1 item[6].features: 356519936 item[7].cpuid-register: EDX item[7].cpuid-input-eax: 1 item[7].features: 0 Example output when no feature is missing: $ qemu-system-x86_64 -enable-kvm -cpu Nehalem,enforce -S \ -qmp unix:/tmp/m,server,nowait [...] $ ./QMP/qmp --path=/tmp/m \ qom-get --path=/machine/icc-bridge/icc/child[0] \ --property=filtered-features item[0].cpuid-register: EDX item[0].cpuid-input-eax: 2147483658 item[0].features: 0 item[1].cpuid-register: EAX item[1].cpuid-input-eax: 1073741825 item[1].features: 0 item[2].cpuid-register: EDX item[2].cpuid-input-eax: 3221225473 item[2].features: 0 item[3].cpuid-register: ECX item[3].cpuid-input-eax: 2147483649 item[3].features: 0 item[4].cpuid-register: EDX item[4].cpuid-input-eax: 2147483649 item[4].features: 0 item[5].cpuid-register: EBX item[5].cpuid-input-eax: 7 item[5].features: 0 item[5].cpuid-input-ecx: 0 item[6].cpuid-register: ECX item[6].cpuid-input-eax: 1 item[6].features: 0 item[7].cpuid-register: EDX item[7].cpuid-input-eax: 1 item[7].features: 0 Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-05-06 18:20:09 +02:00
qwi->features = array[w];
/* List will be in reverse order, but order shouldn't matter */
list_entries[w].next = list;
list_entries[w].value = &word_infos[w];
list = &list_entries[w];
}
visit_type_X86CPUFeatureWordInfoList(v, &list, "feature-words", &err);
error_propagate(errp, err);
}
static void x86_get_hv_spinlocks(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
X86CPU *cpu = X86_CPU(obj);
int64_t value = cpu->hyperv_spinlock_attempts;
visit_type_int(v, &value, name, errp);
}
static void x86_set_hv_spinlocks(Object *obj, Visitor *v, void *opaque,
const char *name, Error **errp)
{
const int64_t min = 0xFFF;
const int64_t max = UINT_MAX;
X86CPU *cpu = X86_CPU(obj);
Error *err = NULL;
int64_t value;
visit_type_int(v, &value, name, &err);
if (err) {
error_propagate(errp, err);
return;
}
if (value < min || value > max) {
error_setg(errp, "Property %s.%s doesn't take value %" PRId64
" (minimum: %" PRId64 ", maximum: %" PRId64 ")",
object_get_typename(obj), name ? name : "null",
value, min, max);
return;
}
cpu->hyperv_spinlock_attempts = value;
}
static PropertyInfo qdev_prop_spinlocks = {
.name = "int",
.get = x86_get_hv_spinlocks,
.set = x86_set_hv_spinlocks,
};
/* Convert all '_' in a feature string option name to '-', to make feature
* name conform to QOM property naming rule, which uses '-' instead of '_'.
*/
static inline void feat2prop(char *s)
{
while ((s = strchr(s, '_'))) {
*s = '-';
}
}
/* Parse "+feature,-feature,feature=foo" CPU feature string
*/
static void x86_cpu_parse_featurestr(CPUState *cs, char *features,
Error **errp)
{
X86CPU *cpu = X86_CPU(cs);
char *featurestr; /* Single 'key=value" string being parsed */
FeatureWord w;
/* Features to be added */
FeatureWordArray plus_features = { 0 };
/* Features to be removed */
FeatureWordArray minus_features = { 0 };
uint32_t numvalue;
CPUX86State *env = &cpu->env;
Error *local_err = NULL;
featurestr = features ? strtok(features, ",") : NULL;
while (featurestr) {
char *val;
if (featurestr[0] == '+') {
add_flagname_to_bitmaps(featurestr + 1, plus_features, &local_err);
} else if (featurestr[0] == '-') {
add_flagname_to_bitmaps(featurestr + 1, minus_features, &local_err);
} else if ((val = strchr(featurestr, '='))) {
*val = 0; val++;
feat2prop(featurestr);
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);
return;
}
if (numvalue < 0x80000000) {
error_report("xlevel value shall always be >= 0x80000000"
", fixup will be removed in future versions");
numvalue += 0x80000000;
}
snprintf(num, sizeof(num), "%" PRIu32, numvalue);
object_property_parse(OBJECT(cpu), num, featurestr, &local_err);
} else if (!strcmp(featurestr, "tsc-freq")) {
int64_t tsc_freq;
char *err;
char num[32];
tsc_freq = qemu_strtosz_suffix_unit(val, &err,
QEMU_STRTOSZ_DEFSUFFIX_B, 1000);
if (tsc_freq < 0 || *err) {
error_setg(errp, "bad numerical value %s", val);
return;
}
snprintf(num, sizeof(num), "%" PRId64, tsc_freq);
object_property_parse(OBJECT(cpu), num, "tsc-frequency",
&local_err);
} else if (!strcmp(featurestr, "hv-spinlocks")) {
char *err;
const int min = 0xFFF;
char num[32];
numvalue = strtoul(val, &err, 0);
if (!*val || *err) {
error_setg(errp, "bad numerical value %s", val);
return;
}
if (numvalue < min) {
error_report("hv-spinlocks value shall always be >= 0x%x"
", fixup will be removed in future versions",
min);
numvalue = min;
}
snprintf(num, sizeof(num), "%" PRId32, numvalue);
object_property_parse(OBJECT(cpu), num, featurestr, &local_err);
} else {
object_property_parse(OBJECT(cpu), val, featurestr, &local_err);
}
} else {
feat2prop(featurestr);
object_property_parse(OBJECT(cpu), "on", featurestr, &local_err);
}
if (local_err) {
error_propagate(errp, local_err);
return;
}
featurestr = strtok(NULL, ",");
}
if (cpu->host_features) {
for (w = 0; w < FEATURE_WORDS; w++) {
env->features[w] =
x86_cpu_get_supported_feature_word(w, cpu->migratable);
}
}
for (w = 0; w < FEATURE_WORDS; w++) {
env->features[w] |= plus_features[w];
env->features[w] &= ~minus_features[w];
}
}
/* Print all cpuid feature names in featureset
*/
static void listflags(FILE *f, fprintf_function print, const char **featureset)
{
int bit;
bool first = true;
for (bit = 0; bit < 32; bit++) {
if (featureset[bit]) {
print(f, "%s%s", first ? "" : " ", featureset[bit]);
first = false;
}
}
}
/* generate CPU information. */
void x86_cpu_list(FILE *f, fprintf_function cpu_fprintf)
{
X86CPUDefinition *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);
}
#ifdef CONFIG_KVM
(*cpu_fprintf)(f, "x86 %16s %-48s\n", "host",
"KVM processor with all supported host features "
"(only available in KVM mode)");
#endif
(*cpu_fprintf)(f, "\nRecognized CPUID flags:\n");
for (i = 0; i < ARRAY_SIZE(feature_word_info); i++) {
FeatureWordInfo *fw = &feature_word_info[i];
(*cpu_fprintf)(f, " ");
listflags(f, cpu_fprintf, fw->feat_names);
(*cpu_fprintf)(f, "\n");
}
}
CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
{
CpuDefinitionInfoList *cpu_list = NULL;
X86CPUDefinition *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;
}
static uint32_t x86_cpu_get_supported_feature_word(FeatureWord w,
bool migratable_only)
{
FeatureWordInfo *wi = &feature_word_info[w];
uint32_t r;
if (kvm_enabled()) {
r = kvm_arch_get_supported_cpuid(kvm_state, wi->cpuid_eax,
wi->cpuid_ecx,
wi->cpuid_reg);
} else if (tcg_enabled()) {
r = wi->tcg_features;
} else {
return ~0;
}
if (migratable_only) {
r &= x86_cpu_get_migratable_flags(w);
}
return r;
}
/*
* Filters CPU feature words based on host availability of each feature.
*
* Returns: 0 if all flags are supported by the host, non-zero otherwise.
*/
static int x86_cpu_filter_features(X86CPU *cpu)
i386: kvm: filter CPUID feature words earlier, on cpu.c cpu.c contains the code that will check if all requested CPU features are available, so the filtering of KVM features must be there, so we can implement "check" and "enforce" properly. The only point where kvm_arch_init_vcpu() is called on i386 is: - cpu_x86_init() - x86_cpu_realize() (after cpu_x86_register() is called) - qemu_init_vcpu() - qemu_kvm_start_vcpu() - qemu_kvm_thread_fn() (on a new thread) - kvm_init_vcpu() - kvm_arch_init_vcpu() With this patch, the filtering will be done earlier, at: - cpu_x86_init() - cpu_x86_register() (before x86_cpu_realize() is called) Also, the KVM CPUID filtering will now be done at the same place where the TCG CPUID feature filtering is done. Later, the code can be changed to use the same filtering code for the "check" and "enforce" modes, as now the cpu.c code knows exactly which CPU features are going to be exposed to the guest (and much earlier). One thing I was worrying about when doing this is that kvm_arch_get_supported_cpuid() depends on kvm_irqchip_in_kernel(), and maybe the 'kvm_kernel_irqchip' global variable wasn't initialized yet at CPU creation time. But kvm_kernel_irqchip is initialized during kvm_init(), that is called very early (much earlier than the machine init function), and kvm_init() is already a requirement to run the GET_SUPPORTED_CPUID ioctl() (as kvm_init() initializes the kvm_state global variable). Side note: it would be nice to keep KVM-specific code inside kvm.c. The problem is that properly implementing -cpu check/enforce code (that's inside cpu.c) depends directly on the feature bit filtering done using kvm_arch_get_supported_cpuid(). Currently -cpu check/enforce is broken because it simply uses the host CPU feature bits instead of GET_SUPPORTED_CPUID, and we need to fix that. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-10-04 22:49:05 +02:00
{
CPUX86State *env = &cpu->env;
FeatureWord w;
int rv = 0;
for (w = 0; w < FEATURE_WORDS; w++) {
uint32_t host_feat =
x86_cpu_get_supported_feature_word(w, cpu->migratable);
uint32_t requested_features = env->features[w];
env->features[w] &= host_feat;
cpu->filtered_features[w] = requested_features & ~env->features[w];
if (cpu->filtered_features[w]) {
if (cpu->check_cpuid || cpu->enforce_cpuid) {
report_unavailable_features(w, cpu->filtered_features[w]);
}
rv = 1;
}
}
return rv;
i386: kvm: filter CPUID feature words earlier, on cpu.c cpu.c contains the code that will check if all requested CPU features are available, so the filtering of KVM features must be there, so we can implement "check" and "enforce" properly. The only point where kvm_arch_init_vcpu() is called on i386 is: - cpu_x86_init() - x86_cpu_realize() (after cpu_x86_register() is called) - qemu_init_vcpu() - qemu_kvm_start_vcpu() - qemu_kvm_thread_fn() (on a new thread) - kvm_init_vcpu() - kvm_arch_init_vcpu() With this patch, the filtering will be done earlier, at: - cpu_x86_init() - cpu_x86_register() (before x86_cpu_realize() is called) Also, the KVM CPUID filtering will now be done at the same place where the TCG CPUID feature filtering is done. Later, the code can be changed to use the same filtering code for the "check" and "enforce" modes, as now the cpu.c code knows exactly which CPU features are going to be exposed to the guest (and much earlier). One thing I was worrying about when doing this is that kvm_arch_get_supported_cpuid() depends on kvm_irqchip_in_kernel(), and maybe the 'kvm_kernel_irqchip' global variable wasn't initialized yet at CPU creation time. But kvm_kernel_irqchip is initialized during kvm_init(), that is called very early (much earlier than the machine init function), and kvm_init() is already a requirement to run the GET_SUPPORTED_CPUID ioctl() (as kvm_init() initializes the kvm_state global variable). Side note: it would be nice to keep KVM-specific code inside kvm.c. The problem is that properly implementing -cpu check/enforce code (that's inside cpu.c) depends directly on the feature bit filtering done using kvm_arch_get_supported_cpuid(). Currently -cpu check/enforce is broken because it simply uses the host CPU feature bits instead of GET_SUPPORTED_CPUID, and we need to fix that. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-10-04 22:49:05 +02:00
}
static void x86_cpu_apply_props(X86CPU *cpu, PropValue *props)
{
PropValue *pv;
for (pv = props; pv->prop; pv++) {
if (!pv->value) {
continue;
}
object_property_parse(OBJECT(cpu), pv->value, pv->prop,
&error_abort);
}
}
/* Load data from X86CPUDefinition
*/
static void x86_cpu_load_def(X86CPU *cpu, X86CPUDefinition *def, Error **errp)
{
CPUX86State *env = &cpu->env;
const char *vendor;
char host_vendor[CPUID_VENDOR_SZ + 1];
FeatureWord w;
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);
object_property_set_int(OBJECT(cpu), def->xlevel, "xlevel", errp);
object_property_set_int(OBJECT(cpu), def->xlevel2, "xlevel2", errp);
object_property_set_str(OBJECT(cpu), def->model_id, "model-id", errp);
for (w = 0; w < FEATURE_WORDS; w++) {
env->features[w] = def->features[w];
}
/* Special cases not set in the X86CPUDefinition structs: */
if (kvm_enabled()) {
x86_cpu_apply_props(cpu, kvm_default_props);
}
env->features[FEAT_1_ECX] |= CPUID_EXT_HYPERVISOR;
/* 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
*/
vendor = def->vendor;
if (kvm_enabled()) {
uint32_t ebx = 0, ecx = 0, edx = 0;
host_cpuid(0, 0, NULL, &ebx, &ecx, &edx);
x86_cpu_vendor_words2str(host_vendor, ebx, edx, ecx);
vendor = host_vendor;
}
object_property_set_str(OBJECT(cpu), vendor, "vendor", errp);
}
X86CPU *cpu_x86_create(const char *cpu_model, Error **errp)
{
X86CPU *cpu = NULL;
X86CPUClass *xcc;
ObjectClass *oc;
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];
oc = x86_cpu_class_by_name(name);
if (oc == NULL) {
error_setg(&error, "Unable to find CPU definition: %s", name);
goto out;
}
xcc = X86_CPU_CLASS(oc);
if (xcc->kvm_required && !kvm_enabled()) {
error_setg(&error, "CPU model '%s' requires KVM", name);
goto out;
}
cpu = X86_CPU(object_new(object_class_get_name(oc)));
x86_cpu_parse_featurestr(CPU(cpu), features, &error);
if (error) {
goto out;
}
out:
if (error != NULL) {
error_propagate(errp, error);
if (cpu) {
object_unref(OBJECT(cpu));
cpu = NULL;
}
}
g_strfreev(model_pieces);
return cpu;
}
X86CPU *cpu_x86_init(const char *cpu_model)
{
Error *error = NULL;
X86CPU *cpu;
cpu = cpu_x86_create(cpu_model, &error);
if (error) {
goto out;
}
object_property_set_bool(OBJECT(cpu), true, "realized", &error);
out:
if (error) {
error_report_err(error);
if (cpu != NULL) {
object_unref(OBJECT(cpu));
cpu = NULL;
}
}
return cpu;
}
static void x86_cpu_cpudef_class_init(ObjectClass *oc, void *data)
{
X86CPUDefinition *cpudef = data;
X86CPUClass *xcc = X86_CPU_CLASS(oc);
xcc->cpu_def = cpudef;
}
static void x86_register_cpudef_type(X86CPUDefinition *def)
{
char *typename = x86_cpu_type_name(def->name);
TypeInfo ti = {
.name = typename,
.parent = TYPE_X86_CPU,
.class_init = x86_cpu_cpudef_class_init,
.class_data = def,
};
type_register(&ti);
g_free(typename);
}
#if !defined(CONFIG_USER_ONLY)
void cpu_clear_apic_feature(CPUX86State *env)
{
env->features[FEAT_1_EDX] &= ~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) {
X86CPUDefinition *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_hw_version());
break;
}
}
}
}
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 {
target-i386: CPUID: return highest basic leaf if eax > cpuid_xlevel This fixes a subtle bug. A bug that probably won't cause trouble for any existing OS, but a bug anyway: Intel SDM Volume 2, CPUID Instruction states: > Two types of information are returned: basic and extended function > information. If a value entered for CPUID.EAX is higher than the maximum > input value for basic or extended function for that processor then the > data for the highest basic information leaf is returned. For example, > using the Intel Core i7 processor, the following is true: > > CPUID.EAX = 05H (* Returns MONITOR/MWAIT leaf. *) > CPUID.EAX = 0AH (* Returns Architectural Performance Monitoring leaf. *) > CPUID.EAX = 0BH (* Returns Extended Topology Enumeration leaf. *) > CPUID.EAX = 0CH (* INVALID: Returns the same information as CPUID.EAX = 0BH. *) > CPUID.EAX = 80000008H (* Returns linear/physical address size data. *) > CPUID.EAX = 8000000AH (* INVALID: Returns same information as CPUID.EAX = 0BH. *) AMD's CPUID Specification, on the other hand, is less specific: > The CPUID instruction supports two sets or ranges of functions, > standard and extended. > > • The smallest function number of the standard function range is > Fn0000_0000. The largest function num- ber of the standard function > range, for a particular implementation, is returned in CPUID > Fn0000_0000_EAX. > > • The smallest function number of the extended function range is > Fn8000_0000. The largest function num- ber of the extended function > range, for a particular implementation, is returned in CPUID > Fn8000_0000_EAX. > > Functions that are neither standard nor extended are undefined and > should not be relied upon. QEMU's behavior matched Intel's specification before, but this was changed by commit b3baa152aaef1905876670590275c2dd0bbb088c. This patch restores the behavior documented by Intel when cpuid_xlevel2 is 0. The existing behavior when cpuid_xlevel2 is set (falling back to level=cpuid_xlevel) is being kept, as I couldn't find any public documentation on the CPUID 0xC0000000 function range on Centaur CPUs. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-12-20 19:43:48 +01:00
/* 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;
*ebx = env->cpuid_vendor1;
*edx = env->cpuid_vendor2;
*ecx = env->cpuid_vendor3;
break;
case 1:
*eax = env->cpuid_version;
*ebx = (cpu->apic_id << 24) |
8 << 8; /* CLFLUSH size in quad words, Linux wants it. */
*ecx = env->features[FEAT_1_ECX];
*edx = env->features[FEAT_1_EDX];
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 */
if (cpu->cache_info_passthrough) {
host_cpuid(index, 0, eax, ebx, ecx, edx);
break;
}
*eax = 1; /* Number of CPUID[EAX=2] calls required */
*ebx = 0;
*ecx = 0;
*edx = (L1D_DESCRIPTOR << 16) | \
(L1I_DESCRIPTOR << 8) | \
(L2_DESCRIPTOR);
break;
case 4:
/* cache info: needed for Core compatibility */
if (cpu->cache_info_passthrough) {
host_cpuid(index, count, eax, ebx, ecx, edx);
*eax &= ~0xFC000000;
} else {
*eax = 0;
switch (count) {
case 0: /* L1 dcache info */
*eax |= CPUID_4_TYPE_DCACHE | \
CPUID_4_LEVEL(1) | \
CPUID_4_SELF_INIT_LEVEL;
*ebx = (L1D_LINE_SIZE - 1) | \
((L1D_PARTITIONS - 1) << 12) | \
((L1D_ASSOCIATIVITY - 1) << 22);
*ecx = L1D_SETS - 1;
*edx = CPUID_4_NO_INVD_SHARING;
break;
case 1: /* L1 icache info */
*eax |= CPUID_4_TYPE_ICACHE | \
CPUID_4_LEVEL(1) | \
CPUID_4_SELF_INIT_LEVEL;
*ebx = (L1I_LINE_SIZE - 1) | \
((L1I_PARTITIONS - 1) << 12) | \
((L1I_ASSOCIATIVITY - 1) << 22);
*ecx = L1I_SETS - 1;
*edx = CPUID_4_NO_INVD_SHARING;
break;
case 2: /* L2 cache info */
*eax |= CPUID_4_TYPE_UNIFIED | \
CPUID_4_LEVEL(2) | \
CPUID_4_SELF_INIT_LEVEL;
if (cs->nr_threads > 1) {
*eax |= (cs->nr_threads - 1) << 14;
}
*ebx = (L2_LINE_SIZE - 1) | \
((L2_PARTITIONS - 1) << 12) | \
((L2_ASSOCIATIVITY - 1) << 22);
*ecx = L2_SETS - 1;
*edx = CPUID_4_NO_INVD_SHARING;
break;
default: /* end of info */
*eax = 0;
*ebx = 0;
*ecx = 0;
*edx = 0;
break;
}
}
/* QEMU gives out its own APIC IDs, never pass down bits 31..26. */
if ((*eax & 31) && cs->nr_cores > 1) {
*eax |= (cs->nr_cores - 1) << 26;
}
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 = env->features[FEAT_6_EAX];
*ebx = 0;
*ecx = 0;
*edx = 0;
break;
case 7:
Expose CPUID leaf 7 only for -cpu host Changes v2 -> v3; - Check for kvm_enabled() before setting cpuid_7_0_ebx_features Changes v1 -> v2: - Use kvm_arch_get_supported_cpuid() instead of host_cpuid() on cpu_x86_fill_host(). We should use GET_SUPPORTED_CPUID for all bits on "-cpu host" eventually, but I am not changing all the other CPUID leaves because we may not be able to test such an intrusive change in time for 1.1. Description of the bug: Since QEMU 0.15, the CPUID information on CPUID[EAX=7,ECX=0] is being returned unfiltered to the guest, directly from the GET_SUPPORTED_CPUID return value. The problem is that this makes the resulting CPU feature flags unpredictable and dependent on the host CPU and kernel version. This breaks live-migration badly if migrating from a host CPU that supports some features on that CPUID leaf (running a recent kernel) to a kernel or host CPU that doesn't support it. Migration also is incorrect (the virtual CPU changes under the guest's feet) if you migrate in the opposite direction (from an old CPU/kernel to a new CPU/kernel), but with less serious consequences (guests normally query CPUID information only once on boot). Fortunately, the bug affects only users using cpudefs with level >= 7. The right behavior should be to explicitly enable those features on [cpudef] config sections or on the "-cpu" command-line arguments. Right now there is no predefined CPU model on QEMU that has those features: the latest Intel model we have is Sandy Bridge. I would like to get this fixed on 1.1, so I am submitting this patch, that enables those features only if "-cpu host" is being used (as we don't have any pre-defined CPU model that actually have those features). After 1.1 is released, we can make those features properly configurable on [cpudef] and -cpu configuration. One problem is: with this patch, users with the following setup: - Running QEMU 1.0; - Using a cpudef having level >= 7; - Running a kernel that supports the features on CPUID leaf 7; and - Running on a CPU that supports some features on CPUID leaf 7 won't be able to live-migrate to QEMU 1.1. But for these users live-migration is already broken (they can't live-migrate to hosts with older CPUs or older kernels, already), I don't see how to avoid this problem. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-05-21 16:27:02 +02:00
/* Structured Extended Feature Flags Enumeration Leaf */
if (count == 0) {
*eax = 0; /* Maximum ECX value for sub-leaves */
*ebx = env->features[FEAT_7_0_EBX]; /* Feature flags */
*ecx = env->features[FEAT_7_0_ECX]; /* Feature flags */
Expose CPUID leaf 7 only for -cpu host Changes v2 -> v3; - Check for kvm_enabled() before setting cpuid_7_0_ebx_features Changes v1 -> v2: - Use kvm_arch_get_supported_cpuid() instead of host_cpuid() on cpu_x86_fill_host(). We should use GET_SUPPORTED_CPUID for all bits on "-cpu host" eventually, but I am not changing all the other CPUID leaves because we may not be able to test such an intrusive change in time for 1.1. Description of the bug: Since QEMU 0.15, the CPUID information on CPUID[EAX=7,ECX=0] is being returned unfiltered to the guest, directly from the GET_SUPPORTED_CPUID return value. The problem is that this makes the resulting CPU feature flags unpredictable and dependent on the host CPU and kernel version. This breaks live-migration badly if migrating from a host CPU that supports some features on that CPUID leaf (running a recent kernel) to a kernel or host CPU that doesn't support it. Migration also is incorrect (the virtual CPU changes under the guest's feet) if you migrate in the opposite direction (from an old CPU/kernel to a new CPU/kernel), but with less serious consequences (guests normally query CPUID information only once on boot). Fortunately, the bug affects only users using cpudefs with level >= 7. The right behavior should be to explicitly enable those features on [cpudef] config sections or on the "-cpu" command-line arguments. Right now there is no predefined CPU model on QEMU that has those features: the latest Intel model we have is Sandy Bridge. I would like to get this fixed on 1.1, so I am submitting this patch, that enables those features only if "-cpu host" is being used (as we don't have any pre-defined CPU model that actually have those features). After 1.1 is released, we can make those features properly configurable on [cpudef] and -cpu configuration. One problem is: with this patch, users with the following setup: - Running QEMU 1.0; - Using a cpudef having level >= 7; - Running a kernel that supports the features on CPUID leaf 7; and - Running on a CPU that supports some features on CPUID leaf 7 won't be able to live-migrate to QEMU 1.1. But for these users live-migration is already broken (they can't live-migrate to hosts with older CPUs or older kernels, already), I don't see how to avoid this problem. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-05-21 16:27:02 +02:00
*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() && cpu->enable_pmu) {
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: {
KVMState *s = cs->kvm_state;
uint64_t kvm_mask;
int i;
/* Processor Extended State */
*eax = 0;
*ebx = 0;
*ecx = 0;
*edx = 0;
if (!(env->features[FEAT_1_ECX] & CPUID_EXT_XSAVE) || !kvm_enabled()) {
break;
}
kvm_mask =
kvm_arch_get_supported_cpuid(s, 0xd, 0, R_EAX) |
((uint64_t)kvm_arch_get_supported_cpuid(s, 0xd, 0, R_EDX) << 32);
if (count == 0) {
*ecx = 0x240;
for (i = 2; i < ARRAY_SIZE(ext_save_areas); i++) {
const ExtSaveArea *esa = &ext_save_areas[i];
if ((env->features[esa->feature] & esa->bits) == esa->bits &&
(kvm_mask & (1 << i)) != 0) {
if (i < 32) {
*eax |= 1 << i;
} else {
*edx |= 1 << (i - 32);
}
*ecx = MAX(*ecx, esa->offset + esa->size);
}
}
*eax |= kvm_mask & (XSTATE_FP | XSTATE_SSE);
*ebx = *ecx;
} else if (count == 1) {
*eax = env->features[FEAT_XSAVE];
} else if (count < ARRAY_SIZE(ext_save_areas)) {
const ExtSaveArea *esa = &ext_save_areas[count];
if ((env->features[esa->feature] & esa->bits) == esa->bits &&
(kvm_mask & (1 << count)) != 0) {
*eax = esa->size;
*ebx = esa->offset;
}
}
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->features[FEAT_8000_0001_ECX];
*edx = env->features[FEAT_8000_0001_EDX];
/* 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) {
if (env->cpuid_vendor1 != CPUID_VENDOR_INTEL_1 ||
env->cpuid_vendor2 != CPUID_VENDOR_INTEL_2 ||
env->cpuid_vendor3 != 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) */
if (cpu->cache_info_passthrough) {
host_cpuid(index, 0, eax, ebx, ecx, edx);
break;
}
*eax = (L1_DTLB_2M_ASSOC << 24) | (L1_DTLB_2M_ENTRIES << 16) | \
(L1_ITLB_2M_ASSOC << 8) | (L1_ITLB_2M_ENTRIES);
*ebx = (L1_DTLB_4K_ASSOC << 24) | (L1_DTLB_4K_ENTRIES << 16) | \
(L1_ITLB_4K_ASSOC << 8) | (L1_ITLB_4K_ENTRIES);
*ecx = (L1D_SIZE_KB_AMD << 24) | (L1D_ASSOCIATIVITY_AMD << 16) | \
(L1D_LINES_PER_TAG << 8) | (L1D_LINE_SIZE);
*edx = (L1I_SIZE_KB_AMD << 24) | (L1I_ASSOCIATIVITY_AMD << 16) | \
(L1I_LINES_PER_TAG << 8) | (L1I_LINE_SIZE);
break;
case 0x80000006:
/* cache info (L2 cache) */
if (cpu->cache_info_passthrough) {
host_cpuid(index, 0, eax, ebx, ecx, edx);
break;
}
*eax = (AMD_ENC_ASSOC(L2_DTLB_2M_ASSOC) << 28) | \
(L2_DTLB_2M_ENTRIES << 16) | \
(AMD_ENC_ASSOC(L2_ITLB_2M_ASSOC) << 12) | \
(L2_ITLB_2M_ENTRIES);
*ebx = (AMD_ENC_ASSOC(L2_DTLB_4K_ASSOC) << 28) | \
(L2_DTLB_4K_ENTRIES << 16) | \
(AMD_ENC_ASSOC(L2_ITLB_4K_ASSOC) << 12) | \
(L2_ITLB_4K_ENTRIES);
*ecx = (L2_SIZE_KB_AMD << 16) | \
(AMD_ENC_ASSOC(L2_ASSOCIATIVITY) << 12) | \
(L2_LINES_PER_TAG << 8) | (L2_LINE_SIZE);
*edx = ((L3_SIZE_KB/512) << 18) | \
(AMD_ENC_ASSOC(L3_ASSOCIATIVITY) << 12) | \
(L3_LINES_PER_TAG << 8) | (L3_LINE_SIZE);
break;
case 0x80000007:
*eax = 0;
*ebx = 0;
*ecx = 0;
*edx = env->features[FEAT_8000_0007_EDX];
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->features[FEAT_8000_0001_EDX] & 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->features[FEAT_1_EDX] & 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->features[FEAT_8000_0001_ECX] & CPUID_EXT3_SVM) {
*eax = 0x00000001; /* SVM Revision */
*ebx = 0x00000010; /* nr of ASIDs */
*ecx = 0;
*edx = env->features[FEAT_SVM]; /* 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->features[FEAT_C000_0001_EDX];
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;
xcc->parent_reset(s);
memset(env, 0, offsetof(CPUX86State, cpuid_level));
tlb_flush(s, 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;
}
cpu_set_fpuc(env, 0x37f);
env->mxcsr = 0x1f80;
env->xstate_bv = XSTATE_FP | XSTATE_SSE;
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(s, BP_CPU);
cpu_watchpoint_remove_all(s, BP_CPU);
env->xcr0 = 1;
/*
* SDM 11.11.5 requires:
* - IA32_MTRR_DEF_TYPE MSR.E = 0
* - IA32_MTRR_PHYSMASKn.V = 0
* All other bits are undefined. For simplification, zero it all.
*/
env->mtrr_deftype = 0;
memset(env->mtrr_var, 0, sizeof(env->mtrr_var));
memset(env->mtrr_fixed, 0, sizeof(env->mtrr_fixed));
#if !defined(CONFIG_USER_ONLY)
/* We hard-wire the BSP to the first CPU. */
apic_designate_bsp(cpu->apic_state, s->cpu_index == 0);
s->halted = !cpu_is_bsp(cpu);
if (kvm_enabled()) {
kvm_arch_reset_vcpu(cpu);
}
#endif
}
#ifndef CONFIG_USER_ONLY
bool cpu_is_bsp(X86CPU *cpu)
{
return cpu_get_apic_base(cpu->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->features[FEAT_1_EDX] & (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;
}
}
}
#ifndef CONFIG_USER_ONLY
static void x86_cpu_apic_create(X86CPU *cpu, Error **errp)
{
APICCommonState *apic;
const char *apic_type = "apic";
if (kvm_apic_in_kernel()) {
apic_type = "kvm-apic";
} else if (xen_enabled()) {
apic_type = "xen-apic";
}
cpu->apic_state = DEVICE(object_new(apic_type));
object_property_add_child(OBJECT(cpu), "apic",
OBJECT(cpu->apic_state), NULL);
qdev_prop_set_uint8(cpu->apic_state, "id", cpu->apic_id);
/* TODO: convert to link<> */
apic = APIC_COMMON(cpu->apic_state);
apic->cpu = cpu;
apic->apicbase = APIC_DEFAULT_ADDRESS | MSR_IA32_APICBASE_ENABLE;
}
static void x86_cpu_apic_realize(X86CPU *cpu, Error **errp)
{
APICCommonState *apic;
static bool apic_mmio_map_once;
if (cpu->apic_state == NULL) {
return;
}
object_property_set_bool(OBJECT(cpu->apic_state), true, "realized",
errp);
/* Map APIC MMIO area */
apic = APIC_COMMON(cpu->apic_state);
if (!apic_mmio_map_once) {
memory_region_add_subregion_overlap(get_system_memory(),
apic->apicbase &
MSR_IA32_APICBASE_BASE,
&apic->io_memory,
0x1000);
apic_mmio_map_once = true;
}
}
static void x86_cpu_machine_done(Notifier *n, void *unused)
{
X86CPU *cpu = container_of(n, X86CPU, machine_done);
MemoryRegion *smram =
(MemoryRegion *) object_resolve_path("/machine/smram", NULL);
if (smram) {
cpu->smram = g_new(MemoryRegion, 1);
memory_region_init_alias(cpu->smram, OBJECT(cpu), "smram",
smram, 0, 1ull << 32);
memory_region_set_enabled(cpu->smram, false);
memory_region_add_subregion_overlap(cpu->cpu_as_root, 0, cpu->smram, 1);
}
}
#else
static void x86_cpu_apic_realize(X86CPU *cpu, Error **errp)
{
}
#endif
#define IS_INTEL_CPU(env) ((env)->cpuid_vendor1 == CPUID_VENDOR_INTEL_1 && \
(env)->cpuid_vendor2 == CPUID_VENDOR_INTEL_2 && \
(env)->cpuid_vendor3 == CPUID_VENDOR_INTEL_3)
#define IS_AMD_CPU(env) ((env)->cpuid_vendor1 == CPUID_VENDOR_AMD_1 && \
(env)->cpuid_vendor2 == CPUID_VENDOR_AMD_2 && \
(env)->cpuid_vendor3 == CPUID_VENDOR_AMD_3)
static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
{
CPUState *cs = CPU(dev);
X86CPU *cpu = X86_CPU(dev);
X86CPUClass *xcc = X86_CPU_GET_CLASS(dev);
CPUX86State *env = &cpu->env;
Error *local_err = NULL;
static bool ht_warned;
if (cpu->apic_id < 0) {
error_setg(errp, "apic-id property was not initialized properly");
return;
}
if (env->features[FEAT_7_0_EBX] && 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 (IS_AMD_CPU(env)) {
env->features[FEAT_8000_0001_EDX] &= ~CPUID_EXT2_AMD_ALIASES;
env->features[FEAT_8000_0001_EDX] |= (env->features[FEAT_1_EDX]
& CPUID_EXT2_AMD_ALIASES);
}
if (x86_cpu_filter_features(cpu) && cpu->enforce_cpuid) {
error_setg(&local_err,
kvm_enabled() ?
"Host doesn't support requested features" :
"TCG doesn't support requested features");
goto out;
}
#ifndef CONFIG_USER_ONLY
qemu_register_reset(x86_cpu_machine_reset_cb, cpu);
if (cpu->env.features[FEAT_1_EDX] & CPUID_APIC || smp_cpus > 1) {
x86_cpu_apic_create(cpu, &local_err);
if (local_err != NULL) {
goto out;
}
}
#endif
mce_init(cpu);
#ifndef CONFIG_USER_ONLY
if (tcg_enabled()) {
AddressSpace *newas = g_new(AddressSpace, 1);
cpu->cpu_as_mem = g_new(MemoryRegion, 1);
cpu->cpu_as_root = g_new(MemoryRegion, 1);
/* Outer container... */
memory_region_init(cpu->cpu_as_root, OBJECT(cpu), "memory", ~0ull);
memory_region_set_enabled(cpu->cpu_as_root, true);
/* ... with two regions inside: normal system memory with low
* priority, and...
*/
memory_region_init_alias(cpu->cpu_as_mem, OBJECT(cpu), "memory",
get_system_memory(), 0, ~0ull);
memory_region_add_subregion_overlap(cpu->cpu_as_root, 0, cpu->cpu_as_mem, 0);
memory_region_set_enabled(cpu->cpu_as_mem, true);
address_space_init(newas, cpu->cpu_as_root, "CPU");
cs->num_ases = 1;
cpu_address_space_init(cs, newas, 0);
/* ... SMRAM with higher priority, linked from /machine/smram. */
cpu->machine_done.notify = x86_cpu_machine_done;
qemu_add_machine_init_done_notifier(&cpu->machine_done);
}
#endif
qemu_init_vcpu(cs);
/* Only Intel CPUs support hyperthreading. Even though QEMU fixes this
* issue by adjusting CPUID_0000_0001_EBX and CPUID_8000_0008_ECX
* based on inputs (sockets,cores,threads), it is still better to gives
* users a warning.
*
* NOTE: the following code has to follow qemu_init_vcpu(). Otherwise
* cs->nr_threads hasn't be populated yet and the checking is incorrect.
*/
if (!IS_INTEL_CPU(env) && cs->nr_threads > 1 && !ht_warned) {
error_report("AMD CPU doesn't support hyperthreading. Please configure"
" -smp options properly.");
ht_warned = true;
}
x86_cpu_apic_realize(cpu, &local_err);
if (local_err != NULL) {
goto out;
}
cpu_reset(cs);
xcc->parent_realize(dev, &local_err);
out:
if (local_err != NULL) {
error_propagate(errp, local_err);
return;
}
}
typedef struct BitProperty {
uint32_t *ptr;
uint32_t mask;
} BitProperty;
static void x86_cpu_get_bit_prop(Object *obj,
struct Visitor *v,
void *opaque,
const char *name,
Error **errp)
{
BitProperty *fp = opaque;
bool value = (*fp->ptr & fp->mask) == fp->mask;
visit_type_bool(v, &value, name, errp);
}
static void x86_cpu_set_bit_prop(Object *obj,
struct Visitor *v,
void *opaque,
const char *name,
Error **errp)
{
DeviceState *dev = DEVICE(obj);
BitProperty *fp = opaque;
Error *local_err = NULL;
bool value;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_bool(v, &value, name, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
if (value) {
*fp->ptr |= fp->mask;
} else {
*fp->ptr &= ~fp->mask;
}
}
static void x86_cpu_release_bit_prop(Object *obj, const char *name,
void *opaque)
{
BitProperty *prop = opaque;
g_free(prop);
}
/* Register a boolean property to get/set a single bit in a uint32_t field.
*
* The same property name can be registered multiple times to make it affect
* multiple bits in the same FeatureWord. In that case, the getter will return
* true only if all bits are set.
*/
static void x86_cpu_register_bit_prop(X86CPU *cpu,
const char *prop_name,
uint32_t *field,
int bitnr)
{
BitProperty *fp;
ObjectProperty *op;
uint32_t mask = (1UL << bitnr);
op = object_property_find(OBJECT(cpu), prop_name, NULL);
if (op) {
fp = op->opaque;
assert(fp->ptr == field);
fp->mask |= mask;
} else {
fp = g_new0(BitProperty, 1);
fp->ptr = field;
fp->mask = mask;
object_property_add(OBJECT(cpu), prop_name, "bool",
x86_cpu_get_bit_prop,
x86_cpu_set_bit_prop,
x86_cpu_release_bit_prop, fp, &error_abort);
}
}
static void x86_cpu_register_feature_bit_props(X86CPU *cpu,
FeatureWord w,
int bitnr)
{
Object *obj = OBJECT(cpu);
int i;
char **names;
FeatureWordInfo *fi = &feature_word_info[w];
if (!fi->feat_names) {
return;
}
if (!fi->feat_names[bitnr]) {
return;
}
names = g_strsplit(fi->feat_names[bitnr], "|", 0);
feat2prop(names[0]);
x86_cpu_register_bit_prop(cpu, names[0], &cpu->env.features[w], bitnr);
for (i = 1; names[i]; i++) {
feat2prop(names[i]);
object_property_add_alias(obj, names[i], obj, names[0],
&error_abort);
}
g_strfreev(names);
}
static void x86_cpu_initfn(Object *obj)
{
CPUState *cs = CPU(obj);
X86CPU *cpu = X86_CPU(obj);
X86CPUClass *xcc = X86_CPU_GET_CLASS(obj);
CPUX86State *env = &cpu->env;
FeatureWord w;
static int inited;
cs->env_ptr = env;
cpu_exec_init(cs, &error_abort);
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_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);
object_property_add(obj, "apic-id", "int",
x86_cpuid_get_apic_id,
x86_cpuid_set_apic_id, NULL, NULL, NULL);
object_property_add(obj, "feature-words", "X86CPUFeatureWordInfo",
x86_cpu_get_feature_words,
target-i386: Add "filtered-features" property to X86CPU This property will contain all the features that were removed from the CPU because they are not supported by the host. This way, libvirt or other management tools can emulate the check/enforce behavior by checking if filtered-properties is all zeroes, before starting the guest. Example output where some features were missing: $ qemu-system-x86_64 -enable-kvm -cpu Haswell,check -S \ -qmp unix:/tmp/m,server,nowait warning: host doesn't support requested feature: CPUID.01H:ECX.fma [bit 12] warning: host doesn't support requested feature: CPUID.01H:ECX.movbe [bit 22] warning: host doesn't support requested feature: CPUID.01H:ECX.tsc-deadline [bit 24] warning: host doesn't support requested feature: CPUID.01H:ECX.xsave [bit 26] warning: host doesn't support requested feature: CPUID.01H:ECX.avx [bit 28] warning: host doesn't support requested feature: CPUID.07H:EBX.fsgsbase [bit 0] warning: host doesn't support requested feature: CPUID.07H:EBX.bmi1 [bit 3] warning: host doesn't support requested feature: CPUID.07H:EBX.hle [bit 4] warning: host doesn't support requested feature: CPUID.07H:EBX.avx2 [bit 5] warning: host doesn't support requested feature: CPUID.07H:EBX.smep [bit 7] warning: host doesn't support requested feature: CPUID.07H:EBX.bmi2 [bit 8] warning: host doesn't support requested feature: CPUID.07H:EBX.erms [bit 9] warning: host doesn't support requested feature: CPUID.07H:EBX.invpcid [bit 10] warning: host doesn't support requested feature: CPUID.07H:EBX.rtm [bit 11] [...] $ ./QMP/qmp --path=/tmp/m \ qom-get --path=/machine/icc-bridge/icc/child[0] \ --property=filtered-features item[0].cpuid-register: EDX item[0].cpuid-input-eax: 2147483658 item[0].features: 0 item[1].cpuid-register: EAX item[1].cpuid-input-eax: 1073741825 item[1].features: 0 item[2].cpuid-register: EDX item[2].cpuid-input-eax: 3221225473 item[2].features: 0 item[3].cpuid-register: ECX item[3].cpuid-input-eax: 2147483649 item[3].features: 0 item[4].cpuid-register: EDX item[4].cpuid-input-eax: 2147483649 item[4].features: 0 item[5].cpuid-register: EBX item[5].cpuid-input-eax: 7 item[5].features: 4025 item[5].cpuid-input-ecx: 0 item[6].cpuid-register: ECX item[6].cpuid-input-eax: 1 item[6].features: 356519936 item[7].cpuid-register: EDX item[7].cpuid-input-eax: 1 item[7].features: 0 Example output when no feature is missing: $ qemu-system-x86_64 -enable-kvm -cpu Nehalem,enforce -S \ -qmp unix:/tmp/m,server,nowait [...] $ ./QMP/qmp --path=/tmp/m \ qom-get --path=/machine/icc-bridge/icc/child[0] \ --property=filtered-features item[0].cpuid-register: EDX item[0].cpuid-input-eax: 2147483658 item[0].features: 0 item[1].cpuid-register: EAX item[1].cpuid-input-eax: 1073741825 item[1].features: 0 item[2].cpuid-register: EDX item[2].cpuid-input-eax: 3221225473 item[2].features: 0 item[3].cpuid-register: ECX item[3].cpuid-input-eax: 2147483649 item[3].features: 0 item[4].cpuid-register: EDX item[4].cpuid-input-eax: 2147483649 item[4].features: 0 item[5].cpuid-register: EBX item[5].cpuid-input-eax: 7 item[5].features: 0 item[5].cpuid-input-ecx: 0 item[6].cpuid-register: ECX item[6].cpuid-input-eax: 1 item[6].features: 0 item[7].cpuid-register: EDX item[7].cpuid-input-eax: 1 item[7].features: 0 Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-05-06 18:20:09 +02:00
NULL, NULL, (void *)env->features, NULL);
object_property_add(obj, "filtered-features", "X86CPUFeatureWordInfo",
x86_cpu_get_feature_words,
NULL, NULL, (void *)cpu->filtered_features, NULL);
cpu->hyperv_spinlock_attempts = HYPERV_SPINLOCK_NEVER_RETRY;
#ifndef CONFIG_USER_ONLY
/* Any code creating new X86CPU objects have to set apic-id explicitly */
cpu->apic_id = -1;
#endif
for (w = 0; w < FEATURE_WORDS; w++) {
int bitnr;
for (bitnr = 0; bitnr < 32; bitnr++) {
x86_cpu_register_feature_bit_props(cpu, w, bitnr);
}
}
x86_cpu_load_def(cpu, xcc->cpu_def, &error_abort);
/* init various static tables used in TCG mode */
if (tcg_enabled() && !inited) {
inited = 1;
tcg_x86_init();
}
}
static int64_t x86_cpu_get_arch_id(CPUState *cs)
{
X86CPU *cpu = X86_CPU(cs);
return cpu->apic_id;
}
static bool x86_cpu_get_paging_enabled(const CPUState *cs)
{
X86CPU *cpu = X86_CPU(cs);
return cpu->env.cr[0] & CR0_PG_MASK;
}
static void x86_cpu_set_pc(CPUState *cs, vaddr value)
{
X86CPU *cpu = X86_CPU(cs);
cpu->env.eip = value;
}
static void x86_cpu_synchronize_from_tb(CPUState *cs, TranslationBlock *tb)
{
X86CPU *cpu = X86_CPU(cs);
cpu->env.eip = tb->pc - tb->cs_base;
}
static bool x86_cpu_has_work(CPUState *cs)
{
X86CPU *cpu = X86_CPU(cs);
CPUX86State *env = &cpu->env;
return ((cs->interrupt_request & (CPU_INTERRUPT_HARD |
CPU_INTERRUPT_POLL)) &&
(env->eflags & IF_MASK)) ||
(cs->interrupt_request & (CPU_INTERRUPT_NMI |
CPU_INTERRUPT_INIT |
CPU_INTERRUPT_SIPI |
CPU_INTERRUPT_MCE)) ||
((cs->interrupt_request & CPU_INTERRUPT_SMI) &&
!(env->hflags & HF_SMM_MASK));
}
static Property x86_cpu_properties[] = {
DEFINE_PROP_BOOL("pmu", X86CPU, enable_pmu, false),
{ .name = "hv-spinlocks", .info = &qdev_prop_spinlocks },
DEFINE_PROP_BOOL("hv-relaxed", X86CPU, hyperv_relaxed_timing, false),
DEFINE_PROP_BOOL("hv-vapic", X86CPU, hyperv_vapic, false),
DEFINE_PROP_BOOL("hv-time", X86CPU, hyperv_time, false),
DEFINE_PROP_BOOL("hv-crash", X86CPU, hyperv_crash, false),
DEFINE_PROP_BOOL("hv-reset", X86CPU, hyperv_reset, false),
DEFINE_PROP_BOOL("hv-vpindex", X86CPU, hyperv_vpindex, false),
DEFINE_PROP_BOOL("hv-runtime", X86CPU, hyperv_runtime, false),
DEFINE_PROP_BOOL("hv-synic", X86CPU, hyperv_synic, false),
DEFINE_PROP_BOOL("hv-stimer", X86CPU, hyperv_stimer, false),
DEFINE_PROP_BOOL("check", X86CPU, check_cpuid, true),
DEFINE_PROP_BOOL("enforce", X86CPU, enforce_cpuid, false),
DEFINE_PROP_BOOL("kvm", X86CPU, expose_kvm, true),
DEFINE_PROP_UINT32("level", X86CPU, env.cpuid_level, 0),
DEFINE_PROP_UINT32("xlevel", X86CPU, env.cpuid_xlevel, 0),
DEFINE_PROP_UINT32("xlevel2", X86CPU, env.cpuid_xlevel2, 0),
DEFINE_PROP_STRING("hv-vendor-id", X86CPU, hyperv_vendor_id),
DEFINE_PROP_END_OF_LIST()
};
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;
dc->props = x86_cpu_properties;
xcc->parent_reset = cc->reset;
cc->reset = x86_cpu_reset;
cc->reset_dump_flags = CPU_DUMP_FPU | CPU_DUMP_CCOP;
cc->class_by_name = x86_cpu_class_by_name;
cc->parse_features = x86_cpu_parse_featurestr;
cc->has_work = x86_cpu_has_work;
cc->do_interrupt = x86_cpu_do_interrupt;
cc->cpu_exec_interrupt = x86_cpu_exec_interrupt;
cc->dump_state = x86_cpu_dump_state;
cc->set_pc = x86_cpu_set_pc;
cc->synchronize_from_tb = x86_cpu_synchronize_from_tb;
cc->gdb_read_register = x86_cpu_gdb_read_register;
cc->gdb_write_register = x86_cpu_gdb_write_register;
cc->get_arch_id = x86_cpu_get_arch_id;
cc->get_paging_enabled = x86_cpu_get_paging_enabled;
#ifdef CONFIG_USER_ONLY
cc->handle_mmu_fault = x86_cpu_handle_mmu_fault;
#else
cc->get_memory_mapping = x86_cpu_get_memory_mapping;
cc->get_phys_page_debug = x86_cpu_get_phys_page_debug;
cc->write_elf64_note = x86_cpu_write_elf64_note;
cc->write_elf64_qemunote = x86_cpu_write_elf64_qemunote;
cc->write_elf32_note = x86_cpu_write_elf32_note;
cc->write_elf32_qemunote = x86_cpu_write_elf32_qemunote;
cc->vmsd = &vmstate_x86_cpu;
#endif
cc->gdb_num_core_regs = CPU_NB_REGS * 2 + 25;
#ifndef CONFIG_USER_ONLY
cc->debug_excp_handler = breakpoint_handler;
#endif
cc->cpu_exec_enter = x86_cpu_exec_enter;
cc->cpu_exec_exit = x86_cpu_exec_exit;
qdev: Protect device-list-properties against broken devices Several devices don't survive object_unref(object_new(T)): they crash or hang during cleanup, or they leave dangling pointers behind. This breaks at least device-list-properties, because qmp_device_list_properties() needs to create a device to find its properties. Broken in commit f4eb32b "qmp: show QOM properties in device-list-properties", v2.1. Example reproducer: $ qemu-system-aarch64 -nodefaults -display none -machine none -S -qmp stdio {"QMP": {"version": {"qemu": {"micro": 50, "minor": 4, "major": 2}, "package": ""}, "capabilities": []}} { "execute": "qmp_capabilities" } {"return": {}} { "execute": "device-list-properties", "arguments": { "typename": "pxa2xx-pcmcia" } } qemu-system-aarch64: /home/armbru/work/qemu/memory.c:1307: memory_region_finalize: Assertion `((&mr->subregions)->tqh_first == ((void *)0))' failed. Aborted (core dumped) [Exit 134 (SIGABRT)] Unfortunately, I can't fix the problems in these devices right now. Instead, add DeviceClass member cannot_destroy_with_object_finalize_yet to mark them: * Hang during cleanup (didn't debug, so I can't say why): "realview_pci", "versatile_pci". * Dangling pointer in cpus: most CPUs, plus "allwinner-a10", "digic", "fsl,imx25", "fsl,imx31", "xlnx,zynqmp", because they create such CPUs * Assert kvm_enabled(): "host-x86_64-cpu", host-i386-cpu", "host-powerpc64-cpu", "host-embedded-powerpc-cpu", "host-powerpc-cpu" (the powerpc ones can't currently reach the assertion, because the CPUs are only registered when KVM is enabled, but the assertion is arguably in the wrong place all the same) Make qmp_device_list_properties() fail cleanly when the device is so marked. This improves device-list-properties from "crashes, hangs or leaves dangling pointers behind" to "fails". Not a complete fix, just a better-than-nothing work-around. In the above reproducer, device-list-properties now fails with "Can't list properties of device 'pxa2xx-pcmcia'". This also protects -device FOO,help, which uses the same machinery since commit ef52358 "qdev-monitor: include QOM properties in -device FOO, help output", v2.2. Example reproducer: $ qemu-system-aarch64 -machine none -device pxa2xx-pcmcia,help Before: qemu-system-aarch64: .../memory.c:1307: memory_region_finalize: Assertion `((&mr->subregions)->tqh_first == ((void *)0))' failed. After: Can't list properties of device 'pxa2xx-pcmcia' Cc: "Andreas Färber" <afaerber@suse.de> Cc: "Edgar E. Iglesias" <edgar.iglesias@gmail.com> Cc: Alexander Graf <agraf@suse.de> Cc: Anthony Green <green@moxielogic.com> Cc: Aurelien Jarno <aurelien@aurel32.net> Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Cc: Blue Swirl <blauwirbel@gmail.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Jia Liu <proljc@gmail.com> Cc: Leon Alrae <leon.alrae@imgtec.com> Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Cc: Max Filippov <jcmvbkbc@gmail.com> Cc: Michael Walle <michael@walle.cc> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Peter Maydell <peter.maydell@linaro.org> Cc: Richard Henderson <rth@twiddle.net> Cc: qemu-ppc@nongnu.org Cc: qemu-stable@nongnu.org Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <1443689999-12182-10-git-send-email-armbru@redhat.com>
2015-10-01 10:59:58 +02:00
/*
* Reason: x86_cpu_initfn() calls cpu_exec_init(), which saves the
* object in cpus -> dangling pointer after final object_unref().
*/
dc->cannot_destroy_with_object_finalize_yet = true;
}
static const TypeInfo x86_cpu_type_info = {
.name = TYPE_X86_CPU,
.parent = TYPE_CPU,
.instance_size = sizeof(X86CPU),
.instance_init = x86_cpu_initfn,
.abstract = true,
.class_size = sizeof(X86CPUClass),
.class_init = x86_cpu_common_class_init,
};
static void x86_cpu_register_types(void)
{
int i;
type_register_static(&x86_cpu_type_info);
for (i = 0; i < ARRAY_SIZE(builtin_x86_defs); i++) {
x86_register_cpudef_type(&builtin_x86_defs[i]);
}
#ifdef CONFIG_KVM
type_register_static(&host_x86_cpu_type_info);
#endif
}
type_init(x86_cpu_register_types)