linux/arch/x86/include/asm/cpufeature.h
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   1/*
   2 * Defines x86 CPU feature bits
   3 */
   4#ifndef _ASM_X86_CPUFEATURE_H
   5#define _ASM_X86_CPUFEATURE_H
   6
   7#ifndef _ASM_X86_REQUIRED_FEATURES_H
   8#include <asm/required-features.h>
   9#endif
  10
  11#ifndef _ASM_X86_DISABLED_FEATURES_H
  12#include <asm/disabled-features.h>
  13#endif
  14
  15#define NCAPINTS        11      /* N 32-bit words worth of info */
  16#define NBUGINTS        1       /* N 32-bit bug flags */
  17
  18/*
  19 * Note: If the comment begins with a quoted string, that string is used
  20 * in /proc/cpuinfo instead of the macro name.  If the string is "",
  21 * this feature bit is not displayed in /proc/cpuinfo at all.
  22 */
  23
  24/* Intel-defined CPU features, CPUID level 0x00000001 (edx), word 0 */
  25#define X86_FEATURE_FPU         ( 0*32+ 0) /* Onboard FPU */
  26#define X86_FEATURE_VME         ( 0*32+ 1) /* Virtual Mode Extensions */
  27#define X86_FEATURE_DE          ( 0*32+ 2) /* Debugging Extensions */
  28#define X86_FEATURE_PSE         ( 0*32+ 3) /* Page Size Extensions */
  29#define X86_FEATURE_TSC         ( 0*32+ 4) /* Time Stamp Counter */
  30#define X86_FEATURE_MSR         ( 0*32+ 5) /* Model-Specific Registers */
  31#define X86_FEATURE_PAE         ( 0*32+ 6) /* Physical Address Extensions */
  32#define X86_FEATURE_MCE         ( 0*32+ 7) /* Machine Check Exception */
  33#define X86_FEATURE_CX8         ( 0*32+ 8) /* CMPXCHG8 instruction */
  34#define X86_FEATURE_APIC        ( 0*32+ 9) /* Onboard APIC */
  35#define X86_FEATURE_SEP         ( 0*32+11) /* SYSENTER/SYSEXIT */
  36#define X86_FEATURE_MTRR        ( 0*32+12) /* Memory Type Range Registers */
  37#define X86_FEATURE_PGE         ( 0*32+13) /* Page Global Enable */
  38#define X86_FEATURE_MCA         ( 0*32+14) /* Machine Check Architecture */
  39#define X86_FEATURE_CMOV        ( 0*32+15) /* CMOV instructions */
  40                                          /* (plus FCMOVcc, FCOMI with FPU) */
  41#define X86_FEATURE_PAT         ( 0*32+16) /* Page Attribute Table */
  42#define X86_FEATURE_PSE36       ( 0*32+17) /* 36-bit PSEs */
  43#define X86_FEATURE_PN          ( 0*32+18) /* Processor serial number */
  44#define X86_FEATURE_CLFLUSH     ( 0*32+19) /* CLFLUSH instruction */
  45#define X86_FEATURE_DS          ( 0*32+21) /* "dts" Debug Store */
  46#define X86_FEATURE_ACPI        ( 0*32+22) /* ACPI via MSR */
  47#define X86_FEATURE_MMX         ( 0*32+23) /* Multimedia Extensions */
  48#define X86_FEATURE_FXSR        ( 0*32+24) /* FXSAVE/FXRSTOR, CR4.OSFXSR */
  49#define X86_FEATURE_XMM         ( 0*32+25) /* "sse" */
  50#define X86_FEATURE_XMM2        ( 0*32+26) /* "sse2" */
  51#define X86_FEATURE_SELFSNOOP   ( 0*32+27) /* "ss" CPU self snoop */
  52#define X86_FEATURE_HT          ( 0*32+28) /* Hyper-Threading */
  53#define X86_FEATURE_ACC         ( 0*32+29) /* "tm" Automatic clock control */
  54#define X86_FEATURE_IA64        ( 0*32+30) /* IA-64 processor */
  55#define X86_FEATURE_PBE         ( 0*32+31) /* Pending Break Enable */
  56
  57/* AMD-defined CPU features, CPUID level 0x80000001, word 1 */
  58/* Don't duplicate feature flags which are redundant with Intel! */
  59#define X86_FEATURE_SYSCALL     ( 1*32+11) /* SYSCALL/SYSRET */
  60#define X86_FEATURE_MP          ( 1*32+19) /* MP Capable. */
  61#define X86_FEATURE_NX          ( 1*32+20) /* Execute Disable */
  62#define X86_FEATURE_MMXEXT      ( 1*32+22) /* AMD MMX extensions */
  63#define X86_FEATURE_FXSR_OPT    ( 1*32+25) /* FXSAVE/FXRSTOR optimizations */
  64#define X86_FEATURE_GBPAGES     ( 1*32+26) /* "pdpe1gb" GB pages */
  65#define X86_FEATURE_RDTSCP      ( 1*32+27) /* RDTSCP */
  66#define X86_FEATURE_LM          ( 1*32+29) /* Long Mode (x86-64) */
  67#define X86_FEATURE_3DNOWEXT    ( 1*32+30) /* AMD 3DNow! extensions */
  68#define X86_FEATURE_3DNOW       ( 1*32+31) /* 3DNow! */
  69
  70/* Transmeta-defined CPU features, CPUID level 0x80860001, word 2 */
  71#define X86_FEATURE_RECOVERY    ( 2*32+ 0) /* CPU in recovery mode */
  72#define X86_FEATURE_LONGRUN     ( 2*32+ 1) /* Longrun power control */
  73#define X86_FEATURE_LRTI        ( 2*32+ 3) /* LongRun table interface */
  74
  75/* Other features, Linux-defined mapping, word 3 */
  76/* This range is used for feature bits which conflict or are synthesized */
  77#define X86_FEATURE_CXMMX       ( 3*32+ 0) /* Cyrix MMX extensions */
  78#define X86_FEATURE_K6_MTRR     ( 3*32+ 1) /* AMD K6 nonstandard MTRRs */
  79#define X86_FEATURE_CYRIX_ARR   ( 3*32+ 2) /* Cyrix ARRs (= MTRRs) */
  80#define X86_FEATURE_CENTAUR_MCR ( 3*32+ 3) /* Centaur MCRs (= MTRRs) */
  81/* cpu types for specific tunings: */
  82#define X86_FEATURE_K8          ( 3*32+ 4) /* "" Opteron, Athlon64 */
  83#define X86_FEATURE_K7          ( 3*32+ 5) /* "" Athlon */
  84#define X86_FEATURE_P3          ( 3*32+ 6) /* "" P3 */
  85#define X86_FEATURE_P4          ( 3*32+ 7) /* "" P4 */
  86#define X86_FEATURE_CONSTANT_TSC ( 3*32+ 8) /* TSC ticks at a constant rate */
  87#define X86_FEATURE_UP          ( 3*32+ 9) /* smp kernel running on up */
  88/* free, was #define X86_FEATURE_FXSAVE_LEAK ( 3*32+10) * "" FXSAVE leaks FOP/FIP/FOP */
  89#define X86_FEATURE_ARCH_PERFMON ( 3*32+11) /* Intel Architectural PerfMon */
  90#define X86_FEATURE_PEBS        ( 3*32+12) /* Precise-Event Based Sampling */
  91#define X86_FEATURE_BTS         ( 3*32+13) /* Branch Trace Store */
  92#define X86_FEATURE_SYSCALL32   ( 3*32+14) /* "" syscall in ia32 userspace */
  93#define X86_FEATURE_SYSENTER32  ( 3*32+15) /* "" sysenter in ia32 userspace */
  94#define X86_FEATURE_REP_GOOD    ( 3*32+16) /* rep microcode works well */
  95#define X86_FEATURE_MFENCE_RDTSC ( 3*32+17) /* "" Mfence synchronizes RDTSC */
  96#define X86_FEATURE_LFENCE_RDTSC ( 3*32+18) /* "" Lfence synchronizes RDTSC */
  97/* free, was #define X86_FEATURE_11AP   ( 3*32+19) * "" Bad local APIC aka 11AP */
  98#define X86_FEATURE_NOPL        ( 3*32+20) /* The NOPL (0F 1F) instructions */
  99#define X86_FEATURE_ALWAYS      ( 3*32+21) /* "" Always-present feature */
 100#define X86_FEATURE_XTOPOLOGY   ( 3*32+22) /* cpu topology enum extensions */
 101#define X86_FEATURE_TSC_RELIABLE ( 3*32+23) /* TSC is known to be reliable */
 102#define X86_FEATURE_NONSTOP_TSC ( 3*32+24) /* TSC does not stop in C states */
 103/* free, was #define X86_FEATURE_CLFLUSH_MONITOR ( 3*32+25) * "" clflush reqd with monitor */
 104#define X86_FEATURE_EXTD_APICID ( 3*32+26) /* has extended APICID (8 bits) */
 105#define X86_FEATURE_AMD_DCM     ( 3*32+27) /* multi-node processor */
 106#define X86_FEATURE_APERFMPERF  ( 3*32+28) /* APERFMPERF */
 107#define X86_FEATURE_EAGER_FPU   ( 3*32+29) /* "eagerfpu" Non lazy FPU restore */
 108#define X86_FEATURE_NONSTOP_TSC_S3 ( 3*32+30) /* TSC doesn't stop in S3 state */
 109
 110/* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */
 111#define X86_FEATURE_XMM3        ( 4*32+ 0) /* "pni" SSE-3 */
 112#define X86_FEATURE_PCLMULQDQ   ( 4*32+ 1) /* PCLMULQDQ instruction */
 113#define X86_FEATURE_DTES64      ( 4*32+ 2) /* 64-bit Debug Store */
 114#define X86_FEATURE_MWAIT       ( 4*32+ 3) /* "monitor" Monitor/Mwait support */
 115#define X86_FEATURE_DSCPL       ( 4*32+ 4) /* "ds_cpl" CPL Qual. Debug Store */
 116#define X86_FEATURE_VMX         ( 4*32+ 5) /* Hardware virtualization */
 117#define X86_FEATURE_SMX         ( 4*32+ 6) /* Safer mode */
 118#define X86_FEATURE_EST         ( 4*32+ 7) /* Enhanced SpeedStep */
 119#define X86_FEATURE_TM2         ( 4*32+ 8) /* Thermal Monitor 2 */
 120#define X86_FEATURE_SSSE3       ( 4*32+ 9) /* Supplemental SSE-3 */
 121#define X86_FEATURE_CID         ( 4*32+10) /* Context ID */
 122#define X86_FEATURE_FMA         ( 4*32+12) /* Fused multiply-add */
 123#define X86_FEATURE_CX16        ( 4*32+13) /* CMPXCHG16B */
 124#define X86_FEATURE_XTPR        ( 4*32+14) /* Send Task Priority Messages */
 125#define X86_FEATURE_PDCM        ( 4*32+15) /* Performance Capabilities */
 126#define X86_FEATURE_PCID        ( 4*32+17) /* Process Context Identifiers */
 127#define X86_FEATURE_DCA         ( 4*32+18) /* Direct Cache Access */
 128#define X86_FEATURE_XMM4_1      ( 4*32+19) /* "sse4_1" SSE-4.1 */
 129#define X86_FEATURE_XMM4_2      ( 4*32+20) /* "sse4_2" SSE-4.2 */
 130#define X86_FEATURE_X2APIC      ( 4*32+21) /* x2APIC */
 131#define X86_FEATURE_MOVBE       ( 4*32+22) /* MOVBE instruction */
 132#define X86_FEATURE_POPCNT      ( 4*32+23) /* POPCNT instruction */
 133#define X86_FEATURE_TSC_DEADLINE_TIMER  ( 4*32+24) /* Tsc deadline timer */
 134#define X86_FEATURE_AES         ( 4*32+25) /* AES instructions */
 135#define X86_FEATURE_XSAVE       ( 4*32+26) /* XSAVE/XRSTOR/XSETBV/XGETBV */
 136#define X86_FEATURE_OSXSAVE     ( 4*32+27) /* "" XSAVE enabled in the OS */
 137#define X86_FEATURE_AVX         ( 4*32+28) /* Advanced Vector Extensions */
 138#define X86_FEATURE_F16C        ( 4*32+29) /* 16-bit fp conversions */
 139#define X86_FEATURE_RDRAND      ( 4*32+30) /* The RDRAND instruction */
 140#define X86_FEATURE_HYPERVISOR  ( 4*32+31) /* Running on a hypervisor */
 141
 142/* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */
 143#define X86_FEATURE_XSTORE      ( 5*32+ 2) /* "rng" RNG present (xstore) */
 144#define X86_FEATURE_XSTORE_EN   ( 5*32+ 3) /* "rng_en" RNG enabled */
 145#define X86_FEATURE_XCRYPT      ( 5*32+ 6) /* "ace" on-CPU crypto (xcrypt) */
 146#define X86_FEATURE_XCRYPT_EN   ( 5*32+ 7) /* "ace_en" on-CPU crypto enabled */
 147#define X86_FEATURE_ACE2        ( 5*32+ 8) /* Advanced Cryptography Engine v2 */
 148#define X86_FEATURE_ACE2_EN     ( 5*32+ 9) /* ACE v2 enabled */
 149#define X86_FEATURE_PHE         ( 5*32+10) /* PadLock Hash Engine */
 150#define X86_FEATURE_PHE_EN      ( 5*32+11) /* PHE enabled */
 151#define X86_FEATURE_PMM         ( 5*32+12) /* PadLock Montgomery Multiplier */
 152#define X86_FEATURE_PMM_EN      ( 5*32+13) /* PMM enabled */
 153
 154/* More extended AMD flags: CPUID level 0x80000001, ecx, word 6 */
 155#define X86_FEATURE_LAHF_LM     ( 6*32+ 0) /* LAHF/SAHF in long mode */
 156#define X86_FEATURE_CMP_LEGACY  ( 6*32+ 1) /* If yes HyperThreading not valid */
 157#define X86_FEATURE_SVM         ( 6*32+ 2) /* Secure virtual machine */
 158#define X86_FEATURE_EXTAPIC     ( 6*32+ 3) /* Extended APIC space */
 159#define X86_FEATURE_CR8_LEGACY  ( 6*32+ 4) /* CR8 in 32-bit mode */
 160#define X86_FEATURE_ABM         ( 6*32+ 5) /* Advanced bit manipulation */
 161#define X86_FEATURE_SSE4A       ( 6*32+ 6) /* SSE-4A */
 162#define X86_FEATURE_MISALIGNSSE ( 6*32+ 7) /* Misaligned SSE mode */
 163#define X86_FEATURE_3DNOWPREFETCH ( 6*32+ 8) /* 3DNow prefetch instructions */
 164#define X86_FEATURE_OSVW        ( 6*32+ 9) /* OS Visible Workaround */
 165#define X86_FEATURE_IBS         ( 6*32+10) /* Instruction Based Sampling */
 166#define X86_FEATURE_XOP         ( 6*32+11) /* extended AVX instructions */
 167#define X86_FEATURE_SKINIT      ( 6*32+12) /* SKINIT/STGI instructions */
 168#define X86_FEATURE_WDT         ( 6*32+13) /* Watchdog timer */
 169#define X86_FEATURE_LWP         ( 6*32+15) /* Light Weight Profiling */
 170#define X86_FEATURE_FMA4        ( 6*32+16) /* 4 operands MAC instructions */
 171#define X86_FEATURE_TCE         ( 6*32+17) /* translation cache extension */
 172#define X86_FEATURE_NODEID_MSR  ( 6*32+19) /* NodeId MSR */
 173#define X86_FEATURE_TBM         ( 6*32+21) /* trailing bit manipulations */
 174#define X86_FEATURE_TOPOEXT     ( 6*32+22) /* topology extensions CPUID leafs */
 175#define X86_FEATURE_PERFCTR_CORE ( 6*32+23) /* core performance counter extensions */
 176#define X86_FEATURE_PERFCTR_NB  ( 6*32+24) /* NB performance counter extensions */
 177#define X86_FEATURE_PERFCTR_L2  ( 6*32+28) /* L2 performance counter extensions */
 178
 179/*
 180 * Auxiliary flags: Linux defined - For features scattered in various
 181 * CPUID levels like 0x6, 0xA etc, word 7
 182 */
 183#define X86_FEATURE_IDA         ( 7*32+ 0) /* Intel Dynamic Acceleration */
 184#define X86_FEATURE_ARAT        ( 7*32+ 1) /* Always Running APIC Timer */
 185#define X86_FEATURE_CPB         ( 7*32+ 2) /* AMD Core Performance Boost */
 186#define X86_FEATURE_EPB         ( 7*32+ 3) /* IA32_ENERGY_PERF_BIAS support */
 187#define X86_FEATURE_PLN         ( 7*32+ 5) /* Intel Power Limit Notification */
 188#define X86_FEATURE_PTS         ( 7*32+ 6) /* Intel Package Thermal Status */
 189#define X86_FEATURE_DTHERM      ( 7*32+ 7) /* Digital Thermal Sensor */
 190#define X86_FEATURE_HW_PSTATE   ( 7*32+ 8) /* AMD HW-PState */
 191#define X86_FEATURE_PROC_FEEDBACK ( 7*32+ 9) /* AMD ProcFeedbackInterface */
 192#define X86_FEATURE_HWP         ( 7*32+ 10) /* "hwp" Intel HWP */
 193#define X86_FEATURE_HWP_NOITFY  ( 7*32+ 11) /* Intel HWP_NOTIFY */
 194#define X86_FEATURE_HWP_ACT_WINDOW ( 7*32+ 12) /* Intel HWP_ACT_WINDOW */
 195#define X86_FEATURE_HWP_EPP     ( 7*32+13) /* Intel HWP_EPP */
 196#define X86_FEATURE_HWP_PKG_REQ ( 7*32+14) /* Intel HWP_PKG_REQ */
 197
 198/* Virtualization flags: Linux defined, word 8 */
 199#define X86_FEATURE_TPR_SHADOW  ( 8*32+ 0) /* Intel TPR Shadow */
 200#define X86_FEATURE_VNMI        ( 8*32+ 1) /* Intel Virtual NMI */
 201#define X86_FEATURE_FLEXPRIORITY ( 8*32+ 2) /* Intel FlexPriority */
 202#define X86_FEATURE_EPT         ( 8*32+ 3) /* Intel Extended Page Table */
 203#define X86_FEATURE_VPID        ( 8*32+ 4) /* Intel Virtual Processor ID */
 204#define X86_FEATURE_NPT         ( 8*32+ 5) /* AMD Nested Page Table support */
 205#define X86_FEATURE_LBRV        ( 8*32+ 6) /* AMD LBR Virtualization support */
 206#define X86_FEATURE_SVML        ( 8*32+ 7) /* "svm_lock" AMD SVM locking MSR */
 207#define X86_FEATURE_NRIPS       ( 8*32+ 8) /* "nrip_save" AMD SVM next_rip save */
 208#define X86_FEATURE_TSCRATEMSR  ( 8*32+ 9) /* "tsc_scale" AMD TSC scaling support */
 209#define X86_FEATURE_VMCBCLEAN   ( 8*32+10) /* "vmcb_clean" AMD VMCB clean bits support */
 210#define X86_FEATURE_FLUSHBYASID ( 8*32+11) /* AMD flush-by-ASID support */
 211#define X86_FEATURE_DECODEASSISTS ( 8*32+12) /* AMD Decode Assists support */
 212#define X86_FEATURE_PAUSEFILTER ( 8*32+13) /* AMD filtered pause intercept */
 213#define X86_FEATURE_PFTHRESHOLD ( 8*32+14) /* AMD pause filter threshold */
 214#define X86_FEATURE_VMMCALL     ( 8*32+15) /* Prefer vmmcall to vmcall */
 215
 216
 217/* Intel-defined CPU features, CPUID level 0x00000007:0 (ebx), word 9 */
 218#define X86_FEATURE_FSGSBASE    ( 9*32+ 0) /* {RD/WR}{FS/GS}BASE instructions*/
 219#define X86_FEATURE_TSC_ADJUST  ( 9*32+ 1) /* TSC adjustment MSR 0x3b */
 220#define X86_FEATURE_BMI1        ( 9*32+ 3) /* 1st group bit manipulation extensions */
 221#define X86_FEATURE_HLE         ( 9*32+ 4) /* Hardware Lock Elision */
 222#define X86_FEATURE_AVX2        ( 9*32+ 5) /* AVX2 instructions */
 223#define X86_FEATURE_SMEP        ( 9*32+ 7) /* Supervisor Mode Execution Protection */
 224#define X86_FEATURE_BMI2        ( 9*32+ 8) /* 2nd group bit manipulation extensions */
 225#define X86_FEATURE_ERMS        ( 9*32+ 9) /* Enhanced REP MOVSB/STOSB */
 226#define X86_FEATURE_INVPCID     ( 9*32+10) /* Invalidate Processor Context ID */
 227#define X86_FEATURE_RTM         ( 9*32+11) /* Restricted Transactional Memory */
 228#define X86_FEATURE_MPX         ( 9*32+14) /* Memory Protection Extension */
 229#define X86_FEATURE_AVX512F     ( 9*32+16) /* AVX-512 Foundation */
 230#define X86_FEATURE_RDSEED      ( 9*32+18) /* The RDSEED instruction */
 231#define X86_FEATURE_ADX         ( 9*32+19) /* The ADCX and ADOX instructions */
 232#define X86_FEATURE_SMAP        ( 9*32+20) /* Supervisor Mode Access Prevention */
 233#define X86_FEATURE_CLFLUSHOPT  ( 9*32+23) /* CLFLUSHOPT instruction */
 234#define X86_FEATURE_AVX512PF    ( 9*32+26) /* AVX-512 Prefetch */
 235#define X86_FEATURE_AVX512ER    ( 9*32+27) /* AVX-512 Exponential and Reciprocal */
 236#define X86_FEATURE_AVX512CD    ( 9*32+28) /* AVX-512 Conflict Detection */
 237
 238/* Extended state features, CPUID level 0x0000000d:1 (eax), word 10 */
 239#define X86_FEATURE_XSAVEOPT    (10*32+ 0) /* XSAVEOPT */
 240#define X86_FEATURE_XSAVEC      (10*32+ 1) /* XSAVEC */
 241#define X86_FEATURE_XGETBV1     (10*32+ 2) /* XGETBV with ECX = 1 */
 242#define X86_FEATURE_XSAVES      (10*32+ 3) /* XSAVES/XRSTORS */
 243
 244/*
 245 * BUG word(s)
 246 */
 247#define X86_BUG(x)              (NCAPINTS*32 + (x))
 248
 249#define X86_BUG_F00F            X86_BUG(0) /* Intel F00F */
 250#define X86_BUG_FDIV            X86_BUG(1) /* FPU FDIV */
 251#define X86_BUG_COMA            X86_BUG(2) /* Cyrix 6x86 coma */
 252#define X86_BUG_AMD_TLB_MMATCH  X86_BUG(3) /* "tlb_mmatch" AMD Erratum 383 */
 253#define X86_BUG_AMD_APIC_C1E    X86_BUG(4) /* "apic_c1e" AMD Erratum 400 */
 254#define X86_BUG_11AP            X86_BUG(5) /* Bad local APIC aka 11AP */
 255#define X86_BUG_FXSAVE_LEAK     X86_BUG(6) /* FXSAVE leaks FOP/FIP/FOP */
 256#define X86_BUG_CLFLUSH_MONITOR X86_BUG(7) /* AAI65, CLFLUSH required before MONITOR */
 257
 258#if defined(__KERNEL__) && !defined(__ASSEMBLY__)
 259
 260#include <asm/asm.h>
 261#include <linux/bitops.h>
 262
 263#ifdef CONFIG_X86_FEATURE_NAMES
 264extern const char * const x86_cap_flags[NCAPINTS*32];
 265extern const char * const x86_power_flags[32];
 266#define X86_CAP_FMT "%s"
 267#define x86_cap_flag(flag) x86_cap_flags[flag]
 268#else
 269#define X86_CAP_FMT "%d:%d"
 270#define x86_cap_flag(flag) ((flag) >> 5), ((flag) & 31)
 271#endif
 272
 273/*
 274 * In order to save room, we index into this array by doing
 275 * X86_BUG_<name> - NCAPINTS*32.
 276 */
 277extern const char * const x86_bug_flags[NBUGINTS*32];
 278
 279#define test_cpu_cap(c, bit)                                            \
 280         test_bit(bit, (unsigned long *)((c)->x86_capability))
 281
 282#define REQUIRED_MASK_BIT_SET(bit)                                      \
 283         ( (((bit)>>5)==0 && (1UL<<((bit)&31) & REQUIRED_MASK0)) ||     \
 284           (((bit)>>5)==1 && (1UL<<((bit)&31) & REQUIRED_MASK1)) ||     \
 285           (((bit)>>5)==2 && (1UL<<((bit)&31) & REQUIRED_MASK2)) ||     \
 286           (((bit)>>5)==3 && (1UL<<((bit)&31) & REQUIRED_MASK3)) ||     \
 287           (((bit)>>5)==4 && (1UL<<((bit)&31) & REQUIRED_MASK4)) ||     \
 288           (((bit)>>5)==5 && (1UL<<((bit)&31) & REQUIRED_MASK5)) ||     \
 289           (((bit)>>5)==6 && (1UL<<((bit)&31) & REQUIRED_MASK6)) ||     \
 290           (((bit)>>5)==7 && (1UL<<((bit)&31) & REQUIRED_MASK7)) ||     \
 291           (((bit)>>5)==8 && (1UL<<((bit)&31) & REQUIRED_MASK8)) ||     \
 292           (((bit)>>5)==9 && (1UL<<((bit)&31) & REQUIRED_MASK9)) )
 293
 294#define DISABLED_MASK_BIT_SET(bit)                                      \
 295         ( (((bit)>>5)==0 && (1UL<<((bit)&31) & DISABLED_MASK0)) ||     \
 296           (((bit)>>5)==1 && (1UL<<((bit)&31) & DISABLED_MASK1)) ||     \
 297           (((bit)>>5)==2 && (1UL<<((bit)&31) & DISABLED_MASK2)) ||     \
 298           (((bit)>>5)==3 && (1UL<<((bit)&31) & DISABLED_MASK3)) ||     \
 299           (((bit)>>5)==4 && (1UL<<((bit)&31) & DISABLED_MASK4)) ||     \
 300           (((bit)>>5)==5 && (1UL<<((bit)&31) & DISABLED_MASK5)) ||     \
 301           (((bit)>>5)==6 && (1UL<<((bit)&31) & DISABLED_MASK6)) ||     \
 302           (((bit)>>5)==7 && (1UL<<((bit)&31) & DISABLED_MASK7)) ||     \
 303           (((bit)>>5)==8 && (1UL<<((bit)&31) & DISABLED_MASK8)) ||     \
 304           (((bit)>>5)==9 && (1UL<<((bit)&31) & DISABLED_MASK9)) )
 305
 306#define cpu_has(c, bit)                                                 \
 307        (__builtin_constant_p(bit) && REQUIRED_MASK_BIT_SET(bit) ? 1 :  \
 308         test_cpu_cap(c, bit))
 309
 310#define this_cpu_has(bit)                                               \
 311        (__builtin_constant_p(bit) && REQUIRED_MASK_BIT_SET(bit) ? 1 :  \
 312         x86_this_cpu_test_bit(bit, (unsigned long *)&cpu_info.x86_capability))
 313
 314/*
 315 * This macro is for detection of features which need kernel
 316 * infrastructure to be used.  It may *not* directly test the CPU
 317 * itself.  Use the cpu_has() family if you want true runtime
 318 * testing of CPU features, like in hypervisor code where you are
 319 * supporting a possible guest feature where host support for it
 320 * is not relevant.
 321 */
 322#define cpu_feature_enabled(bit)        \
 323        (__builtin_constant_p(bit) && DISABLED_MASK_BIT_SET(bit) ? 0 :  \
 324         cpu_has(&boot_cpu_data, bit))
 325
 326#define boot_cpu_has(bit)       cpu_has(&boot_cpu_data, bit)
 327
 328#define set_cpu_cap(c, bit)     set_bit(bit, (unsigned long *)((c)->x86_capability))
 329#define clear_cpu_cap(c, bit)   clear_bit(bit, (unsigned long *)((c)->x86_capability))
 330#define setup_clear_cpu_cap(bit) do { \
 331        clear_cpu_cap(&boot_cpu_data, bit);     \
 332        set_bit(bit, (unsigned long *)cpu_caps_cleared); \
 333} while (0)
 334#define setup_force_cpu_cap(bit) do { \
 335        set_cpu_cap(&boot_cpu_data, bit);       \
 336        set_bit(bit, (unsigned long *)cpu_caps_set);    \
 337} while (0)
 338
 339#define cpu_has_fpu             boot_cpu_has(X86_FEATURE_FPU)
 340#define cpu_has_de              boot_cpu_has(X86_FEATURE_DE)
 341#define cpu_has_pse             boot_cpu_has(X86_FEATURE_PSE)
 342#define cpu_has_tsc             boot_cpu_has(X86_FEATURE_TSC)
 343#define cpu_has_pge             boot_cpu_has(X86_FEATURE_PGE)
 344#define cpu_has_apic            boot_cpu_has(X86_FEATURE_APIC)
 345#define cpu_has_sep             boot_cpu_has(X86_FEATURE_SEP)
 346#define cpu_has_mtrr            boot_cpu_has(X86_FEATURE_MTRR)
 347#define cpu_has_mmx             boot_cpu_has(X86_FEATURE_MMX)
 348#define cpu_has_fxsr            boot_cpu_has(X86_FEATURE_FXSR)
 349#define cpu_has_xmm             boot_cpu_has(X86_FEATURE_XMM)
 350#define cpu_has_xmm2            boot_cpu_has(X86_FEATURE_XMM2)
 351#define cpu_has_xmm3            boot_cpu_has(X86_FEATURE_XMM3)
 352#define cpu_has_ssse3           boot_cpu_has(X86_FEATURE_SSSE3)
 353#define cpu_has_aes             boot_cpu_has(X86_FEATURE_AES)
 354#define cpu_has_avx             boot_cpu_has(X86_FEATURE_AVX)
 355#define cpu_has_avx2            boot_cpu_has(X86_FEATURE_AVX2)
 356#define cpu_has_ht              boot_cpu_has(X86_FEATURE_HT)
 357#define cpu_has_nx              boot_cpu_has(X86_FEATURE_NX)
 358#define cpu_has_xstore          boot_cpu_has(X86_FEATURE_XSTORE)
 359#define cpu_has_xstore_enabled  boot_cpu_has(X86_FEATURE_XSTORE_EN)
 360#define cpu_has_xcrypt          boot_cpu_has(X86_FEATURE_XCRYPT)
 361#define cpu_has_xcrypt_enabled  boot_cpu_has(X86_FEATURE_XCRYPT_EN)
 362#define cpu_has_ace2            boot_cpu_has(X86_FEATURE_ACE2)
 363#define cpu_has_ace2_enabled    boot_cpu_has(X86_FEATURE_ACE2_EN)
 364#define cpu_has_phe             boot_cpu_has(X86_FEATURE_PHE)
 365#define cpu_has_phe_enabled     boot_cpu_has(X86_FEATURE_PHE_EN)
 366#define cpu_has_pmm             boot_cpu_has(X86_FEATURE_PMM)
 367#define cpu_has_pmm_enabled     boot_cpu_has(X86_FEATURE_PMM_EN)
 368#define cpu_has_ds              boot_cpu_has(X86_FEATURE_DS)
 369#define cpu_has_pebs            boot_cpu_has(X86_FEATURE_PEBS)
 370#define cpu_has_clflush         boot_cpu_has(X86_FEATURE_CLFLUSH)
 371#define cpu_has_bts             boot_cpu_has(X86_FEATURE_BTS)
 372#define cpu_has_gbpages         boot_cpu_has(X86_FEATURE_GBPAGES)
 373#define cpu_has_arch_perfmon    boot_cpu_has(X86_FEATURE_ARCH_PERFMON)
 374#define cpu_has_pat             boot_cpu_has(X86_FEATURE_PAT)
 375#define cpu_has_xmm4_1          boot_cpu_has(X86_FEATURE_XMM4_1)
 376#define cpu_has_xmm4_2          boot_cpu_has(X86_FEATURE_XMM4_2)
 377#define cpu_has_x2apic          boot_cpu_has(X86_FEATURE_X2APIC)
 378#define cpu_has_xsave           boot_cpu_has(X86_FEATURE_XSAVE)
 379#define cpu_has_xsaveopt        boot_cpu_has(X86_FEATURE_XSAVEOPT)
 380#define cpu_has_xsaves          boot_cpu_has(X86_FEATURE_XSAVES)
 381#define cpu_has_osxsave         boot_cpu_has(X86_FEATURE_OSXSAVE)
 382#define cpu_has_hypervisor      boot_cpu_has(X86_FEATURE_HYPERVISOR)
 383#define cpu_has_pclmulqdq       boot_cpu_has(X86_FEATURE_PCLMULQDQ)
 384#define cpu_has_perfctr_core    boot_cpu_has(X86_FEATURE_PERFCTR_CORE)
 385#define cpu_has_perfctr_nb      boot_cpu_has(X86_FEATURE_PERFCTR_NB)
 386#define cpu_has_perfctr_l2      boot_cpu_has(X86_FEATURE_PERFCTR_L2)
 387#define cpu_has_cx8             boot_cpu_has(X86_FEATURE_CX8)
 388#define cpu_has_cx16            boot_cpu_has(X86_FEATURE_CX16)
 389#define cpu_has_eager_fpu       boot_cpu_has(X86_FEATURE_EAGER_FPU)
 390#define cpu_has_topoext         boot_cpu_has(X86_FEATURE_TOPOEXT)
 391
 392#if __GNUC__ >= 4
 393extern void warn_pre_alternatives(void);
 394extern bool __static_cpu_has_safe(u16 bit);
 395
 396/*
 397 * Static testing of CPU features.  Used the same as boot_cpu_has().
 398 * These are only valid after alternatives have run, but will statically
 399 * patch the target code for additional performance.
 400 */
 401static __always_inline __pure bool __static_cpu_has(u16 bit)
 402{
 403#ifdef CC_HAVE_ASM_GOTO
 404
 405#ifdef CONFIG_X86_DEBUG_STATIC_CPU_HAS
 406
 407                /*
 408                 * Catch too early usage of this before alternatives
 409                 * have run.
 410                 */
 411                asm_volatile_goto("1: jmp %l[t_warn]\n"
 412                         "2:\n"
 413                         ".section .altinstructions,\"a\"\n"
 414                         " .long 1b - .\n"
 415                         " .long 0\n"           /* no replacement */
 416                         " .word %P0\n"         /* 1: do replace */
 417                         " .byte 2b - 1b\n"     /* source len */
 418                         " .byte 0\n"           /* replacement len */
 419                         ".previous\n"
 420                         /* skipping size check since replacement size = 0 */
 421                         : : "i" (X86_FEATURE_ALWAYS) : : t_warn);
 422
 423#endif
 424
 425                asm_volatile_goto("1: jmp %l[t_no]\n"
 426                         "2:\n"
 427                         ".section .altinstructions,\"a\"\n"
 428                         " .long 1b - .\n"
 429                         " .long 0\n"           /* no replacement */
 430                         " .word %P0\n"         /* feature bit */
 431                         " .byte 2b - 1b\n"     /* source len */
 432                         " .byte 0\n"           /* replacement len */
 433                         ".previous\n"
 434                         /* skipping size check since replacement size = 0 */
 435                         : : "i" (bit) : : t_no);
 436                return true;
 437        t_no:
 438                return false;
 439
 440#ifdef CONFIG_X86_DEBUG_STATIC_CPU_HAS
 441        t_warn:
 442                warn_pre_alternatives();
 443                return false;
 444#endif
 445
 446#else /* CC_HAVE_ASM_GOTO */
 447
 448                u8 flag;
 449                /* Open-coded due to __stringify() in ALTERNATIVE() */
 450                asm volatile("1: movb $0,%0\n"
 451                             "2:\n"
 452                             ".section .altinstructions,\"a\"\n"
 453                             " .long 1b - .\n"
 454                             " .long 3f - .\n"
 455                             " .word %P1\n"             /* feature bit */
 456                             " .byte 2b - 1b\n"         /* source len */
 457                             " .byte 4f - 3f\n"         /* replacement len */
 458                             ".previous\n"
 459                             ".section .discard,\"aw\",@progbits\n"
 460                             " .byte 0xff + (4f-3f) - (2b-1b)\n" /* size check */
 461                             ".previous\n"
 462                             ".section .altinstr_replacement,\"ax\"\n"
 463                             "3: movb $1,%0\n"
 464                             "4:\n"
 465                             ".previous\n"
 466                             : "=qm" (flag) : "i" (bit));
 467                return flag;
 468
 469#endif /* CC_HAVE_ASM_GOTO */
 470}
 471
 472#define static_cpu_has(bit)                                     \
 473(                                                               \
 474        __builtin_constant_p(boot_cpu_has(bit)) ?               \
 475                boot_cpu_has(bit) :                             \
 476        __builtin_constant_p(bit) ?                             \
 477                __static_cpu_has(bit) :                         \
 478                boot_cpu_has(bit)                               \
 479)
 480
 481static __always_inline __pure bool _static_cpu_has_safe(u16 bit)
 482{
 483#ifdef CC_HAVE_ASM_GOTO
 484/*
 485 * We need to spell the jumps to the compiler because, depending on the offset,
 486 * the replacement jump can be bigger than the original jump, and this we cannot
 487 * have. Thus, we force the jump to the widest, 4-byte, signed relative
 488 * offset even though the last would often fit in less bytes.
 489 */
 490                asm_volatile_goto("1: .byte 0xe9\n .long %l[t_dynamic] - 2f\n"
 491                         "2:\n"
 492                         ".section .altinstructions,\"a\"\n"
 493                         " .long 1b - .\n"              /* src offset */
 494                         " .long 3f - .\n"              /* repl offset */
 495                         " .word %P1\n"                 /* always replace */
 496                         " .byte 2b - 1b\n"             /* src len */
 497                         " .byte 4f - 3f\n"             /* repl len */
 498                         ".previous\n"
 499                         ".section .altinstr_replacement,\"ax\"\n"
 500                         "3: .byte 0xe9\n .long %l[t_no] - 2b\n"
 501                         "4:\n"
 502                         ".previous\n"
 503                         ".section .altinstructions,\"a\"\n"
 504                         " .long 1b - .\n"              /* src offset */
 505                         " .long 0\n"                   /* no replacement */
 506                         " .word %P0\n"                 /* feature bit */
 507                         " .byte 2b - 1b\n"             /* src len */
 508                         " .byte 0\n"                   /* repl len */
 509                         ".previous\n"
 510                         : : "i" (bit), "i" (X86_FEATURE_ALWAYS)
 511                         : : t_dynamic, t_no);
 512                return true;
 513        t_no:
 514                return false;
 515        t_dynamic:
 516                return __static_cpu_has_safe(bit);
 517#else
 518                u8 flag;
 519                /* Open-coded due to __stringify() in ALTERNATIVE() */
 520                asm volatile("1: movb $2,%0\n"
 521                             "2:\n"
 522                             ".section .altinstructions,\"a\"\n"
 523                             " .long 1b - .\n"          /* src offset */
 524                             " .long 3f - .\n"          /* repl offset */
 525                             " .word %P2\n"             /* always replace */
 526                             " .byte 2b - 1b\n"         /* source len */
 527                             " .byte 4f - 3f\n"         /* replacement len */
 528                             ".previous\n"
 529                             ".section .discard,\"aw\",@progbits\n"
 530                             " .byte 0xff + (4f-3f) - (2b-1b)\n" /* size check */
 531                             ".previous\n"
 532                             ".section .altinstr_replacement,\"ax\"\n"
 533                             "3: movb $0,%0\n"
 534                             "4:\n"
 535                             ".previous\n"
 536                             ".section .altinstructions,\"a\"\n"
 537                             " .long 1b - .\n"          /* src offset */
 538                             " .long 5f - .\n"          /* repl offset */
 539                             " .word %P1\n"             /* feature bit */
 540                             " .byte 4b - 3b\n"         /* src len */
 541                             " .byte 6f - 5f\n"         /* repl len */
 542                             ".previous\n"
 543                             ".section .discard,\"aw\",@progbits\n"
 544                             " .byte 0xff + (6f-5f) - (4b-3b)\n" /* size check */
 545                             ".previous\n"
 546                             ".section .altinstr_replacement,\"ax\"\n"
 547                             "5: movb $1,%0\n"
 548                             "6:\n"
 549                             ".previous\n"
 550                             : "=qm" (flag)
 551                             : "i" (bit), "i" (X86_FEATURE_ALWAYS));
 552                return (flag == 2 ? __static_cpu_has_safe(bit) : flag);
 553#endif /* CC_HAVE_ASM_GOTO */
 554}
 555
 556#define static_cpu_has_safe(bit)                                \
 557(                                                               \
 558        __builtin_constant_p(boot_cpu_has(bit)) ?               \
 559                boot_cpu_has(bit) :                             \
 560                _static_cpu_has_safe(bit)                       \
 561)
 562#else
 563/*
 564 * gcc 3.x is too stupid to do the static test; fall back to dynamic.
 565 */
 566#define static_cpu_has(bit)             boot_cpu_has(bit)
 567#define static_cpu_has_safe(bit)        boot_cpu_has(bit)
 568#endif
 569
 570#define cpu_has_bug(c, bit)             cpu_has(c, (bit))
 571#define set_cpu_bug(c, bit)             set_cpu_cap(c, (bit))
 572#define clear_cpu_bug(c, bit)           clear_cpu_cap(c, (bit))
 573
 574#define static_cpu_has_bug(bit)         static_cpu_has((bit))
 575#define static_cpu_has_bug_safe(bit)    static_cpu_has_safe((bit))
 576#define boot_cpu_has_bug(bit)           cpu_has_bug(&boot_cpu_data, (bit))
 577
 578#define MAX_CPU_FEATURES                (NCAPINTS * 32)
 579#define cpu_have_feature                boot_cpu_has
 580
 581#define CPU_FEATURE_TYPEFMT             "x86,ven%04Xfam%04Xmod%04X"
 582#define CPU_FEATURE_TYPEVAL             boot_cpu_data.x86_vendor, boot_cpu_data.x86, \
 583                                        boot_cpu_data.x86_model
 584
 585#endif /* defined(__KERNEL__) && !defined(__ASSEMBLY__) */
 586#endif /* _ASM_X86_CPUFEATURE_H */
 587