| /* |
| * Defines x86 CPU feature bits |
| */ |
| #ifndef _ASM_X86_CPUFEATURE_H |
| #define _ASM_X86_CPUFEATURE_H |
| |
| #ifndef _ASM_X86_REQUIRED_FEATURES_H |
| #include <asm/required-features.h> |
| #endif |
| |
| #ifndef _ASM_X86_DISABLED_FEATURES_H |
| #include <asm/disabled-features.h> |
| #endif |
| |
| #define NCAPINTS 13 /* N 32-bit words worth of info */ |
| #define NBUGINTS 1 /* N 32-bit bug flags */ |
| |
| /* |
| * Note: If the comment begins with a quoted string, that string is used |
| * in /proc/cpuinfo instead of the macro name. If the string is "", |
| * this feature bit is not displayed in /proc/cpuinfo at all. |
| */ |
| |
| /* Intel-defined CPU features, CPUID level 0x00000001 (edx), word 0 */ |
| #define X86_FEATURE_FPU ( 0*32+ 0) /* Onboard FPU */ |
| #define X86_FEATURE_VME ( 0*32+ 1) /* Virtual Mode Extensions */ |
| #define X86_FEATURE_DE ( 0*32+ 2) /* Debugging Extensions */ |
| #define X86_FEATURE_PSE ( 0*32+ 3) /* Page Size Extensions */ |
| #define X86_FEATURE_TSC ( 0*32+ 4) /* Time Stamp Counter */ |
| #define X86_FEATURE_MSR ( 0*32+ 5) /* Model-Specific Registers */ |
| #define X86_FEATURE_PAE ( 0*32+ 6) /* Physical Address Extensions */ |
| #define X86_FEATURE_MCE ( 0*32+ 7) /* Machine Check Exception */ |
| #define X86_FEATURE_CX8 ( 0*32+ 8) /* CMPXCHG8 instruction */ |
| #define X86_FEATURE_APIC ( 0*32+ 9) /* Onboard APIC */ |
| #define X86_FEATURE_SEP ( 0*32+11) /* SYSENTER/SYSEXIT */ |
| #define X86_FEATURE_MTRR ( 0*32+12) /* Memory Type Range Registers */ |
| #define X86_FEATURE_PGE ( 0*32+13) /* Page Global Enable */ |
| #define X86_FEATURE_MCA ( 0*32+14) /* Machine Check Architecture */ |
| #define X86_FEATURE_CMOV ( 0*32+15) /* CMOV instructions */ |
| /* (plus FCMOVcc, FCOMI with FPU) */ |
| #define X86_FEATURE_PAT ( 0*32+16) /* Page Attribute Table */ |
| #define X86_FEATURE_PSE36 ( 0*32+17) /* 36-bit PSEs */ |
| #define X86_FEATURE_PN ( 0*32+18) /* Processor serial number */ |
| #define X86_FEATURE_CLFLUSH ( 0*32+19) /* CLFLUSH instruction */ |
| #define X86_FEATURE_DS ( 0*32+21) /* "dts" Debug Store */ |
| #define X86_FEATURE_ACPI ( 0*32+22) /* ACPI via MSR */ |
| #define X86_FEATURE_MMX ( 0*32+23) /* Multimedia Extensions */ |
| #define X86_FEATURE_FXSR ( 0*32+24) /* FXSAVE/FXRSTOR, CR4.OSFXSR */ |
| #define X86_FEATURE_XMM ( 0*32+25) /* "sse" */ |
| #define X86_FEATURE_XMM2 ( 0*32+26) /* "sse2" */ |
| #define X86_FEATURE_SELFSNOOP ( 0*32+27) /* "ss" CPU self snoop */ |
| #define X86_FEATURE_HT ( 0*32+28) /* Hyper-Threading */ |
| #define X86_FEATURE_ACC ( 0*32+29) /* "tm" Automatic clock control */ |
| #define X86_FEATURE_IA64 ( 0*32+30) /* IA-64 processor */ |
| #define X86_FEATURE_PBE ( 0*32+31) /* Pending Break Enable */ |
| |
| /* AMD-defined CPU features, CPUID level 0x80000001, word 1 */ |
| /* Don't duplicate feature flags which are redundant with Intel! */ |
| #define X86_FEATURE_SYSCALL ( 1*32+11) /* SYSCALL/SYSRET */ |
| #define X86_FEATURE_MP ( 1*32+19) /* MP Capable. */ |
| #define X86_FEATURE_NX ( 1*32+20) /* Execute Disable */ |
| #define X86_FEATURE_MMXEXT ( 1*32+22) /* AMD MMX extensions */ |
| #define X86_FEATURE_FXSR_OPT ( 1*32+25) /* FXSAVE/FXRSTOR optimizations */ |
| #define X86_FEATURE_GBPAGES ( 1*32+26) /* "pdpe1gb" GB pages */ |
| #define X86_FEATURE_RDTSCP ( 1*32+27) /* RDTSCP */ |
| #define X86_FEATURE_LM ( 1*32+29) /* Long Mode (x86-64) */ |
| #define X86_FEATURE_3DNOWEXT ( 1*32+30) /* AMD 3DNow! extensions */ |
| #define X86_FEATURE_3DNOW ( 1*32+31) /* 3DNow! */ |
| |
| /* Transmeta-defined CPU features, CPUID level 0x80860001, word 2 */ |
| #define X86_FEATURE_RECOVERY ( 2*32+ 0) /* CPU in recovery mode */ |
| #define X86_FEATURE_LONGRUN ( 2*32+ 1) /* Longrun power control */ |
| #define X86_FEATURE_LRTI ( 2*32+ 3) /* LongRun table interface */ |
| |
| /* Other features, Linux-defined mapping, word 3 */ |
| /* This range is used for feature bits which conflict or are synthesized */ |
| #define X86_FEATURE_CXMMX ( 3*32+ 0) /* Cyrix MMX extensions */ |
| #define X86_FEATURE_K6_MTRR ( 3*32+ 1) /* AMD K6 nonstandard MTRRs */ |
| #define X86_FEATURE_CYRIX_ARR ( 3*32+ 2) /* Cyrix ARRs (= MTRRs) */ |
| #define X86_FEATURE_CENTAUR_MCR ( 3*32+ 3) /* Centaur MCRs (= MTRRs) */ |
| /* cpu types for specific tunings: */ |
| #define X86_FEATURE_K8 ( 3*32+ 4) /* "" Opteron, Athlon64 */ |
| #define X86_FEATURE_K7 ( 3*32+ 5) /* "" Athlon */ |
| #define X86_FEATURE_P3 ( 3*32+ 6) /* "" P3 */ |
| #define X86_FEATURE_P4 ( 3*32+ 7) /* "" P4 */ |
| #define X86_FEATURE_CONSTANT_TSC ( 3*32+ 8) /* TSC ticks at a constant rate */ |
| #define X86_FEATURE_UP ( 3*32+ 9) /* smp kernel running on up */ |
| /* free, was #define X86_FEATURE_FXSAVE_LEAK ( 3*32+10) * "" FXSAVE leaks FOP/FIP/FOP */ |
| #define X86_FEATURE_ARCH_PERFMON ( 3*32+11) /* Intel Architectural PerfMon */ |
| #define X86_FEATURE_PEBS ( 3*32+12) /* Precise-Event Based Sampling */ |
| #define X86_FEATURE_BTS ( 3*32+13) /* Branch Trace Store */ |
| #define X86_FEATURE_SYSCALL32 ( 3*32+14) /* "" syscall in ia32 userspace */ |
| #define X86_FEATURE_SYSENTER32 ( 3*32+15) /* "" sysenter in ia32 userspace */ |
| #define X86_FEATURE_REP_GOOD ( 3*32+16) /* rep microcode works well */ |
| #define X86_FEATURE_MFENCE_RDTSC ( 3*32+17) /* "" Mfence synchronizes RDTSC */ |
| #define X86_FEATURE_LFENCE_RDTSC ( 3*32+18) /* "" Lfence synchronizes RDTSC */ |
| /* free, was #define X86_FEATURE_11AP ( 3*32+19) * "" Bad local APIC aka 11AP */ |
| #define X86_FEATURE_NOPL ( 3*32+20) /* The NOPL (0F 1F) instructions */ |
| #define X86_FEATURE_ALWAYS ( 3*32+21) /* "" Always-present feature */ |
| #define X86_FEATURE_XTOPOLOGY ( 3*32+22) /* cpu topology enum extensions */ |
| #define X86_FEATURE_TSC_RELIABLE ( 3*32+23) /* TSC is known to be reliable */ |
| #define X86_FEATURE_NONSTOP_TSC ( 3*32+24) /* TSC does not stop in C states */ |
| /* free, was #define X86_FEATURE_CLFLUSH_MONITOR ( 3*32+25) * "" clflush reqd with monitor */ |
| #define X86_FEATURE_EXTD_APICID ( 3*32+26) /* has extended APICID (8 bits) */ |
| #define X86_FEATURE_AMD_DCM ( 3*32+27) /* multi-node processor */ |
| #define X86_FEATURE_APERFMPERF ( 3*32+28) /* APERFMPERF */ |
| #define X86_FEATURE_EAGER_FPU ( 3*32+29) /* "eagerfpu" Non lazy FPU restore */ |
| #define X86_FEATURE_NONSTOP_TSC_S3 ( 3*32+30) /* TSC doesn't stop in S3 state */ |
| |
| /* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */ |
| #define X86_FEATURE_XMM3 ( 4*32+ 0) /* "pni" SSE-3 */ |
| #define X86_FEATURE_PCLMULQDQ ( 4*32+ 1) /* PCLMULQDQ instruction */ |
| #define X86_FEATURE_DTES64 ( 4*32+ 2) /* 64-bit Debug Store */ |
| #define X86_FEATURE_MWAIT ( 4*32+ 3) /* "monitor" Monitor/Mwait support */ |
| #define X86_FEATURE_DSCPL ( 4*32+ 4) /* "ds_cpl" CPL Qual. Debug Store */ |
| #define X86_FEATURE_VMX ( 4*32+ 5) /* Hardware virtualization */ |
| #define X86_FEATURE_SMX ( 4*32+ 6) /* Safer mode */ |
| #define X86_FEATURE_EST ( 4*32+ 7) /* Enhanced SpeedStep */ |
| #define X86_FEATURE_TM2 ( 4*32+ 8) /* Thermal Monitor 2 */ |
| #define X86_FEATURE_SSSE3 ( 4*32+ 9) /* Supplemental SSE-3 */ |
| #define X86_FEATURE_CID ( 4*32+10) /* Context ID */ |
| #define X86_FEATURE_FMA ( 4*32+12) /* Fused multiply-add */ |
| #define X86_FEATURE_CX16 ( 4*32+13) /* CMPXCHG16B */ |
| #define X86_FEATURE_XTPR ( 4*32+14) /* Send Task Priority Messages */ |
| #define X86_FEATURE_PDCM ( 4*32+15) /* Performance Capabilities */ |
| #define X86_FEATURE_PCID ( 4*32+17) /* Process Context Identifiers */ |
| #define X86_FEATURE_DCA ( 4*32+18) /* Direct Cache Access */ |
| #define X86_FEATURE_XMM4_1 ( 4*32+19) /* "sse4_1" SSE-4.1 */ |
| #define X86_FEATURE_XMM4_2 ( 4*32+20) /* "sse4_2" SSE-4.2 */ |
| #define X86_FEATURE_X2APIC ( 4*32+21) /* x2APIC */ |
| #define X86_FEATURE_MOVBE ( 4*32+22) /* MOVBE instruction */ |
| #define X86_FEATURE_POPCNT ( 4*32+23) /* POPCNT instruction */ |
| #define X86_FEATURE_TSC_DEADLINE_TIMER ( 4*32+24) /* Tsc deadline timer */ |
| #define X86_FEATURE_AES ( 4*32+25) /* AES instructions */ |
| #define X86_FEATURE_XSAVE ( 4*32+26) /* XSAVE/XRSTOR/XSETBV/XGETBV */ |
| #define X86_FEATURE_OSXSAVE ( 4*32+27) /* "" XSAVE enabled in the OS */ |
| #define X86_FEATURE_AVX ( 4*32+28) /* Advanced Vector Extensions */ |
| #define X86_FEATURE_F16C ( 4*32+29) /* 16-bit fp conversions */ |
| #define X86_FEATURE_RDRAND ( 4*32+30) /* The RDRAND instruction */ |
| #define X86_FEATURE_HYPERVISOR ( 4*32+31) /* Running on a hypervisor */ |
| |
| /* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */ |
| #define X86_FEATURE_XSTORE ( 5*32+ 2) /* "rng" RNG present (xstore) */ |
| #define X86_FEATURE_XSTORE_EN ( 5*32+ 3) /* "rng_en" RNG enabled */ |
| #define X86_FEATURE_XCRYPT ( 5*32+ 6) /* "ace" on-CPU crypto (xcrypt) */ |
| #define X86_FEATURE_XCRYPT_EN ( 5*32+ 7) /* "ace_en" on-CPU crypto enabled */ |
| #define X86_FEATURE_ACE2 ( 5*32+ 8) /* Advanced Cryptography Engine v2 */ |
| #define X86_FEATURE_ACE2_EN ( 5*32+ 9) /* ACE v2 enabled */ |
| #define X86_FEATURE_PHE ( 5*32+10) /* PadLock Hash Engine */ |
| #define X86_FEATURE_PHE_EN ( 5*32+11) /* PHE enabled */ |
| #define X86_FEATURE_PMM ( 5*32+12) /* PadLock Montgomery Multiplier */ |
| #define X86_FEATURE_PMM_EN ( 5*32+13) /* PMM enabled */ |
| |
| /* More extended AMD flags: CPUID level 0x80000001, ecx, word 6 */ |
| #define X86_FEATURE_LAHF_LM ( 6*32+ 0) /* LAHF/SAHF in long mode */ |
| #define X86_FEATURE_CMP_LEGACY ( 6*32+ 1) /* If yes HyperThreading not valid */ |
| #define X86_FEATURE_SVM ( 6*32+ 2) /* Secure virtual machine */ |
| #define X86_FEATURE_EXTAPIC ( 6*32+ 3) /* Extended APIC space */ |
| #define X86_FEATURE_CR8_LEGACY ( 6*32+ 4) /* CR8 in 32-bit mode */ |
| #define X86_FEATURE_ABM ( 6*32+ 5) /* Advanced bit manipulation */ |
| #define X86_FEATURE_SSE4A ( 6*32+ 6) /* SSE-4A */ |
| #define X86_FEATURE_MISALIGNSSE ( 6*32+ 7) /* Misaligned SSE mode */ |
| #define X86_FEATURE_3DNOWPREFETCH ( 6*32+ 8) /* 3DNow prefetch instructions */ |
| #define X86_FEATURE_OSVW ( 6*32+ 9) /* OS Visible Workaround */ |
| #define X86_FEATURE_IBS ( 6*32+10) /* Instruction Based Sampling */ |
| #define X86_FEATURE_XOP ( 6*32+11) /* extended AVX instructions */ |
| #define X86_FEATURE_SKINIT ( 6*32+12) /* SKINIT/STGI instructions */ |
| #define X86_FEATURE_WDT ( 6*32+13) /* Watchdog timer */ |
| #define X86_FEATURE_LWP ( 6*32+15) /* Light Weight Profiling */ |
| #define X86_FEATURE_FMA4 ( 6*32+16) /* 4 operands MAC instructions */ |
| #define X86_FEATURE_TCE ( 6*32+17) /* translation cache extension */ |
| #define X86_FEATURE_NODEID_MSR ( 6*32+19) /* NodeId MSR */ |
| #define X86_FEATURE_TBM ( 6*32+21) /* trailing bit manipulations */ |
| #define X86_FEATURE_TOPOEXT ( 6*32+22) /* topology extensions CPUID leafs */ |
| #define X86_FEATURE_PERFCTR_CORE ( 6*32+23) /* core performance counter extensions */ |
| #define X86_FEATURE_PERFCTR_NB ( 6*32+24) /* NB performance counter extensions */ |
| #define X86_FEATURE_BPEXT (6*32+26) /* data breakpoint extension */ |
| #define X86_FEATURE_PERFCTR_L2 ( 6*32+28) /* L2 performance counter extensions */ |
| |
| /* |
| * Auxiliary flags: Linux defined - For features scattered in various |
| * CPUID levels like 0x6, 0xA etc, word 7 |
| */ |
| #define X86_FEATURE_IDA ( 7*32+ 0) /* Intel Dynamic Acceleration */ |
| #define X86_FEATURE_ARAT ( 7*32+ 1) /* Always Running APIC Timer */ |
| #define X86_FEATURE_CPB ( 7*32+ 2) /* AMD Core Performance Boost */ |
| #define X86_FEATURE_EPB ( 7*32+ 3) /* IA32_ENERGY_PERF_BIAS support */ |
| #define X86_FEATURE_PLN ( 7*32+ 5) /* Intel Power Limit Notification */ |
| #define X86_FEATURE_PTS ( 7*32+ 6) /* Intel Package Thermal Status */ |
| #define X86_FEATURE_DTHERM ( 7*32+ 7) /* Digital Thermal Sensor */ |
| #define X86_FEATURE_HW_PSTATE ( 7*32+ 8) /* AMD HW-PState */ |
| #define X86_FEATURE_PROC_FEEDBACK ( 7*32+ 9) /* AMD ProcFeedbackInterface */ |
| #define X86_FEATURE_HWP ( 7*32+ 10) /* "hwp" Intel HWP */ |
| #define X86_FEATURE_HWP_NOITFY ( 7*32+ 11) /* Intel HWP_NOTIFY */ |
| #define X86_FEATURE_HWP_ACT_WINDOW ( 7*32+ 12) /* Intel HWP_ACT_WINDOW */ |
| #define X86_FEATURE_HWP_EPP ( 7*32+13) /* Intel HWP_EPP */ |
| #define X86_FEATURE_HWP_PKG_REQ ( 7*32+14) /* Intel HWP_PKG_REQ */ |
| #define X86_FEATURE_INTEL_PT ( 7*32+15) /* Intel Processor Trace */ |
| |
| /* Virtualization flags: Linux defined, word 8 */ |
| #define X86_FEATURE_TPR_SHADOW ( 8*32+ 0) /* Intel TPR Shadow */ |
| #define X86_FEATURE_VNMI ( 8*32+ 1) /* Intel Virtual NMI */ |
| #define X86_FEATURE_FLEXPRIORITY ( 8*32+ 2) /* Intel FlexPriority */ |
| #define X86_FEATURE_EPT ( 8*32+ 3) /* Intel Extended Page Table */ |
| #define X86_FEATURE_VPID ( 8*32+ 4) /* Intel Virtual Processor ID */ |
| #define X86_FEATURE_NPT ( 8*32+ 5) /* AMD Nested Page Table support */ |
| #define X86_FEATURE_LBRV ( 8*32+ 6) /* AMD LBR Virtualization support */ |
| #define X86_FEATURE_SVML ( 8*32+ 7) /* "svm_lock" AMD SVM locking MSR */ |
| #define X86_FEATURE_NRIPS ( 8*32+ 8) /* "nrip_save" AMD SVM next_rip save */ |
| #define X86_FEATURE_TSCRATEMSR ( 8*32+ 9) /* "tsc_scale" AMD TSC scaling support */ |
| #define X86_FEATURE_VMCBCLEAN ( 8*32+10) /* "vmcb_clean" AMD VMCB clean bits support */ |
| #define X86_FEATURE_FLUSHBYASID ( 8*32+11) /* AMD flush-by-ASID support */ |
| #define X86_FEATURE_DECODEASSISTS ( 8*32+12) /* AMD Decode Assists support */ |
| #define X86_FEATURE_PAUSEFILTER ( 8*32+13) /* AMD filtered pause intercept */ |
| #define X86_FEATURE_PFTHRESHOLD ( 8*32+14) /* AMD pause filter threshold */ |
| #define X86_FEATURE_VMMCALL ( 8*32+15) /* Prefer vmmcall to vmcall */ |
| |
| |
| /* Intel-defined CPU features, CPUID level 0x00000007:0 (ebx), word 9 */ |
| #define X86_FEATURE_FSGSBASE ( 9*32+ 0) /* {RD/WR}{FS/GS}BASE instructions*/ |
| #define X86_FEATURE_TSC_ADJUST ( 9*32+ 1) /* TSC adjustment MSR 0x3b */ |
| #define X86_FEATURE_BMI1 ( 9*32+ 3) /* 1st group bit manipulation extensions */ |
| #define X86_FEATURE_HLE ( 9*32+ 4) /* Hardware Lock Elision */ |
| #define X86_FEATURE_AVX2 ( 9*32+ 5) /* AVX2 instructions */ |
| #define X86_FEATURE_SMEP ( 9*32+ 7) /* Supervisor Mode Execution Protection */ |
| #define X86_FEATURE_BMI2 ( 9*32+ 8) /* 2nd group bit manipulation extensions */ |
| #define X86_FEATURE_ERMS ( 9*32+ 9) /* Enhanced REP MOVSB/STOSB */ |
| #define X86_FEATURE_INVPCID ( 9*32+10) /* Invalidate Processor Context ID */ |
| #define X86_FEATURE_RTM ( 9*32+11) /* Restricted Transactional Memory */ |
| #define X86_FEATURE_CQM ( 9*32+12) /* Cache QoS Monitoring */ |
| #define X86_FEATURE_MPX ( 9*32+14) /* Memory Protection Extension */ |
| #define X86_FEATURE_AVX512F ( 9*32+16) /* AVX-512 Foundation */ |
| #define X86_FEATURE_RDSEED ( 9*32+18) /* The RDSEED instruction */ |
| #define X86_FEATURE_ADX ( 9*32+19) /* The ADCX and ADOX instructions */ |
| #define X86_FEATURE_SMAP ( 9*32+20) /* Supervisor Mode Access Prevention */ |
| #define X86_FEATURE_PCOMMIT ( 9*32+22) /* PCOMMIT instruction */ |
| #define X86_FEATURE_CLFLUSHOPT ( 9*32+23) /* CLFLUSHOPT instruction */ |
| #define X86_FEATURE_CLWB ( 9*32+24) /* CLWB instruction */ |
| #define X86_FEATURE_AVX512PF ( 9*32+26) /* AVX-512 Prefetch */ |
| #define X86_FEATURE_AVX512ER ( 9*32+27) /* AVX-512 Exponential and Reciprocal */ |
| #define X86_FEATURE_AVX512CD ( 9*32+28) /* AVX-512 Conflict Detection */ |
| |
| /* Extended state features, CPUID level 0x0000000d:1 (eax), word 10 */ |
| #define X86_FEATURE_XSAVEOPT (10*32+ 0) /* XSAVEOPT */ |
| #define X86_FEATURE_XSAVEC (10*32+ 1) /* XSAVEC */ |
| #define X86_FEATURE_XGETBV1 (10*32+ 2) /* XGETBV with ECX = 1 */ |
| #define X86_FEATURE_XSAVES (10*32+ 3) /* XSAVES/XRSTORS */ |
| |
| /* Intel-defined CPU QoS Sub-leaf, CPUID level 0x0000000F:0 (edx), word 11 */ |
| #define X86_FEATURE_CQM_LLC (11*32+ 1) /* LLC QoS if 1 */ |
| |
| /* Intel-defined CPU QoS Sub-leaf, CPUID level 0x0000000F:1 (edx), word 12 */ |
| #define X86_FEATURE_CQM_OCCUP_LLC (12*32+ 0) /* LLC occupancy monitoring if 1 */ |
| |
| /* |
| * BUG word(s) |
| */ |
| #define X86_BUG(x) (NCAPINTS*32 + (x)) |
| |
| #define X86_BUG_F00F X86_BUG(0) /* Intel F00F */ |
| #define X86_BUG_FDIV X86_BUG(1) /* FPU FDIV */ |
| #define X86_BUG_COMA X86_BUG(2) /* Cyrix 6x86 coma */ |
| #define X86_BUG_AMD_TLB_MMATCH X86_BUG(3) /* "tlb_mmatch" AMD Erratum 383 */ |
| #define X86_BUG_AMD_APIC_C1E X86_BUG(4) /* "apic_c1e" AMD Erratum 400 */ |
| #define X86_BUG_11AP X86_BUG(5) /* Bad local APIC aka 11AP */ |
| #define X86_BUG_FXSAVE_LEAK X86_BUG(6) /* FXSAVE leaks FOP/FIP/FOP */ |
| #define X86_BUG_CLFLUSH_MONITOR X86_BUG(7) /* AAI65, CLFLUSH required before MONITOR */ |
| #define X86_BUG_SYSRET_SS_ATTRS X86_BUG(8) /* SYSRET doesn't fix up SS attrs */ |
| |
| #if defined(__KERNEL__) && !defined(__ASSEMBLY__) |
| |
| #include <asm/asm.h> |
| #include <linux/bitops.h> |
| |
| #ifdef CONFIG_X86_FEATURE_NAMES |
| extern const char * const x86_cap_flags[NCAPINTS*32]; |
| extern const char * const x86_power_flags[32]; |
| #define X86_CAP_FMT "%s" |
| #define x86_cap_flag(flag) x86_cap_flags[flag] |
| #else |
| #define X86_CAP_FMT "%d:%d" |
| #define x86_cap_flag(flag) ((flag) >> 5), ((flag) & 31) |
| #endif |
| |
| /* |
| * In order to save room, we index into this array by doing |
| * X86_BUG_<name> - NCAPINTS*32. |
| */ |
| extern const char * const x86_bug_flags[NBUGINTS*32]; |
| |
| #define test_cpu_cap(c, bit) \ |
| test_bit(bit, (unsigned long *)((c)->x86_capability)) |
| |
| #define REQUIRED_MASK_BIT_SET(bit) \ |
| ( (((bit)>>5)==0 && (1UL<<((bit)&31) & REQUIRED_MASK0)) || \ |
| (((bit)>>5)==1 && (1UL<<((bit)&31) & REQUIRED_MASK1)) || \ |
| (((bit)>>5)==2 && (1UL<<((bit)&31) & REQUIRED_MASK2)) || \ |
| (((bit)>>5)==3 && (1UL<<((bit)&31) & REQUIRED_MASK3)) || \ |
| (((bit)>>5)==4 && (1UL<<((bit)&31) & REQUIRED_MASK4)) || \ |
| (((bit)>>5)==5 && (1UL<<((bit)&31) & REQUIRED_MASK5)) || \ |
| (((bit)>>5)==6 && (1UL<<((bit)&31) & REQUIRED_MASK6)) || \ |
| (((bit)>>5)==7 && (1UL<<((bit)&31) & REQUIRED_MASK7)) || \ |
| (((bit)>>5)==8 && (1UL<<((bit)&31) & REQUIRED_MASK8)) || \ |
| (((bit)>>5)==9 && (1UL<<((bit)&31) & REQUIRED_MASK9)) ) |
| |
| #define DISABLED_MASK_BIT_SET(bit) \ |
| ( (((bit)>>5)==0 && (1UL<<((bit)&31) & DISABLED_MASK0)) || \ |
| (((bit)>>5)==1 && (1UL<<((bit)&31) & DISABLED_MASK1)) || \ |
| (((bit)>>5)==2 && (1UL<<((bit)&31) & DISABLED_MASK2)) || \ |
| (((bit)>>5)==3 && (1UL<<((bit)&31) & DISABLED_MASK3)) || \ |
| (((bit)>>5)==4 && (1UL<<((bit)&31) & DISABLED_MASK4)) || \ |
| (((bit)>>5)==5 && (1UL<<((bit)&31) & DISABLED_MASK5)) || \ |
| (((bit)>>5)==6 && (1UL<<((bit)&31) & DISABLED_MASK6)) || \ |
| (((bit)>>5)==7 && (1UL<<((bit)&31) & DISABLED_MASK7)) || \ |
| (((bit)>>5)==8 && (1UL<<((bit)&31) & DISABLED_MASK8)) || \ |
| (((bit)>>5)==9 && (1UL<<((bit)&31) & DISABLED_MASK9)) ) |
| |
| #define cpu_has(c, bit) \ |
| (__builtin_constant_p(bit) && REQUIRED_MASK_BIT_SET(bit) ? 1 : \ |
| test_cpu_cap(c, bit)) |
| |
| #define this_cpu_has(bit) \ |
| (__builtin_constant_p(bit) && REQUIRED_MASK_BIT_SET(bit) ? 1 : \ |
| x86_this_cpu_test_bit(bit, (unsigned long *)&cpu_info.x86_capability)) |
| |
| /* |
| * This macro is for detection of features which need kernel |
| * infrastructure to be used. It may *not* directly test the CPU |
| * itself. Use the cpu_has() family if you want true runtime |
| * testing of CPU features, like in hypervisor code where you are |
| * supporting a possible guest feature where host support for it |
| * is not relevant. |
| */ |
| #define cpu_feature_enabled(bit) \ |
| (__builtin_constant_p(bit) && DISABLED_MASK_BIT_SET(bit) ? 0 : \ |
| cpu_has(&boot_cpu_data, bit)) |
| |
| #define boot_cpu_has(bit) cpu_has(&boot_cpu_data, bit) |
| |
| #define set_cpu_cap(c, bit) set_bit(bit, (unsigned long *)((c)->x86_capability)) |
| #define clear_cpu_cap(c, bit) clear_bit(bit, (unsigned long *)((c)->x86_capability)) |
| #define setup_clear_cpu_cap(bit) do { \ |
| clear_cpu_cap(&boot_cpu_data, bit); \ |
| set_bit(bit, (unsigned long *)cpu_caps_cleared); \ |
| } while (0) |
| #define setup_force_cpu_cap(bit) do { \ |
| set_cpu_cap(&boot_cpu_data, bit); \ |
| set_bit(bit, (unsigned long *)cpu_caps_set); \ |
| } while (0) |
| |
| #define cpu_has_fpu boot_cpu_has(X86_FEATURE_FPU) |
| #define cpu_has_de boot_cpu_has(X86_FEATURE_DE) |
| #define cpu_has_pse boot_cpu_has(X86_FEATURE_PSE) |
| #define cpu_has_tsc boot_cpu_has(X86_FEATURE_TSC) |
| #define cpu_has_pge boot_cpu_has(X86_FEATURE_PGE) |
| #define cpu_has_apic boot_cpu_has(X86_FEATURE_APIC) |
| #define cpu_has_sep boot_cpu_has(X86_FEATURE_SEP) |
| #define cpu_has_mtrr boot_cpu_has(X86_FEATURE_MTRR) |
| #define cpu_has_mmx boot_cpu_has(X86_FEATURE_MMX) |
| #define cpu_has_fxsr boot_cpu_has(X86_FEATURE_FXSR) |
| #define cpu_has_xmm boot_cpu_has(X86_FEATURE_XMM) |
| #define cpu_has_xmm2 boot_cpu_has(X86_FEATURE_XMM2) |
| #define cpu_has_xmm3 boot_cpu_has(X86_FEATURE_XMM3) |
| #define cpu_has_ssse3 boot_cpu_has(X86_FEATURE_SSSE3) |
| #define cpu_has_aes boot_cpu_has(X86_FEATURE_AES) |
| #define cpu_has_avx boot_cpu_has(X86_FEATURE_AVX) |
| #define cpu_has_avx2 boot_cpu_has(X86_FEATURE_AVX2) |
| #define cpu_has_ht boot_cpu_has(X86_FEATURE_HT) |
| #define cpu_has_nx boot_cpu_has(X86_FEATURE_NX) |
| #define cpu_has_xstore boot_cpu_has(X86_FEATURE_XSTORE) |
| #define cpu_has_xstore_enabled boot_cpu_has(X86_FEATURE_XSTORE_EN) |
| #define cpu_has_xcrypt boot_cpu_has(X86_FEATURE_XCRYPT) |
| #define cpu_has_xcrypt_enabled boot_cpu_has(X86_FEATURE_XCRYPT_EN) |
| #define cpu_has_ace2 boot_cpu_has(X86_FEATURE_ACE2) |
| #define cpu_has_ace2_enabled boot_cpu_has(X86_FEATURE_ACE2_EN) |
| #define cpu_has_phe boot_cpu_has(X86_FEATURE_PHE) |
| #define cpu_has_phe_enabled boot_cpu_has(X86_FEATURE_PHE_EN) |
| #define cpu_has_pmm boot_cpu_has(X86_FEATURE_PMM) |
| #define cpu_has_pmm_enabled boot_cpu_has(X86_FEATURE_PMM_EN) |
| #define cpu_has_ds boot_cpu_has(X86_FEATURE_DS) |
| #define cpu_has_pebs boot_cpu_has(X86_FEATURE_PEBS) |
| #define cpu_has_clflush boot_cpu_has(X86_FEATURE_CLFLUSH) |
| #define cpu_has_bts boot_cpu_has(X86_FEATURE_BTS) |
| #define cpu_has_gbpages boot_cpu_has(X86_FEATURE_GBPAGES) |
| #define cpu_has_arch_perfmon boot_cpu_has(X86_FEATURE_ARCH_PERFMON) |
| #define cpu_has_pat boot_cpu_has(X86_FEATURE_PAT) |
| #define cpu_has_xmm4_1 boot_cpu_has(X86_FEATURE_XMM4_1) |
| #define cpu_has_xmm4_2 boot_cpu_has(X86_FEATURE_XMM4_2) |
| #define cpu_has_x2apic boot_cpu_has(X86_FEATURE_X2APIC) |
| #define cpu_has_xsave boot_cpu_has(X86_FEATURE_XSAVE) |
| #define cpu_has_xsaveopt boot_cpu_has(X86_FEATURE_XSAVEOPT) |
| #define cpu_has_xsaves boot_cpu_has(X86_FEATURE_XSAVES) |
| #define cpu_has_osxsave boot_cpu_has(X86_FEATURE_OSXSAVE) |
| #define cpu_has_hypervisor boot_cpu_has(X86_FEATURE_HYPERVISOR) |
| #define cpu_has_pclmulqdq boot_cpu_has(X86_FEATURE_PCLMULQDQ) |
| #define cpu_has_perfctr_core boot_cpu_has(X86_FEATURE_PERFCTR_CORE) |
| #define cpu_has_perfctr_nb boot_cpu_has(X86_FEATURE_PERFCTR_NB) |
| #define cpu_has_perfctr_l2 boot_cpu_has(X86_FEATURE_PERFCTR_L2) |
| #define cpu_has_cx8 boot_cpu_has(X86_FEATURE_CX8) |
| #define cpu_has_cx16 boot_cpu_has(X86_FEATURE_CX16) |
| #define cpu_has_eager_fpu boot_cpu_has(X86_FEATURE_EAGER_FPU) |
| #define cpu_has_topoext boot_cpu_has(X86_FEATURE_TOPOEXT) |
| #define cpu_has_bpext boot_cpu_has(X86_FEATURE_BPEXT) |
| |
| #if __GNUC__ >= 4 |
| extern void warn_pre_alternatives(void); |
| extern bool __static_cpu_has_safe(u16 bit); |
| |
| /* |
| * Static testing of CPU features. Used the same as boot_cpu_has(). |
| * These are only valid after alternatives have run, but will statically |
| * patch the target code for additional performance. |
| */ |
| static __always_inline __pure bool __static_cpu_has(u16 bit) |
| { |
| #ifdef CC_HAVE_ASM_GOTO |
| |
| #ifdef CONFIG_X86_DEBUG_STATIC_CPU_HAS |
| |
| /* |
| * Catch too early usage of this before alternatives |
| * have run. |
| */ |
| asm_volatile_goto("1: jmp %l[t_warn]\n" |
| "2:\n" |
| ".section .altinstructions,\"a\"\n" |
| " .long 1b - .\n" |
| " .long 0\n" /* no replacement */ |
| " .word %P0\n" /* 1: do replace */ |
| " .byte 2b - 1b\n" /* source len */ |
| " .byte 0\n" /* replacement len */ |
| " .byte 0\n" /* pad len */ |
| ".previous\n" |
| /* skipping size check since replacement size = 0 */ |
| : : "i" (X86_FEATURE_ALWAYS) : : t_warn); |
| |
| #endif |
| |
| asm_volatile_goto("1: jmp %l[t_no]\n" |
| "2:\n" |
| ".section .altinstructions,\"a\"\n" |
| " .long 1b - .\n" |
| " .long 0\n" /* no replacement */ |
| " .word %P0\n" /* feature bit */ |
| " .byte 2b - 1b\n" /* source len */ |
| " .byte 0\n" /* replacement len */ |
| " .byte 0\n" /* pad len */ |
| ".previous\n" |
| /* skipping size check since replacement size = 0 */ |
| : : "i" (bit) : : t_no); |
| return true; |
| t_no: |
| return false; |
| |
| #ifdef CONFIG_X86_DEBUG_STATIC_CPU_HAS |
| t_warn: |
| warn_pre_alternatives(); |
| return false; |
| #endif |
| |
| #else /* CC_HAVE_ASM_GOTO */ |
| |
| u8 flag; |
| /* Open-coded due to __stringify() in ALTERNATIVE() */ |
| asm volatile("1: movb $0,%0\n" |
| "2:\n" |
| ".section .altinstructions,\"a\"\n" |
| " .long 1b - .\n" |
| " .long 3f - .\n" |
| " .word %P1\n" /* feature bit */ |
| " .byte 2b - 1b\n" /* source len */ |
| " .byte 4f - 3f\n" /* replacement len */ |
| " .byte 0\n" /* pad len */ |
| ".previous\n" |
| ".section .discard,\"aw\",@progbits\n" |
| " .byte 0xff + (4f-3f) - (2b-1b)\n" /* size check */ |
| ".previous\n" |
| ".section .altinstr_replacement,\"ax\"\n" |
| "3: movb $1,%0\n" |
| "4:\n" |
| ".previous\n" |
| : "=qm" (flag) : "i" (bit)); |
| return flag; |
| |
| #endif /* CC_HAVE_ASM_GOTO */ |
| } |
| |
| #define static_cpu_has(bit) \ |
| ( \ |
| __builtin_constant_p(boot_cpu_has(bit)) ? \ |
| boot_cpu_has(bit) : \ |
| __builtin_constant_p(bit) ? \ |
| __static_cpu_has(bit) : \ |
| boot_cpu_has(bit) \ |
| ) |
| |
| static __always_inline __pure bool _static_cpu_has_safe(u16 bit) |
| { |
| #ifdef CC_HAVE_ASM_GOTO |
| asm_volatile_goto("1: jmp %l[t_dynamic]\n" |
| "2:\n" |
| ".skip -(((5f-4f) - (2b-1b)) > 0) * " |
| "((5f-4f) - (2b-1b)),0x90\n" |
| "3:\n" |
| ".section .altinstructions,\"a\"\n" |
| " .long 1b - .\n" /* src offset */ |
| " .long 4f - .\n" /* repl offset */ |
| " .word %P1\n" /* always replace */ |
| " .byte 3b - 1b\n" /* src len */ |
| " .byte 5f - 4f\n" /* repl len */ |
| " .byte 3b - 2b\n" /* pad len */ |
| ".previous\n" |
| ".section .altinstr_replacement,\"ax\"\n" |
| "4: jmp %l[t_no]\n" |
| "5:\n" |
| ".previous\n" |
| ".section .altinstructions,\"a\"\n" |
| " .long 1b - .\n" /* src offset */ |
| " .long 0\n" /* no replacement */ |
| " .word %P0\n" /* feature bit */ |
| " .byte 3b - 1b\n" /* src len */ |
| " .byte 0\n" /* repl len */ |
| " .byte 0\n" /* pad len */ |
| ".previous\n" |
| : : "i" (bit), "i" (X86_FEATURE_ALWAYS) |
| : : t_dynamic, t_no); |
| return true; |
| t_no: |
| return false; |
| t_dynamic: |
| return __static_cpu_has_safe(bit); |
| #else |
| u8 flag; |
| /* Open-coded due to __stringify() in ALTERNATIVE() */ |
| asm volatile("1: movb $2,%0\n" |
| "2:\n" |
| ".section .altinstructions,\"a\"\n" |
| " .long 1b - .\n" /* src offset */ |
| " .long 3f - .\n" /* repl offset */ |
| " .word %P2\n" /* always replace */ |
| " .byte 2b - 1b\n" /* source len */ |
| " .byte 4f - 3f\n" /* replacement len */ |
| " .byte 0\n" /* pad len */ |
| ".previous\n" |
| ".section .discard,\"aw\",@progbits\n" |
| " .byte 0xff + (4f-3f) - (2b-1b)\n" /* size check */ |
| ".previous\n" |
| ".section .altinstr_replacement,\"ax\"\n" |
| "3: movb $0,%0\n" |
| "4:\n" |
| ".previous\n" |
| ".section .altinstructions,\"a\"\n" |
| " .long 1b - .\n" /* src offset */ |
| " .long 5f - .\n" /* repl offset */ |
| " .word %P1\n" /* feature bit */ |
| " .byte 4b - 3b\n" /* src len */ |
| " .byte 6f - 5f\n" /* repl len */ |
| " .byte 0\n" /* pad len */ |
| ".previous\n" |
| ".section .discard,\"aw\",@progbits\n" |
| " .byte 0xff + (6f-5f) - (4b-3b)\n" /* size check */ |
| ".previous\n" |
| ".section .altinstr_replacement,\"ax\"\n" |
| "5: movb $1,%0\n" |
| "6:\n" |
| ".previous\n" |
| : "=qm" (flag) |
| : "i" (bit), "i" (X86_FEATURE_ALWAYS)); |
| return (flag == 2 ? __static_cpu_has_safe(bit) : flag); |
| #endif /* CC_HAVE_ASM_GOTO */ |
| } |
| |
| #define static_cpu_has_safe(bit) \ |
| ( \ |
| __builtin_constant_p(boot_cpu_has(bit)) ? \ |
| boot_cpu_has(bit) : \ |
| _static_cpu_has_safe(bit) \ |
| ) |
| #else |
| /* |
| * gcc 3.x is too stupid to do the static test; fall back to dynamic. |
| */ |
| #define static_cpu_has(bit) boot_cpu_has(bit) |
| #define static_cpu_has_safe(bit) boot_cpu_has(bit) |
| #endif |
| |
| #define cpu_has_bug(c, bit) cpu_has(c, (bit)) |
| #define set_cpu_bug(c, bit) set_cpu_cap(c, (bit)) |
| #define clear_cpu_bug(c, bit) clear_cpu_cap(c, (bit)) |
| |
| #define static_cpu_has_bug(bit) static_cpu_has((bit)) |
| #define static_cpu_has_bug_safe(bit) static_cpu_has_safe((bit)) |
| #define boot_cpu_has_bug(bit) cpu_has_bug(&boot_cpu_data, (bit)) |
| |
| #define MAX_CPU_FEATURES (NCAPINTS * 32) |
| #define cpu_have_feature boot_cpu_has |
| |
| #define CPU_FEATURE_TYPEFMT "x86,ven%04Xfam%04Xmod%04X" |
| #define CPU_FEATURE_TYPEVAL boot_cpu_data.x86_vendor, boot_cpu_data.x86, \ |
| boot_cpu_data.x86_model |
| |
| #endif /* defined(__KERNEL__) && !defined(__ASSEMBLY__) */ |
| #endif /* _ASM_X86_CPUFEATURE_H */ |
