Commit | Line | Data |
---|---|---|
7b11fb51 PA |
1 | /* |
2 | * Defines x86 CPU feature bits | |
3 | */ | |
1965aae3 PA |
4 | #ifndef _ASM_X86_CPUFEATURE_H |
5 | #define _ASM_X86_CPUFEATURE_H | |
7b11fb51 | 6 | |
abbf1590 | 7 | #ifndef _ASM_X86_REQUIRED_FEATURES_H |
7b11fb51 | 8 | #include <asm/required-features.h> |
abbf1590 | 9 | #endif |
7b11fb51 | 10 | |
6229ad27 | 11 | #define NCAPINTS 11 /* N 32-bit words worth of info */ |
65fc985b | 12 | #define NBUGINTS 1 /* N 32-bit bug flags */ |
7b11fb51 | 13 | |
7414aa41 PA |
14 | /* |
15 | * Note: If the comment begins with a quoted string, that string is used | |
16 | * in /proc/cpuinfo instead of the macro name. If the string is "", | |
17 | * this feature bit is not displayed in /proc/cpuinfo at all. | |
18 | */ | |
7b11fb51 PA |
19 | |
20 | /* Intel-defined CPU features, CPUID level 0x00000001 (edx), word 0 */ | |
446fd806 FY |
21 | #define X86_FEATURE_FPU ( 0*32+ 0) /* Onboard FPU */ |
22 | #define X86_FEATURE_VME ( 0*32+ 1) /* Virtual Mode Extensions */ | |
23 | #define X86_FEATURE_DE ( 0*32+ 2) /* Debugging Extensions */ | |
24 | #define X86_FEATURE_PSE ( 0*32+ 3) /* Page Size Extensions */ | |
25 | #define X86_FEATURE_TSC ( 0*32+ 4) /* Time Stamp Counter */ | |
26 | #define X86_FEATURE_MSR ( 0*32+ 5) /* Model-Specific Registers */ | |
27 | #define X86_FEATURE_PAE ( 0*32+ 6) /* Physical Address Extensions */ | |
28 | #define X86_FEATURE_MCE ( 0*32+ 7) /* Machine Check Exception */ | |
29 | #define X86_FEATURE_CX8 ( 0*32+ 8) /* CMPXCHG8 instruction */ | |
30 | #define X86_FEATURE_APIC ( 0*32+ 9) /* Onboard APIC */ | |
31 | #define X86_FEATURE_SEP ( 0*32+11) /* SYSENTER/SYSEXIT */ | |
32 | #define X86_FEATURE_MTRR ( 0*32+12) /* Memory Type Range Registers */ | |
33 | #define X86_FEATURE_PGE ( 0*32+13) /* Page Global Enable */ | |
34 | #define X86_FEATURE_MCA ( 0*32+14) /* Machine Check Architecture */ | |
35 | #define X86_FEATURE_CMOV ( 0*32+15) /* CMOV instructions */ | |
2798c63e | 36 | /* (plus FCMOVcc, FCOMI with FPU) */ |
446fd806 FY |
37 | #define X86_FEATURE_PAT ( 0*32+16) /* Page Attribute Table */ |
38 | #define X86_FEATURE_PSE36 ( 0*32+17) /* 36-bit PSEs */ | |
39 | #define X86_FEATURE_PN ( 0*32+18) /* Processor serial number */ | |
40 | #define X86_FEATURE_CLFLUSH ( 0*32+19) /* CLFLUSH instruction */ | |
41 | #define X86_FEATURE_DS ( 0*32+21) /* "dts" Debug Store */ | |
42 | #define X86_FEATURE_ACPI ( 0*32+22) /* ACPI via MSR */ | |
43 | #define X86_FEATURE_MMX ( 0*32+23) /* Multimedia Extensions */ | |
44 | #define X86_FEATURE_FXSR ( 0*32+24) /* FXSAVE/FXRSTOR, CR4.OSFXSR */ | |
45 | #define X86_FEATURE_XMM ( 0*32+25) /* "sse" */ | |
46 | #define X86_FEATURE_XMM2 ( 0*32+26) /* "sse2" */ | |
47 | #define X86_FEATURE_SELFSNOOP ( 0*32+27) /* "ss" CPU self snoop */ | |
48 | #define X86_FEATURE_HT ( 0*32+28) /* Hyper-Threading */ | |
49 | #define X86_FEATURE_ACC ( 0*32+29) /* "tm" Automatic clock control */ | |
50 | #define X86_FEATURE_IA64 ( 0*32+30) /* IA-64 processor */ | |
51 | #define X86_FEATURE_PBE ( 0*32+31) /* Pending Break Enable */ | |
7b11fb51 PA |
52 | |
53 | /* AMD-defined CPU features, CPUID level 0x80000001, word 1 */ | |
54 | /* Don't duplicate feature flags which are redundant with Intel! */ | |
446fd806 FY |
55 | #define X86_FEATURE_SYSCALL ( 1*32+11) /* SYSCALL/SYSRET */ |
56 | #define X86_FEATURE_MP ( 1*32+19) /* MP Capable. */ | |
57 | #define X86_FEATURE_NX ( 1*32+20) /* Execute Disable */ | |
58 | #define X86_FEATURE_MMXEXT ( 1*32+22) /* AMD MMX extensions */ | |
59 | #define X86_FEATURE_FXSR_OPT ( 1*32+25) /* FXSAVE/FXRSTOR optimizations */ | |
60 | #define X86_FEATURE_GBPAGES ( 1*32+26) /* "pdpe1gb" GB pages */ | |
61 | #define X86_FEATURE_RDTSCP ( 1*32+27) /* RDTSCP */ | |
62 | #define X86_FEATURE_LM ( 1*32+29) /* Long Mode (x86-64) */ | |
63 | #define X86_FEATURE_3DNOWEXT ( 1*32+30) /* AMD 3DNow! extensions */ | |
64 | #define X86_FEATURE_3DNOW ( 1*32+31) /* 3DNow! */ | |
7b11fb51 PA |
65 | |
66 | /* Transmeta-defined CPU features, CPUID level 0x80860001, word 2 */ | |
446fd806 FY |
67 | #define X86_FEATURE_RECOVERY ( 2*32+ 0) /* CPU in recovery mode */ |
68 | #define X86_FEATURE_LONGRUN ( 2*32+ 1) /* Longrun power control */ | |
69 | #define X86_FEATURE_LRTI ( 2*32+ 3) /* LongRun table interface */ | |
7b11fb51 PA |
70 | |
71 | /* Other features, Linux-defined mapping, word 3 */ | |
72 | /* This range is used for feature bits which conflict or are synthesized */ | |
446fd806 FY |
73 | #define X86_FEATURE_CXMMX ( 3*32+ 0) /* Cyrix MMX extensions */ |
74 | #define X86_FEATURE_K6_MTRR ( 3*32+ 1) /* AMD K6 nonstandard MTRRs */ | |
75 | #define X86_FEATURE_CYRIX_ARR ( 3*32+ 2) /* Cyrix ARRs (= MTRRs) */ | |
76 | #define X86_FEATURE_CENTAUR_MCR ( 3*32+ 3) /* Centaur MCRs (= MTRRs) */ | |
7b11fb51 | 77 | /* cpu types for specific tunings: */ |
446fd806 FY |
78 | #define X86_FEATURE_K8 ( 3*32+ 4) /* "" Opteron, Athlon64 */ |
79 | #define X86_FEATURE_K7 ( 3*32+ 5) /* "" Athlon */ | |
80 | #define X86_FEATURE_P3 ( 3*32+ 6) /* "" P3 */ | |
81 | #define X86_FEATURE_P4 ( 3*32+ 7) /* "" P4 */ | |
82 | #define X86_FEATURE_CONSTANT_TSC ( 3*32+ 8) /* TSC ticks at a constant rate */ | |
83 | #define X86_FEATURE_UP ( 3*32+ 9) /* smp kernel running on up */ | |
9b13a93d | 84 | /* free, was #define X86_FEATURE_FXSAVE_LEAK ( 3*32+10) * "" FXSAVE leaks FOP/FIP/FOP */ |
446fd806 FY |
85 | #define X86_FEATURE_ARCH_PERFMON ( 3*32+11) /* Intel Architectural PerfMon */ |
86 | #define X86_FEATURE_PEBS ( 3*32+12) /* Precise-Event Based Sampling */ | |
87 | #define X86_FEATURE_BTS ( 3*32+13) /* Branch Trace Store */ | |
88 | #define X86_FEATURE_SYSCALL32 ( 3*32+14) /* "" syscall in ia32 userspace */ | |
89 | #define X86_FEATURE_SYSENTER32 ( 3*32+15) /* "" sysenter in ia32 userspace */ | |
90 | #define X86_FEATURE_REP_GOOD ( 3*32+16) /* rep microcode works well */ | |
91 | #define X86_FEATURE_MFENCE_RDTSC ( 3*32+17) /* "" Mfence synchronizes RDTSC */ | |
92 | #define X86_FEATURE_LFENCE_RDTSC ( 3*32+18) /* "" Lfence synchronizes RDTSC */ | |
9b13a93d | 93 | /* free, was #define X86_FEATURE_11AP ( 3*32+19) * "" Bad local APIC aka 11AP */ |
446fd806 FY |
94 | #define X86_FEATURE_NOPL ( 3*32+20) /* The NOPL (0F 1F) instructions */ |
95 | #define X86_FEATURE_ALWAYS ( 3*32+21) /* "" Always-present feature */ | |
96 | #define X86_FEATURE_XTOPOLOGY ( 3*32+22) /* cpu topology enum extensions */ | |
97 | #define X86_FEATURE_TSC_RELIABLE ( 3*32+23) /* TSC is known to be reliable */ | |
98 | #define X86_FEATURE_NONSTOP_TSC ( 3*32+24) /* TSC does not stop in C states */ | |
9b13a93d | 99 | /* free, was #define X86_FEATURE_CLFLUSH_MONITOR ( 3*32+25) * "" clflush reqd with monitor */ |
446fd806 FY |
100 | #define X86_FEATURE_EXTD_APICID ( 3*32+26) /* has extended APICID (8 bits) */ |
101 | #define X86_FEATURE_AMD_DCM ( 3*32+27) /* multi-node processor */ | |
102 | #define X86_FEATURE_APERFMPERF ( 3*32+28) /* APERFMPERF */ | |
103 | #define X86_FEATURE_EAGER_FPU ( 3*32+29) /* "eagerfpu" Non lazy FPU restore */ | |
104 | #define X86_FEATURE_NONSTOP_TSC_S3 ( 3*32+30) /* TSC doesn't stop in S3 state */ | |
7b11fb51 PA |
105 | |
106 | /* Intel-defined CPU features, CPUID level 0x00000001 (ecx), word 4 */ | |
446fd806 FY |
107 | #define X86_FEATURE_XMM3 ( 4*32+ 0) /* "pni" SSE-3 */ |
108 | #define X86_FEATURE_PCLMULQDQ ( 4*32+ 1) /* PCLMULQDQ instruction */ | |
109 | #define X86_FEATURE_DTES64 ( 4*32+ 2) /* 64-bit Debug Store */ | |
110 | #define X86_FEATURE_MWAIT ( 4*32+ 3) /* "monitor" Monitor/Mwait support */ | |
111 | #define X86_FEATURE_DSCPL ( 4*32+ 4) /* "ds_cpl" CPL Qual. Debug Store */ | |
112 | #define X86_FEATURE_VMX ( 4*32+ 5) /* Hardware virtualization */ | |
113 | #define X86_FEATURE_SMX ( 4*32+ 6) /* Safer mode */ | |
114 | #define X86_FEATURE_EST ( 4*32+ 7) /* Enhanced SpeedStep */ | |
115 | #define X86_FEATURE_TM2 ( 4*32+ 8) /* Thermal Monitor 2 */ | |
116 | #define X86_FEATURE_SSSE3 ( 4*32+ 9) /* Supplemental SSE-3 */ | |
117 | #define X86_FEATURE_CID ( 4*32+10) /* Context ID */ | |
118 | #define X86_FEATURE_FMA ( 4*32+12) /* Fused multiply-add */ | |
119 | #define X86_FEATURE_CX16 ( 4*32+13) /* CMPXCHG16B */ | |
120 | #define X86_FEATURE_XTPR ( 4*32+14) /* Send Task Priority Messages */ | |
121 | #define X86_FEATURE_PDCM ( 4*32+15) /* Performance Capabilities */ | |
122 | #define X86_FEATURE_PCID ( 4*32+17) /* Process Context Identifiers */ | |
123 | #define X86_FEATURE_DCA ( 4*32+18) /* Direct Cache Access */ | |
124 | #define X86_FEATURE_XMM4_1 ( 4*32+19) /* "sse4_1" SSE-4.1 */ | |
125 | #define X86_FEATURE_XMM4_2 ( 4*32+20) /* "sse4_2" SSE-4.2 */ | |
126 | #define X86_FEATURE_X2APIC ( 4*32+21) /* x2APIC */ | |
127 | #define X86_FEATURE_MOVBE ( 4*32+22) /* MOVBE instruction */ | |
128 | #define X86_FEATURE_POPCNT ( 4*32+23) /* POPCNT instruction */ | |
129 | #define X86_FEATURE_TSC_DEADLINE_TIMER ( 4*32+24) /* Tsc deadline timer */ | |
130 | #define X86_FEATURE_AES ( 4*32+25) /* AES instructions */ | |
131 | #define X86_FEATURE_XSAVE ( 4*32+26) /* XSAVE/XRSTOR/XSETBV/XGETBV */ | |
132 | #define X86_FEATURE_OSXSAVE ( 4*32+27) /* "" XSAVE enabled in the OS */ | |
133 | #define X86_FEATURE_AVX ( 4*32+28) /* Advanced Vector Extensions */ | |
134 | #define X86_FEATURE_F16C ( 4*32+29) /* 16-bit fp conversions */ | |
135 | #define X86_FEATURE_RDRAND ( 4*32+30) /* The RDRAND instruction */ | |
136 | #define X86_FEATURE_HYPERVISOR ( 4*32+31) /* Running on a hypervisor */ | |
7b11fb51 PA |
137 | |
138 | /* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001, word 5 */ | |
446fd806 FY |
139 | #define X86_FEATURE_XSTORE ( 5*32+ 2) /* "rng" RNG present (xstore) */ |
140 | #define X86_FEATURE_XSTORE_EN ( 5*32+ 3) /* "rng_en" RNG enabled */ | |
141 | #define X86_FEATURE_XCRYPT ( 5*32+ 6) /* "ace" on-CPU crypto (xcrypt) */ | |
142 | #define X86_FEATURE_XCRYPT_EN ( 5*32+ 7) /* "ace_en" on-CPU crypto enabled */ | |
143 | #define X86_FEATURE_ACE2 ( 5*32+ 8) /* Advanced Cryptography Engine v2 */ | |
144 | #define X86_FEATURE_ACE2_EN ( 5*32+ 9) /* ACE v2 enabled */ | |
145 | #define X86_FEATURE_PHE ( 5*32+10) /* PadLock Hash Engine */ | |
146 | #define X86_FEATURE_PHE_EN ( 5*32+11) /* PHE enabled */ | |
147 | #define X86_FEATURE_PMM ( 5*32+12) /* PadLock Montgomery Multiplier */ | |
148 | #define X86_FEATURE_PMM_EN ( 5*32+13) /* PMM enabled */ | |
7b11fb51 PA |
149 | |
150 | /* More extended AMD flags: CPUID level 0x80000001, ecx, word 6 */ | |
446fd806 FY |
151 | #define X86_FEATURE_LAHF_LM ( 6*32+ 0) /* LAHF/SAHF in long mode */ |
152 | #define X86_FEATURE_CMP_LEGACY ( 6*32+ 1) /* If yes HyperThreading not valid */ | |
153 | #define X86_FEATURE_SVM ( 6*32+ 2) /* Secure virtual machine */ | |
154 | #define X86_FEATURE_EXTAPIC ( 6*32+ 3) /* Extended APIC space */ | |
155 | #define X86_FEATURE_CR8_LEGACY ( 6*32+ 4) /* CR8 in 32-bit mode */ | |
156 | #define X86_FEATURE_ABM ( 6*32+ 5) /* Advanced bit manipulation */ | |
157 | #define X86_FEATURE_SSE4A ( 6*32+ 6) /* SSE-4A */ | |
158 | #define X86_FEATURE_MISALIGNSSE ( 6*32+ 7) /* Misaligned SSE mode */ | |
159 | #define X86_FEATURE_3DNOWPREFETCH ( 6*32+ 8) /* 3DNow prefetch instructions */ | |
160 | #define X86_FEATURE_OSVW ( 6*32+ 9) /* OS Visible Workaround */ | |
161 | #define X86_FEATURE_IBS ( 6*32+10) /* Instruction Based Sampling */ | |
162 | #define X86_FEATURE_XOP ( 6*32+11) /* extended AVX instructions */ | |
163 | #define X86_FEATURE_SKINIT ( 6*32+12) /* SKINIT/STGI instructions */ | |
164 | #define X86_FEATURE_WDT ( 6*32+13) /* Watchdog timer */ | |
165 | #define X86_FEATURE_LWP ( 6*32+15) /* Light Weight Profiling */ | |
166 | #define X86_FEATURE_FMA4 ( 6*32+16) /* 4 operands MAC instructions */ | |
167 | #define X86_FEATURE_TCE ( 6*32+17) /* translation cache extension */ | |
168 | #define X86_FEATURE_NODEID_MSR ( 6*32+19) /* NodeId MSR */ | |
169 | #define X86_FEATURE_TBM ( 6*32+21) /* trailing bit manipulations */ | |
170 | #define X86_FEATURE_TOPOEXT ( 6*32+22) /* topology extensions CPUID leafs */ | |
171 | #define X86_FEATURE_PERFCTR_CORE ( 6*32+23) /* core performance counter extensions */ | |
172 | #define X86_FEATURE_PERFCTR_NB ( 6*32+24) /* NB performance counter extensions */ | |
173 | #define X86_FEATURE_PERFCTR_L2 ( 6*32+28) /* L2 performance counter extensions */ | |
7b11fb51 PA |
174 | |
175 | /* | |
176 | * Auxiliary flags: Linux defined - For features scattered in various | |
bdc802dc | 177 | * CPUID levels like 0x6, 0xA etc, word 7 |
7b11fb51 | 178 | */ |
446fd806 FY |
179 | #define X86_FEATURE_IDA ( 7*32+ 0) /* Intel Dynamic Acceleration */ |
180 | #define X86_FEATURE_ARAT ( 7*32+ 1) /* Always Running APIC Timer */ | |
181 | #define X86_FEATURE_CPB ( 7*32+ 2) /* AMD Core Performance Boost */ | |
182 | #define X86_FEATURE_EPB ( 7*32+ 3) /* IA32_ENERGY_PERF_BIAS support */ | |
446fd806 FY |
183 | #define X86_FEATURE_PLN ( 7*32+ 5) /* Intel Power Limit Notification */ |
184 | #define X86_FEATURE_PTS ( 7*32+ 6) /* Intel Package Thermal Status */ | |
185 | #define X86_FEATURE_DTHERM ( 7*32+ 7) /* Digital Thermal Sensor */ | |
186 | #define X86_FEATURE_HW_PSTATE ( 7*32+ 8) /* AMD HW-PState */ | |
187 | #define X86_FEATURE_PROC_FEEDBACK ( 7*32+ 9) /* AMD ProcFeedbackInterface */ | |
7b11fb51 | 188 | |
bdc802dc | 189 | /* Virtualization flags: Linux defined, word 8 */ |
446fd806 FY |
190 | #define X86_FEATURE_TPR_SHADOW ( 8*32+ 0) /* Intel TPR Shadow */ |
191 | #define X86_FEATURE_VNMI ( 8*32+ 1) /* Intel Virtual NMI */ | |
192 | #define X86_FEATURE_FLEXPRIORITY ( 8*32+ 2) /* Intel FlexPriority */ | |
193 | #define X86_FEATURE_EPT ( 8*32+ 3) /* Intel Extended Page Table */ | |
194 | #define X86_FEATURE_VPID ( 8*32+ 4) /* Intel Virtual Processor ID */ | |
195 | #define X86_FEATURE_NPT ( 8*32+ 5) /* AMD Nested Page Table support */ | |
196 | #define X86_FEATURE_LBRV ( 8*32+ 6) /* AMD LBR Virtualization support */ | |
197 | #define X86_FEATURE_SVML ( 8*32+ 7) /* "svm_lock" AMD SVM locking MSR */ | |
198 | #define X86_FEATURE_NRIPS ( 8*32+ 8) /* "nrip_save" AMD SVM next_rip save */ | |
199 | #define X86_FEATURE_TSCRATEMSR ( 8*32+ 9) /* "tsc_scale" AMD TSC scaling support */ | |
200 | #define X86_FEATURE_VMCBCLEAN ( 8*32+10) /* "vmcb_clean" AMD VMCB clean bits support */ | |
201 | #define X86_FEATURE_FLUSHBYASID ( 8*32+11) /* AMD flush-by-ASID support */ | |
202 | #define X86_FEATURE_DECODEASSISTS ( 8*32+12) /* AMD Decode Assists support */ | |
203 | #define X86_FEATURE_PAUSEFILTER ( 8*32+13) /* AMD filtered pause intercept */ | |
204 | #define X86_FEATURE_PFTHRESHOLD ( 8*32+14) /* AMD pause filter threshold */ | |
aeb9c7d6 | 205 | |
e38e05a8 | 206 | |
bdc802dc | 207 | /* Intel-defined CPU features, CPUID level 0x00000007:0 (ebx), word 9 */ |
446fd806 FY |
208 | #define X86_FEATURE_FSGSBASE ( 9*32+ 0) /* {RD/WR}{FS/GS}BASE instructions*/ |
209 | #define X86_FEATURE_TSC_ADJUST ( 9*32+ 1) /* TSC adjustment MSR 0x3b */ | |
210 | #define X86_FEATURE_BMI1 ( 9*32+ 3) /* 1st group bit manipulation extensions */ | |
211 | #define X86_FEATURE_HLE ( 9*32+ 4) /* Hardware Lock Elision */ | |
212 | #define X86_FEATURE_AVX2 ( 9*32+ 5) /* AVX2 instructions */ | |
213 | #define X86_FEATURE_SMEP ( 9*32+ 7) /* Supervisor Mode Execution Protection */ | |
214 | #define X86_FEATURE_BMI2 ( 9*32+ 8) /* 2nd group bit manipulation extensions */ | |
215 | #define X86_FEATURE_ERMS ( 9*32+ 9) /* Enhanced REP MOVSB/STOSB */ | |
216 | #define X86_FEATURE_INVPCID ( 9*32+10) /* Invalidate Processor Context ID */ | |
217 | #define X86_FEATURE_RTM ( 9*32+11) /* Restricted Transactional Memory */ | |
218 | #define X86_FEATURE_MPX ( 9*32+14) /* Memory Protection Extension */ | |
219 | #define X86_FEATURE_AVX512F ( 9*32+16) /* AVX-512 Foundation */ | |
220 | #define X86_FEATURE_RDSEED ( 9*32+18) /* The RDSEED instruction */ | |
221 | #define X86_FEATURE_ADX ( 9*32+19) /* The ADCX and ADOX instructions */ | |
222 | #define X86_FEATURE_SMAP ( 9*32+20) /* Supervisor Mode Access Prevention */ | |
223 | #define X86_FEATURE_CLFLUSHOPT ( 9*32+23) /* CLFLUSHOPT instruction */ | |
224 | #define X86_FEATURE_AVX512PF ( 9*32+26) /* AVX-512 Prefetch */ | |
225 | #define X86_FEATURE_AVX512ER ( 9*32+27) /* AVX-512 Exponential and Reciprocal */ | |
226 | #define X86_FEATURE_AVX512CD ( 9*32+28) /* AVX-512 Conflict Detection */ | |
bdc802dc | 227 | |
6229ad27 FY |
228 | /* Extended state features, CPUID level 0x0000000d:1 (eax), word 10 */ |
229 | #define X86_FEATURE_XSAVEOPT (10*32+ 0) /* XSAVEOPT */ | |
230 | #define X86_FEATURE_XSAVEC (10*32+ 1) /* XSAVEC */ | |
231 | #define X86_FEATURE_XGETBV1 (10*32+ 2) /* XGETBV with ECX = 1 */ | |
232 | #define X86_FEATURE_XSAVES (10*32+ 3) /* XSAVES/XRSTORS */ | |
233 | ||
65fc985b BP |
234 | /* |
235 | * BUG word(s) | |
236 | */ | |
237 | #define X86_BUG(x) (NCAPINTS*32 + (x)) | |
238 | ||
e2604b49 | 239 | #define X86_BUG_F00F X86_BUG(0) /* Intel F00F */ |
93a829e8 | 240 | #define X86_BUG_FDIV X86_BUG(1) /* FPU FDIV */ |
c5b41a67 | 241 | #define X86_BUG_COMA X86_BUG(2) /* Cyrix 6x86 coma */ |
80a208bd BP |
242 | #define X86_BUG_AMD_TLB_MMATCH X86_BUG(3) /* "tlb_mmatch" AMD Erratum 383 */ |
243 | #define X86_BUG_AMD_APIC_C1E X86_BUG(4) /* "apic_c1e" AMD Erratum 400 */ | |
9b13a93d BP |
244 | #define X86_BUG_11AP X86_BUG(5) /* Bad local APIC aka 11AP */ |
245 | #define X86_BUG_FXSAVE_LEAK X86_BUG(6) /* FXSAVE leaks FOP/FIP/FOP */ | |
246 | #define X86_BUG_CLFLUSH_MONITOR X86_BUG(7) /* AAI65, CLFLUSH required before MONITOR */ | |
e2604b49 | 247 | |
fa1408e4 PA |
248 | #if defined(__KERNEL__) && !defined(__ASSEMBLY__) |
249 | ||
a3c8acd0 | 250 | #include <asm/asm.h> |
fa1408e4 PA |
251 | #include <linux/bitops.h> |
252 | ||
253 | extern const char * const x86_cap_flags[NCAPINTS*32]; | |
254 | extern const char * const x86_power_flags[32]; | |
255 | ||
80a208bd BP |
256 | /* |
257 | * In order to save room, we index into this array by doing | |
258 | * X86_BUG_<name> - NCAPINTS*32. | |
259 | */ | |
260 | extern const char * const x86_bug_flags[NBUGINTS*32]; | |
261 | ||
0f8d2b92 IM |
262 | #define test_cpu_cap(c, bit) \ |
263 | test_bit(bit, (unsigned long *)((c)->x86_capability)) | |
264 | ||
349c004e | 265 | #define REQUIRED_MASK_BIT_SET(bit) \ |
7b11fb51 PA |
266 | ( (((bit)>>5)==0 && (1UL<<((bit)&31) & REQUIRED_MASK0)) || \ |
267 | (((bit)>>5)==1 && (1UL<<((bit)&31) & REQUIRED_MASK1)) || \ | |
268 | (((bit)>>5)==2 && (1UL<<((bit)&31) & REQUIRED_MASK2)) || \ | |
269 | (((bit)>>5)==3 && (1UL<<((bit)&31) & REQUIRED_MASK3)) || \ | |
270 | (((bit)>>5)==4 && (1UL<<((bit)&31) & REQUIRED_MASK4)) || \ | |
271 | (((bit)>>5)==5 && (1UL<<((bit)&31) & REQUIRED_MASK5)) || \ | |
272 | (((bit)>>5)==6 && (1UL<<((bit)&31) & REQUIRED_MASK6)) || \ | |
bdc802dc PA |
273 | (((bit)>>5)==7 && (1UL<<((bit)&31) & REQUIRED_MASK7)) || \ |
274 | (((bit)>>5)==8 && (1UL<<((bit)&31) & REQUIRED_MASK8)) || \ | |
349c004e CL |
275 | (((bit)>>5)==9 && (1UL<<((bit)&31) & REQUIRED_MASK9)) ) |
276 | ||
277 | #define cpu_has(c, bit) \ | |
278 | (__builtin_constant_p(bit) && REQUIRED_MASK_BIT_SET(bit) ? 1 : \ | |
0f8d2b92 IM |
279 | test_cpu_cap(c, bit)) |
280 | ||
349c004e CL |
281 | #define this_cpu_has(bit) \ |
282 | (__builtin_constant_p(bit) && REQUIRED_MASK_BIT_SET(bit) ? 1 : \ | |
283 | x86_this_cpu_test_bit(bit, (unsigned long *)&cpu_info.x86_capability)) | |
284 | ||
7b11fb51 PA |
285 | #define boot_cpu_has(bit) cpu_has(&boot_cpu_data, bit) |
286 | ||
53756d37 JF |
287 | #define set_cpu_cap(c, bit) set_bit(bit, (unsigned long *)((c)->x86_capability)) |
288 | #define clear_cpu_cap(c, bit) clear_bit(bit, (unsigned long *)((c)->x86_capability)) | |
7d851c8d AK |
289 | #define setup_clear_cpu_cap(bit) do { \ |
290 | clear_cpu_cap(&boot_cpu_data, bit); \ | |
3e0c3737 | 291 | set_bit(bit, (unsigned long *)cpu_caps_cleared); \ |
7d851c8d | 292 | } while (0) |
404ee5b1 AK |
293 | #define setup_force_cpu_cap(bit) do { \ |
294 | set_cpu_cap(&boot_cpu_data, bit); \ | |
3e0c3737 | 295 | set_bit(bit, (unsigned long *)cpu_caps_set); \ |
404ee5b1 | 296 | } while (0) |
53756d37 | 297 | |
7b11fb51 PA |
298 | #define cpu_has_fpu boot_cpu_has(X86_FEATURE_FPU) |
299 | #define cpu_has_vme boot_cpu_has(X86_FEATURE_VME) | |
300 | #define cpu_has_de boot_cpu_has(X86_FEATURE_DE) | |
301 | #define cpu_has_pse boot_cpu_has(X86_FEATURE_PSE) | |
302 | #define cpu_has_tsc boot_cpu_has(X86_FEATURE_TSC) | |
7b11fb51 PA |
303 | #define cpu_has_pge boot_cpu_has(X86_FEATURE_PGE) |
304 | #define cpu_has_apic boot_cpu_has(X86_FEATURE_APIC) | |
305 | #define cpu_has_sep boot_cpu_has(X86_FEATURE_SEP) | |
306 | #define cpu_has_mtrr boot_cpu_has(X86_FEATURE_MTRR) | |
307 | #define cpu_has_mmx boot_cpu_has(X86_FEATURE_MMX) | |
308 | #define cpu_has_fxsr boot_cpu_has(X86_FEATURE_FXSR) | |
309 | #define cpu_has_xmm boot_cpu_has(X86_FEATURE_XMM) | |
310 | #define cpu_has_xmm2 boot_cpu_has(X86_FEATURE_XMM2) | |
311 | #define cpu_has_xmm3 boot_cpu_has(X86_FEATURE_XMM3) | |
66be8951 | 312 | #define cpu_has_ssse3 boot_cpu_has(X86_FEATURE_SSSE3) |
54b6a1bd | 313 | #define cpu_has_aes boot_cpu_has(X86_FEATURE_AES) |
66be8951 | 314 | #define cpu_has_avx boot_cpu_has(X86_FEATURE_AVX) |
60488010 | 315 | #define cpu_has_avx2 boot_cpu_has(X86_FEATURE_AVX2) |
7b11fb51 | 316 | #define cpu_has_ht boot_cpu_has(X86_FEATURE_HT) |
7b11fb51 PA |
317 | #define cpu_has_nx boot_cpu_has(X86_FEATURE_NX) |
318 | #define cpu_has_k6_mtrr boot_cpu_has(X86_FEATURE_K6_MTRR) | |
319 | #define cpu_has_cyrix_arr boot_cpu_has(X86_FEATURE_CYRIX_ARR) | |
320 | #define cpu_has_centaur_mcr boot_cpu_has(X86_FEATURE_CENTAUR_MCR) | |
321 | #define cpu_has_xstore boot_cpu_has(X86_FEATURE_XSTORE) | |
322 | #define cpu_has_xstore_enabled boot_cpu_has(X86_FEATURE_XSTORE_EN) | |
323 | #define cpu_has_xcrypt boot_cpu_has(X86_FEATURE_XCRYPT) | |
324 | #define cpu_has_xcrypt_enabled boot_cpu_has(X86_FEATURE_XCRYPT_EN) | |
325 | #define cpu_has_ace2 boot_cpu_has(X86_FEATURE_ACE2) | |
326 | #define cpu_has_ace2_enabled boot_cpu_has(X86_FEATURE_ACE2_EN) | |
327 | #define cpu_has_phe boot_cpu_has(X86_FEATURE_PHE) | |
328 | #define cpu_has_phe_enabled boot_cpu_has(X86_FEATURE_PHE_EN) | |
329 | #define cpu_has_pmm boot_cpu_has(X86_FEATURE_PMM) | |
330 | #define cpu_has_pmm_enabled boot_cpu_has(X86_FEATURE_PMM_EN) | |
331 | #define cpu_has_ds boot_cpu_has(X86_FEATURE_DS) | |
332 | #define cpu_has_pebs boot_cpu_has(X86_FEATURE_PEBS) | |
840d2830 | 333 | #define cpu_has_clflush boot_cpu_has(X86_FEATURE_CLFLUSH) |
7b11fb51 | 334 | #define cpu_has_bts boot_cpu_has(X86_FEATURE_BTS) |
019c3e7c | 335 | #define cpu_has_gbpages boot_cpu_has(X86_FEATURE_GBPAGES) |
86975101 | 336 | #define cpu_has_arch_perfmon boot_cpu_has(X86_FEATURE_ARCH_PERFMON) |
2e5d9c85 | 337 | #define cpu_has_pat boot_cpu_has(X86_FEATURE_PAT) |
f1240c00 | 338 | #define cpu_has_xmm4_1 boot_cpu_has(X86_FEATURE_XMM4_1) |
2a61812a | 339 | #define cpu_has_xmm4_2 boot_cpu_has(X86_FEATURE_XMM4_2) |
32e1d0a0 | 340 | #define cpu_has_x2apic boot_cpu_has(X86_FEATURE_X2APIC) |
f1240c00 | 341 | #define cpu_has_xsave boot_cpu_has(X86_FEATURE_XSAVE) |
212b0212 | 342 | #define cpu_has_xsaveopt boot_cpu_has(X86_FEATURE_XSAVEOPT) |
6229ad27 | 343 | #define cpu_has_xsaves boot_cpu_has(X86_FEATURE_XSAVES) |
66be8951 | 344 | #define cpu_has_osxsave boot_cpu_has(X86_FEATURE_OSXSAVE) |
49ab56ac | 345 | #define cpu_has_hypervisor boot_cpu_has(X86_FEATURE_HYPERVISOR) |
0e1227d3 | 346 | #define cpu_has_pclmulqdq boot_cpu_has(X86_FEATURE_PCLMULQDQ) |
4979d272 | 347 | #define cpu_has_perfctr_core boot_cpu_has(X86_FEATURE_PERFCTR_CORE) |
e259514e | 348 | #define cpu_has_perfctr_nb boot_cpu_has(X86_FEATURE_PERFCTR_NB) |
c43ca509 | 349 | #define cpu_has_perfctr_l2 boot_cpu_has(X86_FEATURE_PERFCTR_L2) |
3824abd1 CL |
350 | #define cpu_has_cx8 boot_cpu_has(X86_FEATURE_CX8) |
351 | #define cpu_has_cx16 boot_cpu_has(X86_FEATURE_CX16) | |
5d2bd700 | 352 | #define cpu_has_eager_fpu boot_cpu_has(X86_FEATURE_EAGER_FPU) |
193f3fcb | 353 | #define cpu_has_topoext boot_cpu_has(X86_FEATURE_TOPOEXT) |
7b11fb51 PA |
354 | |
355 | #ifdef CONFIG_X86_64 | |
356 | ||
357 | #undef cpu_has_vme | |
358 | #define cpu_has_vme 0 | |
359 | ||
7b11fb51 PA |
360 | #undef cpu_has_k6_mtrr |
361 | #define cpu_has_k6_mtrr 0 | |
362 | ||
363 | #undef cpu_has_cyrix_arr | |
364 | #define cpu_has_cyrix_arr 0 | |
365 | ||
366 | #undef cpu_has_centaur_mcr | |
367 | #define cpu_has_centaur_mcr 0 | |
368 | ||
369 | #endif /* CONFIG_X86_64 */ | |
370 | ||
2fd81864 | 371 | #if __GNUC__ >= 4 |
5700f743 | 372 | extern void warn_pre_alternatives(void); |
4a90a99c | 373 | extern bool __static_cpu_has_safe(u16 bit); |
5700f743 | 374 | |
a3c8acd0 PA |
375 | /* |
376 | * Static testing of CPU features. Used the same as boot_cpu_has(). | |
377 | * These are only valid after alternatives have run, but will statically | |
378 | * patch the target code for additional performance. | |
a3c8acd0 | 379 | */ |
83a7a2ad | 380 | static __always_inline __pure bool __static_cpu_has(u16 bit) |
a3c8acd0 | 381 | { |
62122fd7 | 382 | #ifdef CC_HAVE_ASM_GOTO |
5700f743 BP |
383 | |
384 | #ifdef CONFIG_X86_DEBUG_STATIC_CPU_HAS | |
62122fd7 | 385 | |
5700f743 BP |
386 | /* |
387 | * Catch too early usage of this before alternatives | |
388 | * have run. | |
389 | */ | |
3f0116c3 | 390 | asm_volatile_goto("1: jmp %l[t_warn]\n" |
5700f743 BP |
391 | "2:\n" |
392 | ".section .altinstructions,\"a\"\n" | |
393 | " .long 1b - .\n" | |
394 | " .long 0\n" /* no replacement */ | |
395 | " .word %P0\n" /* 1: do replace */ | |
396 | " .byte 2b - 1b\n" /* source len */ | |
397 | " .byte 0\n" /* replacement len */ | |
398 | ".previous\n" | |
399 | /* skipping size check since replacement size = 0 */ | |
400 | : : "i" (X86_FEATURE_ALWAYS) : : t_warn); | |
62122fd7 | 401 | |
5700f743 BP |
402 | #endif |
403 | ||
3f0116c3 | 404 | asm_volatile_goto("1: jmp %l[t_no]\n" |
a3c8acd0 PA |
405 | "2:\n" |
406 | ".section .altinstructions,\"a\"\n" | |
59e97e4d AL |
407 | " .long 1b - .\n" |
408 | " .long 0\n" /* no replacement */ | |
83a7a2ad | 409 | " .word %P0\n" /* feature bit */ |
a3c8acd0 PA |
410 | " .byte 2b - 1b\n" /* source len */ |
411 | " .byte 0\n" /* replacement len */ | |
a3c8acd0 | 412 | ".previous\n" |
83a7a2ad | 413 | /* skipping size check since replacement size = 0 */ |
a3c8acd0 PA |
414 | : : "i" (bit) : : t_no); |
415 | return true; | |
416 | t_no: | |
417 | return false; | |
5700f743 BP |
418 | |
419 | #ifdef CONFIG_X86_DEBUG_STATIC_CPU_HAS | |
420 | t_warn: | |
421 | warn_pre_alternatives(); | |
422 | return false; | |
423 | #endif | |
62122fd7 BP |
424 | |
425 | #else /* CC_HAVE_ASM_GOTO */ | |
426 | ||
a3c8acd0 PA |
427 | u8 flag; |
428 | /* Open-coded due to __stringify() in ALTERNATIVE() */ | |
429 | asm volatile("1: movb $0,%0\n" | |
430 | "2:\n" | |
431 | ".section .altinstructions,\"a\"\n" | |
59e97e4d AL |
432 | " .long 1b - .\n" |
433 | " .long 3f - .\n" | |
83a7a2ad | 434 | " .word %P1\n" /* feature bit */ |
a3c8acd0 PA |
435 | " .byte 2b - 1b\n" /* source len */ |
436 | " .byte 4f - 3f\n" /* replacement len */ | |
83a7a2ad PA |
437 | ".previous\n" |
438 | ".section .discard,\"aw\",@progbits\n" | |
439 | " .byte 0xff + (4f-3f) - (2b-1b)\n" /* size check */ | |
a3c8acd0 PA |
440 | ".previous\n" |
441 | ".section .altinstr_replacement,\"ax\"\n" | |
442 | "3: movb $1,%0\n" | |
443 | "4:\n" | |
444 | ".previous\n" | |
445 | : "=qm" (flag) : "i" (bit)); | |
446 | return flag; | |
62122fd7 BP |
447 | |
448 | #endif /* CC_HAVE_ASM_GOTO */ | |
a3c8acd0 PA |
449 | } |
450 | ||
451 | #define static_cpu_has(bit) \ | |
452 | ( \ | |
453 | __builtin_constant_p(boot_cpu_has(bit)) ? \ | |
454 | boot_cpu_has(bit) : \ | |
83a7a2ad | 455 | __builtin_constant_p(bit) ? \ |
a3c8acd0 PA |
456 | __static_cpu_has(bit) : \ |
457 | boot_cpu_has(bit) \ | |
458 | ) | |
4a90a99c BP |
459 | |
460 | static __always_inline __pure bool _static_cpu_has_safe(u16 bit) | |
461 | { | |
62122fd7 | 462 | #ifdef CC_HAVE_ASM_GOTO |
4a90a99c BP |
463 | /* |
464 | * We need to spell the jumps to the compiler because, depending on the offset, | |
465 | * the replacement jump can be bigger than the original jump, and this we cannot | |
466 | * have. Thus, we force the jump to the widest, 4-byte, signed relative | |
467 | * offset even though the last would often fit in less bytes. | |
468 | */ | |
3f0116c3 | 469 | asm_volatile_goto("1: .byte 0xe9\n .long %l[t_dynamic] - 2f\n" |
4a90a99c BP |
470 | "2:\n" |
471 | ".section .altinstructions,\"a\"\n" | |
472 | " .long 1b - .\n" /* src offset */ | |
473 | " .long 3f - .\n" /* repl offset */ | |
474 | " .word %P1\n" /* always replace */ | |
475 | " .byte 2b - 1b\n" /* src len */ | |
476 | " .byte 4f - 3f\n" /* repl len */ | |
477 | ".previous\n" | |
478 | ".section .altinstr_replacement,\"ax\"\n" | |
479 | "3: .byte 0xe9\n .long %l[t_no] - 2b\n" | |
480 | "4:\n" | |
481 | ".previous\n" | |
482 | ".section .altinstructions,\"a\"\n" | |
483 | " .long 1b - .\n" /* src offset */ | |
484 | " .long 0\n" /* no replacement */ | |
485 | " .word %P0\n" /* feature bit */ | |
486 | " .byte 2b - 1b\n" /* src len */ | |
487 | " .byte 0\n" /* repl len */ | |
488 | ".previous\n" | |
489 | : : "i" (bit), "i" (X86_FEATURE_ALWAYS) | |
490 | : : t_dynamic, t_no); | |
491 | return true; | |
492 | t_no: | |
493 | return false; | |
494 | t_dynamic: | |
495 | return __static_cpu_has_safe(bit); | |
62122fd7 | 496 | #else |
4a90a99c BP |
497 | u8 flag; |
498 | /* Open-coded due to __stringify() in ALTERNATIVE() */ | |
499 | asm volatile("1: movb $2,%0\n" | |
500 | "2:\n" | |
501 | ".section .altinstructions,\"a\"\n" | |
502 | " .long 1b - .\n" /* src offset */ | |
503 | " .long 3f - .\n" /* repl offset */ | |
504 | " .word %P2\n" /* always replace */ | |
505 | " .byte 2b - 1b\n" /* source len */ | |
506 | " .byte 4f - 3f\n" /* replacement len */ | |
507 | ".previous\n" | |
508 | ".section .discard,\"aw\",@progbits\n" | |
509 | " .byte 0xff + (4f-3f) - (2b-1b)\n" /* size check */ | |
510 | ".previous\n" | |
511 | ".section .altinstr_replacement,\"ax\"\n" | |
512 | "3: movb $0,%0\n" | |
513 | "4:\n" | |
514 | ".previous\n" | |
515 | ".section .altinstructions,\"a\"\n" | |
516 | " .long 1b - .\n" /* src offset */ | |
517 | " .long 5f - .\n" /* repl offset */ | |
518 | " .word %P1\n" /* feature bit */ | |
519 | " .byte 4b - 3b\n" /* src len */ | |
520 | " .byte 6f - 5f\n" /* repl len */ | |
521 | ".previous\n" | |
522 | ".section .discard,\"aw\",@progbits\n" | |
523 | " .byte 0xff + (6f-5f) - (4b-3b)\n" /* size check */ | |
524 | ".previous\n" | |
525 | ".section .altinstr_replacement,\"ax\"\n" | |
526 | "5: movb $1,%0\n" | |
527 | "6:\n" | |
528 | ".previous\n" | |
529 | : "=qm" (flag) | |
530 | : "i" (bit), "i" (X86_FEATURE_ALWAYS)); | |
531 | return (flag == 2 ? __static_cpu_has_safe(bit) : flag); | |
62122fd7 | 532 | #endif /* CC_HAVE_ASM_GOTO */ |
4a90a99c BP |
533 | } |
534 | ||
535 | #define static_cpu_has_safe(bit) \ | |
536 | ( \ | |
537 | __builtin_constant_p(boot_cpu_has(bit)) ? \ | |
538 | boot_cpu_has(bit) : \ | |
539 | _static_cpu_has_safe(bit) \ | |
540 | ) | |
1ba4f22c PA |
541 | #else |
542 | /* | |
543 | * gcc 3.x is too stupid to do the static test; fall back to dynamic. | |
544 | */ | |
4a90a99c BP |
545 | #define static_cpu_has(bit) boot_cpu_has(bit) |
546 | #define static_cpu_has_safe(bit) boot_cpu_has(bit) | |
1ba4f22c | 547 | #endif |
a3c8acd0 | 548 | |
9b13a93d BP |
549 | #define cpu_has_bug(c, bit) cpu_has(c, (bit)) |
550 | #define set_cpu_bug(c, bit) set_cpu_cap(c, (bit)) | |
551 | #define clear_cpu_bug(c, bit) clear_cpu_cap(c, (bit)) | |
65fc985b | 552 | |
9b13a93d BP |
553 | #define static_cpu_has_bug(bit) static_cpu_has((bit)) |
554 | #define static_cpu_has_bug_safe(bit) static_cpu_has_safe((bit)) | |
555 | #define boot_cpu_has_bug(bit) cpu_has_bug(&boot_cpu_data, (bit)) | |
65fc985b | 556 | |
9b13a93d BP |
557 | #define MAX_CPU_FEATURES (NCAPINTS * 32) |
558 | #define cpu_have_feature boot_cpu_has | |
2b9c1f03 | 559 | |
9b13a93d BP |
560 | #define CPU_FEATURE_TYPEFMT "x86,ven%04Xfam%04Xmod%04X" |
561 | #define CPU_FEATURE_TYPEVAL boot_cpu_data.x86_vendor, boot_cpu_data.x86, \ | |
562 | boot_cpu_data.x86_model | |
2b9c1f03 | 563 | |
fa1408e4 | 564 | #endif /* defined(__KERNEL__) && !defined(__ASSEMBLY__) */ |
1965aae3 | 565 | #endif /* _ASM_X86_CPUFEATURE_H */ |