diff options
| -rw-r--r-- | modules/devices/x86/processor.c | 356 |
1 files changed, 228 insertions, 128 deletions
diff --git a/modules/devices/x86/processor.c b/modules/devices/x86/processor.c index 35ad9fcb..4e0363d4 100644 --- a/modules/devices/x86/processor.c +++ b/modules/devices/x86/processor.c @@ -372,139 +372,239 @@ GSList *processor_scan(void) /* * Sources: - * - Linux' cpufeature.h - * - http://gentoo-wiki.com/Cpuinfo + * - https://unix.stackexchange.com/a/43540 + * - https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/tree/arch/x86/include/asm/cpufeatures.h?id=refs/tags/v4.9 * - Intel IA-32 Architecture Software Development Manual - * - https://unix.stackexchange.com/questions/43539/what-do-the-flags-in-proc-cpuinfo-mean + * - http://gentoo-wiki.com/Cpuinfo */ static struct { char *name, *meaning; } flag_meaning[] = { - { "3dnow", "3DNow! Technology" }, - { "3dnowext", "Extended 3DNow! Technology" }, - { "fpu", "Floating Point Unit" }, - { "vme", "Virtual 86 Mode Extension" }, - { "de", "Debug Extensions - I/O breakpoints" }, - { "pse", "Page Size Extensions (4MB pages)" }, - { "tsc", "Time Stamp Counter and RDTSC instruction" }, - { "msr", "Model Specific Registers" }, - { "pae", "Physical Address Extensions" }, - { "mce", "Machine Check Architecture" }, - { "cx8", "CMPXCHG8 instruction" }, - { "apic", "Advanced Programmable Interrupt Controller" }, - { "sep", "Fast System Call (SYSENTER/SYSEXIT)" }, - { "mtrr", "Memory Type Range Registers" }, - { "pge", "Page Global Enable" }, - { "mca", "Machine Check Architecture" }, - { "cmov", "Conditional Move instruction" }, - { "pat", "Page Attribute Table" }, - { "pse36", "36bit Page Size Extensions" }, - { "psn", "96 bit Processor Serial Number" }, - { "mmx", "MMX technology" }, - { "mmxext", "Extended MMX Technology" }, - { "cflush", "Cache Flush" }, - { "dtes", "Debug Trace Store" }, - { "fxsr", "FXSAVE and FXRSTOR instructions" }, - { "kni", "Streaming SIMD instructions" }, - { "xmm", "Streaming SIMD instructions" }, - { "ht", "HyperThreading" }, - { "mp", "Multiprocessing Capable" }, - { "sse", "SSE instructions" }, - { "sse2", "SSE2 (WNI) instructions" }, - { "acc", "Automatic Clock Control" }, - { "ia64", "IA64 Instructions" }, - { "syscall", "SYSCALL and SYSEXIT instructions" }, - { "nx", "No-execute Page Protection" }, - { "xd", "Execute Disable" }, - { "clflush", "Cache Line Flush instruction" }, - { "acpi", "Thermal Monitor and Software Controlled Clock" }, - { "dts", "Debug Store" }, - { "ss", "Self Snoop" }, - { "tm", "Thermal Monitor" }, - { "pbe", "Pending Break Enable" }, - { "pb", "Pending Break Enable" }, - { "pn", "Processor serial number" }, - { "ds", "Debug Store" }, - { "xmm2", "Streaming SIMD Extensions-2" }, - { "xmm3", "Streaming SIMD Extensions-3" }, - { "selfsnoop", "CPU self snoop" }, - { "rdtscp", "RDTSCP" }, - { "recovery", "CPU in recovery mode" }, - { "longrun", "Longrun power control" }, - { "lrti", "LongRun table interface" }, - { "cxmmx", "Cyrix MMX extensions" }, - { "k6_mtrr", "AMD K6 nonstandard MTRRs" }, - { "cyrix_arr", "Cyrix ARRs (= MTRRs)" }, - { "centaur_mcr","Centaur MCRs (= MTRRs)" }, - { "constant_tsc","TSC ticks at a constant rate" }, - { "up", "smp kernel running on up" }, - { "fxsave_leak","FXSAVE leaks FOP/FIP/FOP" }, - { "arch_perfmon","Intel Architectural PerfMon" }, - { "pebs", "Precise-Event Based Sampling" }, - { "bts", "Branch Trace Store" }, - { "sync_rdtsc", "RDTSC synchronizes the CPU" }, - { "rep_good", "rep microcode works well on this CPU" }, - { "mwait", "Monitor/Mwait support" }, - { "ds_cpl", "CPL Qualified Debug Store" }, - { "est", "Enhanced SpeedStep" }, - { "tm2", "Thermal Monitor 2" }, - { "cid", "Context ID" }, - { "xtpr", "Send Task Priority Messages" }, - { "xstore", "on-CPU RNG present (xstore insn)" }, - { "xstore_en", "on-CPU RNG enabled" }, - { "xcrypt", "on-CPU crypto (xcrypt insn)" }, - { "xcrypt_en", "on-CPU crypto enabled" }, - { "ace2", "Advanced Cryptography Engine v2" }, - { "ace2_en", "ACE v2 enabled" }, - { "phe", "PadLock Hash Engine" }, - { "phe_en", "PHE enabled" }, - { "pmm", "PadLock Montgomery Multiplier" }, - { "pmm_en", "PMM enabled" }, - { "lahf_lm", "LAHF/SAHF in long mode" }, - { "cmp_legacy", "HyperThreading not valid" }, - { "lm", "LAHF/SAHF in long mode" }, - { "ds_cpl", "CPL Qualified Debug Store" }, - { "vmx", "Virtualization support (Intel)" }, - { "svm", "Virtualization support (AMD)" }, - { "est", "Enhanced SpeedStep" }, - { "tm2", "Thermal Monitor 2" }, - { "ssse3", "Supplemental Streaming SIMD Extension 3" }, - { "cx16", "CMPXCHG16B instruction" }, - { "xptr", "Send Task Priority Messages" }, - { "pebs", "Precise Event Based Sampling" }, - { "bts", "Branch Trace Store" }, - { "ida", "Intel Dynamic Acceleration" }, - { "arch_perfmon","Intel Architectural PerfMon" }, - { "pni", "Streaming SIMD Extension 3 (Prescott New Instruction)" }, - { "rep_good", "rep microcode works well on this CPU" }, - { "ts", "Thermal Sensor" }, - { "sse3", "Streaming SIMD Extension 3" }, - { "sse4", "Streaming SIMD Extension 4" }, - { "tni", "Tejas New Instruction" }, - { "nni", "Nehalem New Instruction" }, - { "tpr", "Task Priority Register" }, - { "vid", "Voltage Identifier" }, - { "fid", "Frequency Identifier" }, - { "dtes64", "64-bit Debug Store" }, - { "monitor", "Monitor/Mwait support" }, - { "sse4_1", "Streaming SIMD Extension 4.1" }, - { "sse4_2", "Streaming SIMD Extension 4.2" }, - { "nopl", "NOPL instructions" }, - { "cxmmx", "Cyrix MMX extensions" }, - { "xtopology", "CPU topology enum extensions" }, - { "nonstop_tsc", "TSC does not stop in C states" }, - { "eagerfpu", "Non lazy FPU restor" }, - { "pclmulqdq", "Perform a Carry-Less Multiplication of Quadword instruction" }, - { "smx", "Safer mode: TXT (TPM support)" }, - { "pdcm", "Performance capabilities" }, - { "pcid", "Process Context Identifiers" }, - { "x2apic", "x2APIC" }, - { "popcnt", "Set bit count instructions" }, - { "aes", "Advanced Encryption Standard" }, - { "aes-ni", "Advanced Encryption Standard (New Instructions)" }, - { "xsave", "Save Processor Extended States" }, - { "avx", "Advanced Vector Instructions" }, - { NULL, NULL }, +/* Intel-defined CPU features, CPUID level 0x00000001 (edx) + * See also Wikipedia and table 2-27 in Intel Advanced Vector Extensions Programming Reference */ + { "fpu", "Onboard FPU (floating point support)" }, + { "vme", "Virtual 8086 mode enhancements" }, + { "de", "Debugging Extensions (CR4.DE)" }, + { "pse", "Page Size Extensions (4MB memory pages)" }, + { "tsc", "Time Stamp Counter (RDTSC)" }, + { "msr", "Model-Specific Registers (RDMSR, WRMSR)" }, + { "pae", "Physical Address Extensions (support for more than 4GB of RAM)" }, + { "mce", "Machine Check Exception" }, + { "cx8", "CMPXCHG8 instruction (64-bit compare-and-swap)" }, + { "apic", "Onboard APIC" }, + { "sep", "SYSENTER/SYSEXIT" }, + { "mtrr", "Memory Type Range Registers" }, + { "pge", "Page Global Enable (global bit in PDEs and PTEs)" }, + { "mca", "Machine Check Architecture" }, + { "cmov", "CMOV instructions (conditional move) (also FCMOV)" }, + { "pat", "Page Attribute Table" }, + { "pse36", "36-bit PSEs (huge pages)" }, + { "pn", "Processor serial number" }, + { "clflush", "Cache Line Flush instruction" }, + { "dts", "Debug Store (buffer for debugging and profiling instructions)" }, + { "acpi", "ACPI via MSR (temperature monitoring and clock speed modulation)" }, + { "mmx", "Multimedia Extensions" }, + { "fxsr", "FXSAVE/FXRSTOR, CR4.OSFXSR" }, + { "sse", "Intel SSE vector instructions" }, + { "sse2", "SSE2" }, + { "ss", "CPU self snoop" }, + { "ht", "Hyper-Threading" }, + { "tm", "Automatic clock control (Thermal Monitor)" }, + { "ia64", "Intel Itanium Architecture 64-bit (not to be confused with Intel's 64-bit x86 architecture with flag x86-64 or \"AMD64\" bit indicated by flag lm)" }, + { "pbe", "Pending Break Enable (PBE# pin) wakeup support" }, +/* AMD-defined CPU features, CPUID level 0x80000001 + * See also Wikipedia and table 2-23 in Intel Advanced Vector Extensions Programming Reference */ + { "syscall", "SYSCALL (Fast System Call) and SYSRET (Return From Fast System Call)" }, + { "mp", "Multiprocessing Capable." }, + { "nx", "Execute Disable" }, + { "mmxext", "AMD MMX extensions" }, + { "fxsr_opt", "FXSAVE/FXRSTOR optimizations" }, + { "pdpe1gb", "One GB pages (allows hugepagesz=1G)" }, + { "rdtscp", "Read Time-Stamp Counter and Processor ID" }, + { "lm", "Long Mode (x86-64: amd64, also known as Intel 64, i.e. 64-bit capable)" }, + { "3dnow", "3DNow! (AMD vector instructions, competing with Intel's SSE1)" }, + { "3dnowext", "AMD 3DNow! extensions" }, +/* Transmeta-defined CPU features, CPUID level 0x80860001 */ + { "recovery", "CPU in recovery mode" }, + { "longrun", "Longrun power control" }, + { "lrti", "LongRun table interface" }, +/* Other features, Linux-defined mapping */ + { "cxmmx", "Cyrix MMX extensions" }, + { "k6_mtrr", "AMD K6 nonstandard MTRRs" }, + { "cyrix_arr", "Cyrix ARRs (= MTRRs)" }, + { "centaur_mcr", "Centaur MCRs (= MTRRs)" }, + { "constant_tsc", "TSC ticks at a constant rate" }, + { "up", "SMP kernel running on UP" }, + { "art", "Always-Running Timer" }, + { "arch_perfmon", "Intel Architectural PerfMon" }, + { "pebs", "Precise-Event Based Sampling" }, + { "bts", "Branch Trace Store" }, + { "rep_good", "rep microcode works well" }, + { "acc_power", "AMD accumulated power mechanism" }, + { "nopl", "The NOPL (0F 1F) instructions" }, + { "xtopology", "cpu topology enum extensions" }, + { "tsc_reliable", "TSC is known to be reliable" }, + { "nonstop_tsc", "TSC does not stop in C states" }, + { "extd_apicid", "has extended APICID (8 bits)" }, + { "amd_dcm", "multi-node processor" }, + { "aperfmperf", "APERFMPERF" }, + { "eagerfpu", "Non lazy FPU restore" }, + { "nonstop_tsc_s3", "TSC doesn't stop in S3 state" }, + { "mce_recovery", "CPU has recoverable machine checks" }, +/* Intel-defined CPU features, CPUID level 0x00000001 (ecx) + * See also Wikipedia and table 2-26 in Intel Advanced Vector Extensions Programming Reference */ + { "pni", "SSE-3 (“Prescott New Instructions”)" }, + { "pclmulqdq", "Perform a Carry-Less Multiplication of Quadword instruction — accelerator for GCM)" }, + { "dtes64", "64-bit Debug Store" }, + { "monitor", "Monitor/Mwait support (Intel SSE3 supplements)" }, + { "ds_cpl", "CPL Qual. Debug Store" }, + { "vmx: Hardware virtualization", "Intel VMX" }, + { "smx: Safer mode", "TXT (TPM support)" }, + { "est", "Enhanced SpeedStep" }, + { "tm2", "Thermal Monitor 2" }, + { "ssse3", "Supplemental SSE-3" }, + { "cid", "Context ID" }, + { "sdbg", "silicon debug" }, + { "fma", "Fused multiply-add" }, + { "cx16", "CMPXCHG16B" }, + { "xtpr", "Send Task Priority Messages" }, + { "pdcm", "Performance Capabilities" }, + { "pcid", "Process Context Identifiers" }, + { "dca", "Direct Cache Access" }, + { "sse4_1", "SSE-4.1" }, + { "sse4_2", "SSE-4.2" }, + { "x2apic", "x2APIC" }, + { "movbe", "Move Data After Swapping Bytes instruction" }, + { "popcnt", "Return the Count of Number of Bits Set to 1 instruction (Hamming weight, i.e. bit count)" }, + { "tsc_deadline_timer", "Tsc deadline timer" }, + { "aes/aes-ni", "Advanced Encryption Standard (New Instructions)" }, + { "xsave", "Save Processor Extended States: also provides XGETBY,XRSTOR,XSETBY" }, + { "avx", "Advanced Vector Extensions" }, + { "f16c", "16-bit fp conversions (CVT16)" }, + { "rdrand", "Read Random Number from hardware random number generator instruction" }, + { "hypervisor", "Running on a hypervisor" }, +/* VIA/Cyrix/Centaur-defined CPU features, CPUID level 0xC0000001 */ + { "rng", "Random Number Generator present (xstore)" }, + { "rng_en", "Random Number Generator enabled" }, + { "ace", "on-CPU crypto (xcrypt)" }, + { "ace_en", "on-CPU crypto enabled" }, + { "ace2", "Advanced Cryptography Engine v2" }, + { "ace2_en", "ACE v2 enabled" }, + { "phe", "PadLock Hash Engine" }, + { "phe_en", "PHE enabled" }, + { "pmm", "PadLock Montgomery Multiplier" }, + { "pmm_en", "PMM enabled" }, +/* More extended AMD flags: CPUID level 0x80000001, ecx */ + { "lahf_lm", "Load AH from Flags (LAHF) and Store AH into Flags (SAHF) in long mode" }, + { "cmp_legacy", "If yes HyperThreading not valid" }, + { "svm", "\"Secure virtual machine\": AMD-V" }, + { "extapic", "Extended APIC space" }, + { "cr8_legacy", "CR8 in 32-bit mode" }, + { "abm", "Advanced Bit Manipulation" }, + { "sse4a", "SSE-4A" }, + { "misalignsse", "indicates if a general-protection exception (#GP) is generated when some legacy SSE instructions operate on unaligned data. Also depends on CR0 and Alignment Checking bit" }, + { "3dnowprefetch", "3DNow prefetch instructions" }, + { "osvw", "indicates OS Visible Workaround, which allows the OS to work around processor errata." }, + { "ibs", "Instruction Based Sampling" }, + { "xop", "extended AVX instructions" }, + { "skinit", "SKINIT/STGI instructions" }, + { "wdt", "Watchdog timer" }, + { "lwp", "Light Weight Profiling" }, + { "fma4", "4 operands MAC instructions" }, + { "tce", "translation cache extension" }, + { "nodeid_msr", "NodeId MSR" }, + { "tbm", "Trailing Bit Manipulation" }, + { "topoext", "Topology Extensions CPUID leafs" }, + { "perfctr_core", "Core Performance Counter Extensions" }, + { "perfctr_nb", "NB Performance Counter Extensions" }, + { "bpext", "data breakpoint extension" }, + { "ptsc", "performance time-stamp counter" }, + { "perfctr_l2", "L2 Performance Counter Extensions" }, + { "mwaitx", "MWAIT extension (MONITORX/MWAITX)" }, +/* Auxiliary flags: Linux defined - For features scattered in various CPUID levels */ + { "cpb", "AMD Core Performance Boost" }, + { "epb", "IA32_ENERGY_PERF_BIAS support" }, + { "hw_pstate", "AMD HW-PState" }, + { "proc_feedback", "AMD ProcFeedbackInterface" }, + { "intel_pt", "Intel Processor Tracing" }, +/* Virtualization flags: Linux defined */ + { "tpr_shadow", "Intel TPR Shadow" }, + { "vnmi", "Intel Virtual NMI" }, + { "flexpriority", "Intel FlexPriority" }, + { "ept", "Intel Extended Page Table" }, + { "vpid", "Intel Virtual Processor ID" }, + { "vmmcall", "prefer VMMCALL to VMCALL" }, +/* Intel-defined CPU features, CPUID level 0x00000007:0 (ebx) */ + { "fsgsbase", "{RD/WR}{FS/GS}BASE instructions" }, + { "tsc_adjust", "TSC adjustment MSR" }, + { "bmi1", "1st group bit manipulation extensions" }, + { "hle", "Hardware Lock Elision" }, + { "avx2", "AVX2 instructions" }, + { "smep", "Supervisor Mode Execution Protection" }, + { "bmi2", "2nd group bit manipulation extensions" }, + { "erms", "Enhanced REP MOVSB/STOSB" }, + { "invpcid", "Invalidate Processor Context ID" }, + { "rtm", "Restricted Transactional Memory" }, + { "cqm", "Cache QoS Monitoring" }, + { "mpx", "Memory Protection Extension" }, + { "avx512f", "AVX-512 foundation" }, + { "avx512dq", "AVX-512 Double/Quad instructions" }, + { "rdseed", "The RDSEED instruction" }, + { "adx", "The ADCX and ADOX instructions" }, + { "smap", "Supervisor Mode Access Prevention" }, + { "clflushopt", "CLFLUSHOPT instruction" }, + { "clwb", "CLWB instruction" }, + { "avx512pf", "AVX-512 Prefetch" }, + { "avx512er", "AVX-512 Exponential and Reciprocal" }, + { "avx512cd", "AVX-512 Conflict Detection" }, + { "sha_ni", "SHA1/SHA256 Instruction Extensions" }, + { "avx512bw", "AVX-512 Byte/Word instructions" }, + { "avx512vl", "AVX-512 128/256 Vector Length extensions" }, +/* Extended state features, CPUID level 0x0000000d:1 (eax) */ + { "xsaveopt", "Optimized XSAVE" }, + { "xsavec", "XSAVEC" }, + { "xgetbv1", "XGETBV with ECX = 1" }, + { "xsaves", "XSAVES/XRSTORS" }, +/* Intel-defined CPU QoS sub-leaf, CPUID level 0x0000000F:0 (edx) */ + { "cqm_llc", "LLC QoS" }, +/* Intel-defined CPU QoS sub-leaf, CPUID level 0x0000000F:1 (edx) */ + { "cqm_occup_llc", "LLC occupancy monitoring" }, + { "cqm_mbm_total", "LLC total MBM monitoring" }, + { "cqm_mbm_local", "LLC local MBM monitoring" }, +/* AMD-defined CPU features, CPUID level 0x80000008 (ebx) */ + { "clzero", "CLZERO instruction" }, + { "irperf", "instructions retired performance counter" }, +/* Thermal and Power Management leaf, CPUID level 0x00000006 (eax) */ + { "dtherm (formerly dts)", "digital thermal sensor" }, + { "ida", "Intel Dynamic Acceleration" }, + { "arat", "Always Running APIC Timer" }, + { "pln", "Intel Power Limit Notification" }, + { "pts", "Intel Package Thermal Status" }, + { "hwp", "Intel Hardware P-states" }, + { "hwp_notify", "HWP notification" }, + { "hwp_act_window", "HWP Activity Window" }, + { "hwp_epp", "HWP Energy Performance Preference" }, + { "hwp_pkg_req", "HWP package-level request" }, +/* AMD SVM Feature Identification, CPUID level 0x8000000a (edx) */ + { "npt", "AMD Nested Page Table support" }, + { "lbrv", "AMD LBR Virtualization support" }, + { "svm_lock", "AMD SVM locking MSR" }, + { "nrip_save", "AMD SVM next_rip save" }, + { "tsc_scale", "AMD TSC scaling support" }, + { "vmcb_clean", "AMD VMCB clean bits support" }, + { "flushbyasid", "AMD flush-by-ASID support" }, + { "decodeassists", "AMD Decode Assists support" }, + { "pausefilter", "AMD filtered pause intercept" }, + { "pfthreshold", "AMD pause filter threshold" }, + { "avic", "Virtual Interrupt Controller" }, +/* Intel-defined CPU features, CPUID level 0x00000007:0 (ecx) */ + { "pku", "Protection Keys for Userspace" }, + { "ospke", "OS Protection Keys Enable" }, +/* AMD-defined CPU features, CPUID level 0x80000007 (ebx) */ + { "overflow_recov", "MCA overflow recovery support" }, + { "succor", "uncorrectable error containment and recovery" }, + { "smca", "Scalable MCA" }, + { NULL, NULL}, }; static struct { |