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Date: Sat, 18 May 2024 13:17:53 -0400
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From: DFS <nospam@dfs.com>
Subject: Re: cpu-x
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On 5/18/2024 10:09 AM, vallor wrote:
> On Fri, 17 May 2024 19:18:38 -0400, DFS <nospam@dfs.com> wrote in
> <6647e5ce$0$6435$882e4bbb@reader.netnews.com>:
> 
>> I tried cpuid -1  (info for only one processor).  It output an
>> incredible amt of info, 816 lines, but it looks like a bitch to parse.
> 
> Thanks for the pointer.
> 
> What do you need to parse it for?  Is it not "well-formatted" enough?


If you want to parse out the supported/not supported CPU features, it's 
confusing where to look for them.


    Advanced Power Management Features (0x80000007/ecx):
    Advanced Power Management Features (0x80000007/edx):
    AMD feature flags (0x80000001/ecx):
    AMD Secure Encryption (0x8000001f):
    Architecture Performance Monitoring Features (0xa):
    AVX/YMM features (0xd/2):
    CET_S state features (0xd/0xc):
    CET_U state features (0xd/0xb):
    Extended Feature 2 (0x80000021):
    Extended Feature Extensions ID (0x80000008/ebx):
    extended feature flags (0x80000001/edx):
    extended feature flags (7):
    Feature Extended Size (0x80000008/edx):
    feature information (1/ecx):
    feature information (1/edx):
    Thermal and Power Management Features (6):
    x2APIC features / processor topology (0xb):
    XSAVE features (0xd/0):
    XSAVE features (0xd/1):


$ hwinfo says my 5600G chips supports 102 CPU features (I sorted the list):

3dnowprefetch abm adx aes apic arat avx avx2 bmi1 bmi2 clflush 
clflushopt clwb clzero cmov cmp_legacy constant_tsc cpuid cr8_legacy 
cx16 cx8 de decodeassists erms extd_apicid f16c flushbyasid fma fpu 
fsgsbase fsrm fxsr fxsr_opt ht hypervisor ibpb ibrs invpcid lahf_lm lm 
mca mce misalignsse mmx mmxext movbe msr mtrr nonstop_tsc nopl npt 
nrip_save nx osvw pae pat pausefilter pclmulqdq pdpe1gb perfctr_core 
pfthreshold pge pni popcnt pse pse36 rdpid rdrand rdseed rdtscp rep_good 
sep sha_ni smap smep ssbd sse sse2 sse4_1 sse4_2 sse4a ssse3 stibp svm 
syscall topoext tsc tsc_reliable tsc_scale umip v_vmsave_vmload vaes 
vmcb_clean vme vmmcall vpclmulqdq xgetbv1 xsave xsavec xsaveerptr 
xsaveopt xsaves


Then I bounced the list against the output of CPUID:


#  hwinfo flag      Found in CPUID output
-----------------------------------------
1 3dnowprefetch   : not found
2 abm             : not found
3 adx             : found in 'ADX instructions = true'
4 aes             : found in 'AES instruction = true'
5 apic            : found in 'process local APIC physical ID = 0x3 (3)'
6 arat            : found in 'ARAT always running APIC timer = false'
7 avx             : found in 'AVX: advanced vector extensions = true'
8 avx2            : found in 'AVX2: advanced vector extensions 2 = true'
9 bmi1            : found in 'BMI1 instructions = true'
10 bmi2            : found in 'BMI2 instructions = true'
11 clflush         : found in 'CLFLUSH line size = 0x8 (8)'
12 clflushopt      : found in 'CLFLUSHOPT instruction = true'
13 clwb            : found in 'CLWB instruction = true'
14 clzero          : found in 'CLZERO instruction = true'
15 cmov            : found in 'CMOV: conditional move/compare instr = true'
16 cmp_legacy      : not found
17 constant_tsc    : not found
18 cpuid           : not found
19 cr8_legacy      : not found
20 cx16            : not found
21 cx8             : not found
22 de              : found in 'model = 0x0 (0)'
23 decodeassists   : not found
24 erms            : not found
25 extd_apicid     : not found
26 f16c            : found in 'F16C half-precision convert instruction = 
true'
27 flushbyasid     : not found
28 fma             : found in 'FMA instruction = true'
29 fpu             : found in 'x87 FPU on chip = true'
30 fsgsbase        : found in 'FSGSBASE instructions = true'
31 fsrm            : not found
32 fxsr            : not found
33 fxsr_opt        : not found
34 ht              : found in 'reenlightenment MSRs = true'
35 hypervisor      : found in 'hypervisor guest status = true'
36 ibpb            : found in 'IBRS/IBPB: indirect branch restrictions = 
false'
37 ibrs            : found in 'IBRS/IBPB: indirect branch restrictions = 
false'
38 invpcid         : found in 'INVPCID instruction = true'
39 lahf_lm         : not found
40 lm              : found in 'PCLMULDQ instruction = true'
41 mca             : found in 'MCA: machine check architecture = true'
42 mce             : found in 'MCE: machine check exception = true'
43 misalignsse     : not found
44 mmx             : found in 'MMX Technology = true'
45 mmxext          : not found
46 movbe           : found in 'MOVBE instruction = true'
47 msr             : found in 'RDMSR and WRMSR support = true'
48 mtrr            : found in 'MTRR: memory type range registers = true'
49 nonstop_tsc     : not found
50 nopl            : not found
51 npt             : not found
52 nrip_save       : not found
53 nx              : not found
54 osvw            : not found
55 pae             : found in 'PAE: physical address extensions = true'
56 pat             : found in 'PAT: page attribute table = true'
57 pausefilter     : not found
58 pclmulqdq       : found in 'VPCLMULQDQ instruction = true'
59 pdpe1gb         : not found
60 perfctr_core    : not found
61 pfthreshold     : not found
62 pge             : not found
63 pni             : found in 'PNI/SSE3: Prescott New Instructions = true'
64 popcnt          : found in 'POPCNT instruction = true'
65 pse             : found in 'PSE: page size extensions = true'
66 pse36           : not found
67 rdpid           : found in 'RDPID: read processor D supported = true'
68 rdrand          : found in 'RDRAND instruction = true'
69 rdseed          : found in 'RDSEED instruction = true'
70 rdtscp          : found in 'RDTSCP = true'
71 rep_good        : not found
72 sep             : not found
73 sha_ni          : not found
74 smap            : found in 'SMAP: supervisor mode access prevention = 
true'
75 smep            : found in 'SMEP supervisor mode exec protection = true'
76 ssbd            : found in 'SSBD: speculative store bypass disable = 
false'
77 sse             : found in 'SSE extensions = true'
78 sse2            : found in 'SSE2 extensions = true'
79 sse4_1          : not found
80 sse4_2          : not found
81 sse4a           : found in 'SSE4A support = true'
82 ssse3           : found in 'SSSE3 extensions = true'
83 stibp           : found in 'STIBP: 1 thr indirect branch predictor = 
false'
84 svm             : found in 'SvmSupported = false'
85 syscall         : found in 'SYSCALL and SYSRET instructions = true'
86 topoext         : not found
87 tsc             : found in 'TSC: time stamp counter = true'
88 tsc_reliable    : not found
89 tsc_scale       : not found
90 umip            : found in 'UMIP: user-mode instruction prevention = 
true'
91 v_vmsave_vmload : not found
92 vaes            : found in 'VAES instructions = true'
93 vmcb_clean      : not found
94 vme             : found in 'VME: virtual-8086 mode enhancement = true'
95 vmmcall         : not found
96 vpclmulqdq      : found in 'VPCLMULQDQ instruction = true'
97 xgetbv1         : not found
98 xsave           : found in 'FXSAVE/FXRSTOR = true'
99 xsavec          : found in 'XSAVEC instruction = true'
100 xsaveerptr      : not found
101 xsaveopt        : found in 'XSAVEOPT instruction = true'
102 xsaves          : found in 'XSAVES/XRSTORS instructions = true'

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