Created
May 26, 2022 18:23
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Script to check x86-64 instruction set level for EL9 support
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| #!/usr/bin/awk -f | |
| BEGIN { | |
| while (!/flags/) if (getline < "/proc/cpuinfo" != 1) exit 1 | |
| if (/lm/&&/cmov/&&/cx8/&&/fpu/&&/fxsr/&&/mmx/&&/syscall/&&/sse2/) level = 1 | |
| if (level == 1 && /cx16/&&/lahf/&&/popcnt/&&/sse4_1/&&/sse4_2/&&/ssse3/) level = 2 | |
| if (level == 2 && /avx/&&/avx2/&&/bmi1/&&/bmi2/&&/f16c/&&/fma/&&/abm/&&/movbe/&&/xsave/) level = 3 | |
| if (level == 3 && /avx512f/&&/avx512bw/&&/avx512cd/&&/avx512dq/&&/avx512vl/) level = 4 | |
| if (level > 0) { print "CPU supports x86-64-v" level; exit level + 1 } | |
| exit 1 | |
| } |
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| https://developers.redhat.com/blog/2021/01/05/building-red-hat-enterprise-linux-9-for-the-x86-64-v2-microarchitecture-level |
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