Linux で CPU のマイクロコードのバージョンは /proc/cpuinfo で確認できる
$ cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 63 model name : Intel(R) Xeon(R) CPU E5-2666 v3 @ 2.90GHz stepping : 2 microcode : 0x3b ★ cpu MHz : 2899.843 cache size : 25600 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 1 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology eagerfpu pni pclmulqdq ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm invpcid_single kaiser fsgsbase bmi1 avx2 smep bmi2 erms invpcid xsaveopt bugs : cpu_meltdown spectre_v1 spectre_v2 ★ bogomips : 5800.19 clflush size : 64 cache_alignment : 64 address sizes : 46 bits physical, 48 bits virtual power management:
