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Phoronix: Linux 5.19 Makes It Much Easier To Clear CPUID Features
The Linux x86/x86_64 kernel has long honored the "clearcpuid=" kernel parameter to disable select CPUID features from being used by the kernel or readily advertised. However, it hasn't been very intuitive to use since it relied on passing the bit numbers for the specific features. With Linux 5.19 it's much easier to deal with in now allowing the CPUID string from /proc/cpuinfo to be passed if wanting particular CPUID features disabled...
The Linux x86/x86_64 kernel has long honored the "clearcpuid=" kernel parameter to disable select CPUID features from being used by the kernel or readily advertised. However, it hasn't been very intuitive to use since it relied on passing the bit numbers for the specific features. With Linux 5.19 it's much easier to deal with in now allowing the CPUID string from /proc/cpuinfo to be passed if wanting particular CPUID features disabled...
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