cio_ignore= [S390]
See Documentation/s390/common_io.rst for details.
- clearcpuid=BITNUM[,BITNUM...] [X86]
+
- numbers. Note the Linux specific bits are not necessarily
- stable over kernel options, but the vendor specific
++ clearcpuid=X[,X...] [X86]
+ Disable CPUID feature X for the kernel. See
+ arch/x86/include/asm/cpufeatures.h for the valid bit
++ numbers X. Note the Linux-specific bits are not necessarily
++ stable over kernel options, but the vendor-specific
+ ones should be.
++ X can also be a string as appearing in the flags: line
++ in /proc/cpuinfo which does not have the above
++ instability issue. However, not all features have names
++ in /proc/cpuinfo.
++ Note that using this option will taint your kernel.
+ Also note that user programs calling CPUID directly
+ or using the feature without checking anything
+ will still see it. This just prevents it from
+ being used by the kernel or shown in /proc/cpuinfo.
+ Also note the kernel might malfunction if you disable
+ some critical bits.
+
clk_ignore_unused
[CLK]
Prevents the clock framework from automatically gating
nocache [ARM]
- delayacct [KNL] Enable per-task delay accounting
- noclflush [BUGS=X86] Don't use the CLFLUSH instruction
--
nodsp [SH] Disable hardware DSP at boot time.
noefi Disable EFI runtime services support.