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Can anyone explain what the following options from my centos 5.9 box do

CONFIG_HAS_IOPORT=y
CONFIG_HAS_DMA=y
CONFIG_GENERIC_HARDIRQS=y
CONFIG_GENERIC_IRQ_PROBE=y
CONFIG_GENERIC_PENDING_IRQ=y
CONFIG_X86_SMP=y
CONFIG_X86_HT=y
CONFIG_X86_BIOS_REBOOT=y
CONFIG_X86_TRAMPOLINE=y
CONFIG_KTIME_SCALAR=y
Alex
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  • The kernel source is structured in a modular fashion with support for various features included based on compile time options like these. So what they *did* was cause support for those features to be included in the kernel when it was compiled. – Brian Nov 03 '15 at 13:20
  • Thank you Brian for your explanation. I know that these are kernel features but what I ment was what actually do these options.(?) What each option enables or disables in the kernel. I couldn't find a list explaining what they do so I asked here. – Alex Nov 03 '15 at 14:28

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