Name
SMP — Symmetric multi-processing support
This enables support for systems with more than one CPU. If you have a system with only one CPU, like most personal computers, say no. If you have a system with more than one CPU, say yes.
If you say no here, the kernel will run on single and multiprocessor machines, but will use only one CPU of a multiprocessor machine. If you say yes here, the kernel will run on many, but not all, singleprocessor machines. On a singleprocessor machine, the kernel will run faster if you say no here.
Note that if you say yes here and choose architecture 586
or Pentium
under Processor family
, the kernel will not work
on 486 architectures. Similarly, multiprocessor kernels for the
PPro
architecture may not work on
all Pentium based boards.
See also Documentation/smp.txt, Documentation/i386/IO-APIC.txt, Documentation/nmi_watchdog.txt, and the SMP-HOWTO available at http://www.tldp.org/docs.html#howto.
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