SMP Motherboards and GRUB

In previous versions of Red Hat Enterprise Linux there were two different kernel
versions, a uniprocessor version and an SMP version. In Red Hat Enterprise
Linux 5.0.0 the kernel is SMP-enabled by default and will take advantage of
multiple core, hyperthreading, and multiple CPU capabilities when they are
present. This same kernel can run on single CPUs with a single core and no
hyperthreading

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