UML configuration

Before describing the various configuration interfaces, I should point out that it is highly recommended to run defconfig before doing anything else. I describe exactly why later in this section, but, for now, suffice it to say that doing so will give you a UML configuration that is much more likely to boot and run.
There are a variety of kernel configuration interfaces, ranging from the almost completely hands-off oldconfig to the graphical and fairly user-friendly xconfig. Here are the major choices.

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