[ale] Linux P5 f00f fix and idt

[Jason Boyles]

	This fix for the f00f bug is rather clever.

	I didn't realize that these invalid instruction sequences
resulted in the calling of low interrupts, so a fix of this nature was
quite a surprise, for me anyway.

	Anyone want to give any background on the fix in light of Alan's
BUGTRAQ announcement?

	Exactly what happens to result in these interrupts being called?

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Jason Boyles <jason at alltel.net>