>This patch changes the f00f bug workaround code to use a fixed mapping
>instead of touching the page tables directly. It also removes the
>assumption that only 686's don't have the bug. It has been tested for
>normal operation of the relocated IDT, but I don't have a processor with
>the bug to do a real test. Could someone with such a processor please
>verify that the workaround still works?
It doesn't. 2.4.9-ac16 + your patch booted ok on my P5MMX, and the
kernel printed that it applied the F0 0F workaround, but executing
F0 0F C7 C8 in user-space caused an instant lockup.
/Mikael
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