except when i've built a strictly 686 kernel on a K6 and tried to boot
it, it hangs immediately. so i suspect the K6 probably belongs in the
new Pentium+ category that Linus created for 2.2.0-preX. sorry about
"Socket 7" -- that was a red herring.
however, there remains an inconsistency between the config menu and the
help text, which is what i was reporting in the first place. that ought
to be addressed by someone who knows where K6 really belongs. i'm just
guessing.
isn't there any way to capture a software interrupt when these new
instructions/features are used on an old processor? i've worked on
mainframe systems where virtual instructions were added to the
processor's real instruction set by emulating them in the software
interrupt handler. one of them was "BPI" -- branch pending interrupt --
which allowed application programmers to identify instructions that
they thought might cause a software exception, and code a branch to
an appropriate error routine. easy, and didn't require any kind of
special signal handling.
-- Chuck
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