sparc/ppc/arm compat siginfo ABI regressions: sending SIGFPE via kill() returns wrong values in si_pid and si_uid

[Linus Torvalds]

Does this attached patch perhaps fix the ARM case?

It just uses FPE_FLTUNK as the default si_code for SIGFPE, which seems
sane enough. And then gets rid of FPE_FIXME, which should resolve the
nasty case.

Hmm? Entirely untested, and I didn't really look at the test-case in
question since I can't really run it anyway.

Well, I could run it all on x86-64, but it doesn't have that FPE_FIXME
case at all.

                 Linus
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