Have a look at /sys/kernel/debug/powerpc/emulated_instructions/ then?
Userspace should *NEVER* rely on the content of debugfs, it will
change
with time, it is not a guaranteed ABI, it's purely for people to look
at... for debugging.
malc didn't say what he wants it for... People are in userspace as
well ;-)
At this stage I would recommend using arch 2.06 as your key/trigger
and
either add a handful of known PVR values (mfpvr is emulated) for other
CPUs you know support it (there shouldn't be that many), or just do
the
heuristic :-(
That's for 64-bit; another good option for 64-bit is to just never use
isel, it hardly ever buys you anything. It is much more useful on the
(older) 32-bit cores that support it.
Why does the kernel emulate this, btw? I can see emulation is useful
for running older binaries, for instructions that have been removed
from the architecture; but for newly added instructions, or optional
instructions, it hurts more than it helps?
Segher
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