Re: [PATCH v3 07/14] powerpc/traps: Check for prefixed instructions in facility_unavailable_exception()

Jordan Niethe's on February 27, 2020 9:52 am:

On Wed, Feb 26, 2020 at 5:53 PM Nicholas Piggin [off-list ref] wrote:

quoted

Jordan Niethe's on February 26, 2020 2:07 pm:

quoted

If prefixed instructions are made unavailable by the [H]FSCR, attempting
to use them will cause a facility unavailable exception. Add "PREFIX" to
the facility_strings[].

Currently there are no prefixed instructions that are actually emulated
by emulate_instruction() within facility_unavailable_exception().
However, when caused by a prefixed instructions the SRR1 PREFIXED bit is
set. Prepare for dealing with emulated prefixed instructions by checking
for this bit.

Signed-off-by: Jordan Niethe <redacted>

Oh you've got it here, I would just squash this together with the first
patch.

Sure, I'll put them together. When you mentioned a couple more things
to do in traps.c, was it just this? Or is there still more to be done
adding an FSCR?

Hmm... maybe it's just that one.

Thanks,
Nick