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 <jniet...@gmail.com> --- arch/powerpc/kernel/traps.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index d80b82fc1ae3..cd8b3043c268 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -1739,6 +1739,7 @@ void facility_unavailable_exception(struct pt_regs *regs) [FSCR_TAR_LG] = "TAR", [FSCR_MSGP_LG] = "MSGP", [FSCR_SCV_LG] = "SCV", + [FSCR_PREFIX_LG] = "PREFIX", }; char *facility = "unknown"; u64 value; -- 2.17.1