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[180.150.65.4]) by smtp.gmail.com with ESMTPSA id a19sm1189025pju.11.2020.02.10.21.35.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 Feb 2020 21:36:05 -0800 (PST) From: Jordan Niethe To: linuxppc-dev@lists.ozlabs.org Subject: [PATCH v2 07/13] powerpc/traps: Check for prefixed instructions in facility_unavailable_exception() Date: Tue, 11 Feb 2020 16:33:49 +1100 Message-Id: <20200211053355.21574-8-jniethe5@gmail.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200211053355.21574-1-jniethe5@gmail.com> References: <20200211053355.21574-1-jniethe5@gmail.com> X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alistair@popple.id.au, mpe@ellerman.id.a, Jordan Niethe , dja@axtens.net, bala24@linux.ibm.com Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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 --- 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