summary refs log tree commit diff
diff options
context:
space:
mode:
authorMarkos Chandras <markos.chandras@imgtec.com>2014-11-12 09:22:42 +0000
committerRalf Baechle <ralf@linux-mips.org>2014-11-24 07:45:31 +0100
commit31ec86b8549992923c2639fa1841a02e48b93310 (patch)
tree437d416724373ec11cebdf4b68267ca5d813395a
parent314727fe5cea60fb8d1bdd75e54f2491aa079820 (diff)
downloadlinux-31ec86b8549992923c2639fa1841a02e48b93310.tar.gz
MIPS: traps: Dump the HTW registers on a MC exception
The HTW registers can be useful to debug a MC exception.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8400/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--arch/mips/kernel/traps.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index dde5d8f6c491..807def5ab5ed 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -1432,6 +1432,11 @@ asmlinkage void do_mcheck(struct pt_regs *regs)
 		pr_err("EntryHi : %0*lx\n", field, read_c0_entryhi());
 		pr_err("EntryLo0: %0*lx\n", field, read_c0_entrylo0());
 		pr_err("EntryLo1: %0*lx\n", field, read_c0_entrylo1());
+		if (cpu_has_htw) {
+			pr_err("PWField : %0*lx\n", field, read_c0_pwfield());
+			pr_err("PWSize  : %0*lx\n", field, read_c0_pwsize());
+			pr_err("PWCtl   : %0x\n", read_c0_pwctl());
+		}
 		pr_err("\n");
 		dump_tlb_all();
 	}