[PATCH 2/3] MIPS: kernel: traps: Dump the HTW registers on a MC exception

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The HTW registers can be useful to debug a MC exception.

Signed-off-by: Markos Chandras <markos.chandras@xxxxxxxxxx>
---
 arch/mips/kernel/traps.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 51fa5c3aa4fe..32feb481a67a 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -1385,6 +1385,11 @@ asmlinkage void do_mcheck(struct pt_regs *regs)
 		pr_info("EntryHi : %0*lx\n", field, read_c0_entryhi());
 		pr_info("EntryLo0: %0*lx\n", field, read_c0_entrylo0());
 		pr_info("EntryLo1: %0*lx\n", field, read_c0_entrylo1());
+		if (cpu_has_htw) {
+			pr_info("PWField : %0*lx\n", field, read_c0_pwfield());
+			pr_info("PWSize  : %0*lx\n", field, read_c0_pwsize());
+			pr_info("PWCtl   : %0x\n", read_c0_pwctl());
+		}
 		pr_info("\n");
 		dump_tlb_all();
 	}
-- 
2.1.3






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