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authorRalf Baechle <ralf@linux-mips.org>2006-05-24 16:51:02 +0100
committerRalf Baechle <ralf@linux-mips.org>2006-06-06 00:15:13 +0100
commitcac4bcbce0e800f2219a27b66aaeb4a33f2e3dbc (patch)
treed70076cbfca03f74bcc98795f5887579473457b8
parent722ace9dfb73a62bf78c2db619795cfc128fef5a (diff)
downloadlinux-stericsson-cac4bcbce0e800f2219a27b66aaeb4a33f2e3dbc.tar.gz
[MIPS] Print more information if we're struck by a machine check exception.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--arch/mips/kernel/traps.c19
1 files changed, 17 insertions, 2 deletions
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 35cb08da3820..a7564b08eb4d 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -819,15 +819,30 @@ asmlinkage void do_watch(struct pt_regs *regs)
asmlinkage void do_mcheck(struct pt_regs *regs)
{
+ const int field = 2 * sizeof(unsigned long);
+ int multi_match = regs->cp0_status & ST0_TS;
+
show_regs(regs);
- dump_tlb_all();
+
+ if (multi_match) {
+ printk("Index : %0x\n", read_c0_index());
+ printk("Pagemask: %0x\n", read_c0_pagemask());
+ printk("EntryHi : %0*lx\n", field, read_c0_entryhi());
+ printk("EntryLo0: %0*lx\n", field, read_c0_entrylo0());
+ printk("EntryLo1: %0*lx\n", field, read_c0_entrylo1());
+ printk("\n");
+ dump_tlb_all();
+ }
+
+ show_code((unsigned int *) regs->cp0_epc);
+
/*
* Some chips may have other causes of machine check (e.g. SB1
* graduation timer)
*/
panic("Caught Machine Check exception - %scaused by multiple "
"matching entries in the TLB.",
- (regs->cp0_status & ST0_TS) ? "" : "not ");
+ (multi_match) ? "" : "not ");
}
asmlinkage void do_mt(struct pt_regs *regs)