Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
[MIPS] Print more information if we're struck by a machine check exception. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
+17
-2
arch/mips/kernel/traps.c
+17
-2
arch/mips/kernel/traps.c
···
819
820
asmlinkage void do_mcheck(struct pt_regs *regs)
821
{
822
show_regs(regs);
823
-
dump_tlb_all();
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/*
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* Some chips may have other causes of machine check (e.g. SB1
826
* graduation timer)
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*/
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panic("Caught Machine Check exception - %scaused by multiple "
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"matching entries in the TLB.",
830
-
(regs->cp0_status & ST0_TS) ? "" : "not ");
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}
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asmlinkage void do_mt(struct pt_regs *regs)
···
819
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asmlinkage void do_mcheck(struct pt_regs *regs)
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{
822
+
const int field = 2 * sizeof(unsigned long);
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+
int multi_match = regs->cp0_status & ST0_TS;
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+
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show_regs(regs);
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+
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+
if (multi_match) {
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+
printk("Index : %0x\n", read_c0_index());
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+
printk("Pagemask: %0x\n", read_c0_pagemask());
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+
printk("EntryHi : %0*lx\n", field, read_c0_entryhi());
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+
printk("EntryLo0: %0*lx\n", field, read_c0_entrylo0());
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+
printk("EntryLo1: %0*lx\n", field, read_c0_entrylo1());
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+
printk("\n");
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+
dump_tlb_all();
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+
}
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+
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+
show_code((unsigned int *) regs->cp0_epc);
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+
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/*
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* Some chips may have other causes of machine check (e.g. SB1
841
* graduation timer)
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*/
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panic("Caught Machine Check exception - %scaused by multiple "
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"matching entries in the TLB.",
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+
(multi_match) ? "" : "not ");
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}
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asmlinkage void do_mt(struct pt_regs *regs)