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powerpc/64s/powernv: machine check dump SLB contents

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Re-use the code introduced in pseries to save and dump the contents
of the SLB in the case of an SLB involved machine check exception.

This patch also avoids allocating the SLB save array on pseries radix.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190802105709.27696-9-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin
2019-08-02 20:56:33 +10:00
committed by Michael Ellerman
parent 0b66370c61
commit 7290f3b3d3
4 changed files with 31 additions and 10 deletions
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6
arch/powerpc/kernel/mce.c
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@@ -511,6 +511,12 @@ void machine_check_print_event_info(struct machine_check_event *evt,
subtype = evt->error_class < ARRAY_SIZE(mc_error_class) ?
mc_error_class[evt->error_class] : "Unknown";
printk("%sMCE: CPU%d: %s\n", level, evt->cpu, subtype);
#ifdef CONFIG_PPC_BOOK3S_64
/* Display faulty slb contents for SLB errors. */
if (evt->error_type == MCE_ERROR_TYPE_SLB)
slb_dump_contents(local_paca->mce_faulty_slbs);
#endif
}
EXPORT_SYMBOL_GPL(machine_check_print_event_info);