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powerpc/pseries: Display machine check error details.

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Extract the MCE error details from RTAS extended log and display it to
console.

With this patch you should now see mce logs like below:

[  142.371818] Severe Machine check interrupt [Recovered]
[  142.371822]   NIP [d00000000ca301b8]: init_module+0x1b8/0x338 [bork_kernel]
[  142.371822]   Initiator: CPU
[  142.371823]   Error type: SLB [Multihit]
[  142.371824]     Effective address: d00000000ca70000

Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Mahesh Salgaonkar
2018-09-11 19:57:07 +05:30
committed by Michael Ellerman
parent a43c159042
commit 8f0b80561f
2 changed files with 138 additions and 0 deletions
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5
arch/powerpc/include/asm/rtas.h
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@@ -197,6 +197,11 @@ static inline uint8_t rtas_error_extended(const struct rtas_error_log *elog)
return (elog->byte1 & 0x04) >> 2;
}
static inline uint8_t rtas_error_initiator(const struct rtas_error_log *elog)
{
return (elog->byte2 & 0xf0) >> 4;
}
#define rtas_error_type(x) ((x)->byte3)
static inline