diff options
Diffstat (limited to 'arch/powerpc/kernel/traps.c')
| -rw-r--r-- | arch/powerpc/kernel/traps.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c index f19d9777d3c1..4e5908264d1a 100644 --- a/arch/powerpc/kernel/traps.c +++ b/arch/powerpc/kernel/traps.c @@ -457,7 +457,14 @@ int machine_check_e500mc(struct pt_regs *regs) if (reason & MCSR_DCPERR_MC) { printk("Data Cache Parity Error\n"); - recoverable = 0; + + /* + * In write shadow mode we auto-recover from the error, but it + * may still get logged and cause a machine check. We should + * only treat the non-write shadow case as non-recoverable. + */ + if (!(mfspr(SPRN_L1CSR2) & L1CSR2_DCWS)) + recoverable = 0; } if (reason & MCSR_L2MMU_MHIT) { |