powerpc/book3s: Flush SLB/TLBs if we get SLB/TLB machine check errors on power8.

This patch handles the memory errors on power8. If we get a machine check
exception due to SLB or TLB errors, then flush SLBs/TLBs and reload SLBs to
recover.

Signed-off-by: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

diff --git a/arch/powerpc/include/asm/mce.h b/arch/powerpc/include/asm/mce.h
index 8157d4e..e3ffa82 100644 (file)
--- a/arch/powerpc/include/asm/mce.h
+++ b/arch/powerpc/include/asm/mce.h
@@ -64,4 +64,7 @@
                                         P7_DSISR_MC_SLB_MULTIHIT | \
                                         P7_DSISR_MC_SLB_MULTIHIT_PARITY)
 
+#define P8_DSISR_MC_SLB_ERRORS         (P7_DSISR_MC_SLB_ERRORS | \
+                                        P8_DSISR_MC_ERAT_MULTIHIT_SEC)
+
 #endif /* __ASM_PPC64_MCE_H__ */

diff --cc arch/powerpc/kernel/cputable.c
Simple merge

diff --cc arch/powerpc/kernel/mce_power.c
Simple merge