Vol. 3B 16-7
INTERPRETING MACHINE-CHECK ERROR CODES
16.2.2.2 Processor Model Specific Error Code Field
Type C: Cache Bus Controller Error
16.3
INCREMENTAL DECODING INFORMATION: PROCESSOR FAMILY WITH
CPUID DISPLAYFAMILY_DISPLAYMODEL SIGNATURE 06_1AH, MACHINE
ERROR CODES FOR MACHINE CHECK
Table 16-8 through Table 16-12 provide information for interpreting additional model-specific fields for memory
controller errors relating to the processor family with CPUID DisplayFamily_DisplaySignature 06_1AH, which
supports Intel QuickPath Interconnect links. Incremental MC error codes related to the Intel QPI links are reported
in the register banks IA32_MC0 and IA32_MC1, incremental error codes for internal machine check is reported in
the register bank IA32_MC7, and incremental error codes for the memory controller unit is reported in the register
banks IA32_MC8.
Table 16-7. Type C Cache Bus Controller Error Codes
MC4_STATUS[31:16] (MSCE) Value
Error Description
0000_0000_0000_0001 0001H
Inclusion Error from Core 0
0000_0000_0000_0010 0002H
Inclusion Error from Core 1
0000_0000_0000_0011 0003H
Write Exclusive Error from Core 0
0000_0000_0000_0100 0004H
Write Exclusive Error from Core 1
0000_0000_0000_0101 0005H
Inclusion Error from FSB
0000_0000_0000_0110 0006H
SNP Stall Error from FSB
0000_0000_0000_0111 0007H
Write Stall Error from FSB
0000_0000_0000_1000 0008H
FSB Arb Timeout Error
0000_0000_0000_1010 000AH
Inclusion Error from Core 2
0000_0000_0000_1011 000BH
Write Exclusive Error from Core 2
0000_0010_0000_0000 0200H
Internal Timeout error
0000_0011_0000_0000 0300H
Internal Timeout Error
0000_0100_0000_0000 0400H
Intel® Cache Safe Technology Queue Full Error or Disabled-ways-in-a-set overflow
0000_0101_0000_0000 0500H
Quiet cycle Timeout Error (correctable)
1100_0000_0000_0010 C002H
Correctable ECC event on outgoing Core 0 data
1100_0000_0000_0100 C004H
Correctable ECC event on outgoing Core 1 data
1100_0000_0000_1000 C008H
Correctable ECC event on outgoing Core 2 data
1110_0000_0000_0010 E002H
Uncorrectable ECC error on outgoing Core 0 data
1110_0000_0000_0100 E004H
Uncorrectable ECC error on outgoing Core 1 data
1110_0000_0000_1000 E008H
Uncorrectable ECC error on outgoing Core 2 data
— all other encodings —
Reserved