16-26 Vol. 3B
INTERPRETING MACHINE-CHECK ERROR CODES
16.9.4 M2M Machine Check Errors
MC error codes associated with M2M are reported in the MSRs IA32_MC7_STATUS, IA32_MC8_STATUS. The
supported error codes follow the architectural MCACOD definition type 1MMMCCCC (see Chapter 15, “Machine-
Check Architecture,”).
Table 16-30. M2M MC Error Codes for IA32_MCi_STATUS (i= 7-8)
16.10 INCREMENTAL
DECODING
INFORMATION: PROCESSOR FAMILY 0FH
MACHINE ERROR CODES FOR MACHINE CHECK
Table 16-31 provides information for interpreting additional family 0FH model-specific fields for external bus errors.
These errors are reported in the IA32_MCi_STATUS MSRs. They are reported architecturally) as compound errors
with a general form of 0000 1PPT RRRR IILL in the MCA error code field. See Chapter 15 for information on the
interpretation of compound error codes.
Type
Bit No. Bit Function
Bit Description
MCA error codes
1
NOTES:
1. These fields are architecturally defined. Refer to Chapter 15, “Machine-Check Architecture,” for more information.
0-15
MCACOD
Compound error format: 0000 0000 1MMM CCCC
Model specific
errors
16
MscodDataRdErr
Logged an MC read data error
17
Reserved
Reserved
18
MscodPtlWrErr
Logged an MC partial write data error
19
MscodFullWrErr
Logged a full write data error
20
MscodBgfErr
Logged an M2M clock-domain-crossing buffer (BGF) error
21
MscodTimeOut
Logged an M2M time out
22
MscodParErr
Logged an M2M tracker parity error
23
MscodBucket1Err
Logged a fatal Bucket1 error
31-24
Reserved
Reserved
36-32
Other info
MC logs the first error device. This is an encoded 5-bit value of the device.
37
Reserved
Reserved
56-38
See Chapter 15, “Machine-Check Architecture,”
Status register
validity indicators
1
57-63
Table 16-31. Incremental Decoding Information: Processor Family 0FH Machine Error Codes For Machine Check
Type
Bit No. Bit Function
Bit Description
MCA error
codes
1
0-15
Model-specific
error codes
16
FSB address parity
Address parity error detected:
1 = Address parity error detected
0 = No address parity error
17
Response hard fail
Hardware failure detected on response
18
Response parity
Parity error detected on response