Vol. 3B 16-23

INTERPRETING MACHINE-CHECK ERROR CODES

16.9.2   Interconnect Machine Check Errors

MC error codes associated with the link interconnect agents are reported in the MSRs IA32_MC5_STATUS, 
IA32_MC12_STATUS, IA32_MC19_STATUS. The supported error codes follow the architectural MCACOD definition 
type 

1PPTRRRRIILL (see Chapter 15, “Machine-Check Architecture”).

Table 16-28 lists model-specific fields to interpret error codes applicable to IA32_MCi_STATUS, i= 5, 12, 19.

49h - MCA_SVID_PKGC_CONFIG_FAILED
4Ah - MCA_SVID_PKGC_REQUEST_FAILED
4Bh - MCA_SVID_IMON_REQUEST_FAILED
4Ch - MCA_SVID_ALERT_REQUEST_FAILED
4Dh - MCA_SVID_MCP_VP_ABSENT_OR_RAMP_ERROR
4Eh - MCA_SVID_UNEXPECTED_MCP_VP_DETECTED
51h - MCA_FIVR_CATAS_OVERVOL_FAULT
52h - MCA_FIVR_CATAS_OVERCUR_FAULT
58h - MCA_WATCHDG_TIMEOUT_PKGC_SLAVE
59h - MCA_WATCHDG_TIMEOUT_PKGC_MASTER
5Ah - MCA_WATCHDG_TIMEOUT_PKGS_MASTER
61h - MCA_PKGS_CPD_UNPCD_TIMEOUT
63h - MCA_PKGS_INVALID_REQ_PCH
64h - MCA_PKGS_INVALID_REQ_INTERNAL
65h - MCA_PKGS_INVALID_RSP_INTERNAL
6Bh - MCA_PKGS_SMBUS_VPP_PAUSE_TIMEOUT
81h - MC_RECOVERABLE_DIE_THERMAL_TOO_HOT

52-32

Reserved

Reserved

54-53

CORR_ERR_STATUS

Reserved

56-55

Reserved

Reserved

Status register 

validity indicators

1

 

57-63

NOTES:

1. These fields are architecturally defined. Refer to Chapter 15, “Machine-Check Architecture,” for more information.
2. The internal error codes may be model-specific.

Type

Bit No.  Bit Function 

Bit Description