SIGNAL_REG_VALUE - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// ntddk.h
typedef struct _SIGNAL_REG_VALUE {
UINT8 RegName[WCS_RAS_REGISTER_NAME_MAX_LENGTH];
UINT32 MsrAddr;
UINT64 Value;
} SIGNAL_REG_VALUE, *PSIGNAL_REG_VALUE;
View the official Windows Driver Kit DDI referenceNo description available.
The SIGNAL_REG_VALUE structure represents a RAS (Reliability, Availability, and Serviceability) signal register entry that contains register name, MSR address, and value information.
RegNameA UINT8 array that contains the name of the RAS register. The maximum length is defined by WCS_RAS_REGISTER_NAME_MAX_LENGTH.
MsrAddrA UINT32 value that specifies the Model Specific Register (MSR) address for this RAS signal register.
ValueA UINT64 value that contains the current value stored in the RAS signal register.
This structure is used as part of the EFI ACPI RAS Signal Table for hardware error reporting and signaling mechanisms.
It's used as an array element within the EFI_ACPI_RAS_SIGNAL_TABLE structure. Each entry represents a specific RAS signal register that can be monitored for hardware error conditions.
This structure is primarily used by the Windows Hardware Error Architecture (WHEA) subsystem for logging RAS table entries through ETW (Event Tracing for Windows) events. The structure allows the system to track and report on specific hardware registers that are relevant for reliability and error detection.
When multiple SIGNAL_REG_VALUE entries need to be logged, they may be split across multiple ETW events if the total size exceeds the maximum event size limit.