source "drivers/acpi/apei/Kconfig"
+config ACPI_EXTLOG
+ tristate "Extended Error Log support"
+ depends on X86_MCE && X86_LOCAL_APIC
+ select EFI
+ select UEFI_CPER
+ default n
+ help
+ Certain usages such as Predictive Failure Analysis (PFA) require
+ more information about the error than what can be described in
+ processor machine check banks. Most server processors log
+ additional information about the error in processor uncore
+ registers. Since the addresses and layout of these registers vary
+ widely from one processor to another, system software cannot
+ readily make use of them. To complicate matters further, some of
+ the additional error information cannot be constructed without
+ detailed knowledge about platform topology.
+
+ Enhanced MCA Logging allows firmware to provide additional error
+ information to system software, synchronous with MCE or CMCI. This
+ driver adds support for that functionality.
+
endif # ACPI