Datasheet

Processor Integrated I/O (IIO) Configuration Registers
178 Datasheet, Volume 2
3.3.3.33 VTUNCERRPTR—Intel
®
VT Uncorrectable Error Pointer Register
3.3.3.34 IIOMISCCTRL—IIO MISC Control Register
VTUNCERRPTR
Bus: 0 Device: 5 Function: 0 Offset: 1B4
Bit Attr
Reset
Value
Description
7:5 RV 0h Reserved
4:0 ROS-V 00h
Intel VT Uncorrectable First Error Pointer
This field points to which of the unmasked uncorrectable errors happened first.
This field is only valid when the corresponding error is unmasked and the status
bit is set and this field is rearmed to load again when the status bit indicated to by
this pointer is cleared by software from 1 to 0.
A value of 0h corresponds to bit 0 in VTUNCERRSTS register, a value of 1h
corresponds to bit 1, and so forth.
IIOMISCCTRL
Bus: 0 Device: 5 Function: 0 Offset: 1C0
Bit Attr
Reset
Value
Description
63:42 RV 0h Reserved
41 RW 0b
Enable Poison Message Specification Behavior
In the processor, a received poison packet is treated as a Fatal error if its severity
bit is set, but treated as correctable if the severity bit is cleared (and logged in
both the UNCERRSTS register and the Advisory Non-Fatal Error bit in the
CORERRSTS register).
In the processor, a POISFEN bit forces the poison error to be logged as an
Advisory Non-Fatal error. When this bit is set, the poison severity bit can force
Fatal behavior regardless of POISFEN. Generally however, MCA needs to have
priority over AER drivers, so this bit default is 0. The PCIe specification requires
this bit to be 0.
When this bit is clear:
sev pfen Error
0 0 non-fatal
0 1 correctable
1 0 fatal
1 1 correctable
When this bit is set:
sev pfen Error
0 0 non-fatal
0 1 correctable
1 0 fatal
11 fatal
40 RV 0h Reserved
39 RW 0b
Disable New APIC Ordering
When this bit is set, behavior returns to the original behavior.
38 RWS-O 0b UNIPHY Enable Power Down
37 RW 0b
Poison Forwarding Enable
This bit enables poisoned data received inbound (either inbound posted data or
completions for outbound reads that have poisoned data) to be forwarded to the
destination (DRAM or Cache or PCIe Peer).
0 = Poison indication is not forwarded with the data
(this may result in silent corruption if AER poison reporting is disabled).
1 = Poison indication is forwarded with the data
(this may result in a conflict with MCA poison reporting if AER poison
reporting is enabled)