Intel E7-8891 v2 CM8063601377422 User Manual

Intel

®

 Xeon

® 

Processor E7-2800/4800/8800 v2 Product Family

409

Datasheet Volume Two: Functional Description, February 2014

Intel

®

VT-d Fault Status.

15:0

RW

0x0

domain_id:

Indicates the id of the domain whose context-entries needs to be selectively 

invalidated. S/W needs to program this for both domain and device selective 

invalidates. The processor ignores bits 15:8 since it supports only a 8 bit 

Domain ID. 

31:16

RV

-

Reserved.

15:8

ROS_V

0x0

fault_record_index:

This field is valid only when the Primary Fault Pending field is set. This field 

indicates the index (from base) of the fault recording register to which the 

first pending fault was recorded when the Primary Fault pending field was set 

by hardware.

7:7

RV

-

Reserved.

6:6

RW1CS

0x0

invalidation_timeout_error:

Hardware detected a Device-IOTLB invalidation completion timeout. At this 

time, a fault event may be generated based on the programming of the Fault 

Event Control register.

5:5

RW1CS

0x0

invalidation_completion_error:

Hardware received an unexpected or invalid Device-IOTLB invalidation 

completion. At this time, a fault event is generated based on the 

programming of the Fault Event Control register. 

4:4

RW1CS

0x0

invalidation_queue_error:

Hardware detected an error associated with the invalidation queue. For 

example, hardware detected an erroneous or unsupported Invalidation 

Descriptor in the Invalidation Queue. At this time, a fault event is generated 

based on the programming of the Fault Event Control register.

3:2

RV

-

Reserved.

1:1

ROS_V

0x0

primary_fault_pending:

This field indicates if there are one or more pending faults logged in the fault 

recording registers. Hardware computes this field as the logical OR of Fault 

(F) fields across all the fault recording registers of this DMA-remap hardware 

unit.0: No pending faults in any of the fault recording registers
1: One or more fault recording registers has pending faults. The fault 

recording index field is updated by hardware whenever this field is set by 

hardware. Also, depending on the programming of fault event control 

register, a fault event is generated when hardware sets this field.

0:0

RW1CS

0x0

primary_fault_overflow:

Hardware sets this bit to indicate overflow of fault recording registers