Intel 2ND GENERATION CORE PROCESSOR FAMILY DESKTOP - DATASHEET VOLUME 2 01-2011 Datasheet page 267

Processor Configuration Registers
B/D/F/Type:
Address Offset:
Reset Value:
Access:
Size:
BIOS Optimal Default
Bit
29
28
27
26
Datasheet, Volume 2
0/0/0/VC0PREMAP
18–1Bh
00000000h
WO, RO
32 bits
000000h
Reset RST/
Attr
Value PWR
RO 0b Uncore
RO 0b Uncore
RO 0b Uncore
WO 0b Uncore
Description
Set Fault Log (SFL)
This field is valid only for implementations supporting advanced
fault logging.
Software sets this field to request hardware to set/update the
fault-log pointer used by hardware. The fault-log pointer is
specified through Advanced Fault Log register.
Hardware reports the status of the 'Set Fault Log' operation
through the FLS field in the Global Status register.
The fault log pointer must be set before enabling advanced fault
logging (through EAFL field). Once advanced fault logging is
enabled, the fault log pointer may be updated through this field
while DMA remapping is active.
Clearing this bit has no effect. The value returned on read of this
field is undefined.
Enable Advanced Fault Logging (EAFL)
This field is valid only for implementations supporting advanced
fault logging.
Software writes to this field to request hardware to enable or
disable advanced fault logging:
0 = Disable advanced fault logging. In this case, translation faults
are reported through the Fault Recording registers.
1 = Enable use of memory-resident fault log. When enabled,
translation faults are recorded in the memory-resident log.
The fault log pointer must be set in hardware (through the
SFL field) before enabling advanced fault logging. Hardware
reports the status of the advanced fault logging enable
operation through the AFLS field in the Global Status register.
The value returned on read of this field is undefined.
Write Buffer Flush (WBF)
This bit is valid only for implementations requiring write buffer
flushing.
Software sets this field to request that hardware flush the Root-
Complex internal write buffers. This is done to ensure any updates
to the memory-resident remapping structures are not held in any
internal write posting buffers.
Hardware reports the status of the write buffer flushing operation
through the WBFS field in the Global Status register.
Clearing this bit has no effect. The value returned on a read of this
field is undefined.
Queued Invalidation Enable (QIE)
This field is valid only for implementations supporting queued
invalidations.
Software writes to this field to enable or disable queued
invalidations.
0 = Disable queued invalidations.
1 = Enable use of queued invalidations.
Hardware reports the status of queued invalidation enable
operation through QIES field in the Global Status register.
The value returned on a read of this field is undefined.
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