Intel G550T CM8062301002309 User Manual

224

Datasheet, Volume 2

7

RO

0b

Uncore

Caching Mode (CM)
0 = Not-present and erroneous entries are not cached in any of 

the remapping caches. Invalidations are not required for 

modifications to individual not present or invalid entries. 

However, any modifications that result in decreasing the 

effective permissions or partial permission increases require 

invalidations for them to be effective.

1 = Not-present and erroneous mappings may be cached in the 

remapping caches. Any software updates to the remapping 

structures (including updates to "not-present" or erroneous 

entries) require explicit invalidation.

Hardware implementations of this architecture must support a 

value of 0 in this field.

6

RO

1b

Uncore

Protected High-Memory Region (PHMR)
0 = Protected high-memory region is Not supported.

1 = Protected high-memory region is supported.

5

RO

1b

Uncore

Protected Low-Memory Region (PLMR)
0 = Protected low-memory region is Not supported.

1 = Protected low-memory region is supported.

4

RO

0b

Uncore

Required Write-Buffer Flushing (RWBF)
0 = No write-buffer flushing is needed to ensure changes to 

memory-resident structures are visible to hardware.

1 = Software must explicitly flush the write buffers to ensure 

updates made to memory-resident remapping structures are 

visible to hardware. 

3

RO

0b

Uncore

Advanced Fault Logging (AFL)
0 = Advanced fault logging is not supported. Only primary fault 

logging is supported.

1 = Advanced fault logging is supported.

2:0

RO

010b

Uncore

Number of domains supported (ND)
000 =  Hardware supports 4-bit domain-ids with support for up to 

16 domains.

001 =  Hardware supports 6-bit domain-ids with support for up to 

64 domains.

010 =  Hardware supports 8-bit domain-ids with support for up to 

256 domains.

011 =  Hardware supports 10-bit domain-ids with support for up to 

1024 domains.

100 =  Hardware supports 12-bit domain-ids with support for up to 

4K domains.

100 =  Hardware supports 14-bit domain-ids with support for up to 

16K domains.

110 =  Hardware supports 16-bit domain-ids with support for up to 

64K domains.

111 =  Reserved.