CP80617004119AES LBU3 Intel, CP80617004119AES LBU3 Datasheet - Page 291

• Manufacturer Part Number: CP80617004119AES LBU3
• Manufacturer: Intel

Specifications of CP80617004119AES LBU3

• Lead Free Status / RoHS Status: Compliant

Processor Configuration Registers
Datasheet
62:60
59:57
56:50
Bit
Access
RW
RO
RO
Default
Value
00h
0h
0h
IOTLB Invalidation Request Granularity (IIRG)
When requesting hardware to invalidate the IOTLB (by
setting the IVT field), software writes the requested
invalidation granularity through this IIRG field.
Following are the encodings for the IIRG field. 000:
Reserved.
001: Global invalidation request.
010: Domain-selective invalidation request. The target
domain-id must be specified in the DID field.
011: Domain-page-selective invalidation request. The
target address, mask and invalidation hint must be
specified in the Invalidate Address register, and the
domain-id must be provided in the DID field.
100 - 111: Reserved.
Hardware implementations may process an invalidation
request by performing invalidation at a coarser granularity
than requested. Hardware indicates completion of the
invalidation request by clearing the IVT field. At this time,
the granularity at which actual invalidation was performed
is reported through the IAIG field.
IOTLB Actual Invalidation Granularity (IAIG)
Hardware reports the granularity at which an invalidation
request was processed through this field at the time of
reporting invalidation completion (by clearing the IVT
field).
The following are the encodings for the IAIG field:
000: Reserved. This indicates hardware detected an
incorrect invalidation request and ignored the request.
Examples of incorrect invalidation requests include
detecting an unsupported address mask value in
Invalidate Address register for page-selective invalidation
requests.
001: Global Invalidation performed. This could be in
response to a global, domain-selective, domain-page-
selective, or device-page-selective invalidation request.
010: Domain-selective invalidation performed using the
domain-id specified by software in the DID field. This
could be in response to a domain-selective, domain-page-
selective, or device-page-selective invalidation request.
011: Domain-page-selective invalidation performed using
the address, mask and hint specified by software in the
Invalidate Address register and domain-id specified in DID
field. This can be in response to a domain-page-selective
or device-page-selective invalidation request.
100 - 111: Reserved.
Reserved
(Sheet 2 of 3)
Description
291