AC82G41SLGQ3 Datasheet, PDF (429/604 Pages) Intel Corporation – Intel® 4 Series Chipset Family

Intel^® Virtualization Technology for Directed I/O Registers (D0:F0) (Intel^® 82Q45 GMCH Only)
Bit
Access
Default
Value
RST/PWR
Description
6
RO
5
RO
4
RO
3
RO
2:0
RO
1b
1b
1b
0b
010b
Core
Core
Core
Core
Core
Protected High-Memory Region (PHMR):
0 = Indicates protected high-memory region not
supported.
1 = Indicates protected high-memory region is supported.
DMA-remapping hardware implementations on Intel TXT
platforms supporting main memory above 4 GB are
required to support protected high-memory region.
Protected Low-Memory Region (PLMR):
0 = Indicates protected low-memory region not supported.
1 = Indicates protected low-memory region is supported.
DMA-remapping hardware implementations on Intel TXT
platforms are required to support protected low-memory
region.
Required Write-Buffer Flushing (RWBF):
0 = Indicates no write-buffer flushing needed to ensure
changes to memory-resident structures are visible to
hardware.
1 = Indicates software must explicitly flush the write
buffers (through the Global Command register) to
ensure updates made to memory-resident DMA-
remapping structures are visible to hardware.
Advanced Fault Logging (AFL):
0 = Indicates advanced fault logging not supported. Only
primary fault logging is supported.
1 = Indicates advanced fault logging is supported.
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 4 KB domains.
100 = Hardware supports 14-bit domain-IDs with support
for up to 16 KB domains.
110 = Hardware supports 16-bit domain-IDs with support
for up to 64 KB domains.
111 = Reserved.
Datasheet
429