Rtaddr_Reg-Root-Entry Table Address Register - Intel 2ND GENERATION CORE PROCESSOR FAMILY DESKTOP - DATASHEET VOLUME 2 01-2011 Datasheet

B/D/F/Type:
Address Offset:
Reset Value:
Access:
Size:
BIOS Optimal Default
Bit
24
23
22:0
2.21.6 RTADDR_REG—Root-Entry Table Address Register
This register provides the base address of root-entry table.
B/D/F/Type:
Address Offset:
Reset Value:
Access:
Size:
BIOS Optimal Default
Bit
63:39
38:12
11:0
270
0/0/0/VC0PREMAP
1C–1Fh
00000000h
RO, RO-V
32 bits
000000h
Reset RST/
Attr
Value PWR
RO-V 0b Uncore
RO-V 0b Uncore
RO 0h
0/0/0/VC0PREMAP
20–27h
0000000000000000h
RW
64 bits
0000000000h
Reset RST/
Attr
Value PWR
RO 0h
RW 0000000h Uncore
RO 0h
Processor Configuration Registers
Description
Interrupt Remapping Table Pointer Status (IRTPS)
This field indicates the status of the interrupt remapping table
pointer in hardware.
This field is cleared by hardware when software sets the SIRTP field
in the Global Command register. This field is Set by hardware when
hardware completes the set interrupt remap table pointer
operation using the value provided in the Interrupt Remapping
Table Address register.
Compatibility Format Interrupt Status (CFIS)
This field indicates the status of Compatibility format interrupts on
Intel 64 implementations supporting interrupt-remapping. The
value reported in this field is applicable only when interrupt-
remapping is enabled and Extended Interrupt Mode (x2APIC mode)
is not enabled.
0 = Compatibility format interrupts are blocked.
1 = Compatibility format interrupts are processed as pass-through
(bypassing interrupt remapping).
Reserved
Description
Reserved
Root Table Address (RTA)
This register points to base of page aligned, 4 KB-sized root-entry
table in system memory. Hardware ignores and not implements
bits 63:HAW, where HAW is the host address width.
Software specifies the base address of the root-entry table through
this register, and programs it in hardware through the SRTP field in
the Global Command register.
Reads of this register returns value that was last programmed to it.
Reserved
Datasheet, Volume 2