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Datasheet, Volume 2

321

Processor Configuration Registers 

This register provides the base address of root-entry table.

63:39

RO

0h

38:12

RW

0000000h

Uncore

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. 

11:0

RO

0h