12th Generation Intel® Core™ Processor Datasheet Volume 2 of 2
ID | Date | Version | Classification |
---|---|---|---|
767626 | 07/13/2023 | Public |
Invalidation Queue Address Register (IQA_REG_0_0_0_VTDBAR) – Offset 90
Register to configure the base address and size of the invalidation queue. This register is treated as RsvdZ by implementations reporting Queued Invalidation (QI) as not supported in the Extended Capability register.
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
63:39 | 0h | RO | Reserved |
38:12 | 0x0 | RW | Invalidation Queue Base Address (IQA) This field points to the base of 4KB aligned invalidation request queue. Hardware ignores and does not implement bits 63:HAW, where HAW is the host address width Reads of this field return the value that was last programmed to it. |
11:3 | 0h | RO | Reserved |
2:0 | 0x0 | RW | Queue Size (QS) This field specifies the size of the invalidation request queue. A value of X in this field indicates an invalidation request queue of (2^X) 4KB pages. The number of entries in the invalidation queue is 2^(X + 8). |