13th Generation Intel® Core™ Processor Datasheet, Volume 2 of 2
ID | Date | Version | Classification |
---|---|---|---|
764981 | 07/13/2023 | Public |
GFX_VTDBAR_MSB (GFXVTDBAR_MSB_0_2_0_PCI) – Offset CC
This is the base address for the Graphics VTD configuration space.
There is no physical memory within this 4KB window that can be addressed.
The 4KB reserved by this register does not alias to any PCI 2.3 compliant memory mapped space.
On reset, the GFX-VTD configuration space is disabled and must be enabled by writing a 1 to GFXVTDBAREN.
All the bits in this register are included in an SAI protection group for Intel TXT mode.
BIOS programs this register, after which the register cannot be altered.
Bit Range | Default | Access | Field Name and Description |
---|---|---|---|
31:0 | 0x0 | RW | GFX-VTD Base Address Upper DWORD (GFXVTDBAR) This field corresponds to bits 63 to 32 of the base address GFX-VTD configuration space. |