Add definitions to clarify GPU virtual memory.
Suggested-by: Peter Maucher <bellosilicio@xxxxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
Documentation/gpu/amdgpu/amdgpu-glossary.rst | 21 ++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/Documentation/gpu/amdgpu/amdgpu-glossary.rst b/Documentation/gpu/amdgpu/amdgpu-glossary.rst
index 326896e9800d..944ebcef1d28 100644
--- a/Documentation/gpu/amdgpu/amdgpu-glossary.rst
+++ b/Documentation/gpu/amdgpu/amdgpu-glossary.rst
@@ -30,12 +30,33 @@ we have a dedicated glossary for Display Core at
EOP
End Of Pipe/Pipeline
+ GART
+ Graphics Address Remapping Table. This is a GPUVM page table that maps
+ system resources (memory or MMIO space) into the GPU's address space so
+ the GPU can access them. In the GPU kernel driver's virtual address
+ space is referred to as the GART for legacy reasons going back to AGP
+ and the early GPU remapping hardware.
+
GC
Graphics and Compute
GMC
Graphic Memory Controller
+ GPUVM
+ GPU Virtual Memory. The GPU supports multiple virtual address spaces
+ that can be in flight at any given time. These allow the GPU to remap
+ VRAM and system resources into GPU virtual address spaces for use by
+ the GPU kernel driver and applications using the GPU. These provide
+ memory protection for different applications using the GPU.
+
+ GTT
+ Graphics Translation Tables. This is a memory pool managed through TTM
+ which provides access to system resources (memory or MMIO space) for
+ use by the GPU. These addresses can be mapped into the GART GPUVM page
+ table for use by the kernel driver or into per process GPUVM page tables
+ for application usage.
+
IH
Interrupt Handler
--
2.38.1
