diff options
Diffstat (limited to 'docs/memory.txt')
| -rw-r--r-- | docs/memory.txt | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/docs/memory.txt b/docs/memory.txt index 5bbee8e85d..feb9fe90d7 100644 --- a/docs/memory.txt +++ b/docs/memory.txt @@ -15,10 +15,13 @@ The memory model provides support for - setting up coalesced memory for kvm - setting up ioeventfd regions for kvm -Memory is modelled as a tree (really acyclic graph) of MemoryRegion objects. -The root of the tree is memory as seen from the CPU's viewpoint (the system -bus). Nodes in the tree represent other buses, memory controllers, and -memory regions that have been rerouted. Leaves are RAM and MMIO regions. +Memory is modelled as an acyclic graph of MemoryRegion objects. Sinks +(leaves) are RAM and MMIO regions, while other nodes represent +buses, memory controllers, and memory regions that have been rerouted. + +In addition to MemoryRegion objects, the memory API provides AddressSpace +objects for every root and possibly for intermediate MemoryRegions too. +These represent memory as seen from the CPU or a device's viewpoint. Types of regions ---------------- |