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memory: correct documentation typos

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Noted by Drew Jones.

Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Avi Kivity 2011-08-08 19:58:50 +03:00 committed by Anthony Liguori
parent d0a9b5bc0a
commit 7075ba3097
1 changed files with 4 additions and 4 deletions
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8
docs/memory.txt
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@ -15,7 +15,7 @@ The memory model provides support for
- setting up coalesced memory for kvm - setting up coalesced memory for kvm
- setting up ioeventfd regions for kvm - setting up ioeventfd regions for kvm
Memory is modelled as an tree (really acyclic graph) of MemoryRegion objects. 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 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 bus). Nodes in the tree represent other buses, memory controllers, and
memory regions that have been rerouted. Leaves are RAM and MMIO regions. memory regions that have been rerouted. Leaves are RAM and MMIO regions.
@ -87,7 +87,7 @@ guest accesses an address:
descending priority order descending priority order
- if the address lies outside the region offset/size, the subregion is - if the address lies outside the region offset/size, the subregion is
discarded discarded
- if the subregion is a leaf (RAM or MMIO), the seach terminates - if the subregion is a leaf (RAM or MMIO), the search terminates
- if the subregion is a container, the same algorithm is used within the - if the subregion is a container, the same algorithm is used within the
subregion (after the address is adjusted by the subregion offset) subregion (after the address is adjusted by the subregion offset)
- if the subregion is an alias, the search is continues at the alias target - if the subregion is an alias, the search is continues at the alias target
@ -128,7 +128,7 @@ so-called PCI hole, that allows a 32-bit PCI bus to exist in a system with
4GB of memory. 4GB of memory.
The memory controller diverts addresses in the range 640K-768K to the PCI The memory controller diverts addresses in the range 640K-768K to the PCI
address space. This is modeled using the "vga-window" alias, mapped at a address space. This is modelled using the "vga-window" alias, mapped at a
higher priority so it obscures the RAM at the same addresses. The vga window higher priority so it obscures the RAM at the same addresses. The vga window
can be removed by programming the memory controller; this is modelled by can be removed by programming the memory controller; this is modelled by
removing the alias and exposing the RAM underneath. removing the alias and exposing the RAM underneath.
@ -164,7 +164,7 @@ various constraints can be supplied to control how these callbacks are called:
- .impl.min_access_size, .impl.max_access_size define the access sizes - .impl.min_access_size, .impl.max_access_size define the access sizes
(in bytes) supported by the *implementation*; other access sizes will be (in bytes) supported by the *implementation*; other access sizes will be
emulated using the ones available. For example a 4-byte write will be emulated using the ones available. For example a 4-byte write will be
emulated using four 1-byte write, is .impl.max_access_size = 1. emulated using four 1-byte write, if .impl.max_access_size = 1.
- .impl.valid specifies that the *implementation* only supports unaligned - .impl.valid specifies that the *implementation* only supports unaligned
accesses; unaligned accesses will be emulated by two aligned accesses. accesses; unaligned accesses will be emulated by two aligned accesses.
- .old_portio and .old_mmio can be used to ease porting from code using - .old_portio and .old_mmio can be used to ease porting from code using