Class VMSSAddressSpace

source code

Support ESX .vmsn file format.

The VMSN file format contains a set of metadata in the form of tags, grouped
by groups at the header. There is a lot of metadata but the most interesting
metadata for us is the metadata in the "memory" group.

The file includes a "memory.Memory" data blob which contains the entire
memory snapshot of the running machine. The memory blob is serialized into
the file as a single large blob but contains physical memory runs stored
back to back inside it.

The following tags are used:

- memory.regionsCount: Stores the total number of regions.

- memory.regionPPN: In an array of physical addresses for each physical
  memory regions in the virtual machine (in pages).

- memory.regionSize: Is the size of each physical memory region (in pages).

- memory.regionPageNum: Is the offset into the memory.Memory blob for each
  region (in pages). This may be omitted if there is only one region.

Base is the AS we will be stacking on top of, opts are options which
we may use.

Args:
  base: A base address space to stack on top of (i.e. delegate to it for
      satisfying read requests).

  session: An optional session object.

  profile: An optional profile to use for parsing the address space
      (e.g. needed for hibernation, crash etc.)