CS 591 Virtualization
From TaylorGroves
Contents |
Notes
January 23, 2012
- Shadow paging covered briefly.
January 25, 2012
Paravirtualization vs Full virtualization
Discussing
- VMWare implemented binary translation whereas Intel/AMD were implementing a Trap and Emulate approach.
- There is still a concept of shadow state, where there is a shadow instruction stream. Changes in the instruction stream must be reflected in the system state.
- Figure 3 of the paper has more noticeable costs attributed virtualization (compared to figure 2) when involving I/O, devices, etc.
- Nested paging briefly covered in contrast to Shadow paging.
- Looked at some Palacios code.
- Was thinking about a "backwards" virtualization, where many small distributed VMM's run and coordinate to produce an abstraction of a larger, singular, virtual machine on-top.
- Read the DISCO paper for next class.
