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The hardware has added a new form of isolation in addition to just memory protection though, that the process alone can't use.
by justincormack 13y ago
The hardware has added a new form of isolation in addition to just memory protection though, that the process alone can't use.
- mwcampbell 13y agoThis isolation comes at the cost of dramatically decreased performance. http://dtrace.org/blogs/brendan/2013/01/11/virtualization-performance-zones-kvm-xen/ http://dtrace.org/blogs/brendan/2013/01/11/virtualization-pe... Hardware virtualization is best viewed as a hack for running multiple operating system kernels at the same time, where each kernel is designed to have a machine to itself. In any sanely designed system, this shouldn't be necessary; multiple processes under a single shared kernel should be good enough.
- korethr 13y agoWhile that is a nice ideal, reality tends to start creeping in eventually, and a hack or two become necessary so work can get done.