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SubjectRe: [PATCH 0/9] namespaces: Introduction
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Pavel Machek <pavel@ucw.cz> writes:

> Well, if pid #1 virtualization is only needed for pstree, we may want
> to fix pstree instead :-).

One thing that is not clear is if isolation by permission checks is any
easier to implement than isolation with a namespace.

Isolation at permission checks may actually be more expensive in terms
of execution time, and maintenance.

Eric
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