Re: Virtual Machines, JVM in kernel, hot-swapped kernel
H. Peter Anvin (hpa@transmeta.com)
24 Aug 1998 11:05:50 GMT
Followup to: <19980822152913.18494@lucifer.guardian.no>
By author: Alexander Kjeldaas <astor@guardian.no>
In newsgroup: linux.dev.kernel
>
> You don't want a VM in the kernel, but you might want a system level
> VM - a single VM used by all java-programs what will do caching and
> optimalization etc. Other than that, it is interesting to see if
> there are any new services needed by a VM that the kernel should
> provide. I know of one such service: user-level exceptions. Being
> able to handle a memory protection exception without the
> user->kernel->user context switches makes certain GC/VM-tricks much
> less expensive.
>
Hmm... I don't know if you can do that and still maintain OS
security; anyone remember the "sliding password" security hole?
-hpa
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