Re: [PATCH 0/7] KVM: Kernel-based Virtual Machine

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Arnd Bergmann wrote:
On Sunday 22 October 2006 19:01, Avi Kivity wrote:
While we don't have it yet, we're thinking about adding a sputop
or something similar that shows the utilization of spus. You don't
need that one, since get exactly that with the regular top, but you
might want to have a tool that prints statistics about how often
your guests drop out of the virtualisation mode, or the number
of interrupts delivered to them.

We have a debugfs interface and a kvm_stat script which shows exactly
that (including a breakdown of the reasons for the exit).
Ok, good. But with your own file system, you wouldn't need debugfs
any more and have all information about a guest in one place.
One last thing: permissions. The /dev/kvm model allows permissions to
be controlled using standard unix access methods. How do you control
access to spufs?
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

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