Re: [PATCH] paravirt.h

From: Alan Cox
Date: Tue Aug 22 2006 - 17:13:46 EST

Ar Maw, 2006-08-22 am 12:17 -0700, ysgrifennodd Zachary Amsden:
> Possibly an issue, but why would you ever want stacked paravirt-ops?
> You're only talking to the hypervisor directly above you, and there is
> only one of those.

Thankfully right now I can't think of a reason other than debugging when
using hardware VMX

> > - If we boot patch inline code to get performance natively its almost
> > impossible to then revert that.

> You can patch back over it. I've already implemented the locking and
> repatching bits for VMI.

Ok that bit seemed pretty scary because you have to halt all the
processors in a known state (which probably means in an IPI handler)
before you patch. If you have code thats great.


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