[Xen-devel] Re: pvclock in userland (reprise)

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 18/09/2009 08:29, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote:

>> I don't think mapping things into application address space is really
>> possible without guest kernel changes. The guest kernel owns and manages the
>> pte that you'd be overwriting. Just blatting the pte would not be good form.
> 
> Unless they sit in Xen's virtual space.

Oh yes, I remember we talked about that before. That is possible, but the
design fell down on other points. I think guest kernel involvement, even if
only as a kernel driver, should make this more tractable.

 -- Keir



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