Re: [Xen-devel] [PATCH RFC V3 4/5] xen, libxc: Request page fault injection via libxc

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Andrei LUTAS writes ("Re: [Xen-devel] [PATCH RFC V3 4/5] xen, libxc: Request 
page fault injection via libxc"):
> The logic with the #PF injection goes like this:

Sorry, I didn't see this message when I sent my last one asking about
the motivation.

> - The memory introspection engine wants to inspect (for whatever reason) a
>    virtual page X insidevirtual address space Y(inside user-mode, although
>    with proper knowledge about the guest kernel,one can also inject #PF 
> inside
>    kernel-mode on Windows - proper IRQL, working set trim inactive, etc.)

I don't understand why this needs additional hypervisor code.  Can
this not be done by negotiating with the paging daemon ?

Ian.

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