Re: [PATCH V4 00/10] xen: Switch to virtual mapped linear p2m list

[Juergen Gross]

On 12/01/2014 12:31 PM, David Vrabel wrote:
> On 28/11/14 10:53, Juergen Gross wrote:
> > Paravirtualized kernels running on Xen use a three level tree for
> > translation of guest specific physical addresses to machine global
> > addresses. This p2m tree is used for construction of page table
> > entries, so the p2m tree walk is performance critical.
> >
> > By using a linear virtual mapped p2m list accesses to p2m elements
> > can be sped up while even simplifying code. To achieve this goal
> > some p2m related initializations have to be performed later in the
> > boot process, as the final p2m list can be set up only after basic
> > memory management functions are available.
>
> What are the results of the testing I asked for?

You asked for those replying to the patch introducing the linear
mapping. So I added the description of the tested scenarios in the
patch description of that patch.

> If Konrad or Boris are happy with this series I think it can go into 3.19.

Great, thanks!


Juergen

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