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

On Mon, Dec 01, 2014 at 01:54:11PM +0100, Juergen Gross wrote:
> 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!

I am happy.

> Juergen

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