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

From: David Vrabel
Date: Mon Dec 01 2014 - 06:32:29 EST

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?

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

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at