Re: [Xen-devel] Future support of 5-level paging in Xen

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 09.12.16 at 11:07, <JGross@xxxxxxxx> wrote:
> On 09/12/16 10:59, Jan Beulich wrote:
>> Right; a first question though would be whether 5-level support
>> would be a build time selection (just like 32-bit PAE was long ago),
>> or runtime determined.
> 
> Guessing you mean Linux kernel here: the intention is to have one kernel
> being capable to use 4- or 5-level paging in the end. Current patches
> don't support this, they are using a Kconfig option to select the number
> of page table levels.

Good to know, but the reference was really to Xen itself.

>>> However, a big question is whether any of this effort is worth doing, in
>>> the light of PVH.
>> 
>> Much depends, I think, on how quickly this becomes a fully
>> supported feature.
> 
> "this" refers to PVH, I guess?

Yes.

Jan


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