Re: [Xen-devel] [PATCH 0/2] xen: Allow xen tools to run in guest using 64K page granularity

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Mon, 2015-07-20 at 14:57 +0100, Julien Grall wrote:
> Hi Ian,

This is a tools backport, so needs to be Ian J not me.

> On 07/07/15 16:19, Ian Campbell wrote:
> > On Tue, 2015-07-07 at 13:20 +0100, Julien Grall wrote:
> >> Hi Ian,
> >>
> >> On 25/06/15 12:23, Ian Campbell wrote:
> >>> On Thu, 2015-06-25 at 11:21 +0100, Wei Liu wrote:
> >>>> On Mon, May 11, 2015 at 12:55:34PM +0100, Julien Grall wrote:
> >>>>> Hi all,
> >>>>>
> >>>>> This small series are the only changes required in Xen in order to run 
> >>>>> a guest
> >>>>> using 64K page granularity on top of an unmodified Xen.
> >>>>>
> >>>>> I'd like feedback from maintainers tools to know if it might be worth to
> >>>>> introduce a function xc_pagesize() replicating the behavior of 
> >>>>> getpagesize()
> >>>>> for Xen.
> >>>>>
> >>>>
> >>>> Can we start with documenting the ABI (?) for communicating between
> >>>> guests with different page sizes?
> >>>
> >>> We should certainly make it clearer what things are in terms of "Xen ABI
> >>> page size" vs "the guest's page size" and other things.
> >>>
> >>> I think we can commit these two without that though?
> >>
> >> Ping? It would be nice to have these 2 patches for Xen 4.5. This is the
> >> only patch necessary in Xen in order to run OS using 64KB page
> >> granularity as DOM0.
> > 
> > Wei acked the patch at "Thu, 25 Jun 2015 13:58:26 +0100" after the
> > discussion around the docs which concluded at "Thu, 25 Jun 2015 12:45:49
> > +0100", IOW I have assumed this Ack to mean he is ok with them going in
> > with a docs patch to follow.
> 
> Would it be possible to backport those 2 patches on Xen 4.5 (I don't
> think it worth to do it for Xen 4.4)? It's the only changes to allow
> Linux using 64KB page granularity running on Xen 4.5.

On the face of it sounds reasonable to me.




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