Re: [Xen-devel] [for-4.10] Re: [PATCH v2] tools/libxl: mark special pages as reserved in e820 map for PVH

[Julien Grall <julien.grall@xxxxxxxxxx>]

Hi Juergen,

On 12/05/2017 04:19 PM, Juergen Gross wrote:
> On 05/12/17 16:23, Julien Grall wrote:
> > Hi Juergen,
> >
> > On 04/12/17 15:49, Juergen Gross wrote:
> > > On 21/11/17 12:06, Juergen Gross wrote:
> > > > The "special pages" for PVH guests include the frames for console and
> > > > Xenstore ring buffers. Those have to be marked as "Reserved" in the
> > > > guest's E820 map, as otherwise conflicts might arise later e.g. when
> > > > hotplugging memory into the guest.
> > > >
> > > > Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
> > > > ---
> > > > This is a bugfix for PVH guests. Please consider for 4.10.
> > > Ping?
> > I was waiting an ack from tools maintainers before looking for a release
> > perspective.
> >
> > I would recommend to tag your patch is 4.10 to help reviewers prioritize
> > review on your patch. I have done it now.
> >
> > I am looking at releasing Xen 4.10 in the next few days. Can you explain
> > the pros/cons of this patch?
> Pros: PVH guests with 4GB of memory or more will work. :-)
They never worked before? Or is it a regression? If it is a regression 
when did it appear?
> Cons: There is a more general solution (as Roger pointed out), but
>        this would require much more work.
Cheers,

--
Julien Grall

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