Re: [Xen-devel] [XEN PATCH v1] libxl: Add DTB compatible list to config file

[Oleksandr Grytsov <al1img@xxxxxxxxx>]

On Fri, Oct 11, 2019 at 8:21 PM Stefano Stabellini
<sstabellini@xxxxxxxxxx> wrote:
>
> On Fri, 11 Oct 2019, Julien Grall wrote:
> > Hi,
> >
> > On 11/10/2019 16:23, Ian Jackson wrote:
> > > Oleksandr Grytsov writes ("[PATCH v1] libxl: Add DTB compatible list to
> > > config file"):
> > > > From: Oleksandr Grytsov <oleksandr_grytsov@xxxxxxxx>
> > > >
> > > > Some platforms need more compatible property values in device
> > > > tree root node in addition to "xen,xenvm-%d.%d" and "xen,xenvm"
> > > > values that are given by Xen by default.
> >
> > I am pretty sure I have seen this patch a few years ago, but I can't find it
> > in my inbox. What is the exact problem here?
> >
> > > > Specify in domain configuration file which values should be added
> > > > by providing "dtb_compatible" list of strings separated by comas.
> > >
> > > Hi, thanks.
> > >
> > > I don't have an opinion about the principle of this and would like to
> > > hear from ARM folks about that.
> > >
> > > Also, Stefano, Julien: should we be asking for a freeze exception for
> > > this for 4.13 ?
> >
> > I don't have enough context to understand the exact issue he is trying to
> > solve.
>
> Same here. Is this patch needed because on some platform the OS checks
> for the platform "model" (also known as "machine name") on device tree
> before continuing or to trigger a difference behavior?

Yes, exactly.

I will redo the patch with Ian's comments if it is ok in general.

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