Re: [PATCH 1/6] arm64: Unconditionally call unflatten_device_tree()

[Stephen Boyd]

Quoting Mark Rutland (2024-01-16 03:51:14)
> Hi Stephen,
> 
> On Fri, Jan 12, 2024 at 12:07:44PM -0800, Stephen Boyd wrote:
> > Call this function unconditionally so that we can populate an empty DTB
> > on platforms that don't boot with a firmware provided or builtin DTB.
> > There's no harm in calling unflatten_device_tree() unconditionally.
> 
> For better or worse, that's not true: there are systems the provide both a DTB
> *and* ACPI tables, and we must not consume both at the same time as those can
> clash and cause all sorts of problems. In addition, we don't want people being
> "clever" and describing disparate portions of their system in ACPI and DT.
> 
> It is a very deliberate choice to not unflatten the DTB when ACPI is in use,
> and I don't think we want to reopen this can of worms.

Hmm ok. I missed this part. Can we knock out the initial_boot_params in
this case so that we don't unflatten a DTB when ACPI is in use?