Re: [PATCH v3 2/3] arm64: implement update_fdt_pgprot()

[Rob Herring]

On Thu, May 16, 2019 at 9:51 AM Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx> wrote:
>
> On Thu, May 16, 2019 at 10:37 PM Rob Herring <robh+dt@xxxxxxxxxx> wrote:
>
> >
> > Why not just map the FDT R/W at the start and change it to RO just
> > before calling unflatten_device_tree? Then all the FDT scanning
> > functions or any future fixups we need can just assume R/W. That is
> > essentially what Stephen suggested. However, there's no need for a
> > weak function as it can all be done within the arch code.
> >
> We need to add a new seed for kexec

Doesn't kexec operate on a copy because it already does modifications.

Rob