Re: [PATCH v16 06/16] lib: fdt: add a helper function for handling memory range property

From: Will Deacon
Date: Thu Dec 06 2018 - 10:54:08 EST


Hi Rob,

Thanks for reviewing this.

On Thu, Dec 06, 2018 at 08:47:04AM -0600, Rob Herring wrote:
> On Wed, Nov 14, 2018 at 11:52 PM AKASHI Takahiro
> <takahiro.akashi@xxxxxxxxxx> wrote:
> >
> > Added function, fdt_setprop_reg(), will be used later to handle
> > kexec-specific property in arm64's kexec_file implementation.
> > It will possibly be merged into libfdt in the future.
>
> You generally can't modify libfdt files. Any changes will be blown
> away with the next dtc sync (there's one in -next now). Though here
> you are creating a new location with fdt code. lib/ is just a shim to
> the actual libfdt code. Don't put any implementation there. You can
> add this to drivers/of/fdt_address.c for the short term, but it still
> needs to go upstream.
>
> Otherwise, the implementation looks fine to me.

I agree, but I don't think there's a real need for us to hack
drivers/of/fdt_address.c in the meantime -- let's just target upstream
and not carry this in the kernel.

Akashi -- for now, I'll drop the kdump parts of this series which rely
on this helper. The majority of the series is actually independent and
can go in as-is.

I've pushed out a kexec branch to the arm64 tree for you to take a look
at:

https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/log/?h=kexec

Thanks,

Will