[PATCH v5 4/4] powerpc/mm: unstub radix__vmemmap_remove_mapping()

[Balbir Singh]

On Tue, Jan 17, 2017 at 12:36:53PM -0600, Reza Arbab wrote:
> On Tue, Jan 17, 2017 at 12:55:13PM +0530, Balbir Singh wrote:
> > On Mon, Jan 16, 2017 at 01:07:46PM -0600, Reza Arbab wrote:
> > > Use remove_pagetable() and friends for radix vmemmap removal.
> > > 
> > > We do not require the special-case handling of vmemmap done in the x86
> > > versions of these functions. This is because vmemmap_free() has already
> > > freed the mapped pages, and calls us with an aligned address range.
> > > 
> > > So, add a few failsafe WARNs, but otherwise the code to remove physical
> > > mappings is already sufficient for vmemmap.
> > 
> > I wonder if we really need them?
> 
> Not sure what the guideline is for a "this shouldn't happen" WARN. It could
> save us some grief, should our vmemmap code ever start calling with an
> unaligned range, like it does on x86.
>

Fair enough

Acked-by: Balbir Singh <bsingharora at gmail.com>