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Date: Tue, 23 Feb 2016 12:16:08 +1100
From: Paul Mackerras <paulus@ozlabs.org>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: linuxppc-dev@ozlabs.org, Michael Ellerman <mpe@ellerman.id.au>
Subject: Re: [PATCH 3/9] powerpc/mm/book3s-64: Use physical addresses in
 upper page table tree levels
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On Mon, Feb 22, 2016 at 10:25:51AM +0530, Aneesh Kumar K.V wrote:
> Paul Mackerras <paulus@ozlabs.org> writes:
> 
> > From: Paul Mackerras <paulus@samba.org>
> >
> > This changes the Linux page tables to store physical addresses
> > rather than kernel virtual addresses in the upper levels of the
> > tree (pgd, pud and pmd) for 64-bit Book 3S machines.
> >
> > This frees up some high order bits, and will be needed with
> > PowerISA v3.0 machines which read the page table tree in hardware
> > in radix mode.
> 
> How about hugepd pointer with 4k linux page size ?

Yes, I need to fix them too.  New series coming...

Paul.