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Subject: Re: [PATCH v9 5/8] arm64: Move hugetlb related definitions out of pgtable.h to page-defs.h


On Tue, Sep 17, 2019 at 10:49 AM Will Deacon <will@kernel.org> wrote:
>
> On Sat, Sep 07, 2019 at 10:25:45AM -0700, Alexander Duyck wrote:
> > From: Alexander Duyck <alexander.h.duyck@linux.intel.com>
> >
> > Move the static definition for things such as HUGETLB_PAGE_ORDER out of
> > asm/pgtable.h and place it in page-defs.h. By doing this the includes
> > become much easier to deal with as currently arm64 is the only architecture
> > that didn't include this definition in the asm/page.h file or a file
> > included by it.
> >
> > It also makes logical sense as PAGE_SHIFT was already defined in
> > page-defs.h so now we also have HPAGE_SHIFT defined there as well.
> >
> > Signed-off-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
> > ---
> >  arch/arm64/include/asm/page-def.h |    9 +++++++++
> >  arch/arm64/include/asm/pgtable.h  |    9 ---------
> >  2 files changed, 9 insertions(+), 9 deletions(-)
> >
> > diff --git a/arch/arm64/include/asm/page-def.h b/arch/arm64/include/asm/page-def.h
> > index f99d48ecbeef..1c5b079e2482 100644
> > --- a/arch/arm64/include/asm/page-def.h
> > +++ b/arch/arm64/include/asm/page-def.h
> > @@ -20,4 +20,13 @@
> >  #define CONT_SIZE            (_AC(1, UL) << (CONT_SHIFT + PAGE_SHIFT))
> >  #define CONT_MASK            (~(CONT_SIZE-1))
> >
> > +/*
> > + * Hugetlb definitions.
> > + */
> > +#define HUGE_MAX_HSTATE              4
> > +#define HPAGE_SHIFT          PMD_SHIFT
> > +#define HPAGE_SIZE           (_AC(1, UL) << HPAGE_SHIFT)
> > +#define HPAGE_MASK           (~(HPAGE_SIZE - 1))
> > +#define HUGETLB_PAGE_ORDER   (HPAGE_SHIFT - PAGE_SHIFT)
> > +
> >  #endif /* __ASM_PAGE_DEF_H */
> > diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
> > index 7576df00eb50..06a376de9bd6 100644
> > --- a/arch/arm64/include/asm/pgtable.h
> > +++ b/arch/arm64/include/asm/pgtable.h
> > @@ -305,15 +305,6 @@ static inline int pte_same(pte_t pte_a, pte_t pte_b)
> >   */
> >  #define pte_mkhuge(pte)              (__pte(pte_val(pte) & ~PTE_TABLE_BIT))
> >
> > -/*
> > - * Hugetlb definitions.
> > - */
> > -#define HUGE_MAX_HSTATE              4
> > -#define HPAGE_SHIFT          PMD_SHIFT
> > -#define HPAGE_SIZE           (_AC(1, UL) << HPAGE_SHIFT)
> > -#define HPAGE_MASK           (~(HPAGE_SIZE - 1))
> > -#define HUGETLB_PAGE_ORDER   (HPAGE_SHIFT - PAGE_SHIFT)
> > -
>
> Acked-by: Will Deacon <will@kernel.org>
>
> I'm assuming you're taking this along with the other patches, but please
> shout if you'd rather it went via the arm64 tree.
>
> Will

As it turns out I am close to submitting a v10 that doesn't need this
patch. I basically just needed to move the list manipulators out of
mmzone.h and then moved my header file out of there so I no longer
needed the code.

Thanks.

- Alex


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