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Date:   Mon, 9 Jul 2018 16:16:21 +0200
From:   Michal Hocko <mhocko@kernel.org>
To:     Alexandre Ghiti <alex@ghiti.fr>
Cc:     linux@armlinux.org.uk, catalin.marinas@arm.com,
        will.deacon@arm.com, tony.luck@intel.com, fenghua.yu@intel.com,
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        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
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        linux-arch@vger.kernel.org,
        Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>,
        Mike Kravetz <mike.kravetz@oracle.com>
Subject: Re: [PATCH v4 00/11] hugetlb: Factorize hugetlb architecture
 primitives
Message-ID: <20180709141621.GD22297@dhcp22.suse.cz>
References: <20180705110716.3919-1-alex@ghiti.fr>
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[CC hugetlb guys - http://lkml.kernel.org/r/20180705110716.3919-1-alex@ghiti.fr]

On Thu 05-07-18 11:07:05, Alexandre Ghiti wrote:
> In order to reduce copy/paste of functions across architectures and then
> make riscv hugetlb port (and future ports) simpler and smaller, this
> patchset intends to factorize the numerous hugetlb primitives that are
> defined across all the architectures.
> 
> Except for prepare_hugepage_range, this patchset moves the versions that
> are just pass-through to standard pte primitives into
> asm-generic/hugetlb.h by using the same #ifdef semantic that can be
> found in asm-generic/pgtable.h, i.e. __HAVE_ARCH_***.
> 
> s390 architecture has not been tackled in this serie since it does not
> use asm-generic/hugetlb.h at all.
> powerpc could be factorized a bit more (cf huge_ptep_set_wrprotect).
> 
> This patchset has been compiled on x86 only. 
> 
> Changelog:
> 
> v4:
>   Fix powerpc build error due to misplacing of #include
>   <asm-generic/hugetlb.h> outside of #ifdef CONFIG_HUGETLB_PAGE, as
>   pointed by Christophe Leroy.
> 
> v1, v2, v3:
>   Same version, just problems with email provider and misuse of
>   --batch-size option of git send-email
> 
> Alexandre Ghiti (11):
>   hugetlb: Harmonize hugetlb.h arch specific defines with pgtable.h
>   hugetlb: Introduce generic version of hugetlb_free_pgd_range
>   hugetlb: Introduce generic version of set_huge_pte_at
>   hugetlb: Introduce generic version of huge_ptep_get_and_clear
>   hugetlb: Introduce generic version of huge_ptep_clear_flush
>   hugetlb: Introduce generic version of huge_pte_none
>   hugetlb: Introduce generic version of huge_pte_wrprotect
>   hugetlb: Introduce generic version of prepare_hugepage_range
>   hugetlb: Introduce generic version of huge_ptep_set_wrprotect
>   hugetlb: Introduce generic version of huge_ptep_set_access_flags
>   hugetlb: Introduce generic version of huge_ptep_get
> 
>  arch/arm/include/asm/hugetlb-3level.h        | 32 +---------
>  arch/arm/include/asm/hugetlb.h               | 33 +----------
>  arch/arm64/include/asm/hugetlb.h             | 39 +++---------
>  arch/ia64/include/asm/hugetlb.h              | 47 ++-------------
>  arch/mips/include/asm/hugetlb.h              | 40 +++----------
>  arch/parisc/include/asm/hugetlb.h            | 33 +++--------
>  arch/powerpc/include/asm/book3s/32/pgtable.h |  2 +
>  arch/powerpc/include/asm/book3s/64/pgtable.h |  1 +
>  arch/powerpc/include/asm/hugetlb.h           | 43 ++------------
>  arch/powerpc/include/asm/nohash/32/pgtable.h |  2 +
>  arch/powerpc/include/asm/nohash/64/pgtable.h |  1 +
>  arch/sh/include/asm/hugetlb.h                | 54 ++---------------
>  arch/sparc/include/asm/hugetlb.h             | 40 +++----------
>  arch/x86/include/asm/hugetlb.h               | 72 +----------------------
>  include/asm-generic/hugetlb.h                | 88 +++++++++++++++++++++++++++-
>  15 files changed, 143 insertions(+), 384 deletions(-)
> 
> -- 
> 2.16.2

-- 
Michal Hocko
SUSE Labs