linux-kernel - Re: [RFC PATCH v1 2/4] mm/hugetlb: Change parameters of arch_make_huge

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Message-ID: <d7c516b7-4fec-dc1c-c931-e7b17272372e@oracle.com>
Date:   Thu, 29 Apr 2021 10:50:49 -0700
From:   Mike Kravetz <mike.kravetz@...cle.com>
To:     Christophe Leroy <christophe.leroy@...roup.eu>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Nicholas Piggin <npiggin@...il.com>,
        Mike Rapoport <rppt@...nel.org>
Cc:     linux-arch@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        sparclinux@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [RFC PATCH v1 2/4] mm/hugetlb: Change parameters of
 arch_make_huge_pte()

On 4/28/21 9:46 AM, Christophe Leroy wrote:
> At the time being, arch_make_huge_pte() has the following prototype:
> 
> 	pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma,
> 				 struct page *page, int writable);
> 
> vma is used to get the pages shift or size.
> vma is also used on Sparc to get vm_flags.
> page is not used.
> writable is not used.
> 
> In order to use this function without a vma, and replace vma by shift
> and flags. Also remove the used parameters.
> 
> Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>
> ---
>  arch/arm64/include/asm/hugetlb.h                 | 3 +--
>  arch/arm64/mm/hugetlbpage.c                      | 5 ++---
>  arch/powerpc/include/asm/nohash/32/hugetlb-8xx.h | 5 ++---
>  arch/sparc/include/asm/pgtable_64.h              | 3 +--
>  arch/sparc/mm/hugetlbpage.c                      | 6 ++----
>  include/linux/hugetlb.h                          | 4 ++--
>  mm/hugetlb.c                                     | 6 ++++--
>  mm/migrate.c                                     | 4 +++-
>  8 files changed, 17 insertions(+), 19 deletions(-)

Hi Christophe,

Sorry, no suggestion for how to make a beautiful generic implementation.

This patch is straight forward.
Acked-by: Mike Kravetz <mike.kravetz@...cle.com>
-- 
Mike Kravetz