linux-kernel - Re: [PATCH 0/3] drop hugetlb_free_pgd

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Message-ID: <ac3a117c91d27dc7eff8c22ad6bd261dd2557451.camel@physik.fu-berlin.de>
Date: Fri, 25 Jul 2025 09:50:50 +0200
From: John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
To: Anthony Yznaga <anthony.yznaga@...cle.com>, davem@...emloft.net, 
	andreas@...sler.com, arnd@...db.de, muchun.song@...ux.dev,
 osalvador@...e.de, 	akpm@...ux-foundation.org, david@...hat.com,
 lorenzo.stoakes@...cle.com, 	Liam.Howlett@...cle.com, vbabka@...e.cz,
 rppt@...nel.org, surenb@...gle.com, 	mhocko@...e.com
Cc: linux-mm@...ck.org, sparclinux@...r.kernel.org,
 linux-arch@...r.kernel.org, 	linux-kernel@...r.kernel.org,
 alexghiti@...osinc.com, agordeev@...ux.ibm.com, 	anshuman.khandual@....com,
 christophe.leroy@...roup.eu, ryan.roberts@....com, 	will@...nel.org
Subject: Re: [PATCH 0/3] drop hugetlb_free_pgd_range()

Hi Anthony,

On Tue, 2025-07-15 at 18:26 -0700, Anthony Yznaga wrote:
> For all architectures that support hugetlb except for sparc,
> hugetlb_free_pgd_range() just calls free_pgd_range(). It turns out
> the sparc implementation is essentially identical to free_pgd_range()
> and can be removed. Remove it and update free_pgtables() to treat
> hugetlb VMAs the same as others.
> 
> Anthony Yznaga (3):
>   sparc64: remove hugetlb_free_pgd_range()
>   mm: remove call to hugetlb_free_pgd_range()
>   mm: drop hugetlb_free_pgd_range()
> 
>  arch/sparc/include/asm/hugetlb.h |   5 --
>  arch/sparc/mm/hugetlbpage.c      | 119 -------------------------------
>  include/asm-generic/hugetlb.h    |   9 ---
>  include/linux/hugetlb.h          |   7 --
>  mm/memory.c                      |  42 +++++------
>  5 files changed, 18 insertions(+), 164 deletions(-)

I have applied this series against v6.16-rc7 and booted the kernel inside a
SPARC LDOM on Solaris 11.4 without any problems.

Tested-by: John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>

Adrian

-- 
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