linux-kernel - Re: [PATCH v5 3/7] mm: Add batched versions of ptep_modify_prot

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Message-ID: <4526856B-A908-431C-AB9A-063BAF810AFC@nvidia.com>
Date: Wed, 23 Jul 2025 11:09:22 -0400
From: Zi Yan <ziy@...dia.com>
To: Dev Jain <dev.jain@....com>
Cc: akpm@...ux-foundation.org, ryan.roberts@....com, david@...hat.com,
 willy@...radead.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org,
 catalin.marinas@....com, will@...nel.org, Liam.Howlett@...cle.com,
 lorenzo.stoakes@...cle.com, vbabka@...e.cz, jannh@...gle.com,
 anshuman.khandual@....com, peterx@...hat.com, joey.gouly@....com,
 ioworker0@...il.com, baohua@...nel.org, kevin.brodsky@....com,
 quic_zhenhuah@...cinc.com, christophe.leroy@...roup.eu,
 yangyicong@...ilicon.com, linux-arm-kernel@...ts.infradead.org,
 hughd@...gle.com, yang@...amperecomputing.com
Subject: Re: [PATCH v5 3/7] mm: Add batched versions of
 ptep_modify_prot_start/commit

On 18 Jul 2025, at 5:02, Dev Jain wrote:

> Batch ptep_modify_prot_start/commit in preparation for optimizing mprotect,
> implementing them as a simple loop over the corresponding single pte
> helpers. Architecture may override these helpers.
>
> Signed-off-by: Dev Jain <dev.jain@....com>
> ---
>  include/linux/pgtable.h | 84 ++++++++++++++++++++++++++++++++++++++++-
>  mm/mprotect.c           |  4 +-
>  2 files changed, 85 insertions(+), 3 deletions(-)
>

LGTM. Reviewed-by: Zi Yan <ziy@...dia.com>

Best Regards,
Yan, Zi