Re: [PATCH v3 5/8] mm: userfaultfd: support UFFDIO_POISON for hugetlbfs

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To: Axel Rasmussen <axelrasmussen@xxxxxxxxxx>
Subject: Re: [PATCH v3 5/8] mm: userfaultfd: support UFFDIO_POISON for hugetlbfs
From: Peter Xu <peterx@xxxxxxxxxx>
Date: Fri, 7 Jul 2023 09:39:07 -0400
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Brian Geffon <bgeffon@xxxxxxxxxx>, Christian Brauner <brauner@xxxxxxxxxx>, David Hildenbrand <david@xxxxxxxxxx>, Gaosheng Cui <cuigaosheng1@xxxxxxxxxx>, Huang Ying <ying.huang@xxxxxxxxx>, Hugh Dickins <hughd@xxxxxxxxxx>, James Houghton <jthoughton@xxxxxxxxxx>, "Jan Alexander Steffens (heftig)" <heftig@xxxxxxxxxxxxx>, Jiaqi Yan <jiaqiyan@xxxxxxxxxx>, Jonathan Corbet <corbet@xxxxxxx>, Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>, "Liam R. Howlett" <Liam.Howlett@xxxxxxxxxx>, Miaohe Lin <linmiaohe@xxxxxxxxxx>, Mike Kravetz <mike.kravetz@xxxxxxxxxx>, "Mike Rapoport (IBM)" <rppt@xxxxxxxxxx>, Muchun Song <muchun.song@xxxxxxxxx>, Nadav Amit <namit@xxxxxxxxxx>, Naoya Horiguchi <naoya.horiguchi@xxxxxxx>, Ryan Roberts <ryan.roberts@xxxxxxx>, Shuah Khan <shuah@xxxxxxxxxx>, Suleiman Souhlal <suleiman@xxxxxxxxxx>, Suren Baghdasaryan <surenb@xxxxxxxxxx>, "T.J. Alumbaugh" <talumbau@xxxxxxxxxx>, Yu Zhao <yuzhao@xxxxxxxxxx>, ZhangPeng <zhangpeng362@xxxxxxxxxx>, linux-doc@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-kselftest@xxxxxxxxxxxxxxx
In-reply-to: <20230706225037.1164380-6-axelrasmussen@google.com>

On Thu, Jul 06, 2023 at 03:50:33PM -0700, Axel Rasmussen wrote:
> The behavior here is the same as it is for anon/shmem. This is done
> separately because hugetlb pte marker handling is a bit different.
> 
> Signed-off-by: Axel Rasmussen <axelrasmussen@xxxxxxxxxx>

Acked-by: Peter Xu <peterx@xxxxxxxxxx>

-- 
Peter Xu

References:
- [PATCH v3 0/8] add UFFDIO_POISON to simulate memory poisoning with UFFD
  - From: Axel Rasmussen
- [PATCH v3 5/8] mm: userfaultfd: support UFFDIO_POISON for hugetlbfs
  - From: Axel Rasmussen

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