From: Peter Xu <peterx@redhat.com>
To: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Mike Kravetz <mike.kravetz@oracle.com>,
Andrew Morton <akpm@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Matthew Wilcox <willy@infradead.org>,
Axel Rasmussen <axelrasmussen@google.com>,
"Kirill A . Shutemov" <kirill@shutemov.name>,
Mike Rapoport <rppt@linux.vnet.ibm.com>,
Mike Kravetz <mike.kravetz@oracle.com>,
Andrea Arcangeli <aarcange@redhat.com>
Subject: Re: [PATCH v4 0/4] hugetlb: Disable huge pmd unshare for uffd-wp
Date: Mon, 1 Mar 2021 09:20:49 -0500 [thread overview]
Message-ID: <20210301142049.GB397383@xz-x1> (raw)
In-Reply-To: <20210218230633.15028-1-peterx@redhat.com>
On Thu, Feb 18, 2021 at 06:06:29PM -0500, Peter Xu wrote:
> v4:
> - fix build for sparc by removing extra line in patch 1 [Mike]
> - pick Mike's r-b for patch 4
>
> v3:
> - patch 4:
> - fix build failure for !CMA and/or !HUGETLBFS [Axel]
> - Fix mmu notifier range to use start/end [Mike]
> - add more r-bs
>
> v2:
> - patch 4: move hugetlb_unshare_all_pmds() into mm/hugetlb.c, so it can be used
> even outside userfaultfd.c
>
> This series tries to disable huge pmd unshare of hugetlbfs backed memory for
> uffd-wp. Although uffd-wp of hugetlbfs is still during rfc stage, the idea of
> this series may be needed for multiple tasks (Axel's uffd minor fault series,
> and Mike's soft dirty series), so I picked it out from the larger series.
>
> References works:
>
> Uffd shmem+hugetlbfs rfc:
> https://lore.kernel.org/lkml/20210115170907.24498-1-peterx@redhat.com/
>
> Uffd minor mode for hugetlbfs:
> https://lore.kernel.org/lkml/20210212215403.3457686-1-axelrasmussen@google.com/
>
> Soft dirty for hugetlbfs:
> https://lore.kernel.org/lkml/20210211000322.159437-1-mike.kravetz@oracle.com/
Andrew/Mike,
Do you have any further comment on this series?
Thanks,
--
Peter Xu
prev parent reply other threads:[~2021-03-01 14:21 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-18 23:06 [PATCH v4 0/4] hugetlb: Disable huge pmd unshare for uffd-wp Peter Xu
2021-02-18 23:06 ` [PATCH v4 1/4] hugetlb: Pass vma into huge_pte_alloc() and huge_pmd_share() Peter Xu
2021-03-04 16:31 ` kernel test robot
2021-03-04 16:46 ` Peter Xu
2021-02-18 23:12 ` [PATCH v4 2/4] hugetlb/userfaultfd: Forbid huge pmd sharing when uffd enabled Peter Xu
2021-03-10 7:48 ` Naresh Kamboju
2021-03-10 16:57 ` Peter Xu
2021-03-10 18:09 ` Naresh Kamboju
2021-02-18 23:12 ` [PATCH v4 3/4] mm/hugetlb: Move flush_hugetlb_tlb_range() into hugetlb.h Peter Xu
2021-02-18 23:12 ` [PATCH v4 4/4] hugetlb/userfaultfd: Unshare all pmds for hugetlbfs when register wp Peter Xu
2021-03-01 14:20 ` Peter Xu [this message]
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