[PATCH v5 0/5] mm/hugetlb: Early cow on fork, and a few cleanups · Peter Xu <peterx@redhat.com> · 2021-02-17
[PATCH v5 2/5] hugetlg: Break earlier in add_reservation_in_range() when we can · Peter Xu <peterx@redhat.com> · 2021-02-17
[PATCH v5 1/5] hugetlb: Dedup the code to add a new file_region · Peter Xu <peterx@redhat.com> · 2021-02-17
[PATCH v5 3/5] mm: Introduce page_needs_cow_for_dma() for deciding whether cow · Peter Xu <peterx@redhat.com> · 2021-02-17
[PATCH v5 4/5] mm: Use is_cow_mapping() across tree where proper · Peter Xu <peterx@redhat.com> · 2021-02-17
[PATCH v5 5/5] hugetlb: Do early cow when page pinned on src mm · Peter Xu <peterx@redhat.com> · 2021-02-17
Re: [PATCH v5 0/5] mm/hugetlb: Early cow on fork, and a few cleanups · Peter Xu <peterx@redhat.com> · 2021-03-01
Re: [PATCH v5 0/5] mm/hugetlb: Early cow on fork, and a few cleanups · Andrew Morton <akpm@linux-foundation.org> · 2021-03-02
Re: [PATCH v5 0/5] mm/hugetlb: Early cow on fork, and a few cleanups · Jason Gunthorpe <jgg@ziepe.ca> · 2021-03-02
Re: [PATCH v5 0/5] mm/hugetlb: Early cow on fork, and a few cleanups · Zhang, Wei <hidden> · 2021-03-02
Re: [PATCH v5 0/5] mm/hugetlb: Early cow on fork, and a few cleanups · Peter Xu <peterx@redhat.com> · 2021-03-03
Re: [PATCH v5 0/5] mm/hugetlb: Early cow on fork, and a few cleanups · Linus Torvalds <torvalds@linux-foundation.org> · 2021-03-03
Re: [PATCH v5 0/5] mm/hugetlb: Early cow on fork, and a few cleanups · Jason Gunthorpe <jgg@ziepe.ca> · 2021-03-04

Re: [PATCH v5 0/5] mm/hugetlb: Early cow on fork, and a few cleanups

From: Zhang, Wei <hidden>
Date: 2021-03-02 07:46:49
Also in: lkml

Yes, such user includes libfabric (https://ofiwg.github.io/libfabric/) . which uses hugetlb pages.
 
On 3/1/21, 4:30 PM, "Jason Gunthorpe" [off-list ref] wrote:

    CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you can confirm the sender and know the content is safe.



    On Mon, Mar 01, 2021 at 04:28:46PM -0800, Andrew Morton wrote:
    > On Mon, 1 Mar 2021 09:11:51 -0500 Peter Xu [off-list ref] wrote:
    >
    > > On Wed, Feb 17, 2021 at 06:35:42PM -0500, Peter Xu wrote:
    > > > v5:
    > > > - patch 4: change "int cow" into "bool cow"
    > > > - collect r-bs for Jason
    > >
    > > Andrew,
    > >
    > > I just noticed 5.12-rc1 has released; is this series still possible to make it
    > > for 5.12, or needs to wait for 5.13?
    > >
    >
    > It has taken a while to settle down.  What is the case for
    > fast-tracking it into 5.12?

    IIRC hugetlb users and fork and DMA will get the unexpected VA
    corruption that triggered all this work.

    Jason

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