From: Axel Rasmussen <axelrasmussen@google.com>
To: Alexander Viro <viro@zeniv.linux.org.uk>,
Andrea Arcangeli <aarcange@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Hugh Dickins <hughd@google.com>,
Jerome Glisse <jglisse@redhat.com>, Joe Perches <joe@perches.com>,
Lokesh Gidra <lokeshgidra@google.com>,
Mike Kravetz <mike.kravetz@oracle.com>,
Mike Rapoport <rppt@linux.vnet.ibm.com>,
Peter Xu <peterx@redhat.com>, Shaohua Li <shli@fb.com>,
Shuah Khan <shuah@kernel.org>,
Stephen Rothwell <sfr@canb.auug.org.au>,
Wang Qing <wangqing@vivo.com>
Cc: linux-api@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org,
linux-mm@kvack.org, Axel Rasmussen <axelrasmussen@google.com>,
Brian Geffon <bgeffon@google.com>,
"Dr . David Alan Gilbert" <dgilbert@redhat.com>,
Mina Almasry <almasrymina@google.com>,
Oliver Upton <oupton@google.com>
Subject: [PATCH v4 10/10] userfaultfd: update documentation to mention shmem minor faults
Date: Tue, 20 Apr 2021 15:08:04 -0700 [thread overview]
Message-ID: <20210420220804.486803-11-axelrasmussen@google.com> (raw)
In-Reply-To: <20210420220804.486803-1-axelrasmussen@google.com>
Generally, the documentation we wrote for hugetlbfs-based minor faults
still all applies. The only missing piece is to mention the new feature
flag which indicates that the kernel supports this for shmem as well.
Signed-off-by: Axel Rasmussen <axelrasmussen@google.com>
---
Documentation/admin-guide/mm/userfaultfd.rst | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/Documentation/admin-guide/mm/userfaultfd.rst b/Documentation/admin-guide/mm/userfaultfd.rst
index 3aa38e8b8361..6528036093e1 100644
--- a/Documentation/admin-guide/mm/userfaultfd.rst
+++ b/Documentation/admin-guide/mm/userfaultfd.rst
@@ -77,7 +77,8 @@ events, except page fault notifications, may be generated:
- ``UFFD_FEATURE_MINOR_HUGETLBFS`` indicates that the kernel supports
``UFFDIO_REGISTER_MODE_MINOR`` registration for hugetlbfs virtual memory
- areas.
+ areas. ``UFFD_FEATURE_MINOR_SHMEM`` is the analogous feature indicating
+ support for shmem virtual memory areas.
The userland application should set the feature flags it intends to use
when invoking the ``UFFDIO_API`` ioctl, to request that those features be
--
2.31.1.368.gbe11c130af-goog
next prev parent reply other threads:[~2021-04-20 22:08 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-20 22:07 [PATCH v4 00/10] userfaultfd: add minor fault handling for shmem Axel Rasmussen
2021-04-20 22:07 ` Axel Rasmussen
2021-04-20 22:07 ` [PATCH v4 01/10] userfaultfd/hugetlbfs: avoid including userfaultfd_k.h in hugetlb.h Axel Rasmussen
2021-04-20 22:07 ` Axel Rasmussen
2021-04-27 2:05 ` Hugh Dickins
2021-04-27 2:05 ` Hugh Dickins
2021-04-20 22:07 ` [PATCH v4 02/10] userfaultfd/shmem: combine shmem_{mcopy_atomic,mfill_zeropage}_pte Axel Rasmussen
2021-04-20 22:07 ` Axel Rasmussen
2021-04-20 22:07 ` [PATCH v4 03/10] userfaultfd/shmem: support UFFDIO_CONTINUE for shmem Axel Rasmussen
2021-04-20 22:07 ` Axel Rasmussen
2021-04-22 20:22 ` Axel Rasmussen
2021-04-22 20:22 ` Axel Rasmussen
2021-04-22 21:18 ` Peter Xu
2021-04-22 22:05 ` Axel Rasmussen
2021-04-22 22:05 ` Axel Rasmussen
2021-04-27 2:19 ` Hugh Dickins
2021-04-27 2:19 ` Hugh Dickins
2021-04-27 15:54 ` Peter Xu
2021-04-27 16:57 ` Axel Rasmussen
2021-04-27 16:57 ` Axel Rasmussen
2021-04-27 18:03 ` Peter Xu
2021-04-27 20:29 ` Axel Rasmussen
2021-04-27 20:29 ` Axel Rasmussen
2021-04-27 20:42 ` Peter Xu
2021-04-27 20:59 ` Hugh Dickins
2021-04-27 20:59 ` Hugh Dickins
2021-04-20 22:07 ` [PATCH v4 04/10] userfaultfd/shmem: support minor fault registration " Axel Rasmussen
2021-04-20 22:07 ` Axel Rasmussen
2021-04-27 2:23 ` Hugh Dickins
2021-04-27 2:23 ` Hugh Dickins
2021-04-27 15:57 ` Peter Xu
2021-04-27 17:03 ` Axel Rasmussen
2021-04-27 17:03 ` Axel Rasmussen
2021-04-20 22:07 ` [PATCH v4 05/10] userfaultfd/selftests: use memfd_create for shmem test type Axel Rasmussen
2021-04-20 22:07 ` Axel Rasmussen
2021-04-20 22:08 ` [PATCH v4 06/10] userfaultfd/selftests: create alias mappings in the shmem test Axel Rasmussen
2021-04-20 22:08 ` Axel Rasmussen
2021-04-20 22:08 ` [PATCH v4 07/10] userfaultfd/selftests: reinitialize test context in each test Axel Rasmussen
2021-04-20 22:08 ` Axel Rasmussen
2021-04-20 22:08 ` [PATCH v4 08/10] userfaultfd/selftests: exercise minor fault handling shmem support Axel Rasmussen
2021-04-20 22:08 ` Axel Rasmussen
2021-04-20 22:08 ` [PATCH v4 09/10] userfaultfd/shmem: modify shmem_mcopy_atomic_pte to use install_pte() Axel Rasmussen
2021-04-20 22:08 ` Axel Rasmussen
2021-04-21 1:02 ` Peter Xu
2021-04-27 2:59 ` Hugh Dickins
2021-04-27 2:59 ` Hugh Dickins
2021-04-20 22:08 ` Axel Rasmussen [this message]
2021-04-20 22:08 ` [PATCH v4 10/10] userfaultfd: update documentation to mention shmem minor faults Axel Rasmussen
2021-04-27 2:27 ` Hugh Dickins
2021-04-27 2:27 ` Hugh Dickins
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