From: Peter Xu <peterx@redhat.com>
To: linux-man@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org
Cc: Andrea Arcangeli <aarcange@redhat.com>,
Mike Rapoport <rppt@linux.vnet.ibm.com>,
Axel Rasmussen <axelrasmussen@google.com>,
Alejandro Colomar <alx.manpages@gmail.com>,
peterx@redhat.com, Michael Kerrisk <mtk.manpages@gmail.com>,
Nadav Amit <nadav.amit@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>
Subject: [PATCH v4 3/4] ioctl_userfaultfd.2: Add UFFD_FEATURE_THREAD_ID docs
Date: Mon, 22 Mar 2021 18:08:47 -0400 [thread overview]
Message-ID: <20210322220848.52162-4-peterx@redhat.com> (raw)
In-Reply-To: <20210322220848.52162-1-peterx@redhat.com>
UFFD_FEATURE_THREAD_ID is supported in Linux 4.14.
Signed-off-by: Peter Xu <peterx@redhat.com>
---
man2/ioctl_userfaultfd.2 | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/man2/ioctl_userfaultfd.2 b/man2/ioctl_userfaultfd.2
index 47ae5f473..d4a8375b8 100644
--- a/man2/ioctl_userfaultfd.2
+++ b/man2/ioctl_userfaultfd.2
@@ -208,6 +208,11 @@ signal will be sent to the faulting process.
Applications using this
feature will not require the use of a userfaultfd monitor for processing
memory accesses to the regions registered with userfaultfd.
+.TP
+.BR UFFD_FEATURE_THREAD_ID " (since Linux 4.14)"
+If this feature bit is set,
+.I uffd_msg.pagefault.feat.ptid
+will be set to the faulted thread ID for each page fault message.
.PP
The returned
.I ioctls
--
2.26.2
next prev parent reply other threads:[~2021-03-22 22:09 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-22 22:08 [PATCH v4 0/4] man2: udpate mm/userfaultfd manpages to latest Peter Xu
2021-03-22 22:08 ` [PATCH v4 1/4] userfaultfd.2: Add UFFD_FEATURE_THREAD_ID docs Peter Xu
2021-03-23 8:27 ` Mike Rapoport
2021-03-23 15:17 ` Peter Xu
2021-03-22 22:08 ` [PATCH v4 2/4] userfaultfd.2: Add write-protect mode Peter Xu
2021-03-23 18:19 ` Alejandro Colomar (man-pages)
2021-03-23 18:58 ` Peter Xu
2021-03-22 22:08 ` Peter Xu [this message]
2021-03-22 22:08 ` [PATCH v4 4/4] ioctl_userfaultfd.2: Add write-protect mode docs Peter Xu
2021-03-23 18:11 ` Alejandro Colomar (man-pages)
2021-03-23 19:16 ` Peter Xu
2021-03-25 21:32 ` Alejandro Colomar (man-pages)
2021-03-29 21:51 ` Peter Xu
2021-03-29 22:05 ` Alejandro Colomar (man-pages)
2021-03-23 8:31 ` [PATCH v4 0/4] man2: udpate mm/userfaultfd manpages to latest Mike Rapoport
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