Re: [PATCH 1/4] userfaultfd.2: Add UFFD_FEATURE_THREAD_ID docs
From: Alejandro Colomar (man-pages)
Date: Thu Mar 04 2021 - 04:24:29 EST
Hello Peter,
On 3/4/21 2:59 AM, Peter Xu wrote:
UFFD_FEATURE_THREAD_ID is supported since Linux 4.14.
Signed-off-by: Peter Xu <peterx@xxxxxxxxxx>
---
man2/userfaultfd.2 | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/man2/userfaultfd.2 b/man2/userfaultfd.2
index e7dc9f813..2d14effc6 100644
--- a/man2/userfaultfd.2
+++ b/man2/userfaultfd.2
@@ -77,6 +77,12 @@ When the last file descriptor referring to a userfaultfd object is closed,
all memory ranges that were registered with the object are unregistered
and unread events are flushed.
.\"
+.PP
+Since Linux 4.14, userfaultfd page fault message can selectively embed fault
+thread ID information into the fault message. One needs to enable this feature
+explicitly using the
+.BR UFFD_FEATURE_THREAD_ID
This should use [.B] and not [.BR].
.BR is for alternate Bold and Roman.
.B is for bold.
(There are more appearances of this in the other patches.)
Thanks,
Alex
--
Alejandro Colomar
Linux man-pages comaintainer; https://www.kernel.org/doc/man-pages/
http://www.alejandro-colomar.es/