[PATCH v5 3/4] ioctl_userfaultfd.2: Add UFFD_FEATURE_THREAD_ID docs
From: Peter Xu <peterx@redhat.com>
Date: 2021-03-29 22:19:33
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linux-man, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
UFFD_FEATURE_THREAD_ID is supported in Linux 4.14. Acked-by: Mike Rapoport <redacted> 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
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2.26.2