* [Bug tapsets/19876] New: userfaultfd missing from syscall tapset
@ 2016-03-28 14:51 dsmith at redhat dot com
2016-03-29 19:54 ` [Bug tapsets/19876] " dsmith at redhat dot com
0 siblings, 1 reply; 2+ messages in thread
From: dsmith at redhat dot com @ 2016-03-28 14:51 UTC (permalink / raw)
To: systemtap
https://sourceware.org/bugzilla/show_bug.cgi?id=19876
Bug ID: 19876
Summary: userfaultfd missing from syscall tapset
Product: systemtap
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: tapsets
Assignee: systemtap at sourceware dot org
Reporter: dsmith at redhat dot com
Target Milestone: ---
The userfaultfd syscall was added in kernel 4.3 by the following kernel commit:
====
commit 86039bd3b4e6a1129318cbfed4e0a6e001656635
Author: Andrea Arcangeli <aarcange@redhat.com>
Date: Fri Sep 4 15:46:31 2015 -0700
userfaultfd: add new syscall to provide memory externalization
Once an userfaultfd has been created and certain region of the process
virtual address space have been registered into it, the thread responsible
for doing the memory externalization can manage the page faults in
userland by talking to the kernel using the userfaultfd protocol.
poll() can be used to know when there are new pending userfaults to be
read (POLLIN).
====
Support for userfaultfd() should be added to the syscall tapset.
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* [Bug tapsets/19876] userfaultfd missing from syscall tapset
2016-03-28 14:51 [Bug tapsets/19876] New: userfaultfd missing from syscall tapset dsmith at redhat dot com
@ 2016-03-29 19:54 ` dsmith at redhat dot com
0 siblings, 0 replies; 2+ messages in thread
From: dsmith at redhat dot com @ 2016-03-29 19:54 UTC (permalink / raw)
To: systemtap
https://sourceware.org/bugzilla/show_bug.cgi?id=19876
David Smith <dsmith at redhat dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution|--- |FIXED
--- Comment #1 from David Smith <dsmith at redhat dot com> ---
Fixed in commit c7f278d.
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