** Also affects: linux-raspi2 (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux-raspi2 (Ubuntu Xenial)
Status: New => Fix Committed
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https://bugs.launchpad.net/bugs/1633516
Title:
Enable CONFIG_USERFAULTFD
Status in linux-raspi2 package in Ubuntu:
New
Status in linux-raspi2 source package in Xenial:
Fix Committed
Bug description:
Enable the userfaultfd() system call that allows to intercept and
handle page faults in userland.
How to test:
stress-ng -v --userfaultfd 1 --metrics-brief --syslog --tz -t 180
if disabled it will print:
stress-ng-userfaultfd: userfaultfd failed, errno = 38
(Function not implemented)
while, if enabled:
stress-ng: debug: [445] starting stressors
stress-ng: debug: [445] 1 stressor spawned
stress-ng: debug: [446] stress-ng-userfaultfd: started [446] (instance 0)
stress-ng: debug: [446] stress-ng-userfaultfd: exited [446] (instance 0)
stress-ng: debug: [445] process [446] terminated
stress-ng: info: [445] successful run completed in 180.03s (3 mins, 0.03
secs)
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