*** This bug is a duplicate of bug 1709171 ***
https://bugs.launchpad.net/bugs/1709171
------- Comment From [email protected] 2018-07-25 17:46 EDT-------
Issue is fixed in ubuntu18.04:
root@ubuntu1804:~# uname -a
Linux ubuntu1804 4.15.0-29-generic #31-Ubuntu SMP Tue Jul 17 15:37:15 UTC 2018
ppc64le ppc64le ppc64le GNU/Linux
root@ubuntu1804:~# grep Mem /proc/meminfo
MemTotal: 4166464 kB
MemFree: 3612992 kB
MemAvailable: 3841728 kB
root@ubuntu1804:~#
root@ubuntu1804:~# QEMU 2.12.92 monitor - type 'help' for more information
(qemu)
(qemu) object_add memory-backend-ram,id=ram1,size=1G
(qemu) device_add pc-dimm,id=dimm1,memdev=ram1
(qemu)
root@ubuntu1804:~# grep Mem /proc/meminfo
MemTotal: 5215040 kB
MemFree: 4660224 kB
MemAvailable: 4877248 kB
root@ubuntu1804:~#
root@ubuntu1804:~#
Thanks Nathan for your work in this issue. Closing it now.
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https://bugs.launchpad.net/bugs/1710922
Title:
Ubuntu 17.10 ppc64el guest with MEMORY_HOTPLUG_DEFAULT_ONLINE=y gets a
"kernel BUG at mm/memory_hotplug.c:2185" when hotplugging LMBs with
QEMU upstream
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