installed mentioned kernel version an did a memory hot-plugging test
which was sucessfull
kernel version:
root@ubuntu:/boot# uname -a
Linux ubuntu 5.4.0-1040-kvm #41-Ubuntu SMP Fri May 14 20:43:17 UTC 2021 x86_64
x86_64 x86_64 GNU/Linux
module in kernel configuration is set:
root@ubuntu:/boot# grep -i CONFIG_ACPI_HOTPLUG_MEMORY
/boot/config-5.4.0-1040-kvm
CONFIG_ACPI_HOTPLUG_MEMORY=y
memory before memory hot-plugging:
root@ubuntu:/boot# free -k
total used free shared buff/cache available
Mem: 4027608 149232 3621316 480 257060 3828108
Swap: 0 0 0
memory after memory hot-plugging:
root@ubuntu:/boot# free -k
total used free shared buff/cache available
Mem: 10319064 249788 9802568 480 266708 9960284
Swap: 0 0 0
** Tags removed: verification-needed-focal
** Tags added: verification-done-focal
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https://bugs.launchpad.net/bugs/1925008
Title:
no memory hot-plugging in cloud-images
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