| =============== | |
| /proc/sys/xen/ | |
| =============== | |
| Copyright (c) 2026, Shubham Chakraborty <chakrabortyshubham66@gmail.com> | |
| For general info and legal blurb, please look in | |
| Documentation/admin-guide/sysctl/index.rst. | |
| ------------------------------------------------------------------------------ | |
| These files show up in ``/proc/sys/xen/``, depending on the | |
| kernel configuration: | |
| .. contents:: :local: | |
| balloon/hotplug_unpopulated | |
| =========================== | |
| This flag controls whether unpopulated memory ranges are automatically | |
| hotplugged as system RAM. | |
| - ``0``: Unpopulated ranges are not hotplugged (default). | |
| - ``1``: Unpopulated ranges are automatically hotplugged. | |
| When enabled, the Xen balloon driver will add memory regions that are | |
| marked as unpopulated in the Xen memory map to the system as usable RAM. | |
| This allows for dynamic memory expansion in Xen guest domains. | |
| This option is only available when the kernel is built with | |
| ``CONFIG_XEN_BALLOON_MEMORY_HOTPLUG`` enabled. |