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The Linux kernel configuration item CONFIG_VIRTIO_MEM
:
( CONFIG_X86_64 || CONFIG_ARM64 ) && ( CONFIG_VIRTIO ) && ( CONFIG_MEMORY_HOTPLUG ) && ( CONFIG_MEMORY_HOTREMOVE ) && ( CONFIG_CONTIG_ALLOC ) && ( CONFIG_EXCLUSIVE_SYSTEM_RAM )
virtio_mem
This driver provides access to virtio-mem paravirtualized memory devices, allowing to hotplug and hotunplug memory.
This driver was only tested under x86-64 and arm64, but should theoretically work on all architectures that support memory hotplug and hotremove.
If unsure, say M.
Raw data from LKDDb:
lkddb module virtio_mem CONFIG_VIRTIO_MEM : drivers/virtio/Kconfig : "Virtio mem driver" # in 5.8–5.17, 5.18-rc+HEAD
lkddb virtio 00000018 ........ : CONFIG_VIRTIO CONFIG_VIRTIO_MEM : drivers/virtio/virtio_mem.c # in 5.8–5.12
lkddb virtio 00000018 ........ : CONFIG_VIRTIO CONFIG_VIRTIO_MEM CONFIG_VIRTIO_PCI_LIB : drivers/virtio/virtio_mem.c # in 5.13–5.15
lkddb virtio 00000018 ........ : CONFIG_VIRTIO_MEM : drivers/virtio/virtio_mem.c # in 5.16–5.17, 5.18-rc+HEAD
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Automatically generated (in year 2022). See also LKDDb sources on GitLab