CONFIG_LIVEUPDATE_MEMFD: Live update support for memfd

General informations

The Linux kernel configuration item CONFIG_LIVEUPDATE_MEMFD:

• prompt: Live update support for memfd
• type: bool
• depends on: ( CONFIG_LIVEUPDATE ) && ( CONFIG_MEMFD_CREATE ) && ( CONFIG_SHMEM )
• defined in kernel/liveupdate/Kconfig
• found in Linux kernels: 7.0-rc+HEAD

Help text

Enable live update support for memfd regions. This allows preserving memfd-backed memory across kernel live updates.

This can be used to back VM memory with memfds, allowing the guest memory to persist, or for other user workloads needing to preserve pages.

If unsure, say N.

Hardware

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The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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