CONFIG_HMM_MIRROR:

General informations

The Linux kernel configuration item CONFIG_HMM_MIRROR has multiple definitions:

found in mm/Kconfig

The configuration item CONFIG_HMM_MIRROR:

• prompt:
• type: bool
• depends on: CONFIG_MMU
• defined in mm/Kconfig
• found in Linux kernels: 5.4–5.19, 6.0–6.12, 6.13-rc+HEAD

Help text

(none)

HMM mirror CPU page table into a device page table found in mm/Kconfig

The configuration item CONFIG_HMM_MIRROR:

• prompt: HMM mirror CPU page table into a device page table
• type: bool
• depends on: (( CONFIG_X86_64 || CONFIG_PPC64 )) && ( CONFIG_MMU && CONFIG_64BIT )
• defined in mm/Kconfig
• found in Linux kernels: 4.14–4.20, 5.0–5.3

Help text

Select HMM_MIRROR if you want to mirror range of the CPU page table of a process into a device page table. Here, mirror means "keep synchronized". Prerequisites: the device must provide the ability to write-protect its page tables (at PAGE_SIZE granularity), and must be able to recover from the resulting potential page faults.

Hardware

LKDDb

Raw data from LKDDb:

• (none)

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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