- bool "HMM mirror CPU page table into a device page table"
- depends on (X86_64 || PPC64)
- depends on MMU && 64BIT
- select MMU_NOTIFIER
- help
- 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.