[$] The future of ZONE_DEVICE

Alistair Popple started his session at the 2025 Linux Storage, Filesystem,Memory-Management, and BPF Summit by proclaiming that ZONE_DEVICEis "the ugly stepchild" of the kernel's memory-management subsystem.Ugly or not, the ability to manage memory that is attached to a peripheraldevice rather than a CPU is increasingly important on current hardware.Popple hoped to cover some of the challenges with ZONE_DEVICE andfind ways to make the stepchild a bit more attractive, if not bring it intothe family entirely.