[$] Support for private memory nodes

Gregory Price started his session in the memory-management track of the 2026 Linux Storage, Filesystem, Memory Management, and BPF Summit by saying that, in current kernels, if a NUMA node has memory, the assumption is that anybody can make use of it. He is trying to implement the opposite policy — to make some memory off-limits for all processes except those designed specifically to use it. The session was used to present his goals and to discuss how they might be implemented.