Memory has always been a scarce resource in computing systems, but the
problem seems to have worsened recently. In particular, the worldwide
shortage of memory chips has led to a renewed focus by systems developers
on reducing memory usage. During the memory-management microconference at
the 2026 <a href="https://lpc.events/">Linux Plumbers Conference</a>, Will
Deacon discussed one specific consumer of memory that is being
re-examined: kernel stacks.