To ground these concepts, the book uses then-modern processors as case studies: Intel 80486, Pentium, and Motorola 68040. RISC: MIPS (R3000/R4000), Motorola 88000, and SPARC. Why It Still Matters Today
But the problems —memory ordering, cache coherency, lock contention, TLB thrash—are eternal. They have simply migrated. Today’s “modern architecture” (NUMA, GPUs, TPUs, CXL memory, ARM’s big.LITTLE) would make the 1994 engineer weep with schadenfreude. “You think you have it bad? Try publishing a ‘Memory Ordering Guide’ for the ARMv8. Then we’ll talk.” unix systems for modern architectures -1994- pdf
The book guides the reader through the implementation of and Mutexes . It explains the nuances that are still debated today: To ground these concepts, the book uses then-modern