Technology

Linux prepares to axe legacy x32 hybrid mode — hybrid 32-bit/64-bit mode faces complete removal by 2027 due to low adoption

Source

Tom's Hardware

Published

May 29, 2026

TL;DR

AI Generated

The Linux kernel is considering removing the x32 ABI, a hybrid 32-bit/64-bit mode introduced in 2012, by 2027 due to low adoption rates. The x32 ABI aimed to optimize memory consumption for 64-bit programs by using 32-bit pointers while accessing the full 64-bit register file. Despite its potential performance improvements, the x32 ABI faced challenges such as complexity for developers and limited memory usage per process. The lack of mainstream adoption and exclusivity to Linux contributed to its demise, as it did not see widespread use by software developers.

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Linux prepares to axe legacy x32 hybrid mode — hybrid 32-bit/64-bit mode faces complete removal by 2027 due to low adoption

TL;DR

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Amazon unveils 'Resilient Network Graphs' data center network that cuts hardware by 69% and boosts throughput by 33% — now the default for most AWS workloads