Linux 7.2 Is Here: Cache-Aware Scheduling, Apple M3 Boot, and USB4STREAM Are the Big Wins

After more than a year of development work, Linux 7.2 was officially released on August 16, 2026. Linus Torvalds pushed the final tag, and this cycle delivers several headline improvements that have been in the works for a long time — most notably Cache-Aware Scheduling, initial Apple M3 support, and USB4STREAM.

Cache-Aware Scheduling: More Than a Year in the Making

The standout addition in this release is Cache Aware Scheduling, which ships behind the CONFIG_SCHED_CACHE option. On modern Intel and AMD CPUs — chips with multiple last-level caches (LLCs) spread across separate "tiles" — the old scheduler could scatter related tasks across LLC zones, causing constant cache misses as those tasks fetched data from each other's memory. Cache-Aware Scheduling groups related tasks onto cores that share the same LLC, so hot data stays local.

The improvement matters most on the latest-generation big server and workstation chips where die tiling is common, but it benefits desktop CPUs too. The fact that this landed after well over a year of refinement says something about how carefully the kernel maintainers gated it: it had to work correctly across the enormous diversity of hardware Linux runs on before it was allowed anywhere near mainline.

Apple M3 Can Now Boot Linux

Asahi Linux has been steadily upstreaming Apple Silicon support, and 7.2 takes the next step: M3 MacBook Pros, Airs, and iMacs can now boot the mainline kernel. It drops you to a console — graphics, USB, and Wi-Fi are not yet functional — but the groundwork is there. M1 and M2 devices are already at varying degrees of daily-driver readiness; M3 is following the same path, just a few cycles behind.

USB4STREAM and Storage Improvements

Linux 7.2 also debuts USB4STREAM, an Intel-developed protocol for high-speed data transfers between two machines using a USB4 or Thunderbolt cable — essentially a modern replacement for legacy direct-connect use cases. On the storage side, Btrfs now enables large folios by default, which reduces overhead for large sequential reads and writes. Ext4 also gets faster I/O from memory-management improvements.

AMD and GPU Upgrades

The AMD ISP4 camera processor driver finally hits mainline, bringing better image pipeline support for AMD-based laptops with integrated cameras. AMDGPU gains initial HDMI 2.1 FRL support, which is required for 4K@120Hz and 8K@60Hz display output over a single cable — previously limited to DisplayPort. Rust support expands to the IBM S/390 architecture, continuing the kernel's gradual adoption of memory-safe drivers.

What It Means for Users

If you're on a recent AMD or Intel CPU, Cache-Aware Scheduling is the most tangible improvement — compilers, virtual machines, and multi-threaded workloads are the most likely beneficiaries. Linux 7.2 will roll into distros in the coming weeks; Arch and Gentoo users will see it first, with Ubuntu and Fedora derivatives picking it up in their next update cycles or LTS planning.

The full changelog is on Kernel Newbies for anyone who wants the exhaustive version.