# Linux 7.3 released with I/O improvements, AMD Zen 6 support, Steam Controller driver

> **Key takeaway:** Linux 7.3 kernel ships on schedule with faster I/O for modern systems, AMD Zen 6 platform preparations, a new Steam Controller driver, and improved vRAM management for memory-constrained GPUs.

**Published:** 2026-10-18T23:28:09+00:00 
**Source:** Phoronix Benchmarks & Drivers 
**Category:** kernel-os 
**Canonical URL:** https://fosswire.org/news/linux-73-released-with-io-improvements-amd-zen-6-support-ste.html 

## Summary
Linus Torvalds released Linux 7.3 on schedule. The kernel includes performance-oriented storage improvements, early enablement for AMD's upcoming Zen 6 processors, a kernel driver for the 2026 Steam Controller revision, and better video memory handling for low-VRAM systems. The release also contains firmware workarounds for Samsung 990 PRO and 990 EVO Plus SSDs that incorrectly report capabilities on certain firmware versions, plus a rare fix for SMP boot hangs dating back to 2024.

## What's in Linux 7.3
- **I/O performance**: Faster I/O paths for modern systems, though specific benchmarks or subsystem details are not provided in the source.
- **AMD Zen 6**: Platform preparation patches landed, indicating early hardware enablement ahead of silicon availability.
- **Steam Controller 2026**: New kernel driver added for the revised controller hardware expected this year.
- **AMD GPU**: Improvements for older AMD GPUs and better vRAM management on memory-constrained systems.
- **Samsung SSD workarounds**: Firmware quirk handling for 990 PRO and 990 EVO Plus drives that misreport capabilities.
- **SMP boot fix**: Resolves rare boot hangs on symmetric multiprocessing systems, with the bug present since 2024.

## Why it matters
The Steam Controller driver addition preserves input hardware compatibility in-kernel rather than relying on user-space workarounds. The Samsung SSD firmware quirk handling prevents data integrity or performance issues for users of popular consumer NVMe drives.