# RISC-V Has A Nice Portable Performance Optimization With Linux 7.4

DevFeed: [RISC-V Has A Nice Portable Performance Optimization With Linux 7.4](<https://devfeed.tech/articles/risc-v-has-a-nice-portable-performance-optimization-with-linux-7-4-107130.md>)

Original publisher: [Read original article](<https://www.phoronix.com/news/Linux-7.4-RISC-V>)

Author: Michael Larabel

Published: 2026-10-30T00:36:39Z

Content type: news

Language: en

Sources: [Phoronix](<https://devfeed.tech/sources/phoronix.md>)

Topics: [RISC-V](<https://devfeed.tech/topics/riscv.md>), [Linux](<https://devfeed.tech/topics/linux.md>), [Linux Kernel](<https://devfeed.tech/topics/linux-kernel.md>)

Tags: [7-4](<https://devfeed.tech/tags/7-4.md>), [desktop-linux](<https://devfeed.tech/tags/desktop-linux.md>), [kernel](<https://devfeed.tech/tags/kernel.md>), [linux](<https://devfeed.tech/tags/linux.md>), [linux-7-4](<https://devfeed.tech/tags/linux-7-4.md>), [linux-benchmarking](<https://devfeed.tech/tags/linux-benchmarking.md>), [linux-hardware-benchmarks](<https://devfeed.tech/tags/linux-hardware-benchmarks.md>), [linux-hardware-reviews](<https://devfeed.tech/tags/linux-hardware-reviews.md>), [linux-how-to](<https://devfeed.tech/tags/linux-how-to.md>), [linux-performance](<https://devfeed.tech/tags/linux-performance.md>), [linux-server-benchmarks](<https://devfeed.tech/tags/linux-server-benchmarks.md>), [open-source-graphics](<https://devfeed.tech/tags/open-source-graphics.md>), [optimization](<https://devfeed.tech/tags/optimization.md>), [performance](<https://devfeed.tech/tags/performance.md>), [performance-optimization](<https://devfeed.tech/tags/performance-optimization.md>), [phoronix](<https://devfeed.tech/tags/phoronix.md>), [phoronix-test-suite](<https://devfeed.tech/tags/phoronix-test-suite.md>), [portable](<https://devfeed.tech/tags/portable.md>), [risc-v](<https://devfeed.tech/tags/risc-v.md>), [risc-v-architecture](<https://devfeed.tech/tags/risc-v-architecture.md>), [ubuntu-benchmarks](<https://devfeed.tech/tags/ubuntu-benchmarks.md>), [ubuntu-hardware](<https://devfeed.tech/tags/ubuntu-hardware.md>)

## AI overview

Linux 7.4 moves RISC-V's fast unaligned-access optimization from a compile-time requirement to runtime detection. Linux 7.3 support, contributed by Tenstorrent, skipped software alignment and produced up to 11% more bandwidth in Tenstorrent's tests, but required kernels to be compiled for hardware with fast misaligned copies. Runtime detection lets more generic and distribution kernel builds use the optimization when supported. The excerpt also lists crash hot-plug support, optimized page-table and context-switch paths, and ISA reporting additions for B and Zic64b.

## Source excerpt

The RISC-V architecture changes were merged today for the Linux 7.4 kernel with one nice optimization standing out...