# Linux Patch Coming To Fix Under-Reported AMD Zen 5 TLB Sizes

DevFeed: [Linux Patch Coming To Fix Under-Reported AMD Zen 5 TLB Sizes](<https://devfeed.tech/articles/linux-patch-coming-to-fix-under-reported-amd-zen-5-tlb-sizes-26762.md>)

Original publisher: [Read original article](<https://www.phoronix.com/news/Linux-Fix-AMD-Zen-5-TLB-Sizes>)

Author: Michael Larabel

Published: 2026-09-15T10:05:51Z

Content type: news

Language: en

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

Topics: [Linux](<https://devfeed.tech/topics/linux.md>), [cpu](<https://devfeed.tech/topics/cpu.md>), [x86](<https://devfeed.tech/topics/x86.md>), [Kernel](<https://devfeed.tech/topics/kernel.md>)

Tags: [amd](<https://devfeed.tech/tags/amd.md>), [cpu](<https://devfeed.tech/tags/cpu.md>), [desktop-linux](<https://devfeed.tech/tags/desktop-linux.md>), [issue](<https://devfeed.tech/tags/issue.md>), [kernel](<https://devfeed.tech/tags/kernel.md>), [linux](<https://devfeed.tech/tags/linux.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-kernel](<https://devfeed.tech/tags/linux-kernel.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>), [phoronix](<https://devfeed.tech/tags/phoronix.md>), [phoronix-test-suite](<https://devfeed.tech/tags/phoronix-test-suite.md>), [processors](<https://devfeed.tech/tags/processors.md>), [reporting](<https://devfeed.tech/tags/reporting.md>), [ubuntu-benchmarks](<https://devfeed.tech/tags/ubuntu-benchmarks.md>), [ubuntu-hardware](<https://devfeed.tech/tags/ubuntu-hardware.md>), [x86](<https://devfeed.tech/tags/x86.md>)

## AI overview

A Linux kernel patch corrects under-reported Translation Lookaside Buffer sizes for AMD Zen 5 EPYC and Ryzen processors. The change also supports Zen 6 and future AMD CPUs using the same reporting bit.

## Source excerpt

A minor reporting issue on Linux that has gone unaddressed until now is for properly conveying the Translation Lookaside Buffer (TLB) sizes on AMD Zen 5 processors...