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AMD CPU microcode loading to be optimized to per-thread on Linux | #linux | #linuxsecurity | #hacking | #aihp


AMD will soon publish a new fix for the Linux kernel to allow AMD microcode updates to be updated per thread reports Michael Larabel of the website Phoronix.

The microcode for AMD CPUs added to Linux to be updated on a per-thread basis

Previously, any new processor microcodes for AMD-based CPUs had to be checked to guarantee that the open-source developers working with the company installed each physical core with the latest microcode. Not only did this leave out updates for coinciding threads for SMT processors, but it would be a lengthy process, which this new update will fix the per-thread updating within Linux.

AMD open-source developers are adding the TIP x86 and microcode branch in a soon-to-be-published patch, allowing for processor microcode loading to be processed on each logical thread. This new update will stop checking the physical component’s core level to authorize each update, which would then miss any other coinciding threads of every core.

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