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AMD INVLPGB Merged For Linux 6.15 To Provide Another Performance Advantage
The work carried out by a Meta engineer to make use of AMD's INVLPGB instruction within the Linux kernel for broadcast TLB flush handling has been merged for the in-development Linux 6.15! AMD INVLPGB has the possibility of helping with the performance in some areas and is found supported by recent generations of Zen CPU cores.
AMD INVLPGB has the possibility of helping with the performance in some areas and is found supported by recent generations of Zen CPU cores. The INVLPGB goes back to AMD Zen 3 cores and only in recent months has there been work within the Linux kernel led by Meta engineer Rik van Riel for making use of the instruction. Now that these patches have been merged, I'll be running some more AMD EPYC/Ryzen benchmarks as the Linux 6.15 kernel cycle progresses.
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