Benchmarking The AMD INVLPGB Linux Kernel Patches For Better Performance

Posted by bob on Dec 30, 2024 3:34 AM EDT
Phoronix; By Michael Larabel 		Mail this story
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Last weekend a Meta engineer posted Linux kernel patches to make use of the AMD INVLPGB instruction for broadcast TLB invalidation. The Linux kernel can in turn invalidate TLB entries on remote CPUs without needing to send IPIs and without having to wait for remote CPUs to handle those interrupts.

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