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A comment on What Every Hacker Should Know About TLB Invalidation [pdf]. Parent comment

Re:What Every Hacker Should Know About TLB Invalidation [pdf] by egberts1 on Thursday January 16, 2025 @11:30AM (#42727473)
Wow. So V8 actually back to optimizing the entire bytecode region in one fell swoop?

I had thought that such V8 optimization were still occuring (as of Chrome Blink81/SparkPlug) during JavaScript execution of untouched bytecode as a form of overhead reduction of its startup.

https://egbert.net/blog/articles/javascript-jit-engines-time...

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Re:What Every Hacker Should Know About TLB Invalidation [pdf] by Retr0id on Thursday January 16, 2025 @01:25PM (#42728927)
I don't know what V8 actually does, but one possible strategy is to have a pair of RW and RX mappings to the same physical pages (or just keep flipping permissions between the two)
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