On Thu, 11 Nov 2021 16:31:41 GMT, Andrew Dinn <ad...@openjdk.org> wrote:
> > Am I right is saying that for Macos, all generated code is remapped RO > > before execution? > > Ah, no, it seems the code cache is not RWX all the time as far as Java > threads are concerned. The Macos/AArch64 code is strategically calling > pthread_jit_write_protect_np at Java <-> JVM transition points. And this requires magic kernel support. I did mention it to a kernel engineer who wasn't very impressed, but I think it's pretty cool. ------------- PR: https://git.openjdk.java.net/jdk/pull/6334
