GNU bug report logs - #47429
allocating JIT code buffer failed: Permission denied

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From: Jeffrey Walton <noloader <at> gmail.com>
To: 47429 <at> debbugs.gnu.org
Subject: bug#47429: Re 47429:allocating JIT code buffer failed: Permission denied
Date: Fri, 26 Mar 2021 21:29:07 -0400

This looks like the Apple article of interest:
https://developer.apple.com/documentation/apple-silicon/porting-just-in-time-compilers-to-apple-silicon.

According to the article, the page should be mapped with MAP_JIT.
Before instructions are written, pthread_jit_write_protect_np should
be called. After writing the jitted code, call
pthread_jit_write_protect_np again and call sys_icache_invalidate.

It looks like the OpenJDK folks are also experiencing similar issues.

Jeff

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