Thread

Re: [PATCH] Fix ARM64/MSVC atomic memory ordering issues on Win11 by adding explicit DMB ​barriers

Greg Burd <greg@burd.me> — 2025-12-10T16:31:36Z

Hello.

Rebased with only minor changes to meson.build this patch is ready for review/commit as it is passing tests on my aarch64 Win11 MSVC system.  Also note that this system I'm testing on is ready to become a member of the buildfarm (application submitted) and monitor this combo in perpetuity.

FWIW, Dave's bug report to Microsoft [1] seems to be a duplicate of [2] and the duplicate is about to be auto-closed.

best.

-greg

[1] https://developercommunity.visualstudio.com/t/MSVCs-_InterlockedCompareExchange-doe/11004239
[2] https://developercommunity.visualstudio.com/t/MSVC-compiler-optimization-in-PostgreSQL/10982137