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

From: "Greg Burd" <greg(at)burd(dot)me>
To: "Nathan Bossart" <nathandbossart(at)gmail(dot)com>, "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: "Thomas Munro" <thomas(dot)munro(at)gmail(dot)com>, "Andres Freund" <andres(at)anarazel(dot)de>, "PostgreSQL Hackers" <pgsql-hackers(at)lists(dot)postgresql(dot)org>, "Peter Eisentraut" <peter(at)eisentraut(dot)org>, "Dave Cramer" <davecramer(at)gmail(dot)com>
Subject: Re: [PATCH] Fix ARM64/MSVC atomic memory ordering issues on Win11 by adding explicit DMB ?barriers
Date: 2026-01-05 12:42:07
Message-ID: 7257383b-4c0e-47c8-82e2-5c91edf2bd91@app.fastmail.com
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On Sun, Jan 4, 2026, at 3:21 PM, Nathan Bossart wrote:
> On Sun, Jan 04, 2026 at 03:13:15PM -0500, Tom Lane wrote:
>> "Greg Burd" <greg(at)burd(dot)me> writes:
>>> What this patch does is get "unicorn" off the dead list, which would be nice.
>>
>> Indeed ... I'm getting pretty tired of seeing unicorn cluttering
>> the BF failures list. Is there a reason we're still holding off
>> committing, other than it being holiday season?

Tom, I'd turned off the "cron" equivalent on unicorn (or so I hope, Windows is... odd) the morning you sent this to reduce noise. Apologies for that. As soon as Nathan commits that patch I'll re-start it. I'm also still committed to finishing up the other pieces and docs so that it's not half-done.

> Nope, I was planning to commit it in a few days when I am back.

Nathan, thanks! Let's coordinate when you're back online. :)

> --
> nathan

best,

-greg

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