RFR: 8310239: Add missing cross modifying fence in nmethod entry barriers [v2]

[Andrew Haley]

On Fri, 20 Oct 2023 14:54:58 GMT, Erik Österlund <eosterlund at openjdk.org> wrote:

> > 
> > I guess this is a separate issue from this patch, but where does the AMD APM guarantee that?
> 
> Hmm, it used to be in Volume 2, section 7.6.1. But in the latest revision, 3.41 from this summer, I can't find it any more. Strange.

I wonder if they may be making it up as they go along.

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PR Comment: https://git.openjdk.org/jdk/pull/14543#issuecomment-1772960890