Re: [PATCH 0/2] MR10248: ntdll: Prefer CONTEXT.MxCsr over CONTEXT.FltSave.MxCsr in NtSetContextThread() on x64.

[Vishnunithyasoundhar S (＠svishnunithyasoundhar)]

On Thu Mar  5 19:56:50 2026 +0000, Paul Gofman wrote:
> OpenJDK JVM runtime wants to comapre MxCsr with the initial one and
> restore the initial if that differs by setting CONTEXT.MxCsr (in
> exception handler). We currently prefer MxCsr from CONTEXT.FltSave but
> turns out that is not the case on Windows. Failure to actually update
> MxCsr from exception context when continuing execution causes inifinite
> exception loop.
> Can you add this to the commit msg? You can edit it with this

![image.png](/uploads/439205e9fe2329c77a107c63248ec2cc/image.png){width=900 height=267}

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https://gitlab.winehq.org/wine/wine/-/merge_requests/10248#note_131381