[PATCH] x86: Disable XCHG to MOV optimization

[Jan Beulich]

On 13.07.2026 14:08, H.J. Lu wrote:
> I am going to check this patch into master as well as 2.47 branch.
> I added optimize_for_unsafe, which is 0, and moved XCHG to MOV
> optimization under it.  We can add something like -Ounsafe later.

But this is wrong, the optimization itself isn't unsafe. Please can we
not rush things for master, and go the easy (revert) route for 2.47?

Jan