Comment # 3 on bug 1231247 from Jiri Slaby

(In reply to Avinesh Kumar from comment #2)
> I see this recent commit, which looks very relevant to the compilation error
> -
> https://lore.kernel.org/netdev/172657576225.2195991.10894874767253579579.b4-
> ty@ellerman.id.au/T/
> 
> and it is merged in 6.12-rc1

commit 39190ac7cff1fd15135fa8e658030d9646fdb5f2
Author: Michael Ellerman <mpe@ellerman.id.au>
Date:   Mon Sep 16 22:05:10 2024 +1000

    powerpc/atomic: Use YZ constraints for DS-form instructions

is contained in 6.11.2. The commit is intended to fix atomic_reads.

So yes, the test still fails even with 6.11.2.