The 2024-12 ISA spec release[1] add these features: FEAT_SME_MOP4(sme-mop4) to enable SME Quarter-tile outer product instructions and FEAT_SME_TMOP(sme-tmop) to enable SME Structured sparsity outer product instructions to allow these instructions to be available outside Armv9.6/sme2p2 [1] https://developer.arm.com/Architectures/A-Profile%20Architecture#Downloads