Re: [PATCH 2/3] target/ppc: Update VMX storage access insns to use tcg_gen_qemu_ld/st_i128.

[Richard Henderson]

On 6/21/24 04:46, Chinmay Rath wrote:
> +    tcg_gen_qemu_ld_i128(avr, EA, ctx->mem_idx, DEF_MEMOP(MO_128));
> +    set_avr_full(a->rt, avr);

This needs to specify atomicity as well.  This is much more important to for 16 byte 
operations than smaller accesses, as this might require stop-the-world semantics depending 
on the host.

According to section 1.4 Storage Atomicity, we need no more than 8-byte atomicity for 
these vector operations, and then the following the alignment bits down.

So: MO_128 | MO_ATOM_IFALIGN_PAIR,


r~