Re: [PATCH v4 2/2] target/s390x: support SHA-512 extensions

[Jason A. Donenfeld]

On Wed, Aug 03, 2022 at 02:14:58PM +0200, Jason A. Donenfeld wrote:
>         s.even = (unsigned long)src;
>         s.odd  = (unsigned long)src_len;
>         asm volatile(
>                 "       lgr     0,%[fc]\n"
>                 "       lgr     1,%[pba]\n"
>                 "0:     .insn   rre,%[opc] << 16,0,%[src]\n"
>                 "       brc     1,0b\n" /* handle partial completion */
>                 : [src] "+&d" (s.pair)
>                 : [fc] "d" (func), [pba] "d" ((unsigned long)(param)),
>                   [opc] "i" (CPACF_KIMD)
>                 : "cc", "memory", "0", "1");
> 
> So I guess that means it'll just loop until it's done? Or do I need to
> return "1" from HELPER(msa)?

Looks like returning 3 did the trick. v5 incoming...

Jason