HMAC_S390X_BUF_NUM_BLOCKS
if (ctx->plat.s390x.size != (size_t)(ctx->plat.s390x.blk_size * HMAC_S390X_BUF_NUM_BLOCKS)) {
ctx->plat.s390x.buf = OPENSSL_zalloc(ctx->plat.s390x.blk_size * HMAC_S390X_BUF_NUM_BLOCKS);
ctx->plat.s390x.size = ctx->plat.s390x.blk_size * HMAC_S390X_BUF_NUM_BLOCKS;