sclp_sd_sync
rc = sclp_sd_sync(page, SD_EQ_SIZE, di, 0, 0, &dsize, &esize);
rc = sclp_sd_sync(page, SD_EQ_STORE_DATA, di, asce, (u64) data, &dsize,
if (sclp_sd_sync(page, SD_EQ_HALT, di, 0, 0, NULL, NULL)) {