rcheck
bool (*rcheck)(struct vringh *vrh, u64 addr, size_t *len,
if (!rcheck(vrh, addr, &part, range, getrange))
bool (*rcheck)(struct vringh *vrh, u64 addr, size_t *len,
err = slow_copy(vrh, &desc, &descs[i], rcheck, getrange,
if (!rcheck(vrh, a, &len, &range, getrange)) {
if (!rcheck(vrh, vringh64_to_cpu(vrh, desc.addr), &len, &range,
e1 = rcheck(wstatus, "server");
e2 = rcheck(wstatus, "client");
e1 = rcheck(wstatus, "server");
e2 = rcheck(wstatus, "client");