PR_PSERIALIZE
PR_PSERIALIZE, "lwppl", NULL, IPL_NONE, lwp_ctor, lwp_dtor, NULL);
#define pc_has_pser(pc) (((pc)->pc_roflags & PR_PSERIALIZE) != 0)
#define pp_has_pser(pp) (((pp)->pr_roflags & PR_PSERIALIZE) != 0)
ppflags &= ~PR_PSERIALIZE;
if (flags & PR_PSERIALIZE) {