THUNK_PROT_EXEC
THUNK_PROT_READ | THUNK_PROT_EXEC);
if (pv->pv_mmap_ppl & THUNK_PROT_EXEC)
KASSERT(THUNK_PROT_EXEC == VM_PROT_EXECUTE);
mmap_ppl |= THUNK_PROT_EXEC;
if (prot & THUNK_PROT_EXEC)