Dave Hansen <[email protected]> wrote: > > From: Dave Hansen <[email protected]> > > > +static inline pgprotval_t check_pgprot(pgprot_t pgprot) > +{ > + pgprotval_t massaged_val = massage_pgprot(pgprot); > + > + WARN_ONCE(pgprot_val(pgprot) != massaged_val, > + "attempted to set unsupported pgprot: %016lx " > + "bits: %016lx supported: %016lx\n", > + pgprot_val(pgprot), > + pgprot_val(pgprot) ^ massaged_val, > + __supported_pte_mask);
Perhaps use VM_WARN_ONCE instead to avoid any overhead on production systems?
