On Thu, 2014-09-04 at 16:52 +0900, Michel D?nzer wrote:
> > #endif
> > +#if defined(__powerpc__) && !defined(CONFIG_NOT_COHERENT_CACHE)
> > + /*
> > + * Using a non-cachable mapping of system memory on
> > + * cache coherent powerpc's can be fatal, let's make
> > + * sure this doesn't happen and warn if it does. The
> > + * only exception is powermac with AGP which has to
> > + * take the risk.
> > + */
> > + if (!machine_is(powermac) &&
> > + ((caching_flags & TTM_PL_FLAG_SYSTEM) ||
> > + (caching_flags & TTM_PL_FLAG_TT))) {
> > + pr_err_once("TTM: Attempt to use a non-cached"
> > + " mapping on RAM unsupported !\n");
> > + return tmp;
>
> NAK, this breaks AGP on PowerMacs.
No it doesn't :-)
Cheers,
Ben.
