On 04.09.2014 18:34, Benjamin Herrenschmidt wrote:
> 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 :-)
Yeah sorry, I was blind.
--
Earthling Michel D?nzer | http://www.amd.com
Libre software enthusiast | Mesa and X developer
