On Tue, Apr 22, 2014 at 04:30:36PM +0100, Rob Herring wrote: > On Tue, Apr 22, 2014 at 10:25 AM, Catalin Marinas > <catalin.marinas@xxxxxxx> wrote: > > On Tue, Apr 22, 2014 at 04:02:19PM +0100, Arnd Bergmann wrote: > >> On Saturday 19 April 2014, Thomas Petazzoni wrote: > > [...] > > >> I would hope we can find a way to avoid the platform notifiers for > >> mvebu as well and come up with a generic way to express this > >> 'semi-coherent' mode. I believe x-gene has a similar issue, and > >> I wouldn't be surprised if there are others like this. > > > > The solution is for the snooping unit to detect the DSB instruction > > (which is propagated outside the CPU) and wait for the completion of the > > coherency work (but we need more information from the hardware guys). > > If the solution was fixing broken h/w, we'd all be retired (or h/w > designers). :) At least they could admit it's a hardware bug and hopefully won't do the same mistake in the future (wishful thinking ;)). -- Catalin -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
