On Fri, Aug 07, 2009 at 09:58:30AM +0200, Laurent Pinchart wrote: > Sorry about this, but I'm not sure to understand the speculative prefetching > cache issue completely.
The general case with speculative prefetching is that if memory is accessible, it can be prefetched. In other words, if we mapped devices without NX (non-exec) set, the CPU can prefetch instructions from devices, causing random read accesses. Yes, I know it sounds crazy, but that's what I'm told _can_ happen. -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
