On 15/07/14 14:48, Frediano Ziglio wrote: > sync_test_bit function require a long* read access to pointer. > This is a problem if the you are using last entry in the page causing > an access to next page. If this page is not readable you get a memory > access failure (page fault). > All other x64 bit functions access memory using 32 bit operations. > For processors different than x64 long aligned operations are used.
I think we should implement a set of 32-bit bit ops. We fudged around it for the arm64 problem but this second problem shows we need a better solution. David -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
