Am 16.08.2013 18:53, schrieb Richard Weinberger: >> Yeah, and that should be fine. &pwq->wq would be just an offset of wq > > Yep. Now my brain also parsed the C notation correctly. > Sorry for the completely wrong patch. > >> from NULL which is an invalid pointer but probe_kernel_read() should >> be able to handle that and probably just return 0 or -1 (all bits >> set). I *think* what's necessary is making probe_kernel_read() use >> mincore() to fine out whether the requested address is mapped (it >> should return -EFAULT if not) and try to dereference the address iff >> it's mapped. > > UML needs a custom probe_kernel_read()? Fine. :)
With my own probe_kernel_read() that uses mincore() it works fine so far. :-) Thanks, //richard -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
