> > Yeah, I guess that's right.  It should still return NOTIFY_STOP when
quoted text
> > args->err has no other bits set, so notifiers aren't called with zero.
> 
> In practice that might not work.  On my machine, at least, reads of DR6
> return ones in all the reserved bit positions.

Does that mean asm("mov %1,%%dr6; mov %%dr6,%0" : "=r" (mask) : "r" (0)); 
puts in mask the set of reserved bits?  We could collect that value at CPU
startup and mask it off args->err, then OR it back into vdr6.


Thanks,
Roland
-
unsubscribe notice
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/