On Tue, Nov 11, 2014 at 10:34 AM, Andy Lutomirski <[email protected]> wrote: > On Tue, Nov 11, 2014 at 10:22 AM, Borislav Petkov <[email protected]> wrote: >> On Tue, Nov 11, 2014 at 09:15:18AM -0800, Andy Lutomirski wrote: >>> Oh -- does it need to sleep? >> >> Oh yeah, iterates over all tasks and generally async access to VM stuff. >> You can have a look if bored: mm/memory-failure.c >> >> :-) >> >>> I find myself wondering whether a much cleaner solution might be to >>> sync regs and switch stacks before invoking do_machine_check rather >>> than afterwards. Then do_machine_check would really be completely >>> non-atomic. It would add a few lines of asm, though. >> >> That's like wagging the dog. > > Wagging this particular dog might shake some loose fur off. If we did > this for all paranoid entries, then paranoid_userspace could just be > deleted. :)
Andi is about to make this dog even messier. I think I like my suggestion more and more. --Andy -- 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/
