On Wed, May 21, 2014 at 2:45 PM, H. Peter Anvin <[email protected]> wrote: > Adding Tony. > > On 05/21/2014 02:43 PM, Borislav Petkov wrote: >> On Thu, May 22, 2014 at 06:37:26AM +0900, Linus Torvalds wrote: >>> Seriously. If an NMI is interrupted by an MCE, you might as well >>> consider the machine dead. Don't worry about it. We may or may not >>> recover, but it is *not* our problem. >> >> I certainly like this way of handling it. We can even issue a nice >> banner saying something like "You're f*cked - go change hw." >> > > Actually, it would be a lot better to panic than deadlock (HA systems > tend to have something in place to catch the panic and/or reboot). Any > way we can see if the CPU is already holding that lock and panic in that > case? >
Is there anything actually wrong with just panicking if !user_mode_vm(regs)? That would make this a lot more sane. --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/
