On Wed, May 21, 2014 at 08:21:57AM -0700, Andy Lutomirski wrote: > ISTM the do_machine_check code ought to consider any kill-worthy MCE > from kernel space to be non-recoverable, but I want to keep the scope > of these patches under control.
MCA has a bit called RIPV which, if set, signals that RIP is valid and it is safe to return provided we've taken proper care of handling even non-correctable errors (memory poisoning, etc). If RIPV is not set, we panic anyway. > That being said, if an MCE that came from CPL0 never tried to return, > this would be simpler. I don't know enough about the machine check > architecture to know whether that's a reasonable thing to do. Yeah, there are cases where MCE can return, see above. -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. -- -- 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/