On Wed, May 21, 2014 at 3:18 PM, Luck, Tony <tony.l...@intel.com> wrote: >>> That TIF_MCE_NOTIFY prevents the return to user mode, and we end up in >>> mce_notify_process(). >> >> Why is this necessary? > > The recovery path has to do more than just send a signal - it needs to walk > processes and > "mm"s to see which have mapped the physical address that the h/w told us has > gone bad.
I still feel like I'm missing something. If we interrupted user space code, then the context we're in should be identical to the context we'll get when we're about to return to userspace. --Andy -- 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/
