[v2 09/12] powerpc/mce: Enable MCE notifiers in external modules

Reza Arbab arbab at linux.ibm.com
Tue Jul 9 01:23:18 AEST 2019

On Fri, Jul 05, 2019 at 03:29:39PM +1000, Nicholas Piggin wrote:
>Okay. It might be possible to save the address in the kernel and
>then notify the driver afterward. For user-mode and any non-atomic
>user copy AFAIK the irq_work should practically run synchronously
>after the machine check returns so it might be enough to have a
>notifier in the irq work processing.

We can pick up this thread later, but if I remember correctly the 
sticking point we ran into was that we never got that far. Instead of 
returning from the MCE, we went down the fatal codepath.

Reza Arbab

More information about the Linuxppc-dev mailing list