Re: [PATCH v11 0/4] Machine check recovery when kernel accesses poison

From: Borislav Petkov
Date: Thu Feb 11 2016 - 17:02:32 EST


On Thu, Feb 11, 2016 at 01:34:10PM -0800, Tony Luck wrote:
> This series is initially targeted at the folks doing filesystems
> on top of NVDIMMs. They really want to be able to return -EIO
> when there is a h/w error (just like spinning rust, and SSD does).
>
> I plan to use the same infrastructure to write a machine check aware
> "copy_from_user()" that will SIGBUS the calling application when a
> syscall touches poison in user space (just like we do when the application
> touches the poison itself).
>
> I've dropped off the "reviewed-by" tags that I collected back prior to
> adding the new field to the exception table. Please send new ones
> if you can.
>
> Changes

That's some changelog, I tell ya. Well, it took us long enough so for
all 4:

Reviewed-by: Borislav Petkov <bp@xxxxxxx>

--
Regards/Gruss,
Boris.

ECO tip #101: Trim your mails when you reply.