Re: [PATCH v5 0/9] Improve non-"safe" MSR access failure handling

From: Linus Torvalds
Date: Sat Apr 02 2016 - 11:21:51 EST


On Sat, Apr 2, 2016 at 10:13 AM, Andy Lutomirski <luto@xxxxxxxxxxxxxx> wrote:
>
> I also tried a bad wrmsrl at a couple early points. Very very early
> it just works with not warning. A little later and it prints the
> warning.

Ok, that sounds like the correct behavior - I'm sure the very very
early ones "warned" too, it just got dropped on the floor due to being
before the printing/logging was up and running.

And even then, it's obviously much better than having machines
mysteriously just reboot.

Thanks,
Linus