Re: kern/55406 (NVMM panic on qemu start on intel)

[nia <nia%NetBSD.org@localhost>]

On Tue, Jun 23, 2020 at 05:15:02PM +0000, Maxime Villard wrote:
>  Le 23/06/2020 à 19:07, nia a écrit :
>  > On Tue, Jun 23, 2020 at 04:11:00PM +0000, maxv%NetBSD.org@localhost wrote:
>  >> Did you suspend your host before launching the VM?
>  > 
>  > Probably, the host rarely gets powered off but does get suspended
>  > every night.
>  
>  Well, that's where the problem comes from. I didn't put a sleep handler for
>  NVMM, so when the CPU wakes up it can go crazy.
>  
>  In fact, it can go crazy for many other reasons, because many x86 states
>  are not restored properly at wake-up time.
>  
>  For now I wouldn't recommend using sleep states at all.

Can NVMM refuse to run on a system that has been resumed until this is fixed?
This would at least help avoid accidental unclean shutdowns.