Re: (subset) [PATCH V2 0/4] Remove WARN_ON in save_processor_state

[Palmer Dabbelt]

On Wed, 21 Jun 2023 08:51:43 PDT (-0700), Catalin Marinas wrote:
> On Fri, 09 Jun 2023 15:50:45 +0800, Song Shuai wrote:
> > During hibernation or restoration, freeze_secondary_cpus
> > checks num_online_cpus via BUG_ON, and the subsequent
> > save_processor_state also does the checking with WARN_ON.
> >
> > In the case of CONFIG_PM_SLEEP_SMP=n, freeze_secondary_cpus
> > is not defined, but the sole possible condition to disable
> > CONFIG_PM_SLEEP_SMP is !SMP where num_online_cpus is always 1.
> > We also don't have to check it in save_processor_state.
> >
> > [...]
>
> Applied to arm64 (for-next/misc), thanks!
>
> I couldn't tell whether this series would go in as a whole but given
> that the patches are independent, I picked up the arm64 one.
>
> [2/4] arm64: hibernate: remove WARN_ON in save_processor_state
>       https://git.kernel.org/arm64/c/615af0021a61

I was pretty much in the same spot until I saw this, so I'm picking the 
RISC-V bit and just ignoring the rest.  It's testing so it might take a bit to
land in linux-next, but seems pretty safe.