Re: [RFC PATCH 2/2] arm64: Use SYSTEM_OFF2 PSCI call to power off for hibernate

Sudeep Holla
2024-03-14T11:09:18Z

On Wed, Mar 13, 2024 at 03:34:44PM +0000, Sudeep Holla wrote:
> On Tue, Mar 12, 2024 at 04:36:05PM +0000, David Woodhouse wrote:
> > On Tue, 2024-03-12 at 15:57 +0000, Sudeep Holla wrote:
> > > Looked briefly at register_sys_off_handler and it should be OK to call
> > > it from psci_init_system_off2() below. Any particular reason for having
> > > separate initcall to do this ? We can even eliminate the need for
> > > psci_init_system_off2 if it can be called from there. What am I missing ?
> >
> > My first attempt did that. I don't think we can kmalloc that early:
> >
>
> That was was initial guess. But a quick hack on my setup and running it on
> the FVP model didn't complain. I think either I messed up or something else
> wrong, I must check on some h/w. Anyways sorry for the noise and thanks for
> the response.
>

OK, it was indeed giving -ENOMEM which in my hack didn't get propogated
properly 🙁. I assume you have some configs that is resulting in the
crash instead of -ENOMEM as I see in my setup(FVP as well as hardware).

Sorry for the noise.

--
Regards,
Sudeep