Re: [PATCH v2 2/6] arm64: Move kill_cpu_early to smp.c

[Suzuki K. Poulose]

On 01/12/15 17:52, Mark Rutland wrote:
> On Tue, Dec 01, 2015 at 05:38:54PM +0000, Suzuki K. Poulose wrote:
> > On 01/12/15 16:31, Mark Rutland wrote:
>
> [...]
>
> > > We need stuck-in-the-kernel flag to account for CPUs which didn't manage
> > > to turn the MMU on (which are either in the spin-table, or failed when
> > > they were individually onlined).
> >
> > Did you mean to say "turn the MMU off" ?
>
> No, I mean CPUs which were unable to turn the MMU on in the first place.
> Perhaps they entered the spin-table but were never individually onlined,
> perhaps they didn't support the kernel page size, etc.
>
> When CPUs exit the kernel via PSCI they never switch the MMU off within
> the kernel.

OK. So the flag will also be used for CPUs which are stuck-in-the-kernel
with MMU turned on. e.g, a CPU (using spin-table) we try to bring down
in kill_cpu_early(). Correct ?

Thanks
Suzuki

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