Re: [PATCH v2] arm64: Disallow disabling boot CPU based on config

[Sudeep Holla]

(It is always good to cc all PSCI maintainer for any ARM64 CPU
hotpug/suspend related changes)

On Fri, Jul 03, 2026 at 04:50:02PM +0530, Sneh Mankad wrote:
> The Qualcomm SoCs like LeMans, Monaco support suspend to ram which leads
> the SoC to ACPI S3 similar state where SoC is turned off and DDR is
> retained. The hardware design on these SoCs forces a constraint to suspend
> and resume the system on boot CPU / CPU0.
>
And you fail to explain why they have that constraint.

Is it because some secure context is not allowed to migrate ?

We already have a mechanism for that in place and this hack is not at all
required.

-- 
Regards,
Sudeep