On Sat, 19 Oct 2024 18:15:41 +0100, David Woodhouse wrote:

The PSCI v1.3 spec (https://developer.arm.com/documentation/den0022)
adds support for a SYSTEM_OFF2 function enabling a HIBERNATE_OFF state
which is analogous to ACPI S4. This will allow hosting environments to
determine that a guest is hibernated rather than just powered off, and
ensure that they preserve the virtual environment appropriately to
allow the guest to resume safely (or bump the hardware_signature in the
FACS to trigger a clean reboot instead).

[...]

Thanks Catalin for the ack, as promised:

Applied to kvmarm/next, thanks!

[6/6] arm64: Use SYSTEM_OFF2 PSCI call to power off for hibernate
      https://git.kernel.org/kvmarm/kvmarm/c/3e251afaec9a

--
Best,
Oliver