linux-kernel - Re: (subset) [PATCH v6 0/6] Add PSCI v1.3 SYSTEM

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Message-ID: <173039739006.2928363.16193131105108954688.b4-ty@linux.dev>
Date: Thu, 31 Oct 2024 17:56:58 +0000
From: Oliver Upton <oliver.upton@...ux.dev>
To: linux-arm-kernel@...ts.infradead.org,
	Catalin Marinas <catalin.marinas@....com>,
	Pavel Machek <pavel@....cz>,
	Paolo Bonzini <pbonzini@...hat.com>,
	Will Deacon <will@...nel.org>,
	Len Brown <len.brown@...el.com>,
	Shuah Khan <shuah@...nel.org>,
	linux-kselftest@...r.kernel.org,
	kvmarm@...ts.linux.dev,
	David Woodhouse <dwmw@...zon.co.uk>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Francesco Lavra <francescolavra.fl@...il.com>,
	linux-pm@...r.kernel.org,
	David Woodhouse <dwmw2@...radead.org>,
	Jonathan Corbet <corbet@....net>,
	kvm@...r.kernel.org,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Miguel Luis <miguel.luis@...cle.com>,
	linux-kernel@...r.kernel.org,
	James Morse <james.morse@....com>,
	Marc Zyngier <maz@...nel.org>,
	linux-doc@...r.kernel.org,
	Zenghui Yu <yuzenghui@...wei.com>,
	Suzuki K Poulose <suzuki.poulose@....com>
Cc: Oliver Upton <oliver.upton@...ux.dev>
Subject: Re: (subset) [PATCH v6 0/6] Add PSCI v1.3 SYSTEM_OFF2 support for hibernation

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