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

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Message-ID: <ZyN09BSZqKLXLi6_@arm.com>
Date: Thu, 31 Oct 2024 12:15:48 +0000
From: Catalin Marinas <catalin.marinas@....com>
To: Oliver Upton <oliver.upton@...ux.dev>
Cc: Zenghui Yu <yuzenghui@...wei.com>, James Morse <james.morse@....com>,
	linux-doc@...r.kernel.org, David Woodhouse <dwmw2@...radead.org>,
	Marc Zyngier <maz@...nel.org>, Jonathan Corbet <corbet@....net>,
	kvmarm@...ts.linux.dev, Len Brown <len.brown@...el.com>,
	Mark Rutland <mark.rutland@....com>, linux-kernel@...r.kernel.org,
	Pavel Machek <pavel@....cz>, Shuah Khan <shuah@...nel.org>,
	kvm@...r.kernel.org, Suzuki K Poulose <suzuki.poulose@....com>,
	David Woodhouse <dwmw@...zon.co.uk>,
	Miguel Luis <miguel.luis@...cle.com>, Will Deacon <will@...nel.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Paolo Bonzini <pbonzini@...hat.com>,
	linux-kselftest@...r.kernel.org,
	Francesco Lavra <francescolavra.fl@...il.com>,
	Lorenzo Pieralisi <lpieralisi@...nel.org>, linux-pm@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: (subset) [PATCH v6 0/6] Add PSCI v1.3 SYSTEM_OFF2 support for
 hibernation

On Fri, Oct 25, 2024 at 10:12:41PM +0000, Oliver Upton wrote:
> 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).
> > 
> > [...]
> 
> I grabbed the KVM portions of this series, as they look ready to go. Happy
> to take the last one through kvmarm tree w/ acks, and can toss it on top.

Happy for you to take the last patch as well through the KVM tree. Feel
free to adjust the code comment as you see fit.

-- 
Catalin