linux-kernel - Re: [RFC PATCH v3 2/5] KVM: arm64: Add support for PSCI v1.2 and v1.3

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Message-ID: <9d7aa4d80afedd6a9d203f28d53f0d272b442850.camel@infradead.org>
Date: Tue, 19 Mar 2024 15:52:14 +0000
From: David Woodhouse <dwmw2@...radead.org>
To: Oliver Upton <oliver.upton@...ux.dev>
Cc: linux-arm-kernel@...ts.infradead.org, kvm@...r.kernel.org, Paolo Bonzini
 <pbonzini@...hat.com>, Jonathan Corbet <corbet@....net>, Marc Zyngier
 <maz@...nel.org>, James Morse <james.morse@....com>, Suzuki K Poulose
 <suzuki.poulose@....com>, Zenghui Yu <yuzenghui@...wei.com>, Catalin
 Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, Mark
 Rutland <mark.rutland@....com>, Lorenzo Pieralisi <lpieralisi@...nel.org>,
 "Rafael J. Wysocki" <rafael@...nel.org>, Len Brown <len.brown@...el.com>,
 Pavel Machek <pavel@....cz>, Mostafa Saleh <smostafa@...gle.com>,
 Jean-Philippe Brucker <jean-philippe@...aro.org>, 
 linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
 kvmarm@...ts.linux.dev,  linux-pm@...r.kernel.org
Subject: Re: [RFC PATCH v3 2/5] KVM: arm64: Add support for PSCI v1.2 and
 v1.3

On Tue, 2024-03-19 at 08:42 -0700, Oliver Upton wrote:
> On Tue, Mar 19, 2024 at 12:59:03PM +0000, David Woodhouse wrote:
> > From: David Woodhouse <dwmw@...zon.co.uk>
> > 
> > Since the v1.3 specification is still in Alpha, only default to v1.2
> > unless userspace explicitly requests v1.3 for now.
> 
> The ABI is final the moment we take this, alpha or not. Let's just
> advertise v1.3 from the start and only apply the series when things are
> ready to go.

Makes sense.

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