linux-kernel - Re: [PATCH v11 0/6] KVM: arm64: Support FF-A 1.2

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Message-Id: <175792995612.521593.7894673693279210618.b4-ty@kernel.org>
Date: Mon, 15 Sep 2025 10:53:15 +0100
From: Marc Zyngier <maz@...nel.org>
To: Oliver Upton <oliver.upton@...ux.dev>,
	Joey Gouly <joey.gouly@....com>,
	Suzuki K Poulose <suzuki.poulose@....com>,
	Zenghui Yu <yuzenghui@...wei.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	Sudeep Holla <sudeep.holla@....com>,
	Per Larsen <perlarsen@...gle.com>
Cc: linux-arm-kernel@...ts.infradead.org,
	kvmarm@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	ahomescu@...gle.com,
	armellel@...gle.com,
	arve@...roid.com,
	ayrton@...gle.com,
	qperret@...gle.com,
	sebastianene@...gle.com,
	qwandor@...gle.com
Subject: Re: [PATCH v11 0/6] KVM: arm64: Support FF-A 1.2

On Wed, 20 Aug 2025 01:10:04 +0000, Per Larsen wrote:
> The FF-A 1.2 specification introduces a new SEND_DIRECT2 ABI which
> allows registers x4-x17 to be used for the message payload. This patch
> set prevents the host from using a lower FF-A version than what has
> already been negotiated with the hypervisor. This is necessary because
> the hypervisor does not have the necessary compatibility paths to
> translate from the hypervisor FF-A version to a previous version.
> 
> [...]

Applied to next, thanks!

[1/6] KVM: arm64: Correct return value on host version downgrade attempt
      commit: f414269392443f666bd8bef0cb3f0b53d5147be3
[2/6] KVM: arm64: Use SMCCC 1.2 for FF-A initialization and in host handler
      commit: 6f4c348b1d5c08f1105e645700962cc4353a8ac9
[3/6] KVM: arm64: Mark FFA_NOTIFICATION_* calls as unsupported
      commit: 79195f342417ff773048515964707aba3bfe0e41
[4/6] KVM: arm64: Mark optional FF-A 1.2 interfaces as unsupported
      commit: 8d24683e3e0f93b4bfdb558df50923514042817b
[5/6] KVM: arm64: Mask response to FFA_FEATURE call
      commit: 3f5952917498e7bb9d227812d4349668f62c413b
[6/6] KVM: arm64: Bump the supported version of FF-A to 1.2
      commit: 162190f2ccdc5964efa2a26e9fc3e56cf80fc29b

Cheers,

	M.
-- 
Without deviation from the norm, progress is not possible.