linux-kernel - Re: [PATCH 2/3] KVM: arm64: Bump the supported version of FF-A to 1.2

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Message-ID: <86plgrgzxh.wl-maz@kernel.org>
Date: Fri, 02 May 2025 09:49:30 +0100
From: Marc Zyngier <maz@...nel.org>
To: Per Larsen <perl@...unant.com>
Cc: linux-kernel@...r.kernel.org,
	"qperret@...gle.com" <qperret@...gle.com>,
	"sebastianene@...gle.com" <sebastianene@...gle.com>,
	kernel-team@...roid.com,
	"will@...nel.org" <will@...nel.org>,
	"sudeep.holla@....com" <sudeep.holla@....com>,
	linux-arm-kernel@...ts.infradead.org,
	kvmarm@...ts.linux.dev,
	"catalin.marinas@....com" <catalin.marinas@....com>,
	yuzenghui@...wei.com,
	Armelle Laine <armellel@...gle.com>,
	arve@...roid.org
Subject: Re: [PATCH 2/3] KVM: arm64: Bump the supported version of FF-A to 1.2

On Fri, 02 May 2025 04:53:51 +0100,
Per Larsen <perl@...unant.com> wrote:
> 
> FF-A version 1.2 introduces the DIRECT_REQ2 ABI. Bump the FF-A version
> preferred by the hypervisor as a precursor to implementing the 1.2-only
> FFA_MSG_SEND_DIRECT_REQ2 and FFA_MSG_SEND_RESP2 messaging interfaces.
> 
> We must also use SMCCC 1.2 for 64-bit SMCs if hypervisor negotiated FF-A
> 1.2, so ffa_set_retval is updated and a new function to call 64-bit smcs
> using SMCCC 1.2 with fallback to SMCCC 1.1 is introduced.
> 
> Update deny-list in ffa_call_supported to mark FFA_NOTIFICATION_* and
> interfaces added in FF-A 1.2 as unsupported lest they get forwarded.
> 
> Signed-off-by: Ayrton Munoz <ayrton@...gle.com>
> Signed-off-by: Per Larsen <perlarsen@...gle.com>
> Signed-off-by: Per Larsen <perl@...unant.com>

Who is the author of this patch? Please follow the documentation when
it comes to patch attribution.

	M.

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