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From: Per Larsen via B4 Relay <devnull+perlarsen.google.com@kernel.org>
To: Marc Zyngier <maz@kernel.org>,
	Oliver Upton <oliver.upton@linux.dev>,
	 Joey Gouly <joey.gouly@arm.com>,
	Suzuki K Poulose <suzuki.poulose@arm.com>,
	 Zenghui Yu <yuzenghui@huawei.com>,
	 Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will@kernel.org>,
	 Sudeep Holla <sudeep.holla@arm.com>
Cc: linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
	 linux-kernel@vger.kernel.org, ahomescu@google.com,
	armellel@google.com,  arve@android.com, ayrton@google.com,
	qperret@google.com,  sebastianene@google.com, qwandor@google.com,
	 Per Larsen <perlarsen@google.com>
Subject: [PATCH v8 6/7] KVM: arm64: Bump the supported version of FF-A to 1.2
Date: Sat, 19 Jul 2025 02:11:28 +0000	[thread overview]
Message-ID: <20250719-virtio-msg-ffa-v8-6-03e8e8dbe856@google.com> (raw)
In-Reply-To: <20250719-virtio-msg-ffa-v8-0-03e8e8dbe856@google.com>

From: Per Larsen <perlarsen@google.com>

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.

Co-developed-by: Ayrton Munoz <ayrton@google.com>
Signed-off-by: Ayrton Munoz <ayrton@google.com>
Signed-off-by: Per Larsen <perlarsen@google.com>
---
 arch/arm64/kvm/hyp/nvhe/ffa.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/kvm/hyp/nvhe/ffa.c b/arch/arm64/kvm/hyp/nvhe/ffa.c
index 2cbecc9af5d27a9e7c8497001cf9b0987c72bdb4..f6d964df53c3e21ba85984f35cc7b6859012d1b0 100644
--- a/arch/arm64/kvm/hyp/nvhe/ffa.c
+++ b/arch/arm64/kvm/hyp/nvhe/ffa.c
@@ -930,7 +930,7 @@ int hyp_ffa_init(void *pages)
 
 	arm_smccc_1_2_smc(&(struct arm_smccc_1_2_regs) {
 		.a0 = FFA_VERSION,
-		.a1 = FFA_VERSION_1_1,
+		.a1 = FFA_VERSION_1_2,
 	}, &res);
 	if (res.a0 == FFA_RET_NOT_SUPPORTED)
 		return 0;
@@ -951,10 +951,10 @@ int hyp_ffa_init(void *pages)
 	if (FFA_MAJOR_VERSION(res.a0) != 1)
 		return -EOPNOTSUPP;
 
-	if (FFA_MINOR_VERSION(res.a0) < FFA_MINOR_VERSION(FFA_VERSION_1_1))
+	if (FFA_MINOR_VERSION(res.a0) < FFA_MINOR_VERSION(FFA_VERSION_1_2))
 		hyp_ffa_version = res.a0;
 	else
-		hyp_ffa_version = FFA_VERSION_1_1;
+		hyp_ffa_version = FFA_VERSION_1_2;
 
 	tx = pages;
 	pages += KVM_FFA_MBOX_NR_PAGES * PAGE_SIZE;

-- 
2.50.0.727.gbf7dc18ff4-goog



  parent reply	other threads:[~2025-07-19  2:11 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-07-19  2:11 [PATCH v8 0/7] KVM: arm64: Support FF-A 1.2 and SEND_DIRECT2 ABI Per Larsen via B4 Relay
2025-07-19  2:11 ` [PATCH v8 1/7] KVM: arm64: Correct return value on host version downgrade attempt Per Larsen via B4 Relay
2025-07-19  2:11 ` [PATCH v8 2/7] KVM: arm64: Use SMCCC 1.2 for FF-A initialization and in host handler Per Larsen via B4 Relay
2025-07-19  2:11 ` [PATCH v8 3/7] KVM: arm64: Mark FFA_NOTIFICATION_* calls as unsupported Per Larsen via B4 Relay
2025-07-19  2:11 ` [PATCH v8 4/7] KVM: arm64: Mark optional FF-A 1.2 interfaces " Per Larsen via B4 Relay
2025-07-29 15:45   ` Will Deacon
2025-07-19  2:11 ` [PATCH v8 5/7] KVM: arm64: Mask response to FFA_FEATURE call Per Larsen via B4 Relay
2025-07-29 15:46   ` Will Deacon
2025-07-19  2:11 ` Per Larsen via B4 Relay [this message]
2025-07-29 15:49   ` [PATCH v8 6/7] KVM: arm64: Bump the supported version of FF-A to 1.2 Will Deacon
2025-07-19  2:11 ` [PATCH v8 7/7] KVM: arm64: Support FFA_MSG_SEND_DIRECT_REQ2 in host handler Per Larsen via B4 Relay
2025-07-29 15:54   ` Will Deacon

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