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Message-Id: <20250627-virtio-msg-ffa-v6-3-8c02fd94edac@google.com>
Date: Fri, 27 Jun 2025 07:12:27 +0000
From: Per Larsen via B4 Relay <devnull+perlarsen.google.com@...nel.org>
To: Marc Zyngier <maz@...nel.org>, 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>
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,
Per Larsen <perlarsen@...gle.com>
Subject: [PATCH v6 3/5] KVM: arm64: Mark FFA_NOTIFICATION_* calls as
unsupported
From: Per Larsen <perlarsen@...gle.com>
Prevent FFA_NOTIFICATION_* interfaces from being passed through to TZ.
Acked-by: Will Deacon <will@...nel.org>
Signed-off-by: Per Larsen <perlarsen@...gle.com>
---
arch/arm64/kvm/hyp/nvhe/ffa.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/arch/arm64/kvm/hyp/nvhe/ffa.c b/arch/arm64/kvm/hyp/nvhe/ffa.c
index 65d241ba32403d014b43cc4ef4d5bf9693813809..5fd6474d96ae4b90d99796ee81bb36373219afc4 100644
--- a/arch/arm64/kvm/hyp/nvhe/ffa.c
+++ b/arch/arm64/kvm/hyp/nvhe/ffa.c
@@ -670,6 +670,14 @@ static bool ffa_call_supported(u64 func_id)
case FFA_RXTX_MAP:
case FFA_MEM_DONATE:
case FFA_MEM_RETRIEVE_REQ:
+ /* Optional notification interfaces added in FF-A 1.1 */
+ case FFA_NOTIFICATION_BITMAP_CREATE:
+ case FFA_NOTIFICATION_BITMAP_DESTROY:
+ case FFA_NOTIFICATION_BIND:
+ case FFA_NOTIFICATION_UNBIND:
+ case FFA_NOTIFICATION_SET:
+ case FFA_NOTIFICATION_GET:
+ case FFA_NOTIFICATION_INFO_GET:
return false;
}
--
2.50.0.727.gbf7dc18ff4-goog
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