From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ed1-f74.google.com (mail-ed1-f74.google.com [209.85.208.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 96A6644E052 for ; Tue, 16 Jun 2026 15:42:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781624544; cv=none; b=DGviC8Hv5QXq7KAPY/Pf+9i4tucAwsQsxneB5Ws0WcEYQaEX0x8eFWoNId3pDLtGbgQSq/3mqrK19nrmCudPPhusEgW7YjhkZlyoU7yKj5Vk3Pl3yH1Yf2uKvNV1tJ4RpFIUPaWrRA8coBsUEXUkoZOKEjSh4A4LzvVPp4+x2HM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781624544; c=relaxed/simple; bh=CFhOdFUCwLNs8cLZxgMkjlbDmUmznFvMU9YSNUAy6Js=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=p8DS+w7t1T/FmaHa+ocNmtTcZW9pUgD1xKP2KkNlw8vW+vzWLZOCHrbm5VFjKV8W4Op5gDF3udenQ6fWL2KfuLpzILP20gmG1OSctAbkESM6bh4VZSIoTz98L3YDK9HeKZlZ+3mAv/n4sf4c2xg42TNXz4XdBfKJ5w7Q5CoiMls= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--sebastianene.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=H5BatDTP; arc=none smtp.client-ip=209.85.208.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--sebastianene.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="H5BatDTP" Received: by mail-ed1-f74.google.com with SMTP id 4fb4d7f45d1cf-68bd951b4bfso4435860a12.2 for ; Tue, 16 Jun 2026 08:42:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1781624542; x=1782229342; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=ougsD+RhXFLaa2VDqlr9/ENvAMMCUbH7DpXmssZWL6k=; b=H5BatDTPTvT0iIiGLqxNe/x308CE/PASZhqneBSEnuTYhJaNtWIhhXWI8/h8DzzLMa JKjy3GJMwJA6aSodDi7A/XOP13XnczZDUlPMUiYiab4YwqiIBLfFDBMqLXQrgWbNPDZO zB+RKA+wWDtQxk7K8MPIrSLWpStoxWtdw+vQzd4ZUPzDXYeEcNIN18Cdg9u6EK2EpxrF 1Cx350jyceHdB1XJDsU5iW2WJi0q7KXfJ3tXyK6L3blFjvvQnw1kthPlQCx8R9dBilNH N8QTEB0NWBxWL0xtnsAEAwNlacLw0ATjlPo6yh4VwH6EB7yzf8xRdR2+ZQyVjilXjjRT PQCw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1781624542; x=1782229342; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=ougsD+RhXFLaa2VDqlr9/ENvAMMCUbH7DpXmssZWL6k=; b=pActA8mbMKsLTWAI4fC7qeWJoG5BtS4hb5M4GNemR/pZmXIAynDphax5lZKw0SCeim Um0kW/ggxEdpIlqW2va3VXmdteOaswi48WkTf1K/TW8iVsOFR1GCKNbpdITblsW9tdL7 7ixiKZWuxhG6sssbnCIVshdYpMQlfml6WNv7euXcVLAUzW9sTuuwmHvs1B9rNHVzi/tK IeWFCvTphjS0LOXwmEGD0L1GO8AwVR1QA85GmmmW03yK+aM6oCzF9vmNNtV5yXCdIGb6 sec7/W/JUSZ3xxUCV+qcZr9+ZFtg1NqPiVY7tmmN0DOYXle/lAwi4lWw01ddw2ixOs4v 4gUA== X-Forwarded-Encrypted: i=1; AFNElJ8GR6FU+lPSU+GWkHU//z2t7+Wp9Yb74h2fNjYuiXpc8BePhf5TVBV0KUyiJwkxd5uorbFA3Oo1PSIWQDw=@vger.kernel.org X-Gm-Message-State: AOJu0Yxs1CyL6zTHawUTKWvgxmiAX89dhPFjV2uSQclTATlAGjfRx0Od DbMs8Z1BVEDymukO++dvNqsmhO8ruNi9s12/rngYT5qLgqHijXJCWWZte+YM12qFiAbrVSnoFSG Y5mfiChOiNDJ0HtCu1WdoMfi4l9u5fw== X-Received: from edxf19.prod.google.com ([2002:a05:6402:14d3:b0:695:4685:bee5]) (user=sebastianene job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6402:5202:b0:689:816a:5367 with SMTP id 4fb4d7f45d1cf-693c696b2e2mr7055459a12.0.1781624541532; Tue, 16 Jun 2026 08:42:21 -0700 (PDT) Date: Tue, 16 Jun 2026 15:41:49 +0000 In-Reply-To: <20260616154149.2763214-1-sebastianene@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260616154149.2763214-1-sebastianene@google.com> X-Mailer: git-send-email 2.54.0.1136.gdb2ca164c4-goog Message-ID: <20260616154149.2763214-8-sebastianene@google.com> Subject: [PATCH v4 7/7] KVM: arm64: Support FFA_NOTIFICATION_INFO_GET in host handler From: Sebastian Ene To: catalin.marinas@arm.com, maz@kernel.org, oupton@kernel.org, will@kernel.org Cc: joey.gouly@arm.com, korneld@google.com, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, android-kvm@google.com, mrigendra.chaubey@gmail.com, perlarsen@google.com, sebastianene@google.com, suzuki.poulose@arm.com, vdonnefort@google.com, yuzenghui@huawei.com Content-Type: text/plain; charset="UTF-8" Allow the host to query the FF-A notifiction status and proxy the info get message to Trustzone. Make sure that the SBZ fields are enforced. Signed-off-by: Sebastian Ene --- arch/arm64/kvm/hyp/nvhe/ffa.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kvm/hyp/nvhe/ffa.c b/arch/arm64/kvm/hyp/nvhe/ffa.c index de4794338388..ffb6d44b5010 100644 --- a/arch/arm64/kvm/hyp/nvhe/ffa.c +++ b/arch/arm64/kvm/hyp/nvhe/ffa.c @@ -715,8 +715,6 @@ 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_INFO_GET: /* Optional interfaces added in FF-A 1.2 */ case FFA_MSG_SEND_DIRECT_REQ2: /* Optional per 7.5.1 */ case FFA_MSG_SEND_DIRECT_RESP2: /* Optional per 7.5.1 */ @@ -1026,6 +1024,20 @@ static void do_ffa_notif_get(struct arm_smccc_1_2_regs *res, hyp_smccc_1_2_smc(args, res); } +static void do_ffa_notif_info_get(struct arm_smccc_1_2_regs *res, + struct kvm_cpu_context *ctxt) +{ + struct arm_smccc_1_2_regs *args; + + if (ffa_check_unused_args_sbz(ctxt, 1)) { + ffa_to_smccc_res(res, FFA_RET_INVALID_PARAMETERS); + return; + } + + args = (void *)&ctxt->regs.regs[0]; + hyp_smccc_1_2_smc(args, res); +} + bool kvm_host_ffa_handler(struct kvm_cpu_context *host_ctxt, u32 func_id) { struct arm_smccc_1_2_regs res; @@ -1100,6 +1112,9 @@ bool kvm_host_ffa_handler(struct kvm_cpu_context *host_ctxt, u32 func_id) case FFA_NOTIFICATION_GET: do_ffa_notif_get(&res, host_ctxt); goto out_handled; + case FFA_NOTIFICATION_INFO_GET: + do_ffa_notif_info_get(&res, host_ctxt); + goto out_handled; } if (ffa_call_supported(func_id)) -- 2.54.0.1136.gdb2ca164c4-goog