From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f73.google.com (mail-wr1-f73.google.com [209.85.221.73]) (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 7FE513E51DB for ; Fri, 26 Jun 2026 07:46:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.73 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782459966; cv=none; b=KjVxp8OIVfPLCsAWLwoz/Tgwe8nm9uMxfJUXGVd5fg6qcTVUQDvDXfTWlY7HbBF7UaktwZrs7DPeQSxls6F307bttrZFEv7kVA4uGC52X7eg2z6HfOiTZXOagqDhtF0jHrgUnYyfac8CJMk8GjK/o7zVsxJpjOKpncnae5z9JEY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782459966; c=relaxed/simple; bh=tKYP+GZEflyKSlmPC4K0hHDZmwBpOjHjHt0haihLqJ0=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=ZLHsKrSbba/lG9LfMSJFdi7Hxhjd4Re3h3m5UW9OBXWOcBa1k5ny4Llkk3dv3aGrZ61SPpdTmrplsfVTUTkiortZPhk4VatkWZ+ymbYVMUm9KUXLFtH8qNP0NAOvDnmlXauHdsR0lrZvR51n0CaRyKYg2NqLEW3Zgot5U/I4NRo= 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=ALQ2qDHB; arc=none smtp.client-ip=209.85.221.73 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="ALQ2qDHB" Received: by mail-wr1-f73.google.com with SMTP id ffacd0b85a97d-460153ce644so338016f8f.0 for ; Fri, 26 Jun 2026 00:46:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1782459962; x=1783064762; darn=lists.linux.dev; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=+Nwcle4m1xhjtWQ5cG6kqMRZxeBIvD7DoAMnMMXwmNs=; b=ALQ2qDHBUtxebTHwcEKLWOn87WvOolQGPcnhloRbOXhrKAvKr/ElUzSdO6C987pSYR +G4R1vd3sIpC3boXT+rrBwD60+wIRlhoJffTrOOkRN9NMT0d+HuYGatul4z6Gc6OSu4z NHIL+uV50UN0suPiIApe/dc1uffDPBbyvZkGlg65dL5lJlhnlpoSTpemJY4r/33ZOmHh 7bVmuDhqwRFrKxpOrcQGrNY78bhDYM5M0/NebiNbmpUkJ1JiCZa/edOe3JccN+3HnwU7 Qk+teZLygJmmJAEAIUpDNMMeu2FP9KvTkoFb/zwG8fKgczdqn/BWEq4MqpvQc/qn+7fe ZSaw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782459962; x=1783064762; 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=+Nwcle4m1xhjtWQ5cG6kqMRZxeBIvD7DoAMnMMXwmNs=; b=QexK/K6pbpt9cVAZzkivNNy+C/ZAQNo5Jc5u/D9qeZ171ViGehxNgtvBrjxecSAZj+ 9iGBFe/Aw0VOQ1PxbSnjiJEeZqw5Gr5emxdqtLnrW5ha/DBMD3T7FgrWGJrP0vY0Ok4d Fn7Mw6aJBT1ypxIbPXsVxT2j8dIwMhyVFvfG2ur1q8w0cU8IHebrQhQDWu5M9oiZMUb3 JP1rr5u+eWEfuYh8FhJUfQL561xbdO/ZZSLcp+NhJWKEdjU4WYu9KuFBzZATW45/179H U2YUhOaDdR33H41jvnj2htJ/me9eN5Sf8BHGjc2/LuLmUwnFSo8tlGcrFZMLKZ+Ca+SV SSkA== X-Forwarded-Encrypted: i=1; AHgh+Rr2legZzbmsZZS2qc9QFJA6lfXtgQOrNmQMVSlMyk95mw+PodWYc/J7EYl1LcPNNBm2QNVTciY=@lists.linux.dev X-Gm-Message-State: AOJu0YzCgFr/+Iwfvr3nts68EKJcw3IBrDXiRvPHe/NWYXBKQJoc6Qub kF56/Hiw3EkITdSKrcUWwqwIcHsKZqQlZZ7uhwPv06TJnt13joGsheb7w6bufWAUFIO4BN8fII0 sll9jA29ZneylCkQMN9/EtSe04K52zw== X-Received: from wrbfy3.prod.google.com ([2002:a05:6000:2d83:b0:468:50b5:41e]) (user=sebastianene job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6000:1acb:b0:462:6aa1:4393 with SMTP id ffacd0b85a97d-46dbfe8cd41mr9176038f8f.4.1782459961593; Fri, 26 Jun 2026 00:46:01 -0700 (PDT) Date: Fri, 26 Jun 2026 07:45:41 +0000 In-Reply-To: <20260626074545.433234-1-sebastianene@google.com> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260626074545.433234-1-sebastianene@google.com> X-Mailer: git-send-email 2.55.0.rc0.799.gd6f94ed593-goog Message-ID: <20260626074545.433234-4-sebastianene@google.com> Subject: [PATCH v6 3/7] KVM: arm64: Support FFA_NOTIFICATION_UNBIND 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" Verify the arguments of the FF-A notification unbind call and forward the message to Trustzone. Signed-off-by: Sebastian Ene Reviewed-by: Vincent Donnefort --- arch/arm64/kvm/hyp/nvhe/ffa.c | 25 ++++++++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kvm/hyp/nvhe/ffa.c b/arch/arm64/kvm/hyp/nvhe/ffa.c index 331d9d0d8287..d52d7c4d5e7f 100644 --- a/arch/arm64/kvm/hyp/nvhe/ffa.c +++ b/arch/arm64/kvm/hyp/nvhe/ffa.c @@ -678,7 +678,6 @@ static bool ffa_call_supported(u64 func_id) case FFA_MEM_DONATE: case FFA_MEM_RETRIEVE_REQ: /* Optional notification interfaces added in FF-A 1.1 */ - case FFA_NOTIFICATION_UNBIND: case FFA_NOTIFICATION_SET: case FFA_NOTIFICATION_GET: case FFA_NOTIFICATION_INFO_GET: @@ -897,6 +896,27 @@ static void do_ffa_notif_bind(struct arm_smccc_1_2_regs *res, hyp_smccc_1_2_smc(args, res); } +static void do_ffa_notif_unbind(struct arm_smccc_1_2_regs *res, + struct kvm_cpu_context *ctxt) +{ + DECLARE_REG(u32, endp_id, ctxt, 1); + DECLARE_REG(u32, reserved, ctxt, 2); + struct arm_smccc_1_2_regs *args; + + if (reserved) { + ffa_to_smccc_res(res, FFA_RET_INVALID_PARAMETERS); + return; + } + + if (FIELD_GET(FFA_NOTIF_RECEIVER_ENDP_MASK, endp_id) != HOST_FFA_ID) { + 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; @@ -962,6 +982,9 @@ bool kvm_host_ffa_handler(struct kvm_cpu_context *host_ctxt, u32 func_id) case FFA_NOTIFICATION_BIND: do_ffa_notif_bind(&res, host_ctxt); goto out_handled; + case FFA_NOTIFICATION_UNBIND: + do_ffa_notif_unbind(&res, host_ctxt); + goto out_handled; } if (ffa_call_supported(func_id)) -- 2.55.0.rc0.799.gd6f94ed593-goog