From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6B903CDB46F for ; Tue, 23 Jun 2026 11:54:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:Cc:To:From: Subject:Message-ID:References:Mime-Version:In-Reply-To:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=QS4Tc9DEF1sakhdO+oEzT9jcpMtmCqHU665RCgQbU7E=; b=HWlz8QJeB3O9oMl6mkTdG3a0Tb Da3q02gbc6ufZMzWgZMSYdMEW+xHs/HfvlFwz937KQJwM4SjY7w5tA34oNNLClyJ/VKw51rX0CEE4 8Wavak+2GxIQYuTtpmiFlA4z1K4dvBwHu6vadVjrcI1FfijHgl9vljt+rAKVCMeBspyo6FhkqZbje TYHfoOele0jlBdbr+sh9toUyvQgAiLZriVlJc4kVkM7a9zAzJCqBdqQS9rbg5l3RKMF63an7Gq4Fl wdKjtMHvacfu8JRtITl1Yj3A1MktApOBP2RTm24RjoozFt0kLeMmvvoY6BW1RM2RG4fW/QrwbF3Kh Sxcqalvg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wbzhn-00000006D3G-2ob9; Tue, 23 Jun 2026 11:54:15 +0000 Received: from mail-wm1-x349.google.com ([2a00:1450:4864:20::349]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wbzhk-00000006D1y-3BwT for linux-arm-kernel@lists.infradead.org; Tue, 23 Jun 2026 11:54:13 +0000 Received: by mail-wm1-x349.google.com with SMTP id 5b1f17b1804b1-490a767c7dcso37088965e9.2 for ; Tue, 23 Jun 2026 04:54:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1782215650; x=1782820450; darn=lists.infradead.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=QS4Tc9DEF1sakhdO+oEzT9jcpMtmCqHU665RCgQbU7E=; b=sZILm/NEFV8cXpsC6Ce/qOPST78HqcgAGkoeQDqrvvyt6ZSOGXEhr+xLbnfvr2Y4Fv omerUWvR0Eadp48kc9r90gwfIUiCEADHOfyE+LHXWsYASVIpXnZiLKVs9b0N96vI+ovN ybcI4iYJixRFRBfvOhWBP+C195kD70I7DBeL36qx+YDoBgz+D4EG5jG4NzuaGz+ZUY3U oDYZ05pyKOlE7B3P5Crk8+PnDUx8rrLDI0hMwWOgSLOJ6wsK6VFZkqNmfMi8Ez99Z7m0 9CfPRcawATq2iA9BHtkHFpna2tNzG/i0s/Dly/kk3US7bA8fE4nhxbF5F0m/L60yeDbY PXwQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782215650; x=1782820450; 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=QS4Tc9DEF1sakhdO+oEzT9jcpMtmCqHU665RCgQbU7E=; b=omYhSeO20nBBLhUJyx8XBPERgyV97HHyCy51PtTTfjwlRVc6pJGVBXiIuC6r72htLO c3olZaENsp4HCg/AD35S3uwZkQcrP+hnImzZ1RSc5ZB9b6bnoITqds0+R0wbuR9ZKLxp YY7qhL/5uzd2nRi9hqtrnzS+a8vWj0nYJQs/OFmO2+4H4gaiqqgX4Ewc5d+bQay8PodT Gnch8TTx2NTLPkn2AK7Z9YceajmBEfbKoDRQrUIt6CORntrnOqB3XdCEQ8ET9x12Dpp+ JPOyqcls0yOI2iEI8iL6xRFBgZAHKKfp8W4DtCVbn1G4fjhZM/T6EZ1roVSN4/+W6+9a YYMg== X-Forwarded-Encrypted: i=1; AFNElJ+GFS6G72tmsPk83c82M72QXDsMpSrdyxv30ALNtMsdbBdojbLSp2LHovYwwPxFf3at7QtEdBQKoel91TeklNH1@lists.infradead.org X-Gm-Message-State: AOJu0YxVl3F38uSneYRz2rTVsnA3VwQByTQlCg3vsK1VyEKNevZLZY5X T8uiDaZtEtZQ/fj2F4aUeqvCj9/B9GAJ6mFBn3tcWjUaYp3uSe7fTmjov1IDcjEZyzWzrKCuKTm lyLA9s2bSZNggESAxkanIiB05452k4A== X-Received: from wmpo6.prod.google.com ([2002:a05:600c:3386:b0:490:9d65:494e]) (user=sebastianene job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:6309:b0:490:b645:3213 with SMTP id 5b1f17b1804b1-4925b3ac32fmr36891085e9.19.1782215650250; Tue, 23 Jun 2026 04:54:10 -0700 (PDT) Date: Tue, 23 Jun 2026 11:53:49 +0000 In-Reply-To: <20260623115354.632361-1-sebastianene@google.com> Mime-Version: 1.0 References: <20260623115354.632361-1-sebastianene@google.com> X-Mailer: git-send-email 2.55.0.rc0.786.g65d90a0328-goog Message-ID: <20260623115354.632361-3-sebastianene@google.com> Subject: [PATCH v5 2/7] KVM: arm64: Forward FFA_NOTIFICATION_BITMAP calls to Trustzone 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" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260623_045412_819494_FED374A3 X-CRM114-Status: GOOD ( 11.80 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Allow FF-A notification bitmap messages to be forwarded to Trustzone from the host kernel driver enforce checking for SBZ fields. Signed-off-by: Sebastian Ene Reviewed-by: Vincent Donnefort --- arch/arm64/kvm/hyp/nvhe/ffa.c | 27 +++++++++++++++++++++++++-- 1 file changed, 25 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kvm/hyp/nvhe/ffa.c b/arch/arm64/kvm/hyp/nvhe/ffa.c index 78bb043b33ee..cc10f48915fa 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_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: @@ -911,6 +909,27 @@ static void do_ffa_part_get(struct arm_smccc_1_2_regs *res, hyp_spin_unlock(&host_buffers.lock); } +static void do_ffa_notif_bitmap(struct arm_smccc_1_2_regs *res, + struct kvm_cpu_context *ctxt) +{ + DECLARE_REG(u32, func_id, ctxt, 0); + DECLARE_REG(u32, vmid, ctxt, 1); + struct arm_smccc_1_2_regs *args; + + if (ffa_check_unused_args_sbz(ctxt, func_id == FFA_NOTIFICATION_BITMAP_CREATE ? 3 : 2)) { + ffa_to_smccc_res(res, FFA_RET_INVALID_PARAMETERS); + return; + } + + if (vmid != 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; @@ -974,6 +993,10 @@ bool kvm_host_ffa_handler(struct kvm_cpu_context *host_ctxt, u32 func_id) case FFA_PARTITION_INFO_GET: do_ffa_part_get(&res, host_ctxt); goto out_handled; + case FFA_NOTIFICATION_BITMAP_CREATE: + case FFA_NOTIFICATION_BITMAP_DESTROY: + do_ffa_notif_bitmap(&res, host_ctxt); + goto out_handled; } if (ffa_call_supported(func_id)) -- 2.55.0.rc0.786.g65d90a0328-goog