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 E79ABCDE00E for ; Fri, 26 Jun 2026 07:46:13 +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=x/ufGm0/gR8nHfEhXcbUb8L6QO2HXRkkGS5TfPgnqx4=; b=K0qWW4C0+Dse+zGFoQctIQmo6P YDMWfwJavarR6lkTH8pp/JM/NGHi7DS53j0uvu39mgRYgo6qDp7a49XqpcrJpVyZ+YOi4aog7JKr7 dJMwY+GTMShoEnDOVNEwAjE2tnJYYQpTJYi4GgWqypzFFPtJf+RViahPLndsKZyGHMiM58Hfe6Jjz NcDjLqPoCXrv/+qVQsi79GocNLuJV+NLMrgE+kZ45/mTJhjfhaer8OqCSLPfVCn6gO1ParT2s8nHI iL+5PE2WBhUsTuf/ROCat+D6ZFiEC9pjlQF6gdHKqQgys/8WVT3Uh4CgTpO/Rt1c40AsEj/7mU31o eFmNpeag==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wd1GI-0000000Ahbi-1nc3; Fri, 26 Jun 2026 07:46:06 +0000 Received: from mail-wr1-x44a.google.com ([2a00:1450:4864:20::44a]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wd1GE-0000000AhYI-1YDX for linux-arm-kernel@lists.infradead.org; Fri, 26 Jun 2026 07:46:03 +0000 Received: by mail-wr1-x44a.google.com with SMTP id ffacd0b85a97d-4642a5651d4so516541f8f.2 for ; Fri, 26 Jun 2026 00:46:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1782459960; x=1783064760; 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=x/ufGm0/gR8nHfEhXcbUb8L6QO2HXRkkGS5TfPgnqx4=; b=QNecLeecmgk4Mxl8JqlbIvSUA8g0IN/BqKLt1/CPEnWUsg2d6XPd57RSD63mX992Ss n6xpFdWUhWPpkwc/iV67i6R0uIZsrZn7oE2CcwWMinXKyix6LCMxfokjq5sbAEzTH3qP yc0vjgzD64SNzuiJwc1mQvWVNueuXAeCm+NFdruydZX0ZwacOgwPmNR4tuvSAKgMLFNn lhYtApIj+xsHJO492shyyV4yZAAle6ZR/y3v7NwPFSM9XXwNjopSt9MkK0E6FRTjlaY/ /tTw5jGFiZdXr9SH94O0dzAXnY0qt6FXf7Bq75Ox6sC/lALbfkpOrlOJ5L8xTujm/BQU bVvw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782459960; x=1783064760; 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=x/ufGm0/gR8nHfEhXcbUb8L6QO2HXRkkGS5TfPgnqx4=; b=LswJAuA4ysHVNSSyfa09FPkAYKuFB6nCj27USN1BsNWw9JfABrwpXO2Yf+ipffx9aH EDzGH6UJ7N3+H6J4noHc/8/zx5Q1hVRkNupi5/AU9LHjNgnerR38ogRcFpck2p/82kNC xgXNa+svLI9uHp8t4jpe/yDd8Z9Od4s7aej0eqcMEbMWTH2Og1sg0dqqOJ2zHtC0WrBN Awb9C6hODQFkgKdguguUEgLAebVw+HajGZtEqAS5VcsjfQumt7TPOOIm2j9Pyf+naEBC Lb3pTv+Spobbztx67SQTv9TCIXVwNz7UqDrwGXHcvYwivS2pAsasmTxYttx8CRsnonTA Veag== X-Forwarded-Encrypted: i=1; AFNElJ+LL7GDoNhcTFeSFGjTl4oRiDkkHNoAdR6ZmUmnqdMB0eID8x7IT0AlaVAx1jINaBcbDSSy92kOItiwakkus0hc@lists.infradead.org X-Gm-Message-State: AOJu0YyHIYm8gGadDZslX8/CplbpsOH3Q+HQ4e6QEOI7LuAnfvlpLRyy WGOuK+ZcsCB2Dv+O/Ce9+dMgpjWpBLLOjq9KyX85Enx+G2Z2d0NW3epX0z7HE90p1I4lRtVMQxM noWHFLCR2aNtbQFQlE40gClXompQrHg== X-Received: from wmbjp13.prod.google.com ([2002:a05:600c:558d:b0:492:48ca:10da]) (user=sebastianene job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:46c3:b0:492:699e:3113 with SMTP id 5b1f17b1804b1-492699e319cmr34534395e9.35.1782459959740; Fri, 26 Jun 2026 00:45:59 -0700 (PDT) Date: Fri, 26 Jun 2026 07:45:40 +0000 In-Reply-To: <20260626074545.433234-1-sebastianene@google.com> 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: <20260626074545.433234-3-sebastianene@google.com> Subject: [PATCH v6 2/7] KVM: arm64: Support FFA_NOTIFICATION_BIND 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" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260626_004602_438421_BACF4D0D X-CRM114-Status: GOOD ( 14.01 ) 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 Verify the arguments of the FF-A notification bind call and forward the message to Trustzone. Signed-off-by: Sebastian Ene Reviewed-by: Vincent Donnefort --- arch/arm64/kvm/hyp/nvhe/ffa.c | 27 ++++++++++++++++++++++++++- 1 file changed, 26 insertions(+), 1 deletion(-) diff --git a/arch/arm64/kvm/hyp/nvhe/ffa.c b/arch/arm64/kvm/hyp/nvhe/ffa.c index ecc13b795f2c..331d9d0d8287 100644 --- a/arch/arm64/kvm/hyp/nvhe/ffa.c +++ b/arch/arm64/kvm/hyp/nvhe/ffa.c @@ -42,6 +42,8 @@ */ #define HOST_FFA_ID 0 +#define FFA_NOTIF_RECEIVER_ENDP_MASK GENMASK(15, 0) + /* * A buffer to hold the maximum descriptor size we can see from the host, * which is required when the SPMD returns a fragmented FFA_MEM_RETRIEVE_RESP @@ -676,7 +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_BIND: case FFA_NOTIFICATION_UNBIND: case FFA_NOTIFICATION_SET: case FFA_NOTIFICATION_GET: @@ -875,6 +876,27 @@ static void do_ffa_notif_bitmap(struct arm_smccc_1_2_regs *res, hyp_smccc_1_2_smc(args, res); } +static void do_ffa_notif_bind(struct arm_smccc_1_2_regs *res, + struct kvm_cpu_context *ctxt) +{ + DECLARE_REG(u32, endp_id, ctxt, 1); + DECLARE_REG(u32, flags, ctxt, 2); + struct arm_smccc_1_2_regs *args; + + if (FIELD_GET(FFA_NOTIF_RECEIVER_ENDP_MASK, endp_id) != HOST_FFA_ID) { + ffa_to_smccc_res(res, FFA_RET_INVALID_PARAMETERS); + return; + } + + if (flags > 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; @@ -937,6 +959,9 @@ bool kvm_host_ffa_handler(struct kvm_cpu_context *host_ctxt, u32 func_id) case FFA_NOTIFICATION_BITMAP_DESTROY: do_ffa_notif_bitmap(&res, host_ctxt); goto out_handled; + case FFA_NOTIFICATION_BIND: + do_ffa_notif_bind(&res, host_ctxt); + goto out_handled; } if (ffa_call_supported(func_id)) -- 2.55.0.rc0.799.gd6f94ed593-goog