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 4B865CDB47C for ; Tue, 23 Jun 2026 11:54:32 +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=8rDVjRX05LswWm3CoIhO4tKCfKLIFEXEGSybtuh+IOM=; b=R3KsXxc6j5oItuDlhMldQNPXtw NCzl9j7dA/N9/EvxbZ2+StQGjVQ6KswX95dvV/m95FffM9HqwSKMnmsTUdWxxr2OcA7B3+zELeTNd h98BDKGvBXC67efTMtmPk885E3ayJM5zHDHadIj1+/1KATPZERgXkB6WfnxJuskCMhRXJt/wNcCs3 i7rTRDTLJvpxgR3Luszc7wbD2P6nJAKb9r+3YU7cLZ3SOGSWCaxJPFZE1Ut12XHQWoWM2y+VGZkGW wLpp+1YTBbxpdlgJAPTr+KvgGCa18XwxKWz0wnbJpqTlkKn+r/CYbBH0AfYex6VGPKwrKWH3u3rB9 lUz/GhOA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wbzhw-00000006D8R-46Kr; Tue, 23 Jun 2026 11:54:24 +0000 Received: from mail-wm1-x34a.google.com ([2a00:1450:4864:20::34a]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wbzhp-00000006D2z-07VB for linux-arm-kernel@lists.infradead.org; Tue, 23 Jun 2026 11:54:19 +0000 Received: by mail-wm1-x34a.google.com with SMTP id 5b1f17b1804b1-490bae3a39bso49141955e9.1 for ; Tue, 23 Jun 2026 04:54:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1782215655; x=1782820455; 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=8rDVjRX05LswWm3CoIhO4tKCfKLIFEXEGSybtuh+IOM=; b=CkwnYV7NfynHCksG35mWB8aGJCgqjUWPExGqYqTkhSfkZFlZ3rSkGAt9q7YwhXSJic DG1IrntPuH7xTqwmWw5fytP+dB8lXhXA2iZDLFrhX34HgiNgb4Z9BsOBNnkF3edYPQyb ZzSumKb822lAOC3pgMztzjybm43c+HAJVGWirGdAYklr1OJihSiENFykE6YWqYhTwmsJ AoUH5ZwRmNtaaYYV7RXUoL1c2nN9j2Vq/XPGlie6VggwproFi0kErZjHe6RH2Izzcl0L avXAQ0gpWlLSr1rf8RrjFDleeW0gGC+v9dh+jvPLSdXS3JB5xKjLy03NhDj1mDomnGf2 U8OA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782215655; x=1782820455; 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=8rDVjRX05LswWm3CoIhO4tKCfKLIFEXEGSybtuh+IOM=; b=m8IkKax7+36ow9UQDPcChklC99qofmR1UgqntndNQwKv3N0KgDK2aqxQE86+sxnnWC XYWpSt9t20aQOU6cyZ+IakmE9qtrSNlgMKY4AAbAZ6T6bEl94zxH4zZf3sMFKn0TbEpK sm9tUtSwFz39r19wIGZy555m7N9MZ0csc3k1PW9JJ3uUz7LaPjSUwhV0K3CV/MLhusHG tbF59tcQf6cpiX5zRrOSPgt2a1d1Nou79UPeoyz1aOazDNe98tjWHhnpvxmGs4BNoxpe 5V7OlNw+sZ9oZGp5y/ZFECzg6k+o95XdjhRw0AL7Hk/7yXO5fHhevFXd/qRLPBTFDWoG vXZw== X-Forwarded-Encrypted: i=1; AFNElJ/AUmrQ6VggO09AARVOYPKXOWtPEFmtZfW0DaMuOr+vtQ4TnI0VDnTd3aMnTZF2utgH7E9+vgm0xsI18DPf16Ov@lists.infradead.org X-Gm-Message-State: AOJu0YynAU7En+EeG82gpKq0Ft5AMhk9clGcYKq5sIkFxT52x2Mc+aBB mnWxlGgmnBYIwhkEywGcgaLrTNZhrnBHTwfErQirGJjSpOx95lYd6AC97ewySb5jfQuWmYEE2rO B6SkFZNOFa43b0aoBkUxjO5w214cqGw== X-Received: from wrus3.prod.google.com ([2002:a5d:6a83:0:b0:462:fc9c:4a7a]) (user=sebastianene job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:3acb:b0:490:44eb:c1dd with SMTP id 5b1f17b1804b1-4925b38682emr29908865e9.29.1782215654493; Tue, 23 Jun 2026 04:54:14 -0700 (PDT) Date: Tue, 23 Jun 2026 11:53:51 +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: <20260623115354.632361-5-sebastianene@google.com> Subject: [PATCH v5 4/7] 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" X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260623_045417_086214_F9300FBC X-CRM114-Status: GOOD ( 12.11 ) 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 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 c7910ee4000d..4b9e2b6b7143 100644 --- a/arch/arm64/kvm/hyp/nvhe/ffa.c +++ b/arch/arm64/kvm/hyp/nvhe/ffa.c @@ -717,7 +717,6 @@ 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: @@ -957,6 +956,27 @@ 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 (ffa_check_unused_args_sbz(ctxt, 5) || 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; @@ -1027,6 +1047,9 @@ 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.rc0.786.g65d90a0328-goog