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 0C0E8CD98DA for ; Tue, 16 Jun 2026 15:42:20 +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=HDCvszfTGrfPrRQcbamAtNu8DMm5bIYeuf9FwhpYcNM=; b=TAoyJNUD7PoqvP2tnKvCnEQhGC 2N+XREzEGOvIPA3Rxzl4sGOSmYCtqs0IXDfVnCzR/+XiT9lzZCSpb4unc4AZwkavfglLEQPh7tnn9 8S+aUXfbeVD7W2pHgfuYfFxeXnngKJZkxehG5gqrWJYwh7f5Hq+Lokmqy0oYB7t6nOKSVnRnME3bs z8G78A7ccU4ucInrEVtxLxVSJ1KRfHV6Shr0wfBpjrzA4jjIwJDzygNjHu4Cm2K20rYiu1w1pCcHg AdyAHXkl54u1D+fQVm8bfECxP/RaPOyXwB/98ZXfhgTimpNc435JmQmwsKpIo2JzKN03j6HBDDrYv xB8niQNw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wZVvZ-0000000G28o-32MC; Tue, 16 Jun 2026 15:42:13 +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 1wZVvW-0000000G25h-1T1g for linux-arm-kernel@lists.infradead.org; Tue, 16 Jun 2026 15:42:11 +0000 Received: by mail-wm1-x349.google.com with SMTP id 5b1f17b1804b1-490afe64f26so21804935e9.0 for ; Tue, 16 Jun 2026 08:42:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1781624528; x=1782229328; 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=HDCvszfTGrfPrRQcbamAtNu8DMm5bIYeuf9FwhpYcNM=; b=EboxpoCtv5CfcSZmr+4GViv7oLTQ4k9giShMPGNwCQpMgQt6fePplGVvJu9B5/IxgL 6xepaCEqFUjPfWgTH26gIbh3qg0Shy75rYQOpXpMJuUeSgUvmZiUEMm43pG+Hz/mx0aF FfJvtuKJAu3DLPMeRefFXEdgqquVvn3DpOIy1u+dj0VXRuWn9G7bIx+F2KVEHf+zMedo lipWx7VA4uFKhvt3kluwRz05pEGgTv0bELtAoURL1CIa5H9Lh0EiJ1PI+RQyTxSen8uk wCyQuzzQFOTf3F02mNY4MmVkVy03MZxons2futk6xbozu9sKELZMdJP49fmX3x0M1YZN xURw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1781624528; x=1782229328; 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=HDCvszfTGrfPrRQcbamAtNu8DMm5bIYeuf9FwhpYcNM=; b=p3kFJyRFPFjDnv+VALYcca+hV4IjpbGRZ5Ji609ofipYEmtHB15o7a29LHU1EmX+VT 6uYa7jEqOibqdu+FvrxUse41AmJ/TwBTyGq6fRMvaow6QfbiIAWBGYPo3nOjAHpEYMPQ Y1E+Pdm1AKLAn+BbbCGJQqV/yYRB12ai5j1X/T+TLMC4rBlaN8Q/3mgbKYe9O9eZ+KJ7 vyuby3mKS0KTs/9k+bRVPuatYWZN8KRxR1OxrZKt6K8DsIREOlY3gxknXOTIHbIOUP/F 4cxZOgTvMTfpV/jAJ5ACLQk2x9mCFjBNaHHK+pO7OhBWYP+5coXGMqls5PNqrCDTFWXB QdWA== X-Forwarded-Encrypted: i=1; AFNElJ9EAyqwHH8iZzYPquZEpEEuTeLlUBuMvBlvyyRDF3tYHijLhrTJjtE304e5gysN/D8R1bw1XE3fJqYf1tx5T40O@lists.infradead.org X-Gm-Message-State: AOJu0YwumZIDuwef6Ejli0+yfmeL6uE1WkQt0WoAe0TUz13tFtic47vn k9hnyAzv+4uOzs2cn2dzQ8M9Uw0JFkmqTMFG37QlSzG4Jf3BZPajB3/SGXZTXCoogvFPvgGCK2a deSZQy0HXD39KGbcRSMtPK7K3/iYjxw== X-Received: from wmpt39.prod.google.com ([2002:a05:600c:32a7:b0:490:b8a9:c86]) (user=sebastianene job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:5248:b0:489:32b:ac0b with SMTP id 5b1f17b1804b1-492332d2c22mr2868755e9.6.1781624527303; Tue, 16 Jun 2026 08:42:07 -0700 (PDT) Date: Tue, 16 Jun 2026 15:41:44 +0000 In-Reply-To: <20260616154149.2763214-1-sebastianene@google.com> Mime-Version: 1.0 References: <20260616154149.2763214-1-sebastianene@google.com> X-Mailer: git-send-email 2.54.0.1136.gdb2ca164c4-goog Message-ID: <20260616154149.2763214-3-sebastianene@google.com> Subject: [PATCH v4 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-20260616_084210_409891_2E18A886 X-CRM114-Status: GOOD ( 11.93 ) 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 --- 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 c64c704f22f8..a72f6d4b62f0 100644 --- a/arch/arm64/kvm/hyp/nvhe/ffa.c +++ b/arch/arm64/kvm/hyp/nvhe/ffa.c @@ -713,8 +713,6 @@ 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: @@ -909,6 +907,27 @@ 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; @@ -967,6 +986,10 @@ 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)) -- 2.54.0.1136.gdb2ca164c4-goog