From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f71.google.com (mail-wm1-f71.google.com [209.85.128.71]) (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 AD2594FDE4F for ; Mon, 7 Sep 2026 17:19:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788801581; cv=none; b=R6ipgXUWYjia03AvN01lcl5HVlXBxNcxHDqDa2ylcJ9mdnrFZpcdFVW9mLlIHEvbK4ZpF5hDJakXSclLKJlRBKL8CHbR3L+ihT5UeWHAveEgT8gLvW5P/Kuadr/rsdzAgOTzkO+2fUeVhjxhWhEUZ1h50OMlYUDAGJiORXNDZWM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788801581; c=relaxed/simple; bh=3aB790zGiVOG/HfZGHcb/tIqTnzy3lfiYNqJ4SlcI7Q=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=YdHc9jCggaxiU0FD7spnsLM1OWVZKz2vXJ7Iqdr4QfvKbnRwoiQmn7ME0JzPb/Ou1puqRbTLC7JtLJ6dj510z9HugnSiaGTz2oxuzAc6EfAqAKV+K5LfXZX2q1XEtBHFevqwxrgeWl8pGqw7ZCOUDD8QJoysp5x+T2RDgDBnnTM= 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=c5+NQAIt; arc=none smtp.client-ip=209.85.128.71 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="c5+NQAIt" Received: by mail-wm1-f71.google.com with SMTP id 5b1f17b1804b1-49d156c917cso5637075e9.1 for ; Mon, 07 Sep 2026 10:19:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1788801578; x=1789406378; darn=vger.kernel.org; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:from:to:cc:subject:date:message-id:reply-to :content-type; bh=nteL4njDpbIytNAvu2VP8USt+sQ1w/IhgUr/WfH7fOI=; b=c5+NQAItnRJg6iiodjs6EcloBlQ1d3x+4jOPs/oo9HTx6GBG/jNqw4JYr3z+2tEXDE zTpWMYHsiJQhIHoJV6PIOiWL9qqqaJHTXlXLoNtjh+ZAvgmONl74cVl/MhebBkSKjmuj EApXbUh2dz3naDoscK5lbbdnaxd7DHzlSghZtv7eu/P2jZCG0VXFjo4BM5U3Vucy/sB5 KEg2fJTovbDwl0xfN1WAERgBv+Ux4q+sHe/cRUHfkwChSCliJAIS3e/vcAG3lO5MM5Zw NiLnVUKXmEyyfi2uIfXb7eLe6rzjlgNJXo2HQiwWgApvLO+Th09MlbiJnKXUB6HbrTxh 4f+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1788801578; x=1789406378; h=content-type: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:content-type; bh=nteL4njDpbIytNAvu2VP8USt+sQ1w/IhgUr/WfH7fOI=; b=F2tsrHtKD0eOLf9K2IMg5WWlUCtsyW9cPlLxclJxS5dhCzSs/NDMzqSdJ5mQYMU0N9 U5LlvdyiWBWW5JBd7LI0ruTs8HqFf7AMzH2oHLCymT+ODIHXGnOoYtAx7WKl7FyowQMi 39Y4y3NE2L/hnOkRuL4AenDw/eAlGT7XkywtdtxTdXqKHof36rzqxq39iWRpFvFBe7Vf reCAP1x8qJlWoyRxd4YI/vL3NpZ040h16SHORYfsgBCu99vLUs+MeQ5+JHfYBgCogWwx bRv5ZTmNc5G+U+lf8JvQG0Gg3nZ5ZfyP8Qmk03o2p80o8be1eFJyRebZ4tJS6xzKxAfy j/ow== X-Forwarded-Encrypted: i=1; AKwUvBwIXJlrHUaKbJHvJ1BoK3worHEHDLvj4m121cRrhDmssWRUslekD9cyyu4442ewaTJ3s4KdPHUtudKs4QQ=@vger.kernel.org X-Gm-Message-State: AFuF++mCAzUOTwoYToa/UUt/AHHF9xl4DlGzWJQLF4JjThzxeqQnTRke 6xywQ7sas0L/nW5RyMlCe6zrLmCq0ZcYHgT5PswzlP4McHWrCUVLklFQgcy8or9HSbhvLnQgpbF oguHAfpfuDqx9++k8hfNxjWaiAyegfg== X-Received: from wmpw23.prod.google.com ([2002:a05:600c:997:b0:49d:74b:4e06]) (user=sebastianene job=prod-delivery.src-stubby-dispatcher) by 2002:a05:600c:4fd6:b0:49b:4eb6:6ffd with SMTP id 5b1f17b1804b1-49d1754ecbfmr25030805e9.5.1788801577617; Mon, 07 Sep 2026 10:19:37 -0700 (PDT) Date: Mon, 7 Sep 2026 17:19:23 +0000 In-Reply-To: <20260907171930.4037166-1-sebastianene@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260907171930.4037166-1-sebastianene@google.com> X-Mailer: git-send-email 2.55.0.979.g7e5102b832-goog Message-ID: <20260907171930.4037166-2-sebastianene@google.com> Subject: [PATCH v9 1/7] KVM: arm64: Forward FFA_NOTIFICATION_BITMAP calls to Trustzone From: Sebastian Ene To: catalin.marinas@arm.com, maz@kernel.org, oupton@kernel.org, fuad.tabba@linux.dev, 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" Allow FF-A notification bitmap messages to be forwarded to Trustzone from the host kernel driver and enforce the host vmid check. Reviewed-by: Vincent Donnefort Signed-off-by: Sebastian Ene --- arch/arm64/kvm/hyp/nvhe/ffa.c | 21 +++++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kvm/hyp/nvhe/ffa.c b/arch/arm64/kvm/hyp/nvhe/ffa.c index a327c2bbb6b6..aa82c58380a8 100644 --- a/arch/arm64/kvm/hyp/nvhe/ffa.c +++ b/arch/arm64/kvm/hyp/nvhe/ffa.c @@ -692,8 +692,6 @@ 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: @@ -878,6 +876,21 @@ 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, vmid, ctxt, 1); + struct arm_smccc_1_2_regs *args; + + 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 = {0}; @@ -936,6 +949,10 @@ 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)) -- 2.55.0.979.g7e5102b832-goog