From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f74.google.com (mail-wr1-f74.google.com [209.85.221.74]) (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 52CA43DB311 for ; Mon, 8 Jun 2026 16:56:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780937766; cv=none; b=Uzzkbf2HPBK/hDn+o4t9as8F403QyGOxpW9/9Jc514rDe4YCAPrdSeiPjoJi//Kiw2g+IKiXS5zew6rgUJQ+fPzmGqjZE0qRAjZfHb0wWAVj4sqp7F4BJ5QzD83zu5B1SZY0duZxahx7UluONDkaUbbU+zMZBWdo7wYsLREE6dk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780937766; c=relaxed/simple; bh=a/ghZ9f8piNkArvC2k+e2cwsOUE+3fRGTGXzL9vLPps=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=P36So7HlMCEo1N7WZsYWuHN9K9sNJXo9BGqss3Ea6I0WrgzOgDq7l1TTcjC4W+PG8MiVHl+kygO6Zw783fY3dl5tQLB99prHXHNJqmJ4vXx2Q4ZQ0IFPhT4z8Rwvd9J4IZjfBO+sMNycdML4jpzeQG9qtswyxIBZ/eNzSN+WjqE= 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=dM70nfRv; arc=none smtp.client-ip=209.85.221.74 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="dM70nfRv" Received: by mail-wr1-f74.google.com with SMTP id ffacd0b85a97d-45eee3f9f03so4469593f8f.1 for ; Mon, 08 Jun 2026 09:56:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1780937764; x=1781542564; darn=vger.kernel.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=zvv+an6xLDGNzBLnOXXROxXfLkjVhoP4StmbjGm4UyM=; b=dM70nfRvdwzyhyBDKJxRWnTM5zXPrMCaiJkKUIhxxQr39q++mON2sEdt8JpfKsjCF0 046N8FUFvq6WMzsdyPw4CADaNiXcqUonbrgizTdfibxwmAHwBIHW5Q89Vpbs9+ziuSY3 iJVrP61J9u0f42aZzLeeyMLUHdT/DiZ1LWSfU6kHN//uYVSe1kQudYRJuucoKanWuxE1 kaT/AdhLdIHJRZND6soSQWr/vMW3BUqK28QMFGhrTEJpOj7Pgcm1oF8IAmx9Lpx/XuCW h4ZmueeiBZDhFGbz/InFmLTHbzBUbNf4myUXKceDF7PMW5RTweeH0g8k6Qu3jDEbtk+m fWmg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1780937764; x=1781542564; 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=zvv+an6xLDGNzBLnOXXROxXfLkjVhoP4StmbjGm4UyM=; b=eQ5R9jgWR7F70dBETE1aFxzr9G5U4Uhq17C5m+hxiSRX8bH+SzWRkEQnLVDHijrY/k xgtNDtGi+oux2lKQ3vEkOFLE0rrZzD9jf6MG4eGIkIOmVARAW2Le3Tyco4QVdUaPaKoW 728cwrEWFm1DHmkYd1A1DY1+qMJKEXQHRlqPIKuVmXbUuhNP6Bkpb9f8x0iqUECe2OOV YgX9hjJDf6VOUnYPyHYh2+3BGJklqVBmso+ocxD3Y79Z4m5h66F/M8tFD1cZ+n4lB/UB 7aaSPjfev9vI+k7dwqrUJhncwB2tPNptlMVIKiwMOzkoxk946KZW66LhyV0rGGSkKJ7+ BQGg== X-Forwarded-Encrypted: i=1; AFNElJ/PjeUa3Z1TBOuOOWW3a080hbiRfd0YA6nP2Y2KTwT6/K1xhHWpU2y+oD+bZaWEUz3iHT0XbYiTOFEfrNw=@vger.kernel.org X-Gm-Message-State: AOJu0YxS6U+6H/uepLwUy1JCeb7O8rLdKkTMh7ztdKweJrqSuMebsZa4 zywj+k4Ew1ESZdT9rQY94CzZMzrPxWVxynpNSMGiwetc9qXP4DO1kD5w25wtBtRTNmxWwbHBLy3 bcDl/cn1H8hxllqui9Whc5v+4q+xWkw== X-Received: from wrop15.prod.google.com ([2002:adf:f20f:0:b0:43b:4453:39d8]) (user=sebastianene job=prod-delivery.src-stubby-dispatcher) by 2002:adf:e906:0:b0:43d:77f4:7145 with SMTP id ffacd0b85a97d-46030506818mr19157420f8f.19.1780937763520; Mon, 08 Jun 2026 09:56:03 -0700 (PDT) Date: Mon, 8 Jun 2026 16:55:49 +0000 In-Reply-To: <20260608165549.1479409-1-sebastianene@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260608165549.1479409-1-sebastianene@google.com> X-Mailer: git-send-email 2.54.0.1064.gd145956f57-goog Message-ID: <20260608165549.1479409-8-sebastianene@google.com> Subject: [PATCH v2 7/7] KVM: arm64: Support FFA_NOTIFICATION_INFO_GET 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" Allow the host to query the FF-A notifiction status and proxy the info get message to Trustzone. Make sure that the SBZ fields are enforced. Signed-off-by: Sebastian Ene --- arch/arm64/kvm/hyp/nvhe/ffa.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/arch/arm64/kvm/hyp/nvhe/ffa.c b/arch/arm64/kvm/hyp/nvhe/ffa.c index 28b6cb0e14c4..463a845557f9 100644 --- a/arch/arm64/kvm/hyp/nvhe/ffa.c +++ b/arch/arm64/kvm/hyp/nvhe/ffa.c @@ -689,8 +689,6 @@ static bool ffa_call_supported(u64 func_id) case FFA_RXTX_MAP: case FFA_MEM_DONATE: case FFA_MEM_RETRIEVE_REQ: - /* Optional notification interfaces added in FF-A 1.1 */ - case FFA_NOTIFICATION_INFO_GET: /* Optional interfaces added in FF-A 1.2 */ case FFA_MSG_SEND_DIRECT_REQ2: /* Optional per 7.5.1 */ case FFA_MSG_SEND_DIRECT_RESP2: /* Optional per 7.5.1 */ @@ -1003,6 +1001,20 @@ static void do_ffa_notif_get(struct arm_smccc_1_2_regs *res, arm_smccc_1_2_smc(args, res); } +static void do_ffa_notif_info_get(struct arm_smccc_1_2_regs *res, + struct kvm_cpu_context *ctxt) +{ + struct arm_smccc_1_2_regs *args; + + if (ffa_check_unused_args_sbz(ctxt, 1)) { + ffa_to_smccc_res(res, FFA_RET_INVALID_PARAMETERS); + return; + } + + args = (void *)&ctxt->regs.regs[0]; + arm_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; @@ -1079,6 +1091,9 @@ bool kvm_host_ffa_handler(struct kvm_cpu_context *host_ctxt, u32 func_id) case FFA_NOTIFICATION_GET: do_ffa_notif_get(&res, host_ctxt); goto out_handled; + case FFA_NOTIFICATION_INFO_GET: + do_ffa_notif_info_get(&res, host_ctxt); + goto out_handled; } if (ffa_call_supported(func_id)) -- 2.54.0.1064.gd145956f57-goog