From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailout3.hostsharing.net (mailout3.hostsharing.net [144.76.133.104]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A1C283ABDA8; Tue, 6 Oct 2026 09:44:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=144.76.133.104 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791279887; cv=none; b=KzeowX+1+IkT1rb0+NNaFqAy+FIrewCnnIBXB+BJ7RzoxOG6RYZyHj9QFEEa0LIc9BZXk/XTgGbPO1uUKmKx1CVa7wOv7bYGbBHMFeZhRXdkIqzoiO36tfR81n+tpfzH0rHjgLwiLcpcOy2TdvbrZ5xfHzzTMXJNYVXbrdbqzTY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791279887; c=relaxed/simple; bh=ZvUH+z8vQ8h5nsALRrcCmlmDFeZr2Esi/BQtBak8F5k=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=JCpwCVcl7VTynDqeAFOiDZJEtnNNHRWIFOQIY1mJqZKPnK91Rxw6eupxTCpKIpyZzrkPWbw67lxOt1nhKLn6JkfiCFhhwQ/8zDDjB610pk8E7ODdyBgFPXEARi4TkMzOr0c+W5zk+ugooTuNqls8a55FXz7yPvZ2uScuOrw+dF0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=wunner.de; spf=pass smtp.mailfrom=wunner.de; arc=none smtp.client-ip=144.76.133.104 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=wunner.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=wunner.de Received: from h08.hostsharing.net (h08.hostsharing.net [IPv6:2a01:37:1000::53df:5f1c:0]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384 client-signature ECDSA (secp384r1) client-digest SHA384) (Client CN "*.hostsharing.net", Issuer "GlobalSign GCC R6 AlphaSSL CA 2025" (verified OK)) by mailout3.hostsharing.net (Postfix) with ESMTPS id 60693C29; Tue, 06 Oct 2026 11:44:41 +0200 (CEST) Received: by h08.hostsharing.net (Postfix, from userid 100393) id 3B5CB627ED8E; Tue, 6 Oct 2026 11:44:41 +0200 (CEST) Date: Tue, 6 Oct 2026 11:44:41 +0200 From: Lukas Wunner To: Aditya Garg Cc: "Perlow, Jason" , Bjorn Helgaas , Bjorn Helgaas , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, regressions@lists.linux.dev, Alex Deucher Subject: Re: [REGRESSION] PCI/AER: MacBookPro16,1 powers off ~20 s after boot Message-ID: References: <20261005231914.GA639967@bhelgaas> <2a7a97cc-7ad0-4e6f-845a-dd841d36079b@linux.dev> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2a7a97cc-7ad0-4e6f-845a-dd841d36079b@linux.dev> On Tue, Oct 06, 2026 at 02:01:52PM +0530, Aditya Garg wrote: > On 06-10-2026 08:26 am, Lukas Wunner wrote: > > On Mon, Oct 05, 2026 at 08:17:12PM -0400, Perlow, Jason wrote: > > > masked only on 04:00.2 (Apple T2 Secure Enclave, 106b:1802): > > > stays up (120 s) > > [...] > > > So here the trigger is unmasking Advisory Non-Fatal Errors on that > > > one function. > > > > That's quite unexpected. Maybe there's a bug in the PCIe IP which > > Apple used for the T2 Secure Enclave device (which I believe is a > > fully-fledged arm64 CPU with a PCIe port in Endpoint mode). [...] > > macOS likely never unmasks the bit and so they never saw this during > > validation testing. Is the T2 device visible on Windows? If it is, > > it seems Windows doesn't support and unmask Advisory Non-Fatal Errors > > either. > > T2 device is visible on Windows as well as "System Device" It looks like lspci is also available as a Windows binary: https://github.com/pciutils/pciutils/releases/tag/v3.15.0 https://eternallybored.org/misc/pciutils/ Could you double-check whether it unmasks Advisory Non-Fatal Errors in the Uncorrectable Error Mask Register, on the T2 or any other device? Thanks! Lukas