From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from vps0.lunn.ch (vps0.lunn.ch [156.67.10.101]) (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 CA9182DC767 for ; Mon, 8 Jun 2026 18:05:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=156.67.10.101 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780941943; cv=none; b=E0E7YBEf5ufL6LfrQfnSQVeMd2Ad79NOGZ2wps2mLvR4LnZzlfdiUAstFraOM5Z1nOGJU528LRoVQCi2dBRFslcVUyALrjIZ1leJfdTV9bOp72SBadnkCC/h/Fy4W66Fe1gZhN8/lGpufZQymBJrJ+oDFy/m2MYz04+aJikv/GE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780941943; c=relaxed/simple; bh=zmqYoXKsiqAd/jRV8IkXP1bCf5TbVBDbgFca7yszkK0=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=MW1mi6ElnDfwdZbOdvLB+OA35cqw4Fj5ZQA5RCXSqFjvW6bZdYba9B0XoCvdyL28IrBA+ZTNBWE1820GiQoHRRI1cbNPnlWm/bP3ovZVtqFCdx6vjowzvBOScZBNP4/aY3mHF7IXfj/UcsUQ63RA6kyQWAPxilWcvQhKFemzEyc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=lunn.ch; spf=pass smtp.mailfrom=lunn.ch; dkim=pass (1024-bit key) header.d=lunn.ch header.i=@lunn.ch header.b=SAvCiCFZ; arc=none smtp.client-ip=156.67.10.101 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=lunn.ch Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=lunn.ch Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=lunn.ch header.i=@lunn.ch header.b="SAvCiCFZ" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lunn.ch; s=20171124; h=In-Reply-To:Content-Transfer-Encoding:Content-Disposition: Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:From: Sender:Reply-To:Subject:Date:Message-ID:To:Cc:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Content-Disposition: In-Reply-To:References; bh=Sn2RaqFmcO0Fp/dqSoOY9ViKZkuBRw2xZmPal61BeyE=; b=SA vCiCFZUrJ17FzKwxMlb28P7G5IGDkYRRug9aPlaq3G9S0tgrGiJy+GeUYBK1ANKZSaaL9QXPIOt3P ShNPGt/bzWyI8W5vFzcqp5n7q0IzyceAa5294Eo13qn2KcaD9JiZeJsCx+KsZbD+KkclbIyAOSljD A+gF0/JjC2GiX2k=; Received: from andrew by vps0.lunn.ch with local (Exim 4.94.2) (envelope-from ) id 1wWeLd-006fu9-6O; Mon, 08 Jun 2026 20:05:17 +0200 Date: Mon, 8 Jun 2026 20:05:17 +0200 From: Andrew Lunn To: =?iso-8859-1?Q?Gr=E9goire?= Layet Cc: joel@jms.id.au, andrew@codeconstruct.com.au, jacky_chou@aspeedtech.com, yh_chung@aspeedtech.com, ninad@linux.ibm.com, linux-aspeed@lists.ozlabs.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 0/2] soc: aspeed: Add BMC and host driver for PCIe BMC device Message-ID: <63654bb5-c246-41c4-bb7e-5bfa23e59f2e@lunn.ch> References: 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=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: On Mon, Jun 08, 2026 at 02:51:21PM +0000, Grégoire Layet wrote: > This is a v2 for upstreaming the VUART over PCIe BMC device driver from the ASPEED kernel SDK (branch master-v6.18) [1]. > There are two drivers: a BMC-side driver and a host-side driver. > Together they enable host<->BMC VUART communication via PCIe. I would like to see somewhere a comment about security. From the replies i got the host can access anything on the LPC bus of the aspeed. What are the implications of that? What are typically on such a bus? TPMs are often there, but does a BMC have a TPM? Andrew