From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.10]) (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 377BE29E10F for ; Tue, 18 Nov 2025 06:23:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.10 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763447022; cv=none; b=sH6f/hV8luP8mCdwSllQ77qJ3OOKtj6lG2Yc1suUw5goOASsVfvbJmbYpVBmgzVRpgsVreRVqc3aqEwpUdV7x8GY60BogZm9BJYnoIuG9N/0xsv1P2eOlIv5PsvLSNPw58DRtn4thXyOe868HBVI/mzKYLXwZ34j9Wq+Sxqcl24= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763447022; c=relaxed/simple; bh=o0Os0yCWoDXKZYizKvM7nchHjT3IMt9PymQ9wsTSCAU=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=WxUJmyLUNNxMbtqn+FrWu48MrsVv9GYAP7eSt55BDQ7rEsBFx1JKQ/gyC2xEiCjKAFDOQavPJwfe3zTN2ducQ1Q+mYoFY9xo5iFGMor8xkSTPy9F2nMkxbVmBcCJojJAvyUZgZKCuTSxS0fRlB+DcqGKMpzBuClg5GuVs3T/RCI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=pass smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=gvHWM6gw; arc=none smtp.client-ip=192.198.163.10 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="gvHWM6gw" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1763447020; x=1794983020; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=o0Os0yCWoDXKZYizKvM7nchHjT3IMt9PymQ9wsTSCAU=; b=gvHWM6gwKcpCLofRSeY36K5v2j8cK7V8kQxHY42yQ0Pu4IXXeYHkiER5 Zpl3ZSzrBsyAs/TZt7XCl2itggTFwcHEtcH157R6rw3g+1WSLKWAWaOJf GcKtl/QS0Eki1dAs16BiG8AMCN/Vwk5Q5QnOSN5dzf55eHCAga/E/Vi+T jI8++r/XwvBSjhCSdp7JrhNtHj+Hv0KQRzlHqNAQshBpGNPOaznhzcosU jYcF7K9cHA2vRFaTdKSCCk0+hy26fp/KtX8mxbwuvz3/1BUi6s0TKUm9e rZ4yz4PSaJJXFtdjEBWzXKQQaF7acqZn53PYuloqk5vtXIUr3BiOsLE5o g==; X-CSE-ConnectionGUID: d1EkkbTISJiuxO0YtO57Wg== X-CSE-MsgGUID: dx2msSEuRjWySVyZzbCzoQ== X-IronPort-AV: E=McAfee;i="6800,10657,11616"; a="76811710" X-IronPort-AV: E=Sophos;i="6.19,314,1754982000"; d="scan'208";a="76811710" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Nov 2025 22:23:39 -0800 X-CSE-ConnectionGUID: yS5W5kFpQVySZliJZaBRyw== X-CSE-MsgGUID: WPRLsngoQ3Gsm6IB1j1V4w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,314,1754982000"; d="scan'208";a="214064899" Received: from allen-sbox.sh.intel.com (HELO [10.239.159.30]) ([10.239.159.30]) by fmviesa002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Nov 2025 22:23:37 -0800 Message-ID: Date: Tue, 18 Nov 2025 14:19:24 +0800 Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: REGRESSION on linux-next (next-20251106) To: "Tian, Kevin" , Jason Gunthorpe , "Borah, Chaitanya Kumar" Cc: "intel-gfx@lists.freedesktop.org" , "intel-xe@lists.freedesktop.org" , "De Marchi, Lucas" , "Kurmi, Suresh Kumar" , "Saarinen, Jani" , "Auld, Matthew" , "iommu@lists.linux.dev" References: <4f15cf3b-6fad-4cd8-87e5-6d86c0082673@intel.com> <20251118012944.GA60885@nvidia.com> Content-Language: en-US From: Baolu Lu In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 11/18/25 12:04, Tian, Kevin wrote: >> I'm still interested to know if there is an iommu error that is >> somehow not getting into the log? > Just re-checked the code: > > dmar_fault() -> dmar_fault_do_one() -> dmar_fault_dump_ptes(): > > pr_info("Dump %s table entries for IOVA 0x%llx\n", iommu->name, addr); > > before reaching that point, there are several early exits: > > - advanced fault log, which I don't think will happen (Baolu?) Advanced fault log is not used in the VT-d driver. Thanks, baolu