From nobody Fri Jan 2 05:47:47 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 47889CDB465 for ; Mon, 16 Oct 2023 03:32:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231596AbjJPDc0 (ORCPT ); Sun, 15 Oct 2023 23:32:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49044 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231511AbjJPDcO (ORCPT ); Sun, 15 Oct 2023 23:32:14 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.151]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 27E55DE for ; Sun, 15 Oct 2023 20:32:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1697427133; x=1728963133; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=zgBbDJXbHtsNwJit7h5lRyc7ItRonwTU9Y4WoJHuj+4=; b=F8bZRogzJd1FRa+ajf3Hj7Z/44gP3oisErtGLVNIPb4KouWLQ3evvB4t YQCYxQPBidaAMLHNTidSCywIUNtL++uhU3qmzRWJTsl0U9oVGYPGoI/dB mLNRKK7CDXLiwUwKHLlTdRa8Vht9wd0HBBQMrjd6I2nXm/dqh1BPAehDX mcyMlrHA0RE4XrdvyMmTleQZj2Mg7dW2GgxJBbidOdCGHfhMUPOpqaFKm /q8th6alwOoIWjrdDcy6TaO4eLD62OWibP7wJdJtAmRcJxrFX8/Q+8/MV EBpSQXRmLYsoMdu1IkiX5Ay4T9GCK3MRPwn4ctuyRPjPTxVKOzDjZPgET w==; X-IronPort-AV: E=McAfee;i="6600,9927,10863"; a="365701129" X-IronPort-AV: E=Sophos;i="6.03,228,1694761200"; d="scan'208";a="365701129" Received: from orsmga003.jf.intel.com ([10.7.209.27]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Oct 2023 20:32:12 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10863"; a="705444256" X-IronPort-AV: E=Sophos;i="6.03,228,1694761200"; d="scan'208";a="705444256" Received: from allen-box.sh.intel.com ([10.239.159.127]) by orsmga003.jf.intel.com with ESMTP; 15 Oct 2023 20:32:11 -0700 From: Lu Baolu To: Joerg Roedel Cc: Jingqi Liu , Jiapeng Chong , iommu@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH 2/4] iommu/vt-d: debugfs: Dump entry pointing to huge page Date: Mon, 16 Oct 2023 11:28:28 +0800 Message-Id: <20231016032830.101321-3-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231016032830.101321-1-baolu.lu@linux.intel.com> References: <20231016032830.101321-1-baolu.lu@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Jingqi Liu For the page table entry pointing to a huge page, the data below the level of the huge page is meaningless and does not need to be dumped. Signed-off-by: Jingqi Liu Link: https://lore.kernel.org/r/20231013135811.73953-2-Jingqi.liu@intel.com Signed-off-by: Lu Baolu --- drivers/iommu/intel/debugfs.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/iommu/intel/debugfs.c b/drivers/iommu/intel/debugfs.c index 1f925285104e..497c1561d3d2 100644 --- a/drivers/iommu/intel/debugfs.c +++ b/drivers/iommu/intel/debugfs.c @@ -311,9 +311,14 @@ static inline unsigned long level_to_directory_size(in= t level) static inline void dump_page_info(struct seq_file *m, unsigned long iova, u64 *path) { - seq_printf(m, "0x%013lx |\t0x%016llx\t0x%016llx\t0x%016llx\t0x%016llx\t0x= %016llx\n", - iova >> VTD_PAGE_SHIFT, path[5], path[4], - path[3], path[2], path[1]); + seq_printf(m, "0x%013lx |\t0x%016llx\t0x%016llx\t0x%016llx", + iova >> VTD_PAGE_SHIFT, path[5], path[4], path[3]); + if (path[2]) { + seq_printf(m, "\t0x%016llx", path[2]); + if (path[1]) + seq_printf(m, "\t0x%016llx", path[1]); + } + seq_putc(m, '\n'); } =20 static void pgtable_walk_level(struct seq_file *m, struct dma_pte *pde, --=20 2.34.1