From nobody Mon Feb 9 13:37:19 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 7FF89C0015E for ; Sun, 25 Jun 2023 15:18:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230503AbjFYPSd (ORCPT ); Sun, 25 Jun 2023 11:18:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35100 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230307AbjFYPSN (ORCPT ); Sun, 25 Jun 2023 11:18:13 -0400 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 042B51B8 for ; Sun, 25 Jun 2023 08:18:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1687706293; x=1719242293; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=NbhV1jUvIvoPeaMjWeaCFCY5V1AWw9RzK0uK6KP563I=; b=S9m44QiBfsasQInK9mKlcQwBofYKrUAYfbXkz07OzxCorx9lKSSc36qR OCdf0guBmUHdEujJDs9GZyhWIcKj2WF469mlEo/nBIfVzOOoW5E3KbJrT dzWpgpEsFU4JAP+NbRS57jQIhda/0mOUweMh4RspgYtODIjpCK4NDbjZ9 hDY8dZaL7u3JQIFBLlbhUtnSTxLiLFjhTeEqZm4HRO9mmw+0303zYFZFb LCt9S94vunDc6mV/gDUMS6jzMFauxT+8xuRBv2lPWgu2kWVC0qHUoTj8X qVtUQcuqvWtQMENbIQMY5AYYUCFzCcqzblxUbLuBW1IJgIPNw2mIjrCKL A==; X-IronPort-AV: E=McAfee;i="6600,9927,10752"; a="391255102" X-IronPort-AV: E=Sophos;i="6.01,157,1684825200"; d="scan'208";a="391255102" Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Jun 2023 08:18:12 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10752"; a="840004542" X-IronPort-AV: E=Sophos;i="6.01,157,1684825200"; d="scan'208";a="840004542" Received: from cascade.sh.intel.com ([10.239.48.162]) by orsmga004.jf.intel.com with ESMTP; 25 Jun 2023 08:18:10 -0700 From: Jingqi Liu To: iommu@lists.linux.dev, Lu Baolu , Tian Kevin , Joerg Roedel , Will Deacon , Robin Murphy Cc: linux-kernel@vger.kernel.org, Jingqi Liu Subject: [PATCH 5/5] iommu/vt-d: debugfs: Dump entry pointing to huge page Date: Sun, 25 Jun 2023 23:04:42 +0800 Message-Id: <20230625150442.42197-6-Jingqi.liu@intel.com> X-Mailer: git-send-email 2.21.3 In-Reply-To: <20230625150442.42197-1-Jingqi.liu@intel.com> References: <20230625150442.42197-1-Jingqi.liu@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" 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 --- 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 e4d3b7836076..f5e26cc21905 100644 --- a/drivers/iommu/intel/debugfs.c +++ b/drivers/iommu/intel/debugfs.c @@ -326,9 +326,14 @@ 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 2.21.3