From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.15]) (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 AF8AD2F6594 for ; Wed, 17 Sep 2025 02:50:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.175.65.15 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758077454; cv=none; b=EC1udHBrCur77aE9HCFQMYQAwN/x1zs3+UIqghfvIAAl9SDCU56AviPqwq/5Wy7ruuBhbqZvwRvgotrylaADY1q8+89ECGYgsCt7UL1/zTHcLgnai+DUyXwC8U+CtUbYSvizG40gLPfWU3bcb2jM3oPmAl3Dq6hXSgtEvD0wlFs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758077454; c=relaxed/simple; bh=TAbNBSS4RHNcQXrq8QpBB8Oyu1q8Yt8ZtOgysNs1Ep0=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=KUmd3RuxDVvpCIuopK/suRyNuckSWegg7kNG9SdK7gskkcNk3jbKm7r831krYEtEKMXW9EohecM0wZzw0B1T9APpnd+YyuivkJa/Ep/blKAxQsUJSlKSR3kQFQLhBPsi3jg1MfG2VldSkgB/2G17duCHrlkNCo0UywWWKxK9v4Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com; spf=none smtp.mailfrom=linux.intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=CieJUJwU; arc=none smtp.client-ip=198.175.65.15 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.intel.com Authentication-Results: smtp.subspace.kernel.org; spf=none 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="CieJUJwU" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1758077452; x=1789613452; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=TAbNBSS4RHNcQXrq8QpBB8Oyu1q8Yt8ZtOgysNs1Ep0=; b=CieJUJwU9N+nis3YcfYEduqW0Z9uEV3gHWNBlUcM4iuzx2xm9vL72RUU 3x4R/nOLLmBaRGwCUT9HM8GC1OXmSribinl1/roLXctj5WMAo+M5Pd3G1 yYANGmMhWS4nPLKMuChCgi3Uu9vlLPmThAbbQrbBmciYNWgyUX7vY8iO4 sfV2o6ED54+7Ry4RdRgmXWedIzgyQp3xvYmnbVbzFF4SmkLZ88wncOYnP dRN/clL1lEhkRhzfQcF0wOHkEXtHdINB7heM1+dk5cc+6BQaQYketi3OY tUsRhRaeHsU6yUNSVq1dAVXmj/sx47AoknMqTTYweQUuzvO70ywx8r9wi Q==; X-CSE-ConnectionGUID: 46q/fHtER0+GiPkTk/ZVUw== X-CSE-MsgGUID: JxSiyAJtRD+5pJ2A3H1zLA== X-IronPort-AV: E=McAfee;i="6800,10657,11555"; a="64005551" X-IronPort-AV: E=Sophos;i="6.18,270,1751266800"; d="scan'208";a="64005551" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by orvoesa107.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Sep 2025 19:50:52 -0700 X-CSE-ConnectionGUID: Hd5sgRXaRmW3RKBpNBg/Sw== X-CSE-MsgGUID: +zA34w+hReGH382sp8Agkg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.18,270,1751266800"; d="scan'208";a="175516559" Received: from allen-box.sh.intel.com ([10.239.159.52]) by fmviesa008.fm.intel.com with ESMTP; 16 Sep 2025 19:50:50 -0700 From: Lu Baolu To: Joerg Roedel , Will Deacon , Robin Murphy , Kevin Tian Cc: iommu@lists.linux.dev, linux-kernel@vger.kernel.org, Lu Baolu Subject: [PATCH 1/1] iommu/vt-d: Removal of Advanced Fault Logging Date: Wed, 17 Sep 2025 10:48:50 +0800 Message-ID: <20250917024850.143801-1-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The advanced fault logging has been removed from the specification since v4.0. Linux doesn't implement advanced fault logging functionality, but it currently dumps the advanced logging registers through debugfs. Remove the dumping of these advanced fault logging registers through debugfs to avoid potential access to non-present registers. Signed-off-by: Lu Baolu --- drivers/iommu/intel/debugfs.c | 1 - drivers/iommu/intel/iommu.h | 1 - 2 files changed, 2 deletions(-) diff --git a/drivers/iommu/intel/debugfs.c b/drivers/iommu/intel/debugfs.c index 38790ff50977..765edb3740e2 100644 --- a/drivers/iommu/intel/debugfs.c +++ b/drivers/iommu/intel/debugfs.c @@ -63,7 +63,6 @@ static const struct iommu_regset iommu_regs_64[] = { IOMMU_REGSET_ENTRY(ECAP), IOMMU_REGSET_ENTRY(RTADDR), IOMMU_REGSET_ENTRY(CCMD), - IOMMU_REGSET_ENTRY(AFLOG), IOMMU_REGSET_ENTRY(PHMBASE), IOMMU_REGSET_ENTRY(PHMLIMIT), IOMMU_REGSET_ENTRY(IQH), diff --git a/drivers/iommu/intel/iommu.h b/drivers/iommu/intel/iommu.h index 21d79414385c..ef7a1ae8e0db 100644 --- a/drivers/iommu/intel/iommu.h +++ b/drivers/iommu/intel/iommu.h @@ -77,7 +77,6 @@ #define DMAR_FEDATA_REG 0x3c /* Fault event interrupt data register */ #define DMAR_FEADDR_REG 0x40 /* Fault event interrupt addr register */ #define DMAR_FEUADDR_REG 0x44 /* Upper address register */ -#define DMAR_AFLOG_REG 0x58 /* Advanced Fault control */ #define DMAR_PMEN_REG 0x64 /* Enable Protected Memory Region */ #define DMAR_PLMBASE_REG 0x68 /* PMRR Low addr */ #define DMAR_PLMLIMIT_REG 0x6c /* PMRR low limit */ -- 2.43.0