From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 45435C433E3 for ; Thu, 2 Jul 2020 00:59:43 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 24CAE2070C for ; Thu, 2 Jul 2020 00:59:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 24CAE2070C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id E5ACE251AE; Thu, 2 Jul 2020 00:59:41 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id rOQg8D6+AAwJ; Thu, 2 Jul 2020 00:59:41 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by silver.osuosl.org (Postfix) with ESMTP id 0075C24CBC; Thu, 2 Jul 2020 00:59:40 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id CC027C0865; Thu, 2 Jul 2020 00:59:40 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 78B40C0733 for ; Thu, 2 Jul 2020 00:59:38 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 58CFC24CEB for ; Thu, 2 Jul 2020 00:59:38 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id ohjNybONLafk for ; Thu, 2 Jul 2020 00:59:37 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by silver.osuosl.org (Postfix) with ESMTPS id 3D1FE24CBC for ; Thu, 2 Jul 2020 00:59:37 +0000 (UTC) IronPort-SDR: 5RukQ49Xf5UEKuVX6hPjWc+Q6u/xPHFsWTHAvNiR86JMx9yogNNt+5ELLqF4C4yeIn3zSwueey psbT5GlgodhQ== X-IronPort-AV: E=McAfee;i="6000,8403,9669"; a="145840520" X-IronPort-AV: E=Sophos;i="5.75,302,1589266800"; d="scan'208";a="145840520" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Jul 2020 17:59:36 -0700 IronPort-SDR: k5ecF3Q6zcI3nWdx6Qxil4zw34HSk4hd+mydaYVi7w6tm8PQg46p6c+8WxquLmwqn9ztPbCacq Z4wN3zre0KZw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,302,1589266800"; d="scan'208";a="304061442" Received: from allen-box.sh.intel.com (HELO [10.239.159.139]) ([10.239.159.139]) by fmsmga004.fm.intel.com with ESMTP; 01 Jul 2020 17:59:34 -0700 Subject: Re: [PATCH v3 6/7] iommu/vt-d: Warn on out-of-range invalidation address To: Jacob Pan , iommu@lists.linux-foundation.org, LKML , Joerg Roedel , David Woodhouse References: <1593617636-79385-1-git-send-email-jacob.jun.pan@linux.intel.com> <1593617636-79385-7-git-send-email-jacob.jun.pan@linux.intel.com> From: Lu Baolu Message-ID: Date: Thu, 2 Jul 2020 08:55:11 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <1593617636-79385-7-git-send-email-jacob.jun.pan@linux.intel.com> Content-Language: en-US Cc: "Tian, Kevin" , Raj Ashok X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On 7/1/20 11:33 PM, Jacob Pan wrote: > For guest requested IOTLB invalidation, address and mask are provided as > part of the invalidation data. VT-d HW silently ignores any address bits > below the mask. SW shall also allow such case but give warning if > address does not align with the mask. This patch relax the fault > handling from error to warning and proceed with invalidation request > with the given mask. > > Signed-off-by: Jacob Pan Fixes: 6ee1b77ba3ac0 ("iommu/vt-d: Add svm/sva invalidate function") Acked-by: Lu Baolu Best regards, baolu > --- > drivers/iommu/intel/iommu.c | 7 +++---- > 1 file changed, 3 insertions(+), 4 deletions(-) > > diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c > index 6a0c62c7395c..2e1b53ade784 100644 > --- a/drivers/iommu/intel/iommu.c > +++ b/drivers/iommu/intel/iommu.c > @@ -5439,13 +5439,12 @@ intel_iommu_sva_invalidate(struct iommu_domain *domain, struct device *dev, > > switch (BIT(cache_type)) { > case IOMMU_CACHE_INV_TYPE_IOTLB: > + /* HW will ignore LSB bits based on address mask */ > if (inv_info->granularity == IOMMU_INV_GRANU_ADDR && > size && > (inv_info->addr_info.addr & ((BIT(VTD_PAGE_SHIFT + size)) - 1))) { > - pr_err_ratelimited("Address out of range, 0x%llx, size order %llu\n", > - inv_info->addr_info.addr, size); > - ret = -ERANGE; > - goto out_unlock; > + pr_err_ratelimited("User address not aligned, 0x%llx, size order %llu\n", > + inv_info->addr_info.addr, size); > } > > /* > _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu