From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754356AbbAFHGz (ORCPT ); Tue, 6 Jan 2015 02:06:55 -0500 Received: from g4t3426.houston.hp.com ([15.201.208.54]:60433 "EHLO g4t3426.houston.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751964AbbAFHGy (ORCPT ); Tue, 6 Jan 2015 02:06:54 -0500 Message-ID: <54AB894A.3070601@hp.com> Date: Tue, 06 Jan 2015 15:05:46 +0800 From: "Li, ZhenHua" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: Baoquan He , indou.takao@jp.fujitsu.com CC: dwmw2@infradead.org, joro@8bytes.org, vgoyal@redhat.com, dyoung@redhat.com, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, kexec@lists.infradead.org, alex.williamson@redhat.com, ddutile@redhat.com, ishii.hironobu@jp.fujitsu.com, bhelgaas@google.com, doug.hatch@hp.com, jerry.hoemann@hp.com, tom.vaden@hp.com, li.zhang6@hp.com, lisa.mitchell@hp.com, billsumnerlinux@gmail.com Subject: Re: [PATCH 0/10] iommu/vt-d: Fix intel vt-d faults in kdump kernel References: <1419239729-26529-1-git-send-email-zhen-hual@hp.com> <20150106063718.GA2454@dhcp-16-105.nay.redhat.com> In-Reply-To: <20150106063718.GA2454@dhcp-16-105.nay.redhat.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org According to Takao Indoh's testing, seems adding flush after loading old irte and updating old irte does not fix the dmar faults. According to Takao Indoh's log and your log, the faults happens while and after driver is loaded. Maybe I am using incorrect code in 08/10. On 01/06/2015 02:37 PM, Baoquan He wrote: > Hi Zhenhua, > > I just tested your patchset based on 3.19.0-rc2+, and found several dmar > fault and intr-remap fault, it seems not the same as Takao's, please > check the attachment. > > Thanks > Baoquan >