From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Li, ZhenHua" Subject: Re: [PATCH 0/10] iommu/vt-d: Fix intel vt-d faults in kdump kernel Date: Tue, 06 Jan 2015 15:05:46 +0800 Message-ID: <54AB894A.3070601@hp.com> References: <1419239729-26529-1-git-send-email-zhen-hual@hp.com> <20150106063718.GA2454@dhcp-16-105.nay.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20150106063718.GA2454@dhcp-16-105.nay.redhat.com> Sender: linux-pci-owner@vger.kernel.org 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 List-Id: iommu@lists.linux-foundation.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 >