linux-kernel - Re: [PATCH v10 0/10] iommu/vt-d: Fix intel vt-d faults in kdump kernel

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Message-ID: <20150429112024.GB5799@dhcp-16-116.nay.redhat.com>
Date:	Wed, 29 Apr 2015 19:20:24 +0800
From:	Baoquan He <bhe@...hat.com>
To:	"Li, Zhen-Hua" <zhen-hual@...com>
Cc:	dwmw2@...radead.org, indou.takao@...fujitsu.com, joro@...tes.org,
	vgoyal@...hat.com, dyoung@...hat.com,
	iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org, kexec@...ts.infradead.org,
	alex.williamson@...hat.com, ddutile@...hat.com,
	ishii.hironobu@...fujitsu.com, bhelgaas@...gle.com,
	doug.hatch@...com, jerry.hoemann@...com, tom.vaden@...com,
	li.zhang6@...com, lisa.mitchell@...com, billsumnerlinux@...il.com,
	rwright@...com
Subject: Re: [PATCH v10 0/10] iommu/vt-d: Fix intel vt-d faults in kdump
 kernel

Bad news, I rebuilt a kernel with your patchset on 4.0.0+ (this commit
f614c81). Now dmar fault is  seen again.

The lspci log and kdump log are attached, please check:

[ ~]$ cat /proc/cmdline 
BOOT_IMAGE=/vmlinuz-4.0.0+ root=/dev/mapper/fedora_dhcp--128--28-root ro
rd.lvm.lv=fedora_dhcp-128-28/swap rd.lvm.lv=fedora_dhcp-128-28/root
crashkernel=256M console=ttyS0,115200 intel_iommu=on



View attachment "lspci.txt" of type "text/plain" (0 bytes)

View attachment "kdump_iommu.log" of type "text/plain" (55158 bytes)