linux-kernel - Re: [PATCH v9 0/10] iommu/vt-d: Fix intel vt-d faults in kdump kernel

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Message-ID: <20150407034957.GC7213@localhost.localdomain>
Date:	Tue, 7 Apr 2015 11:49:57 +0800
From:	Dave Young <dyoung@...hat.com>
To:	"Li, Zhen-Hua" <zhen-hual@...com>
Cc:	"dwmw2@...radead.org" <dwmw2@...radead.org>,
	"indou.takao@...fujitsu.com" <indou.takao@...fujitsu.com>,
	"bhe@...hat.com" <bhe@...hat.com>,
	"joro@...tes.org" <joro@...tes.org>,
	"vgoyal@...hat.com" <vgoyal@...hat.com>,
	"iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"kexec@...ts.infradead.org" <kexec@...ts.infradead.org>,
	"alex.williamson@...hat.com" <alex.williamson@...hat.com>,
	"ddutile@...hat.com" <ddutile@...hat.com>,
	"ishii.hironobu@...fujitsu.com" <ishii.hironobu@...fujitsu.com>,
	"bhelgaas@...gle.com" <bhelgaas@...gle.com>,
	"Hatch, Douglas B (HPS Linux PM)" <doug.hatch@...com>,
	"Hoemann, Jerry" <jerry.hoemann@...com>,
	"Vaden, Tom (HP Server OS Architecture)" <tom.vaden@...com>,
	"Zhang, Li (Zoe@...ervers-Core-OE-PSC)" <li.zhang6@...com>,
	"Mitchell, Lisa (MCLinux in Fort Collins)" <lisa.mitchell@...com>,
	"billsumnerlinux@...il.com" <billsumnerlinux@...il.com>,
	"Wright, Randy (HP Servers Linux)" <rwright@...com>
Subject: Re: [PATCH v9 0/10] iommu/vt-d: Fix intel vt-d faults in kdump kernel

On 04/03/15 at 02:05pm, Li, Zhen-Hua wrote:
> The hardware will do some verification, but not completely.  If people think the OS should also do this, then it should be another patchset, I think.

If there is chance to corrupt more memory I think it is not a right way.
We should think about a better solution instead of fix it later.

Thanks
Dave
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