linux-kernel - Re: [PATCH 0/5] iommu/vt-d: Fix crash dump failure caused by legacy DMA/IO

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Date:	Fri, 12 Dec 2014 17:11:02 +0100
From:	Joerg Roedel <joro@...tes.org>
To:	"Li, ZhenHua" <zhen-hual@...com>
Cc:	Baoquan He <bhe@...hat.com>,
	Takao Indoh <indou.takao@...fujitsu.com>, dwmw2@...radead.org,
	vgoyal@...hat.com, dyoung@...hat.com,
	iommu@...ts.linux-foundation.org, kexec@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.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
Subject: Re: [PATCH 0/5] iommu/vt-d: Fix crash dump failure caused by legacy
 DMA/IO

On Fri, Dec 12, 2014 at 10:25:31AM +0800, Li, ZhenHua wrote:
> Sorry I have no plan yet.
> Could you send me your logs on your AMD system?

> On 12/10/2014 04:46 PM, Baoquan He wrote:
> >This issue happens on AMD iommu too, do you have any plans or
> >thoughts on that?

I think the best approach for now is to get a prove-of-concept on the
VT-d driver. If it works there the way we expect, we can implement the
same handling in the AMD driver. But I see no reason to hold back the
VT-d patches until it is also fixed for AMD systems.


	Joerg


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