linux-kernel - Re: [PATCH v11 05/10] iommu/vt-d: Add functions to load and save old re

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Message-ID: <5552AD1B.6030208@hp.com>
Date:	Wed, 13 May 2015 09:47:07 +0800
From:	"Li, ZhenHua" <zhen-hual@...com>
To:	Dave Young <dyoung@...hat.com>
CC:	dwmw2@...radead.org, indou.takao@...fujitsu.com, bhe@...hat.com,
	joro@...tes.org, vgoyal@...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, "Li, ZhenHua" <zhen-hual@...com>
Subject: Re: [PATCH v11 05/10] iommu/vt-d: Add functions to load and save
 old re

On 05/12/2015 04:37 PM, Dave Young wrote:
> Seems the subject was truncated? Maybe "re" means root entry? Then please fix it
>
> On 05/11/15 at 05:52pm, Li, Zhen-Hua wrote:
>> Add functions to load root entry table from old kernel, and to save updated
>> root entry table.
>> Add two member in struct intel_iommu, to store the RTA in old kernel, and
>> the mapped virt address of it.
>
> Please explain a bit what is "RTA" in patch log, it is unclear to most of people
> who do not know iommu details.
>
>>

If people want to understand this patchset, I assume they have read the 
vt-d specs. RTA is defined clearly in this spec.

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