linux-kernel - Re: [PATCH v2 01/12] iommu/vt-d: Enumerate the scalable mode capability

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Date:   Thu, 6 Sep 2018 10:25:56 +0800
From:   Lu Baolu <baolu.lu@...ux.intel.com>
To:     "Tian, Kevin" <kevin.tian@...el.com>,
        Joerg Roedel <joro@...tes.org>,
        David Woodhouse <dwmw2@...radead.org>
Cc:     baolu.lu@...ux.intel.com, "Raj, Ashok" <ashok.raj@...el.com>,
        "Kumar, Sanjay K" <sanjay.k.kumar@...el.com>,
        "Pan, Jacob jun" <jacob.jun.pan@...el.com>,
        "Liu, Yi L" <yi.l.liu@...el.com>, "Sun, Yi Y" <yi.y.sun@...el.com>,
        "peterx@...hat.com" <peterx@...hat.com>,
        Jean-Philippe Brucker <jean-philippe.brucker@....com>,
        "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>
Subject: Re: [PATCH v2 01/12] iommu/vt-d: Enumerate the scalable mode
 capability

Hi,

On 09/06/2018 09:55 AM, Tian, Kevin wrote:
>> From: Lu Baolu [mailto:baolu.lu@...ux.intel.com]
>> Sent: Thursday, August 30, 2018 9:35 AM
>>
>> The Intel vt-d spec rev3.0 introduces a new translation
>> mode called scalable mode, which enables PASID-granular
>> translations for first level, second level, nested and
>> pass-through modes. At the same time, the previous
>> Extended Context (ECS) mode is deprecated (no production
>> ever implements ECS).
>>
>> This patch adds enumeration for Scalable Mode and removes
>> the deprecated ECS enumeration. It provides a boot time
>> option to disable scalable mode even hardware claims to
>> support it.
>>
>> Cc: Ashok Raj <ashok.raj@...el.com>
>> Cc: Jacob Pan <jacob.jun.pan@...ux.intel.com>
>> Cc: Kevin Tian <kevin.tian@...el.com>
>> Cc: Liu Yi L <yi.l.liu@...el.com>
>> Signed-off-by: Sanjay Kumar <sanjay.k.kumar@...el.com>
>> Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
>> Reviewed-by: Ashok Raj <ashok.raj@...el.com>
> 
> Reviewed-by: Kevin Tian <kevin.tian@...el.com>
> 

Thank you, Kevin.

Best regards,
Lu Baolu