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

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Message-ID: <AADFC41AFE54684AB9EE6CBC0274A5D1912F2A40@SHSMSX101.ccr.corp.intel.com>
Date:   Thu, 6 Sep 2018 01:55:06 +0000
From:   "Tian, Kevin" <kevin.tian@...el.com>
To:     Lu Baolu <baolu.lu@...ux.intel.com>,
        Joerg Roedel <joro@...tes.org>,
        "David Woodhouse" <dwmw2@...radead.org>
CC:     "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

> 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>