linux-kernel - Re: [PATCH v4 6/8] vfio/mdev: Add iommu place holders in mdev

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Date:   Wed, 21 Nov 2018 02:22:08 +0530
From:   Kirti Wankhede <kwankhede@...dia.com>
To:     Christoph Hellwig <hch@...radead.org>,
        Lu Baolu <baolu.lu@...ux.intel.com>
CC:     Alex Williamson <alex.williamson@...hat.com>,
        Joerg Roedel <joro@...tes.org>,
        David Woodhouse <dwmw2@...radead.org>, <ashok.raj@...el.com>,
        <sanjay.k.kumar@...el.com>, <jacob.jun.pan@...el.com>,
        <kevin.tian@...el.com>,
        Jean-Philippe Brucker <jean-philippe.brucker@....com>,
        <yi.l.liu@...el.com>, <yi.y.sun@...el.com>, <peterx@...hat.com>,
        <tiwei.bie@...el.com>, Zeng Xin <xin.zeng@...el.com>,
        <iommu@...ts.linux-foundation.org>, <kvm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>
Subject: Re: [PATCH v4 6/8] vfio/mdev: Add iommu place holders in mdev_device



On 11/16/2018 2:27 PM, Christoph Hellwig wrote:
> On Fri, Nov 16, 2018 at 09:20:48AM +0800, Lu Baolu wrote:
>>> Please keep symbols mdev_set/get_iommu_device(dev, iommu_device) non-GPL
>>> same as other exported symbols from mdev_core module.
>>
>> Yes. It will be fixed in the next version.
> 
> No.  mdev shall not be used to circumvent the exports in the generic
> vfio code.
> 

It is about how mdev framework can be used by existing drivers. These
symbols doesn't use any other exported symbols.

Thanks,
Kirti