linux-kernel - Re: [PATCH V6 3/6] mdev: introduce device specific ops

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Date:   Mon, 4 Nov 2019 10:51:53 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     Parav Pandit <parav@...lanox.com>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
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Subject: Re: [PATCH V6 3/6] mdev: introduce device specific ops


On 2019/11/2 上午4:11, Parav Pandit wrote:
>
>> -----Original Message-----
>> From: Jason Wang <jasowang@...hat.com>
>> Sent: Wednesday, October 30, 2019 1:45 AM
>> To: kvm@...r.kernel.org; linux-s390@...r.kernel.org; linux-
>> kernel@...r.kernel.org; dri-devel@...ts.freedesktop.org; intel-
>> gfx@...ts.freedesktop.org; intel-gvt-dev@...ts.freedesktop.org;
>> kwankhede@...dia.com; alex.williamson@...hat.com; mst@...hat.com;
>> tiwei.bie@...el.com
>> Cc: virtualization@...ts.linux-foundation.org; netdev@...r.kernel.org;
>> cohuck@...hat.com; maxime.coquelin@...hat.com;
>> cunming.liang@...el.com; zhihong.wang@...el.com;
>> rob.miller@...adcom.com; xiao.w.wang@...el.com;
>> haotian.wang@...ive.com; zhenyuw@...ux.intel.com; zhi.a.wang@...el.com;
>> jani.nikula@...ux.intel.com; joonas.lahtinen@...ux.intel.com;
>> rodrigo.vivi@...el.com; airlied@...ux.ie; daniel@...ll.ch;
>> farman@...ux.ibm.com; pasic@...ux.ibm.com; sebott@...ux.ibm.com;
>> oberpar@...ux.ibm.com; heiko.carstens@...ibm.com; gor@...ux.ibm.com;
>> borntraeger@...ibm.com; akrowiak@...ux.ibm.com; freude@...ux.ibm.com;
>> lingshan.zhu@...el.com; Ido Shamay <idos@...lanox.com>;
>> eperezma@...hat.com; lulu@...hat.com; Parav Pandit
>> <parav@...lanox.com>; christophe.de.dinechin@...il.com;
>> kevin.tian@...el.com; stefanha@...hat.com; Jason Wang
>> <jasowang@...hat.com>
>> Subject: [PATCH V6 3/6] mdev: introduce device specific ops
>>
>> Currently, except for the create and remove, the rest of mdev_parent_ops is
>> designed for vfio-mdev driver only and may not help for kernel mdev driver.
>> With the help of class id, this patch introduces device specific callbacks inside
>> mdev_device structure. This allows different set of callback to be used by vfio-
>> mdev and virtio-mdev.
>>
>> Signed-off-by: Jason Wang <jasowang@...hat.com>
>> ---
> [ ..]
>
>> diff --git a/include/linux/vfio_mdev_ops.h b/include/linux/vfio_mdev_ops.h
>> new file mode 100644 index 000000000000..3907c5371c2b
>> --- /dev/null
>> +++ b/include/linux/vfio_mdev_ops.h
>> @@ -0,0 +1,52 @@
>> +/* SPDX-License-Identifier: GPL-2.0-only */
>> +/*
>> + * VFIO Mediated device definition
>> + */
>> +
>> +#ifndef VFIO_MDEV_H
>> +#define VFIO_MDEV_H
>> +
> I should have noticed this before. :-(
> APIs exposed are by the mdev module and named with mdev_ prefix.
> And file name is _ops.h,
>
> We should name this file as mdev_vfio_ops.h
>
> And #define should be MDEV_VFIO_OPS_H
>
>> +#include <linux/mdev.h>
>> +
>> +/**
>> + * struct vfio_mdev_device_ops - Structure to be registered for each
> s/vfio_mdev_device_ops/mdev_vfio_device_ops/
>
> Similarly for virtio in future patches.
>

Will fix in V7.


>   static void mtty_device_release(struct device *dev)
> --
> 2.19.1
> With above small nit changes to rename the fields and file,
>
> Reviewed-by: Parav Pandit <parav@...lanox.com>


Appreciate that, thanks.