Hi,

>-----Original Message-----
>From: Gerd Hoffmann [mailto:kra...@redhat.com]
>Sent: Monday, May 29, 2017 3:20 PM
>To: Chen, Xiaoguang <xiaoguang.c...@intel.com>;
>alex.william...@redhat.com; ch...@chris-wilson.co.uk; intel-
>g...@lists.freedesktop.org; linux-ker...@vger.kernel.org;
>zhen...@linux.intel.com; Lv, Zhiyuan <zhiyuan...@intel.com>; intel-gvt-
>d...@lists.freedesktop.org; Wang, Zhi A <zhi.a.w...@intel.com>; Tian, Kevin
><kevin.t...@intel.com>
>Subject: Re: [PATCH v6 4/6] vfio: Define vfio based vgpu's dma-buf operations
>
>> +struct vfio_vgpu_dmabuf_info {
>> +    __u32 argsz;
>> +    __u32 flags;
>> +    struct vfio_vgpu_plane_info plane_info;
>> +    __s32 fd;
>> +    __u32 pad;
>> +};
>
>Hmm, now you have argsz and flags twice in vfio_vgpu_dmabuf_info ...
>
>I think we should have something like this:
>
>struct vfio_vgpu_plane_info {
>        __u64 start;
>        __u64 drm_format_mod;
>        __u32 drm_format;
>        __u32 width;
>        __u32 height;
>        __u32 stride;
>        __u32 size;
>        __u32 x_pos;
>        __u32 y_pos;
>        __u32 padding;
>};
>
>struct vfio_vgpu_query_plane {
>       __u32 argsz;
>       __u32 flags;
>       struct vfio_vgpu_plane_info plane_info;
>        __u32 plane_id;
>        __u32 padding;
>};
>
>struct vfio_vgpu_create_dmabuf {
>       __u32 argsz;
>       __u32 flags;
>       struct vfio_vgpu_plane_info plane_info;
>        __u32 plane_id;
>        __s32 fd;
>};
Good suggestion will apply in the next version.
Thanks for review :)

Chenxg.
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