[Intel-gfx] [PATCH v6 4/6] vfio: Define vfio based vgpu's dma-buf operations

[Chen, Xiaoguang]

Hi,

>-----Original Message-----
>From: Gerd Hoffmann [mailto:kraxel at redhat.com]
>Sent: Monday, May 29, 2017 3:20 PM
>To: Chen, Xiaoguang <xiaoguang.chen at intel.com>;
>alex.williamson at redhat.com; chris at chris-wilson.co.uk; intel-
>gfx at lists.freedesktop.org; linux-kernel at vger.kernel.org;
>zhenyuw at linux.intel.com; Lv, Zhiyuan <zhiyuan.lv at intel.com>; intel-gvt-
>dev at lists.freedesktop.org; Wang, Zhi A <zhi.a.wang at intel.com>; Tian, Kevin
><kevin.tian at 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.