Hi Kirti, >-----Original Message----- >From: Kirti Wankhede [mailto:kwankh...@nvidia.com] >Sent: Thursday, June 01, 2017 1:23 AM >To: Chen, Xiaoguang <xiaoguang.c...@intel.com>; Gerd Hoffmann ><kra...@redhat.com>; alex.william...@redhat.com; ch...@chris-wilson.co.uk; >intel-gfx@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 > > > >On 5/31/2017 11:48 AM, Chen, Xiaoguang wrote: >> 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 :) >> > >Can you define what are the expected values of 'flags' would be? Flags is not used in this case. It is defined to follow the rules of vfio ioctls.
> >Thanks, >Kirti > >> Chenxg. >> _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
