Re: [PATCH 3/4] fbdev: Add FBINFO_HIDE_SMEM_START flag

2018-09-10 Thread Bartlomiej Zolnierkiewicz
On 08/22/2018 10:54 AM, Daniel Vetter wrote: > DRM drivers really, really, really don't want random userspace to > share buffer behind it's back, bypassing the dma-buf buffer sharing > machanism. For that reason we've ruthlessly rejected any IOCTL > exposing the physical address of any graphics bu

Re: [PATCH 3/4] fbdev: Add FBINFO_HIDE_SMEM_START flag

2018-09-03 Thread Daniel Vetter
On Wed, Aug 22, 2018 at 10:54:04AM +0200, Daniel Vetter wrote: > DRM drivers really, really, really don't want random userspace to > share buffer behind it's back, bypassing the dma-buf buffer sharing > machanism. For that reason we've ruthlessly rejected any IOCTL > exposing the physical address o

[PATCH 3/4] fbdev: Add FBINFO_HIDE_SMEM_START flag

2018-08-22 Thread Daniel Vetter
DRM drivers really, really, really don't want random userspace to share buffer behind it's back, bypassing the dma-buf buffer sharing machanism. For that reason we've ruthlessly rejected any IOCTL exposing the physical address of any graphics buffer. Unfortunately fbdev comes with that built-in. W