Re: [PATCH v2 15/15] drm/mgag200: Replace VRAM helpers with SHMEM helpers

2020-05-12 Thread Thomas Zimmermann
Hi Am 12.05.20 um 12:30 schrieb Emil Velikov: > On Tue, 12 May 2020 at 09:43, Thomas Zimmermann wrote: >> >> The VRAM helpers managed the framebuffer memory for mgag200. This came >> with several problems, as some MGA device require the scanout address >> to be located at VRAM offset 0. It's inco

Re: [PATCH v2 15/15] drm/mgag200: Replace VRAM helpers with SHMEM helpers

2020-05-12 Thread Emil Velikov
On Tue, 12 May 2020 at 09:43, Thomas Zimmermann wrote: > > The VRAM helpers managed the framebuffer memory for mgag200. This came > with several problems, as some MGA device require the scanout address > to be located at VRAM offset 0. It's incompatible with the page-flip > semantics of DRM's atom

[PATCH v2 15/15] drm/mgag200: Replace VRAM helpers with SHMEM helpers

2020-05-12 Thread Thomas Zimmermann
The VRAM helpers managed the framebuffer memory for mgag200. This came with several problems, as some MGA device require the scanout address to be located at VRAM offset 0. It's incompatible with the page-flip semantics of DRM's atomic modesettting. With atomic modesetting, old and new framebuffers