[ Adding the amd-gfx list ] On 2018-08-31 3:05 p.m., Thomas Hellstrom wrote: > On 08/31/2018 02:30 PM, Emil Velikov wrote: >> On 31 August 2018 at 12:54, Thomas Hellstrom <thellstrom at vmware.com> >> wrote: >>> To determine whether a device node is a drm device node or not, the code >>> currently compares the node's major number to the static drm major >>> device >>> number. >>> >>> This breaks the standalone vmwgfx driver on XWayland dri clients, >>> >> Any particular reason why the code doesn't use a fixed node there? >> It will make the diff vs the in-kernel driver a bit smaller. > Because then it won't be able to interoperate with other in-tree > drivers, like virtual drm drivers or passthrough usb drm drivers. > There is no clean way to share the minor number allocation with in-tree > drm, so standalone vmwgfx is using dynamic major allocation. I wonder why I haven't heard of any of these issues with the standalone version of amdgpu shipped in packaged AMD releases. Does that also use a different major number? If yes, maybe it's just that nobody has tried Xwayland clients with that driver. If no, how does it avoid the other issues described above? -- Earthling Michel Dänzer | http://www.amd.com Libre software enthusiast | Mesa and X developer
