On 17-04-11 12:01 AM, Michel Dänzer wrote: > One issue with this per-driver enable_cik option is that if the user > only enables it in the driver where it's disabled by default, without > also disabling it in the driver where it's enabled by default, it's back > to the current situation where both drivers try to use the same GPUs, > and it's up to chance which one actually gets to. > > That's why I was thinking about also having a shared command line option > respected by both drivers, e.g. amd_cik_driver=amdgpu/radeon . That > would be the preferred way to choose the driver at runtime. The shared option could not be in either amdgpu or radeon. Otherwise we'd create a cross-dependency between the drivers. It would have to be in drm, I guess? > Note that the per-driver enable_cik option will still be needed to be > able to override the kernel command line when manually loading the drivers. Why? I could make the shared option writable in /sys/module/drm/parameters/amd_cik_driver so you can change it before loading the module. Regards, Felix > > Maybe there's a better way to handle both cases that I haven't thought of. > >
