Am 11.04.2017 um 18:05 schrieb Felix Kuehling: > 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? Yes, but to be honest that sounds more and more like shooting with cannonballs on birds to me. At least I was fine with the per driver config option. Regards, Christian. > >> 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. >> >> > _______________________________________________ > amd-gfx mailing list > amd-gfx at lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx
