Hi Marek, I guess you are using old kernel config with 5.x kernel, and the kernel config option CONFIG_HMM is missing because the dependency option CONFIG_ZONE_DEVICE is missing in old config file. Please update your kernel config file to enable option CONFIG_ZONE_DEVICE. You should have this message in dmesg log: "HMM_MIRROR kernel config option is not enabled, " "add CONFIG_ZONE_DEVICE=y in config file to fix Philip On 2019-04-08 4:46 p.m., Marek Olšák wrote: > Hi, > > amdgpu_mn_register fails with -ENODEV in amdgpu_gem_userptr_ioctl. > > The regression happened within the last 1-2 months. > > Marek > > _______________________________________________ > amd-gfx mailing list > amd-gfx@xxxxxxxxxxxxxxxxxxxxx > https://lists.freedesktop.org/mailman/listinfo/amd-gfx > _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx