Fedora 25 - AMDGPU - GCN 1.0 - how to make it work?

Question

linux

I compiled the kernel from origin/f25 with the following config:

CONFIG_DRM_I2C_CH7006=m
CONFIG_DRM_I2C_SIL164=m
CONFIG_DRM_I2C_NXP_TDA998X=m
CONFIG_DRM_RADEON=m
CONFIG_DRM_RADEON_USERPTR=y
CONFIG_DRM_AMDGPU=m
CONFIG_DRM_AMDGPU_SI=y
# CONFIG_DRM_AMDGPU_CIK is not set
CONFIG_DRM_AMDGPU_USERPTR=y
# CONFIG_DRM_AMDGPU_GART_DEBUGFS is not set

Loaded.

$ lspci -k | grep radeon
  Kernel driver in use: radeon
  Kernel modules: radeon, amdgpu

We send the radeon module to the blacklist:

# /etc/modprobe.d/radeon.conf
blacklist radeon

But this doesn't help the situation...
dmesg says that both modules load successfully, only radeon always does it first.
Video card: HD7870 (GCN 1.0)
How to be?
Who is guilty?
What to do?

Answer 1

Decision:

# /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="modprobe.blacklist=radeon"

Update config:
Check:

lspci -k | grep amdgpu
  Kernel driver in use: amdgpu
  Kernel modules: radeon, amdgpu