In cases where MMU_NOTIFIER is not available, userptr will not be available. Similar to i915, although not making an exception for CAP_SYS_ADMIN.
The proposed userspace patches for userptr seem to handle the fall- back properly, so a userptr-less kernel should not be a problem.
Signed-off-by: Rob Clark robdclark@gmail.com --- drivers/gpu/drm/Kconfig | 1 - drivers/gpu/drm/radeon/Makefile | 5 +++-- drivers/gpu/drm/radeon/radeon.h | 8 ++++++++ 3 files changed, 11 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig index c3413b6..75e6a88 100644 --- a/drivers/gpu/drm/Kconfig +++ b/drivers/gpu/drm/Kconfig @@ -110,7 +110,6 @@ config DRM_RADEON select HWMON select BACKLIGHT_CLASS_DEVICE select INTERVAL_TREE - select MMU_NOTIFIER help Choose this option if you have an ATI Radeon graphics card. There are both PCI and AGP versions. You don't need to choose this to diff --git a/drivers/gpu/drm/radeon/Makefile b/drivers/gpu/drm/radeon/Makefile index 12bc212..5e7a38b 100644 --- a/drivers/gpu/drm/radeon/Makefile +++ b/drivers/gpu/drm/radeon/Makefile @@ -80,8 +80,9 @@ radeon-y += radeon_device.o radeon_asic.o radeon_kms.o \ r600_dpm.o rs780_dpm.o rv6xx_dpm.o rv770_dpm.o rv730_dpm.o rv740_dpm.o \ rv770_smc.o cypress_dpm.o btc_dpm.o sumo_dpm.o sumo_smc.o trinity_dpm.o \ trinity_smc.o ni_dpm.o si_smc.o si_dpm.o kv_smc.o kv_dpm.o ci_smc.o \ - ci_dpm.o dce6_afmt.o radeon_vm.o radeon_ucode.o radeon_ib.o radeon_mn.o \ - radeon_sync.o + ci_dpm.o dce6_afmt.o radeon_vm.o radeon_ucode.o radeon_ib.o radeon_sync.o + +radeon-$(CONFIG_MMU_NOTIFIER) += radeon_mn.o
# add async DMA block radeon-y += \ diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 54529b8..52611d2 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -1777,8 +1777,16 @@ void radeon_test_syncing(struct radeon_device *rdev); /* * MMU Notifier */ +#if defined(CONFIG_MMU_NOTIFIER) int radeon_mn_register(struct radeon_bo *bo, unsigned long addr); void radeon_mn_unregister(struct radeon_bo *bo); +#else +static inline int radeon_mn_register(struct radeon_bo *bo, unsigned long addr) +{ + return -ENODEV; +} +static inline void radeon_mn_unregister(struct radeon_bo *bo) {} +#endif
/* * Debugfs