drm/amdgpu: more descriptive message if HMM not enabled

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If using old kernel config file, CONFIG_ZONE_DEVICE is not selected,
so CONFIG_HMM and CONFIG_HMM_MIRROR is not enabled, the current driver
error message "Failed to register MMU notifier" is not clear. Inform
user with more descriptive message on how to fix the missing kernel
config option.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=109808

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Philip Yang 2019-03-04 10:37:55 -05:00 • committed by Alex Deucher

parent 5aeaccca30

commit 194f87ddff

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drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h

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