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-rw-r--r--drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h
index 4803e216e174..f5b67c63ed6b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mn.h
@@ -53,6 +53,8 @@ static inline struct amdgpu_mn *amdgpu_mn_get(struct amdgpu_device *adev,
}
static inline int amdgpu_mn_register(struct amdgpu_bo *bo, unsigned long addr)
{
+ DRM_WARN_ONCE("HMM_MIRROR kernel config option is not enabled, "
+ "add CONFIG_ZONE_DEVICE=y in config file to fix this\n");
return -ENODEV;
}
static inline void amdgpu_mn_unregister(struct amdgpu_bo *bo) {}