Hi Niranjana, [...] > +/* > + * VM_BIND feature version supported. > + * > + * The following versions of VM_BIND have been defined: > + * > + * 0: No VM_BIND support. > + * > + * 1: In VM_UNBIND calls, the UMD must specify the exact mappings created > + * previously with VM_BIND, the ioctl will not support unbinding multiple > + * mappings or splitting them. Similarly, VM_BIND calls will not replace > + * any existing mappings. > + * > + * See struct drm_i915_gem_vm_bind and struct drm_i915_gem_vm_unbind. > + */ > +#define I915_PARAM_VM_BIND_VERSION 57 58... 57 has been taken right after you sent this patch Andi [...]