Hi, [...] > > +/* > > + * 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. > > + * > > + * 2: The restrictions on unbinding partial or multiple mappings is > > + * lifted, Similarly, binding will replace any mappings in the > > given range. > > + * > > + * See struct drm_i915_gem_vm_bind and struct > > drm_i915_gem_vm_unbind. > > + */ > > +#define I915_PARAM_VM_BIND_VERSION 57 > > Perhaps clarify that new versions are always backwards compatible? how is this 57 coherent with the description above? Andi
