On Thu, Jul 07, 2022 at 03:18:15AM +0200, Andi Shyti wrote:
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?
57 is the next availble I915_PARAM_* number (from i915_drm.h). The
description above is regarding that 'value' it returns.
Niranjana
Andi
