[PATCH v2] vdso: Remove struct getcpu_cache

[Dave Hansen]

On 10/13/25 02:20, Thomas Weißschuh wrote:
> -int __vdso_getcpu(unsigned int *cpu, unsigned int *node, struct getcpu_cache *unused);
> -int __vdso_getcpu(unsigned int *cpu, unsigned int *node, struct getcpu_cache *unused)
> +int __vdso_getcpu(unsigned int *cpu, unsigned int *node, void *unused);
> +int __vdso_getcpu(unsigned int *cpu, unsigned int *node, void *unused)
>  {
>  	int cpu_id;

It would ideally be nice to have a _bit_ more history on this about
how it became unused any why there is such high confidence that
userspace never tries to use it.

Let's say someone comes along in a few years and wants to use this
'unused' parameter. Could they?