> +static bool is_address_protected(void *p)
> +{
> + struct page *page;
> + struct vmap_area *area;
> +
> + if (unlikely(!is_vmalloc_addr(p)))
> + return false;
> + page = vmalloc_to_page(p);
> + if (unlikely(!page))
> + return false;
> + wmb(); /* Flush changes to the page table - is it needed? */
No.
The rest of this is just pretty verbose and seems to have been very
heavily copied and pasted. I guess that's OK for test code, though.
