Re: [PATCH v2 1/3] arm64: mm: Fix rodata=full block mapping support for realm guests

[Kevin Brodsky <kevin.brodsky@arm.com>]

On 30/03/2026 18:17, Ryan Roberts wrote:
> +bool page_alloc_available __ro_after_init;
> +
> +void __init mem_init(void)
> +{
> + page_alloc_available = true;

I knew I had seen a simpler solution to this: vmemmap_alloc_block() uses
slab_is_available() to tell whether the buddy allocator is available.
AFAICT this becomes true somewhere in kmem_cache_init(), which is called
just after mem_init(). Probably good enough for our purpose?

- Kevin

> + swiotlb_update_mem_attributes();
> +}