Re: [PATCH v2] x86/mm: use max memory block size on bare metal

[Dave Hansen]

On 6/9/20 3:54 PM, Daniel Jordan wrote:
> +	/*
> +	 * Use max block size to minimize overhead on bare metal, where
> +	 * alignment for memory hotplug isn't a concern.
> +	 */
> +	if (hypervisor_is_type(X86_HYPER_NATIVE)) {
> +		bz = MAX_BLOCK_SIZE;
> +		goto done;
> +	}

What ends up being the worst case scenario?  Booting a really small
bare-metal x86 system, say with 64MB or 128MB of RAM?  What's the
overhead there?