Re: [PATCH 8 of 13] Add a bootparameter to reserve high linear address space for hypervisors

[Andi Kleen <ak@suse.de>]

> +		/*
> +		 * reservedtop=size reserves a hole at the top of the kernel
> +		 * address space which a hypervisor can load into later.
> +		 * Needed for dynamically loaded hypervisors, so relocating
> +		 * the fixmap can be done before paging initialization.
> +		 * This hole must be a multiple of 4M.
> +		 */
> +		else if (!memcmp(from, "reservedtop=", 12)) {
> +			unsigned long reserved = memparse(from+12, &from);
> +			reserved &= ~0x3fffff;
> +			set_fixaddr_top(-reserved);
> +		}

You need to add a dummy __setup for it, otherwise it will end up in
init's environments or be warned about.

Also it should be documented somewhere in Documentation

-Andi

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