Re: [PATCH] Add 2 more E820 to ACPI specification

[Robert Millan]

On Fri, Jan 15, 2010 at 06:18:43PM +0100, Vladimir 'φ-coder/phcoder' Serbinenko 
wrote:
> Hello. This defines 2 more types for mmap_type in a way to match E820
> values. As grub legacy and grub2 both just pass E820 values through it
> shouldn't be any problem.

Note that although Multiboot's memory map format is modelled after e820,
it is defined by us, not by BIOS vendors.

> -value of 1 indicates available @sc{ram}, and all other values currently
> +value of 1 indicates available @sc{ram}, value of 3 indicates usable memory
> +holding ACPI information,

I'm concerned about increasing the amount of arch-specific references; what do
Multiboot kernels that use ACPI currently do?

> value of 4 indicates reserved memory which needs to
> +be preserved on hibernation and all other values currently
>  indicated a reserved area.

What's the difference between this reserved memory and a reserved area?

-- 
Robert Millan

  "Be the change you want to see in the world" -- Gandhi