Re: [PATCH -mm 2/4] x86_64 boot: Add linked list of structsetup_data

[Huang, Ying]

On Thu, 2008-03-27 at 06:33 -0500, Paul Jackson wrote:
> Huang wrote:
> +/* setup data types */
> +#define SETUP_NONE			0
> +
> +/* extensible setup data list node */
> +struct setup_data {
> +	u64 next;
> +	u32 type;
> +	u32 len;
> +	u8 data[0];
> +};
> 
> 
> I don't understand what purpose the 'type' field serves.

The setup_data will not only be used for E820 extension. So a type field
is used to distinguish various setup_data.

Best Regards,
Huang Ying
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