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From: "Huang, Ying" <ying.huang@intel.com>
To: Paul Jackson <pj@sgi.com>
Cc: hpa@zytor.com, andi@firstfloor.org, mingo@redhat.com,
	tglx@linutronix.de, linux-kernel@vger.kernel.org
Subject: Re: [PATCH -mm 2/4] x86_64 boot: Add linked list of struct setup_data
Date: Fri, 28 Mar 2008 10:09:41 +0800	[thread overview]
Message-ID: <1206670181.13404.7.camel@caritas-dev.intel.com> (raw)
In-Reply-To: <20080327063307.ac323913.pj@sgi.com>

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

  reply	other threads:[~2008-03-28  2:08 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-03-27  7:09 [PATCH -mm 2/4] x86_64 boot: Add linked list of struct setup_data Huang, Ying
2008-03-27 11:25 ` Paul Jackson
2008-03-28  2:08   ` Huang, Ying
2008-03-29  6:20     ` Paul Jackson
2008-03-27 11:33 ` Paul Jackson
2008-03-28  2:09   ` Huang, Ying [this message]
2008-03-29  6:24     ` Paul Jackson
2008-03-29 17:06       ` H. Peter Anvin

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