Re: [PATCH 1/2] Use structs instead of hardcoded offsets in x86boot decompressor.

From: Rik van Riel
Date: Fri May 23 2008 - 21:08:28 EST

On Fri, 23 May 2008 17:59:27 -0400
Kristian HÃgsberg <krh@xxxxxxxxxx> wrote:

> Signed-off-by: Kristian HÃgsberg <krh@xxxxxxxxxx>

Acked-by: Rik van Riel <riel@xxxxxxxxxx>

> +static struct boot_params *real_mode; /* Pointer to real-mode data */
> +static struct screen_info *rm_screen_info; /* Pointer to real-mode data */

People who wonder why these pointers never get initialized: they
point to the zeropage, which of course lives at address zero.

/* The so-called "zeropage" */
struct boot_params {
struct screen_info screen_info; /* 0x000 */
struct apm_bios_info apm_bios_info; /* 0x040 */
__u8 _pad2[12]; /* 0x054 */
struct ist_info ist_info; /* 0x060 */

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