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Date: Tue, 8 May 2007 19:44:04 -0700
From: yhlu <yhlu.kernel@gmail.com>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Subject: Re: [patches] [PATCH] [21/22] x86_64: Extend bzImage protocol for relocatable bzImage
Cc: "H. Peter Anvin" <hpa@zytor.com>, "Jeremy Fitzhardinge" <jeremy@goop.org>,
       vgoyal@in.ibm.com, "Gerd Hoffmann" <kraxel@redhat.com>,
       "Jeff Garzik" <jeff@garzik.org>, patches@x86-64.org,
       linux-kernel@vger.kernel.org,
       virtualization <virtualization@lists.linux-foundation.org>,
       "Rusty Russell" <rusty@rustcorp.com.au>, "Andi Kleen" <ak@suse.de>,
       "Ingo Molnar" <mingo@elte.hu>
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On 5/8/07, Eric W. Biederman <ebiederm@xmission.com> wrote:
> "H. Peter Anvin" <hpa@zytor.com> writes:
> I believe YH is asking how we setup real_mode_data in /sbin/kexec.

pxelinux:

SCREEN_INFO.orig_video_mode =  3
SCREEN_INFO.orig_x =  0
SCREEN_INFO.orig_y =  24
x86_boot_params[] :
0000: 00 18 ff ff 08 00 03 50 8c c8 03 00 8e c0 19 01
0010: 10 00 7c fb fc be 31 00 ac 20 c0 74 09 b4 0e bb
0020: 07 00 cd 10 eb f2 31 c0 cd 16 cd 19 ea f0 ff 00
0030: f0 44 69 72 65 63 74 20 62 6f 6f 74 15 00 10 00

current kexec:
SCREEN_INFO.orig_video_mode =  0
SCREEN_INFO.orig_x =  0
SCREEN_INFO.orig_y =  3
x86_boot_params[] :
0000: 00 03 00 fc 00 00 00 50 8c c8 00 00 8e c0 19 01
0010: 10 00 7c fb fc be 31 00 ac 20 c0 74 09 b4 0e bb
0020: 3f a3 00 16 eb f2 31 c0 cd 16 cd 19 ea f0 ff 00
0030: f0 44 69 72 65 63 74 20 62 6f 6f 74 15 00 20 00

YH
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