Re: [ANNOUNCE][CFT] kexec for v2.5.48 && kexec-tools-1.7 -- Success

[Andy Pfiffer]

On Tue, 2002-11-19 at 02:25, Eric W. Biederman wrote:
> > Complete kernel boot-up log attached below.  I'm going to try to find my
> > other 576MB of RAM with the right command-line magic... ;^)
> 
> Or you can write a routine to gather that information dynamically and send
> me a patch for /sbin/kexec.  Though it may take another proc file to do
> that one properly.
> 
> Eric

Just to make sure I understand the problem.  Until we can make all
boot-time BIOS calls work, we need a way to:

    1) capture the initial memory map used by the kernel, and
    2) a way to supply that information to the to-be-run image.
    
On my system, the e820 map looks like this (from full reboot):
BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 000000000009dc00 (usable)
 BIOS-e820: 000000000009dc00 - 00000000000a0000 (reserved)
 BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 0000000027fed140 (usable)
 BIOS-e820: 0000000027fed140 - 0000000027ff0000 (ACPI data)
 BIOS-e820: 0000000027ff0000 - 0000000028000000 (reserved)
 BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
639MB LOWMEM available.

And /proc/iomem looks like this:
00000000-0009dbff : System RAM
0009dc00-0009ffff : reserved
000a0000-000bffff : Video RAM area
000c0000-000c7fff : Video ROM
000ca000-000cb7ff : Extension ROM
000cb800-000cffff : Extension ROM
000f0000-000fffff : System ROM
00100000-27fed13f : System RAM
  00100000-00309f9a : Kernel code
  00309f9b-003d873f : Kernel data
27fed140-27feffff : ACPI Tables
27ff0000-27ffffff : reserved
effff000-efffffff : Adaptec AIC-7892P U160/m
  effff000-efffffff : aic7xxx
f0000000-f7ffffff : S3 Inc. Savage 4
fea00000-feafffff : Intel Corp. 82557/8/9 [Ethernet 
  fea00000-feafffff : e100
feb7e000-feb7efff : ServerWorks OSB4/CSB5 USB Contro
feb7f000-feb7ffff : Intel Corp. 82557/8/9 [Ethernet 
  feb7f000-feb7ffff : e100
feb80000-febfffff : S3 Inc. Savage 4
fec00000-ffffffff : reserved

Comparing the two:
Range			e820		/proc/iomem
0000000-0009dbff	usable		System RAM
0100000-27fed140	usable		System RAM

ranges marked as "System RAM" that are listed /proc/iomem.  Did I miss
something?

I'll see if I can conjure up something...

Andy