#9100 BLOC 10.1.2: 2.6.27+ early boot crashes on XO1

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#9100: 2.6.27+ early boot crashes on XO1
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           Reporter:  dsd       |       Owner:  dsaxena                          
               Type:  defect    |      Status:  new                              
           Priority:  blocker   |   Milestone:  10.1.2                           
          Component:  kernel    |     Version:  Development build as of this date
         Resolution:            |    Keywords:                                   
        Next_action:  diagnose  |    Verified:  0                                
Deployment_affected:            |   Blockedby:                                   
           Blocking:            |  
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Comment(by dsd):

 I think we're onto something here. One key difference between 2.6.25 and
 the newer kernels is that 2.6.25 did not do the BIOS_LOWMEM_KILOBYTES
 dance. It just read the EBDA address, and reserved 4kb.

 http://lxr.free-
 electrons.com/source/arch/x86/kernel/setup_32.c?v=2.6.25#L391

 This changed in this commit:

 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=dedd04be71ce

 which is evidently what broke things for us.

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Ticket URL: <http://dev.laptop.org/ticket/9100#comment:48>
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