#4223 BLOC MP Star: Spinlock lockup on resume

[Zarro Boogs per Child]

#4223: Spinlock lockup on resume
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  Reporter:  cjb      |       Owner:  dilinger
      Type:  defect   |      Status:  new     
  Priority:  blocker  |   Milestone:  MP Start
 Component:  kernel   |     Version:          
Resolution:           |    Keywords:          
  Verified:  0        |  
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Changes (by wad):

 * cc: wmb (added)


Comment:

 Can we get a memory test into a special version of OFW or the kernel ?

 What has been suggested to either rule out or implicate memory corruption
 is to boot the kernel only using half the memory in the system, then upon
 every suspend, copy the working memory to the unused half.  On every
 resume, the copy is compared with the working memory.

 I have already coded up and tested a user-space memory test program, which
 grabbed a huge chunk of memory, filled it once with a known pattern, then
 tested continuously upon resume for changes to that memory.   It never
 indicated an error in the wild  (it did catch errors deliberately
 introduced to test the tester...)

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Ticket URL: <https://dev.laptop.org/ticket/4223#comment:7>
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