[LinuxBIOS] #42: Disable SMM on K8 platforms

LinuxBIOS svn at openbios.org
Fri Nov 10 19:55:24 CET 2006

#42: Disable SMM on K8 platforms
    Reporter:  stepan             |           Owner:  stepan          
        Type:  defect             |          Status:  assigned        
    Priority:  major              |       Milestone:  Going mainstream
   Component:  code               |         Version:  v2              
  Resolution:                     |        Keywords:  SMM, security   
   Due_close:  MM/DD/YYYY         |   Include_gantt:  0               
Dependencies:                     |      Due_assign:  MM/DD/YYYY      
 Patchstatus:  there is no patch  |  
Comment (by segher):

 Replying to [comment:4 stepan]:
 > SMM is a CPU/Northbridge thing on AMD64 processors. No need to do
 anything with the chipset.

 Well you need to make sure that SMI (and SCI) are correctly handled,
 so they cannot hang the system.  It's not obvious to me that this is
 automatically the case, but you know this stuff better I'm sure :-)

 The other thing the chipset can do is disable certain regions of memory
 while not in SMM, but that's not too interesting if you don't do SMM
 at all :-)


Ticket URL: <http://tracker.linuxbios.org/trac/LinuxBIOS/ticket/42#comment:5>
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