Why is double_fault serviced by a trap gate? The problem with this is that
any double-fault caused by a stack-fault, which is the usual reason,
becomes a triple-fault. And a triple-fault results in a processor reset or
shutdown making the fault damn near impossible to get any information on.
Oughtn't the double-fault exception handler be serviced by a task gate? And
similarly the NMI handler in case the NMI is on the current stack page
frame?
Richard Moore - RAS Project Lead - Linux Technology Centre (PISC).
http://oss.software.ibm.com/developerworks/opensource/linux
Office: (+44) (0)1962-817072, Mobile: (+44) (0)7768-298183
IBM UK Ltd, MP135 Galileo Centre, Hursley Park, Winchester, SO21 2JN, UK
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