[DGD] Question about thread local storage

[Steve Wooster]

     I've been looking through the kernel lib to see how it implemented 
TLS... I know it has to do with modifying the array of arguments for the 
second call that call_trace() returns, and that the kernel lib always 
ensures the second call has extra arguments sent to it, but I'm a bit 
confused with how it does that. When it comes to functions in the driver 
object such as Initialize() or Restore(), I see it passing the necessary 
array, but at first glance, I'm having trouble figuring out how it 
allocates the memory in threads started by call_outs. Anybody know? Thanks. 
My apologies if this could have been easily found with more searching.

-Steve Wooster

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