which kernel struct is KiDispatcherReadyListHead located in xp?

There are two thread-links in winXP,KiWaitListHead and KiDispatcherReadyListHead.I have known that the first one’s members is in each thread’s _KTHREAD struct offset 0x60(windbg shows +0x060 WaitListEntry : _LIST_ENTRY),but what about the other one?what is it name and which kernel struct is it in.
Need your help.Thank you.


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