[Xen-devel] domain_pause_for_debugger not pausing multiple vcpus

[Kip Macy <kip.macy@xxxxxxxxx>]

Debugging an MP guest doesn't work. It appears that if a vcpu other than 0 hits an int3 it doesn't get paused.

If the comment in domain_pause_for_debugger is correct (below), this
function is completely inappropriate for breakpoint debugging. 

   NOTE: Thise does not synchronously pause the domain. The debugger
   must issue a PAUSEDOMAIN command to ensure that all execution 
   has ceased and guest state is committed to memory.

What is the correct way to synchronously deschedule a domain? Replacing
vcpu_sleep_nosync with vcpu_sleep_sync causes dom0 to lock up when
hitting a breakpoint.


Thanks.


             -Kip



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