This patch support to fix lock holder preemption issue.
For kernel users, we could use bool vcpu_is_preempted(int cpu) to detech if
one vcpu is preempted or not.
The default implementation is a macro defined by false. So compiler can
wrap it out if arch dose not support such vcpu pteempted
This patch support to fix lock holder preemption issue.
For kernel users, we could use bool vcpu_is_preempted(int cpu) to detech if
one vcpu is preempted or not.
The default implementation is a macro defined by false. So compiler can
wrap it out if arch dose not support such vcpu pteempted
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