some questions about system calls in KVM/ARM

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Hello,
I am intersted in KVM/ARM and I am trying to do some work based on KVM/ARM.
But here is some questions :
1. if I set HCR.TGE=1, does the system calls will traps into hyp mode and be handled by hyp_svc( arch/arm/kvm/interrupts.S)?
2. How can I get Guest OS's system call's number and address while issuing swi instruction in Guest OS usr mode and trapped into Hyp mode?

Thank you very much!
Have a fine day!

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