Unable to single-step in kvm, always results in a resume

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Hi All,

I am trying to single-step through my kernel using qemu and kvm. I have run qemu via: qemu-system-x86_64 -s -S -hda /home/nickamon/lab1/obj/kernel.img and also connected to the process using gdb.

Problem is that whenever I try and step instruction, it seems to resume my kernel rather than allowing me to progress instruction by instruction. I have built the kvm snapshot from git and still no luck. Tried following the code for a few hours and have no luck. Any suggestions?

Thanks,

Nicholas


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