Hi Guys : I am using the virtqueue (virtqueue_pop, virtqueue_push etc) in the emulated mode (non-kvm mode) from an IO thread (a separate thread different from main QEMU thread). What I am observing is that the virtqueue memory seems to get corrupt. Either qemu crashes while performing virtqueue_push() (virtqueue_push() -> virtqueue_fill() ->bring_used_idx()->lduw_phys()->qemu_get_ram_ptr()->"bad ram offset") or crashes when the guest accesses a bad memory while using virtqueue. Now this never ever happens when I run QEMU in KVM mode (/dev/kvm present) OR when I use my functions from within the main qemu thread. I am unable to figure out why this is happening. I have looked into my code over and over again and I can't seem to explain this behavior. Can any of you guys give me any inkling?
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