Hi all,

Why has the IO device emulation part been kept in userspace ?
IO attempts cause VM-exits to the KVM (running in kernel-mode) it then
forwards these requests to the userspace (mode-switch). After
completion of IO in userspace, another mode switch is done to KVM
before resuming the guests.
What would be the problems had the device emulation parts been moved
totally to kernelspace ?


-- 
Regards,
Sukanto Ghosh
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