Avi:
To make lapic code into mainline earlier, I am thinking what
should the user space code look like. If we wait till lapic branch has
all same functionality as mainline have today i.e. live migration, all
guests etc, we may have very long way to go given that only Greg (temply
off), me have contribution to the code besides you. So what I am
thinking is to reduce the bar to "no regression", which means a user
space command to choice kernel pic/apic. When choosing user pic/apic, we
make sure everything works including livemigration and all known good
guests; if choosing kernel pic/apic, we have better performance but
some feature lagging such as live migration.
Does this make sense? If yes, How about command option "-irqchip
k" and "-irqchip u"? the default value is user.
thx, eddie
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