Hi, I'm removing the aio_disable_external() API from QEMU and noticed that Xen code calls aio_set_fd_handler(is_external=true) in hw/xen/xen-bus.c and hw/i386/kvm/xen_xenstore.c.
It wasn't clear to me whether is_external=true is necessary here. is_external=true is mainly used to temporarily pause I/O submission in the QEMU block layer. Maybe is_external=true was chosen out of caution but actually has no effect in this code. Does the Xen code rely on is_external=true? Thanks, Stefan
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