On Wed, 2015-25-11 at 23:44:49 UTC, "Suresh E. Warrier" wrote: > smp_muxed_ipi_message_pass() invokes smp_ops->cause_ipi, which > updates the MFFR through an ioremapped address, to cause the > IPI. Because of this real mode callers cannot call > smp_muxed_ipi_message_pass() for IPI messaging. You're talking about the XICS code here but you don't mention that. Please expand it to make it clear that you're talking about XICS. cheers -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html