Alexander Graf bd2be6836e KVM: PPC: Book3S: PR: Rework irq disabling ... Today, we disable preemption while inside guest context, because we need to expose to the world that we are not in a preemptible context. However, during that time we already have interrupts disabled, which would indicate that we are in a non-preemptible context. The reason the checks for irqs_disabled() fail for us though is that we manually control hard IRQs and ignore all the lazy EE framework. Let's stop doing that. Instead, let's always use lazy EE to indicate when we want to disable IRQs, but do a special final switch that gets us into EE disabled, but soft enabled state. That way when we get back out of guest state, we are immediately ready to process interrupts. This simplifies the code drastically and reduces the time that we appear as preempt disabled. Signed-off-by: Alexander Graf <agraf@suse.de>		2012-10-05 23:38:45 +02:00
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asm	KVM: PPC: Book3S: PR: Rework irq disabling	2012-10-05 23:38:45 +02:00