From 27025a602cb9d8b0fa5162b465334ef059a503b6 Mon Sep 17 00:00:00 2001
From: Liu Ping Fan <kernelfans@gmail.com>
Date: Tue, 19 Nov 2013 14:12:48 +0800
Subject: [PATCH] powerpc: kvm: optimize "sc 1" as fast return

In some scene, e.g openstack CI, PR guest can trigger "sc 1" frequently,
this patch optimizes the path by directly delivering BOOK3S_INTERRUPT_SYSCALL
to HV guest, so powernv can return to HV guest without heavy exit, i.e,
no need to swap TLB, HTAB,.. etc

Signed-off-by: Liu Ping Fan <pingfank@linux.vnet.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
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