KVM: PPC: Add mtsrin PV code

This is the guest side of the mtsr acceleration. Using this a guest can now
call mtsrin with almost no overhead as long as it ensures that it only uses
it with (MSR_IR|MSR_DR) == 0. Linux does that, so we're good.

Signed-off-by: Alexander Graf <agraf@suse.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/Documentation/kvm/ppc-pv.txt b/Documentation/kvm/ppc-pv.txt
index 41ee16d954d7..922cf954bd99 100644
--- a/Documentation/kvm/ppc-pv.txt
+++ b/Documentation/kvm/ppc-pv.txt
@@ -160,6 +160,9 @@ mtmsr	rX		b	<special mtmsr section>
 
 mtmsrd  rX, 1           b       <special mtmsrd section>
 
+[Book3S only]
+mtsrin  rX, rY          b       <special mtsrin section>
+
 [BookE only]
 wrteei  [0|1]           b       <special wrteei section>